#game-development | Python | Page 55

frozen knoll Apr 12, 2020, 8:54 PM

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http://programarcadegames.com/python_examples/f.php?file=platform_jumper.py

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...and video with explanation. If it helps.

sly swift Apr 12, 2020, 8:55 PM

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dude

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could you like explain it

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i already went through documentation

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didnt understand any

frozen knoll Apr 12, 2020, 8:56 PM

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I can't give much help besides the video.

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If you are very lost, might want to back up and work on the basics a bit more.

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Everything builds upwards.

sly swift Apr 12, 2020, 8:57 PM

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no i just dont understand how i can immplement these into the code

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i implemented these attributes with my past experience in oop

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        self.rect.y += 2
        platform_hit_list = pygame.sprite.spritecollide(self, self.level.platform_list, False)
        self.rect.y -= 2```

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like

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i dont uınderstand

frozen knoll Apr 12, 2020, 9:01 PM

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This moves the sprite down two pixels. Sees if it collides with something. Then moves it back to the original location.

sly swift Apr 12, 2020, 9:01 PM

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so it isnt jumping

frozen knoll Apr 12, 2020, 9:01 PM

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Often used to see if there is a platform under the player, so the player can jump.

sly swift Apr 12, 2020, 9:01 PM

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oh

frozen knoll Apr 12, 2020, 9:01 PM

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No, it is part of a check to see if you can jump.

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If you can, then you'd set the velocity to an appropriate number for jumping.

sly swift Apr 12, 2020, 9:02 PM

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yeah how do we do that

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like

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i have a few attribute sthat could be used

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velocity(horizontal), mass, onair, plrx, plry```

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how could i implement that code into mine

sly swift Apr 12, 2020, 9:30 PM

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took a look at the video u sent

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i implemented gravity and stuff

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but couldnt do jumps or stuff

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thx anyway

sly swift Apr 12, 2020, 10:25 PM

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it is 1:25 here

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been workin on this goddamn problem for hours

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still no dice

sly swift Apr 13, 2020, 1:51 PM

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nvm

dawn quiver Apr 13, 2020, 2:33 PM

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help me

kind tartan Apr 13, 2020, 4:31 PM

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Hey guys I kind of need some help now

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I am trying to make a shooting mechanism but all the bullets are getting shot at one click. I am trying to make it shoot one bullet per click.

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def primary_weapon_functionality(self, key, bullet_speed, pic, screen):
keys = pygame.key.get_pressed()
if keys[key] and self.power > self.PRIMARY_WEAPON_POWER_REQUIERMENT:
self.power = self.power - self.PRIMARY_WEAPON_POWER_REQUIERMENT

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this is pygame btw

dreamy swan Apr 13, 2020, 4:53 PM

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Maybe have a small timer for each shot?

frozen knoll Apr 13, 2020, 5:02 PM

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Still working on a bloom/glow effect for Arcade:

📎 glow.mp4

kind tartan Apr 13, 2020, 6:21 PM

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@dreamy swan thanks!

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although I am trying to figure if there is any given functionality like a key down thing which I could use from Pygame

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not a bad idea though.

frozen knoll Apr 13, 2020, 6:23 PM

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Are you looking to do something like this?

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http://programarcadegames.com/python_examples/f.php?file=bullets.py

thorn rock Apr 13, 2020, 7:12 PM

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good evening, beginner adventure with gamedev and chose Godot. Is it a good idea to learn to program in Python first and then switch to GDScript? Is it better to learn GDScript immediately? I will add that I plan to create a small MMORPG game.

lyric mason Apr 13, 2020, 7:15 PM

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Hey guys, I need some help pls. Do you know how can I take the coordinates of an image ? The method rect always gives me (0,0). I use Pygame btw

near wedge Apr 13, 2020, 7:17 PM

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@thorn rock Might as well just jump into GDScript.

thorn rock Apr 13, 2020, 7:18 PM

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Thanks :)

crystal walrus Apr 13, 2020, 7:31 PM

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GDScript is not really Python

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By the way, I can reckon Godot has Python bindings which sounds cool

kind tartan Apr 13, 2020, 8:04 PM

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@frozen knoll Thanks!! that helped

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I found that

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event.type == pygame.MOUSEBUTTONDOWN

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does the job

frozen knoll Apr 13, 2020, 8:05 PM

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Great! Glad I was able to help.

kind tartan Apr 13, 2020, 8:30 PM

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It worked, but I felt that I should have just put a timer in between the shots now - its kind of annoying to keep lifting your hand just to shoot multiple times instead of sequential fire.

upbeat goblet Apr 13, 2020, 8:49 PM

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Is anyone here familiar with ren'py?

dawn quiver Apr 13, 2020, 10:20 PM

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Any chance someone could give me a hand

dreamy swan Apr 13, 2020, 10:20 PM

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@upbeat goblet i work with renpy a lot

dense marsh Apr 14, 2020, 2:12 AM

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is there a way to get the pos of where you clicked your mouse on the pygame event

merry echo Apr 14, 2020, 8:55 AM

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Hello fellas I'm trying out the Arcade lib but I seem to have problems with performance

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Im only drawing 100 rectangles and the speed is already at a crawl

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here's the pastebin https://pastebin.com/cgvcC9HY

Pastebin

[Python] Arcade Snake Game - Pastebin.com

merry echo Apr 14, 2020, 9:14 AM

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ok I used the Sprite class instead and it's faster now

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I don't know what sorcery it's doing behind the scenes that drawing 100 images is faster than drawing 100 rectangles

dawn quiver Apr 14, 2020, 10:47 AM

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can someone help me? I studying pygame for like 2 days, and I have an error.
When I try to load an image it says:
can't load image

void sable Apr 14, 2020, 10:49 AM

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You using?:
var = pygame.image.load('file.png')

dawn quiver Apr 14, 2020, 10:49 AM

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and yeah, it's in the same folder where the project file is

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yes

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yes exp

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i'm upload it to pastebin

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if want

void sable Apr 14, 2020, 10:49 AM

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sure

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maybe the imports?

import pygame
from pygame.locals import *

dawn quiver Apr 14, 2020, 10:52 AM

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https://pastebin.com/TwGQkEd1

Pastebin

háh mi a faszt néztek, btw this is the code for the game :D - Paste...

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here

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@void sable

void sable Apr 14, 2020, 10:54 AM

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which line?

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is the error

dawn quiver Apr 14, 2020, 10:54 AM

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where's the image.load is

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i tried with the os join thing

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so what to do @void sable ?

void sable Apr 14, 2020, 10:58 AM

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don't do os.path

dawn quiver Apr 14, 2020, 10:58 AM

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i tried it earlier

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but ok

void sable Apr 14, 2020, 11:00 AM

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also, why you have '1.py game' in index 0 for variable walkRight

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I think that's wrong

dawn quiver Apr 14, 2020, 11:00 AM

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so

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is the line is long?

void sable Apr 14, 2020, 11:01 AM

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walkRight = [
    pygame.image.load(os.path.join('1.py game', #<--- Take this out from the list. This is not a file
    'sprite1_right.png')), 
    pygame.image.load(os.path.join('sprite2_right.png')), 
    pygame.image.load(os.path.join('sprite3_right.png')), 
    pygame.image.load(os.path.join('sprite4_right.png')), 
    pygame.image.load(os.path.join('sprite5_right.png')), 
    pygame.image.load(os.path.join('sprite6_right.png')), 
    pygame.image.load(os.path.join('sprite7_right.png')), 
    pygame.image.load(os.path.join('sprite8_right.png'))
    ]

dawn quiver Apr 14, 2020, 11:03 AM

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so i need to copy it?

void sable Apr 14, 2020, 11:04 AM

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copy this:

walkRight = [
    pygame.image.load('sprite1_right.png'), 
    pygame.image.load('sprite2_right.png'), 
    pygame.image.load('sprite3_right.png'), 
    pygame.image.load('sprite4_right.png'), 
    pygame.image.load('sprite5_right.png'), 
    pygame.image.load('sprite6_right.png'), 
    pygame.image.load('sprite7_right.png'), 
    pygame.image.load('sprite8_right.png')
    ]

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and replace your variable

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with the above

dawn quiver Apr 14, 2020, 11:06 AM

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okay

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now i have an another error

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Traceback (most recent call last):
  File "f:\cucclik\1.py game\1_pygame.py", line 99, in <module>
    redrawGameWindow()
  File "f:\cucclik\1.py game\1_pygame.py", line 46, in redrawGameWindow
    win.blit(bg, (0,0))
TypeError: argument 1 must be pygame.Surface, not list```

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@void sable

void sable Apr 14, 2020, 11:16 AM

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mmm

merry echo Apr 14, 2020, 11:17 AM

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what editor are you using?

void sable Apr 14, 2020, 11:21 AM

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@dawn quiver Not sure, seems the code is fine to me.
You loaded the image fine and you put it in blit.
Seems good.

dawn quiver Apr 14, 2020, 11:22 AM

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Mu editor

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and I have this error so what I can do?

merry echo Apr 14, 2020, 11:25 AM

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try using an absolute path like this:

mypath = os.path.dirname( os.path.realpath( __file__ ) )

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then use it like this:

pygame.image.load(os.path.join(mypath, "sprite_name_here.png"))

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Does arcade even have a translate() function?

dawn quiver Apr 14, 2020, 11:44 AM

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i done it

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but i have an error

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ＶＡＰＩＮＧ　ＩＮ　ＴＨＥ　Ｈ００Ｄ - リサフランク420 / 現代のコ

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oops not this

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  File "f:\cucclik\1.py game\1_pygame.py", line 99, in <module>
    redrawGameWindow()
  File "f:\cucclik\1.py game\1_pygame.py", line 46, in redrawGameWindow
    win.blit(bg, (0,0))
TypeError: argument 1 must be pygame.Surface, not list```

frozen knoll Apr 14, 2020, 11:45 AM

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@merry echo Arcade draws sprites in a batch with SpriteList so they are fast. For shapes, you have to also draw them in a batch with ShapeElementList. Right now the 2.4 branch of code also has a 10x speed improvement even if you don't.

merry echo Apr 14, 2020, 11:49 AM

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Oh ok thanks man

void sable Apr 14, 2020, 11:50 AM

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@dawn quiver can you comment the line out and recompile?
#win.blit(bg, (0,0))

dawn quiver Apr 14, 2020, 11:52 AM

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what do u mean

merry echo Apr 14, 2020, 11:54 AM

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lmao nice music

void sable Apr 14, 2020, 11:55 AM

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I want to see what happens when you remove win.blit(bg,(0,0))

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temporarily remove it

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we'll put it back after

merry echo Apr 14, 2020, 12:00 PM

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Can we not use transformations when drawing in arcade? or apply them in sprite lists?

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most libs usually have those

frozen knoll Apr 14, 2020, 2:53 PM

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I'm not sure what use-case you're looking for.

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You move sprites just by changing their location.

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If you've got a change_x/change_y you can call update to have them move by that amount.

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If you want to move the entire sprite list as one, there's not a command for that. There is for ShapeElementList though.

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https://arcade.academy/examples/shape_list_demo_person.html#shape-list-demo-person

dense marsh Apr 14, 2020, 4:53 PM

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is there a way to draw an X in pygame or should i use a sprite or something

frozen knoll Apr 14, 2020, 5:00 PM

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Depends on the use case. Probably sprites. Or maybe draw_line

fervent rose Apr 14, 2020, 6:02 PM

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But a sprite would probably look better

solid obsidian Apr 14, 2020, 6:37 PM

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Hey can anyone help me with an A* search question?

quiet finch Apr 14, 2020, 6:38 PM

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Just ask it

solid obsidian Apr 14, 2020, 6:39 PM

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📎 Screen_Shot_2020-04-13_at_10.55.52_PM.png

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im need to find what A* tree would result in

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the parenthetical values are heuristics distances the lines are real

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I think i have the right answer am not sure

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S - starting point

SA = 15 / SC = 15 / SB = 13 - Thus we choose SB because its the shortest distance, next:

SBC = 6 + 7 = 13- This is the only choice, next:

SBCD = 6 + 3 = 9 / SBCG = 6+ 12 = 18 / SBCE = 6 + 4 = 10 Thus we choose SBCD because its the shortest distance, next:

SBCDG = 9 + 10 = 19. The decision tree is done and this is the path selected

topaz jay Apr 14, 2020, 7:03 PM

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You're correct

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Another way to think about it is bottlenecks.

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C and G are bottlenecks points in your tree, this means regardless of what path you take before C or G you must go through those nodes

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Then you just need to do optimization for the starting point to bottle neck node 1 and bottleneck node 1 to bottle neck node 2

solid obsidian Apr 14, 2020, 7:05 PM

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thats actually super clever i wont of thought about that

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question part of the reason A* isnt working correctly here is because of the hueristics at D right? It says we think its 0 but it ends up being 10 throwing the algorithim out of whack?

topaz jay Apr 14, 2020, 7:08 PM

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Sorry I'm not 100% familiar with the terminology you're using. What do you mean by A*

solid obsidian Apr 14, 2020, 7:10 PM

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https://en.wikipedia.org/wiki/A*_search_algorithm

A* search algorithm

A* (pronounced "A-star") is a graph traversal and path search algorithm, which is often used in computer science due to its completeness, optimality, and optimal efficiency. One major practical drawback is its

topaz jay Apr 14, 2020, 7:16 PM

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Specifically, A* selects the path that minimizes

{\displaystyle f(n)=g(n)+h(n)}

where n is the next node on the path, g(n) is the cost of the path from the start node to n, and h(n) is a heuristic function that estimates the cost of the cheapest path from n to the goal.

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A* minimizes F(n) = g(n) + h(n)

solid obsidian Apr 14, 2020, 7:17 PM

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yep and at each step it recalculates

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the h(n)

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i believe

topaz jay Apr 14, 2020, 7:17 PM

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I have no idea how they're setting the heuristics but if it's admissable then h should never be overestimates the actual cost

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I think E is the problem here, it over estimated the path from EG

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Like it predicts EG to be 9, but the actual is 4

solid obsidian Apr 14, 2020, 7:18 PM

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the heurisitics is just the parenthis value

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ohhh your right

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because its not admissable

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yea

topaz jay Apr 14, 2020, 7:19 PM

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But at the same time I don't know if your problem states heuristics will be admissable

solid obsidian Apr 14, 2020, 7:19 PM

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they arent

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err they are

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it asks why a* is doesnt give the best path

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so the heuristics here is a guess which is the value in the brackets

topaz jay Apr 14, 2020, 7:20 PM

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Yea cuz the real path should be SBCEG

solid obsidian Apr 14, 2020, 7:20 PM

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yea agree

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so my a* tree is right yea

topaz jay Apr 14, 2020, 7:21 PM

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Yea

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It's also a problem you resolve in operation management

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But it's called bottleneck theorems

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But it's also slightly different haha

solid obsidian Apr 14, 2020, 7:22 PM

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hahahh thank you so much for the help man

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i really appreciate it

topaz jay Apr 14, 2020, 7:24 PM

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No worries

dreamy swan Apr 14, 2020, 8:16 PM

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Pygame works on Linux correct?

mossy osprey Apr 14, 2020, 8:32 PM

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Hello

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So i am trying to add a .png file to represent the user controllable ship in a space invaders game

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I have used a png file for the icon of the pygame window as seen in the top left

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📎 Trouble_Shooting_4.PNG

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📎 Trouble_Shooting_1.PNG

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The icon is displayed in the window but how come "SpaceInvaders Hero.png" is not appearing in the window

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i have set its co-ords as 370,480 in a 600,800 display btw

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📎 Trouble_Shooting_3.PNG

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As you can see above, both pngs are part of the project but for some reason the SpaceInvaders hero is not showing in the pygame window

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📎 Trouble_Shooting_2.PNG

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I have even called player() to appear which should display the hero png but it does not :/

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📎 Trouble_Shooting_5.PNG

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Can anyone help me please ? Mods, Admins anyone ?

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i really don't know why it will not work

round obsidian Apr 14, 2020, 8:47 PM

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@mossy osprey I'm not familiar with PyGame but try adding this line after your .load function for the playerImage

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print (playerImage)

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and see what it produces on the console when you run the game

mossy osprey Apr 14, 2020, 8:47 PM

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ok, i will try

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idk if it will work tho as I searched for a function built into pygame that would allow me to set an image however there apeears to be nothing :/

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@round obsidian nothing changes

round obsidian Apr 14, 2020, 8:51 PM

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I didn't ask if anything changed; I asked what it produced on the console (not the window opened by your PyGame script)

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at the very least it should say None or something to that effect

mossy osprey Apr 14, 2020, 8:53 PM

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it does not produce anything

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:/

round obsidian Apr 14, 2020, 8:54 PM

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It would help if we could see the whole code, post it to pastebin or something

mossy osprey Apr 14, 2020, 8:54 PM

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ok i will

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wait, where is paste bin ?

round obsidian Apr 14, 2020, 8:55 PM

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https://pastebin.com/

Pastebin

Pastebin.com - #1 paste tool since 2002!

Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

mossy osprey Apr 14, 2020, 8:56 PM

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https://pastebin.com/bNjSf5BK

Pastebin

SpaceInvader - Pastebin.com

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@round obsidian

round obsidian Apr 14, 2020, 8:57 PM

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OK

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So you're getting the blank window, no errors

mossy osprey Apr 14, 2020, 8:58 PM

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yeah

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however the icon appears

round obsidian Apr 14, 2020, 8:58 PM

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right, that part is puzzling

mossy osprey Apr 14, 2020, 8:59 PM

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it makes no sense

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both of the pngs were imported from the same wesbite

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in the same way

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maybe i should try a different png

round obsidian Apr 14, 2020, 8:59 PM

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yeah, make sure the .png itself isn't trashed

mossy osprey Apr 14, 2020, 8:59 PM

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if that does not work then rip this project :/

round obsidian Apr 14, 2020, 8:59 PM

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or, try the icon .png and see if that works

mossy osprey Apr 14, 2020, 9:00 PM

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icon only sets the top left image

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it affects nothing else

round obsidian Apr 14, 2020, 9:00 PM

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That is, load the other .PNG and see if that blits to the screen

mossy osprey Apr 14, 2020, 9:00 PM

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ahh ok

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omg

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i think i know why it cannot be seen

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i have a black background

round obsidian Apr 14, 2020, 9:03 PM

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and the sprite itself is black?

mossy osprey Apr 14, 2020, 9:03 PM

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yes exactly

round obsidian Apr 14, 2020, 9:03 PM

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AHA

mossy osprey Apr 14, 2020, 9:03 PM

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im so retarded

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fml

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it took me 30mins to realise

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rip my brain cells

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hey, thanks for ur help man tho, i really appreciate it

round obsidian Apr 14, 2020, 9:05 PM

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+1

floral root Apr 15, 2020, 1:52 AM

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Does anyone have a guide or something that they recommend to read on game development

shadow bane Apr 15, 2020, 5:01 AM

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Can anyone show decent examples of unit testing with pygame? I am yet to find some good examples with pytest

merry echo Apr 15, 2020, 11:35 AM

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@frozen knoll Thank you for the reply.
It would be similar to calling translate() in p5.js or making a Camera class in libGDX.
Then all drawing calls after translating would be offset by the amount translated.
I've noticed there's a move() function, but it apparently applies it to the sprite's center position (I use the left and bottom boundaries for positioning).
I found out that arcade.set_viewport() does the job though.

merry echo Apr 15, 2020, 11:52 AM

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By the way, is there a way to contribute to arcade?
A structured reference page could help users get familiarized better
Something like this https://p5js.org/reference/, or https://processing.org/reference/

frozen knoll Apr 15, 2020, 4:26 PM

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@merry echo You can set sprite.left and sprite.bottom to move a sprite.

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Docs are open-source. You can certainly contribute!

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https://github.com/pvcraven/arcade/tree/master/doc

still shard Apr 15, 2020, 4:30 PM

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Translation what @frozen knoll said: You can do all the work, if they accept your PR is another question.

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I'd try with very small contributions, otherwise you may have a lot of work done just to have it denied because the maintainer has a bad day

frozen knoll Apr 15, 2020, 4:31 PM

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Agreed with the 'small' bit, that way you can get a feel for what the maintainer (me) is looking for.

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I'd love to have a new page like the ones you linked.

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It is a good idea.

low tide Apr 15, 2020, 7:13 PM

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Okie I'm trying to follow arcade's tutorial

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but I can't place a sprite. I'm doing what they're doing.

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And I get "Error: Attempt to draw a sprite without a texture set."

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Solved it, I was importing the sprite incorrectly.

potent ice Apr 15, 2020, 8:54 PM

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Geometry shader circles in arcade 🙂 (without antialiasing. Don't have it on in dev)

📎 Capture.JPG

dawn quiver Apr 15, 2020, 9:43 PM

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I'm trying to figure out a way to create a branched narrative, where the user can select options to progress the story in their own path... I was suggested to make a finite state machine for that, but how do I do that? I understand what a finite state machine is, but how do i use one to do what I'm trying to accomplish?

I obviously don't want big fat automaton to contain the entire narrative, that's awful.

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Something like this, but in a larger scale
https://www.mdpi.com/sustainability/sustainability-11-05615/article_deploy/html/images/sustainability-11-05615-g001-550.jpg

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or maybe even this
https://thestoryelement.files.wordpress.com/2014/12/branching_tree_worldstate.png

tawny stratus Apr 15, 2020, 9:46 PM

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There are a few GDC talks from the guy/people who made Reigns. The way they do it is very interesting, and I'd suggest checking out their talks on YouTube. I can't remember the exact video that discussed their approach to solving the tree-structure narrative problem

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https://www.youtube.com/watch?v=tDdtbh-oUTU Might've been this video

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I'll try and give you a tl;dw. Their game is oriented around making choices, and when you make a choice, it might have some effect and trigger some global state variable. THen the possible future choices are drawn from a "bag" of all possible choices - and the possible choices are in part defined by the global state that has been set by previous choices.

For example, you might make the choice to slay the vampire, or let him live. If you let him live, it sets off the state of "vampire is alive", and some of the future choices the user gets might be "Do you help the vampire eat someone". Or if you killed him, a state variable of "has murdered vampire", and events/choices like "the vampires pal comes and tries to kill you - what do?" can appear in the future

potent ice Apr 16, 2020, 2:01 AM

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Arcade pip install arcade==2.4a1 is on PyPI if someone wants to try

ionic citrus Apr 16, 2020, 3:07 AM

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What are the best libraries to work on game development using python?

near wedge Apr 16, 2020, 3:22 AM

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@ionic citrus That will depend on your goals. At the very least you'll want to decide between 2d and 3d, and then, from there, figure out how much you expect the engine to handle for you. In general, I would likely go for Arcade for higher-level 2D and Panda3D (or the higher-level Ursina, which is built on top of Panda3D) for 3D. If you want to get more in the guts of graphics rendering, then maybe something like pyglet or moderngl would be better.

dawn quiver Apr 16, 2020, 4:05 AM

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📎 unknown.png

jovial fable Apr 16, 2020, 7:33 AM

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Ah the three attributes, green red and purple

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this buttons and UI looks cool tho 😄

civic fox Apr 16, 2020, 4:20 PM

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Anyone know of articles about time systems in always-on games? Like making time matter, having seasons in an MMO, whether things decay while the player isn't logged in, stuff like that?

dense marsh Apr 16, 2020, 10:08 PM

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how do i get pygame do draw a rectangle where i click

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pygame.init()
#screen settings
WIN_W = 800
WIN_H = 600
SCREEN = pygame.display.set_mode((WIN_W, WIN_H))
#colors
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
RED = (255, 0, 0)
#graph
LINES = 80
PIX_SIZE = WIN_W // LINES

def drawGrid():
    
    x = 0
    y = 0

    for i in range(LINES):
        pygame.draw.line(SCREEN, BLACK, ((x + PIX_SIZE), 0), ((x + PIX_SIZE), 600))
        pygame.draw.line(SCREEN, BLACK, (0, (y + PIX_SIZE)), (800, (y + PIX_SIZE)))
        
        x += PIX_SIZE
        y += PIX_SIZE

def drawRectangles():

    if event.type == pygame.MOUSEBUTTONDOWN:
        CURSOR_POS = pygame.mouse.get_pos()
        pygame.draw.rect(SCREEN, RED, (CURSOR_POS[0], CURSOR_POS[1], PIX_SIZE, PIX_SIZE))
        

running = True

while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
``` this is my code rn, whenever i click it shows a rectangle but as soon as i let go the rectangle disappears

#

oh wait i see what i did wrong

#

but what could i do to prevent this

merry echo Apr 16, 2020, 11:15 PM

#

you can set a variable to the mouse position whenever you press the mouse button and then just draw the rectangle using it
_

#

I've been searching through the arcade docs and I couldn't find a way to center my window. Does anybody know how to do this?

iron galleon Apr 16, 2020, 11:32 PM

#

if i understand correctly, you'll want this https://arcade.academy/arcade.html?highlight=set_viewport#arcade.set_viewport

merry echo Apr 16, 2020, 11:39 PM

#

No, that only sets what's displayed inside the window

#

I've already figured it out, though it needs a bit of pyglet, which arcade should already have

#

# Get the display screen using pyglet
display = pyglet.canvas.Display()
screen = display.get_default_screen()

# Set variables for use
self.screen_width = screen.width
self.screen_height = screen.height

# Center the window
self.set_location((self.screen_width - WIDTH) // 2, (self.screen_height - HEIGHT) // 2)

This is inside the __init__() function of Window

#

Here's the code if anyone wants to see

dense marsh Apr 17, 2020, 12:40 AM

#

is there a way for pygame to prompt a window or something to take in an input

dreamy swan Apr 17, 2020, 2:42 AM

#

I asked before and never got an answer...
This is probably a stupid question... but arcade works on Linux correct?

iron galleon Apr 17, 2020, 2:50 AM

#

yes it does

#

and don't worry, that isn't a stupid question lemon_pleased

dreamy swan Apr 17, 2020, 2:53 AM

#

Thanks...
I just recently moved over to Linux so I was just asking

potent ice Apr 17, 2020, 7:01 AM

#

There is one possible issue I know of if you are using wayland

#

but that is solvable

low tide Apr 17, 2020, 11:59 AM

#

arcade.DrawText() errors out with an invalid pointer

#

happened to anyone else? I was following thr tutorial and when I tried to print the score it crashes.

#

GWeniSadNeko

dusk ibex Apr 17, 2020, 12:58 PM

#

hello

#

Exception has occurred: Exception
Error: Attempt to draw a sprite without a texture set.

#

I keep getting this error

#

I even tried running the sample code in the platformer

low tide Apr 17, 2020, 1:01 PM

#

To me it happened when I gave the wrong path to the file

#

Try and check that

merry echo Apr 17, 2020, 1:01 PM

#

hey yall anyone wanna code buddies?

dusk ibex Apr 17, 2020, 1:02 PM

#

You mean a team?

merry echo Apr 17, 2020, 1:05 PM

#

no, just somebody to share each other's progress and motivate each other and stuff

dusk ibex Apr 17, 2020, 1:06 PM

#

yeee

#

@low tide thanks!

#

it worked with the correct path

low tide Apr 17, 2020, 1:11 PM

#

@dusk ibex np!!

proper tendon Apr 18, 2020, 8:40 AM

#

hi, does anyone know how I can find the number of times a number was divided before it returns the modulo value

#

for example 807 % 10 returns 7

#

I want to find 8r7

raven swift Apr 18, 2020, 8:40 AM

#

807 // 10

proper tendon Apr 18, 2020, 8:41 AM

#

oh, ok Ill try that

#

what is the name of that operation?

raven swift Apr 18, 2020, 8:41 AM

#

floor division

proper tendon Apr 18, 2020, 8:41 AM

#

thanks

raven swift Apr 18, 2020, 8:42 AM

#

Coding has always been a hobby of mine, I recently started learning game dev... any suggestion on how to really get started with it?

proper tendon Apr 18, 2020, 8:42 AM

#

so I use a combination of floor division and modulo I guess

#

for example, I want to calculate how many pages I need for 807 entries with 10 entries per page

#

so 807//10 returns 8(pages

#

807%10 returns 7 (the number on the last page

#

if there is any remaining

#

@raven swift what do you want to do, make your own game, or learn the architecture ?

#

I dont know much about python game dev, but I have worked in the games industry for a while, UE4 and Unity are go-to engines to learn the overall gamedev process, if you want to build it from the ground up you need to write your own engine. RayLib is a popular library which has bindings to python

#

it abstracts the rendering/input code so you can start coding game systems

#

if you want full control you want to start learning a graphics API, and build up from there, raylib basically abstracts the graphics API to an easy to use set of classes

raven swift Apr 18, 2020, 9:15 AM

#

i just started with pygame... i made some easy stuff like snakes game
i have no idea how to move fwd

#

@proper tendon

merry echo Apr 18, 2020, 9:15 AM

#

aw man you just missed the #693133279674630264 if you wanted to make games

raven swift Apr 18, 2020, 9:16 AM

#

thats ok

merry echo Apr 18, 2020, 9:16 AM

#

well start from making simple games (Snake, Tetris, etc) then work your way up to more complex stuff

raven swift Apr 18, 2020, 9:17 AM

#

so is pygame the right thing?

#

or as toku suggested, use unity and other engines

merry echo Apr 18, 2020, 9:17 AM

#

if you want to code with python, then you can use pygame

#

but if you want to use unity, you gotta know either JavaScript, or C#

#

UE4, on the other hand, uses C++

raven swift Apr 18, 2020, 9:19 AM

#

can pygame applications be turned into personal phone apps?

proper tendon Apr 18, 2020, 9:19 AM

#

UE4 also has blueprints, which are pretty good for quickly prototyping games

raven swift Apr 18, 2020, 9:21 AM

#

My main experience is in api devp and data science... just wanted to tap into this as an interest, not for proffesional purpose

merry echo Apr 18, 2020, 9:23 AM

#

well its up to you what you want to use then

proper tendon Apr 18, 2020, 9:23 AM

#

it depends on what kind of game you want to make

raven swift Apr 18, 2020, 9:23 AM

#

multiplayer card games right now

#

for just 4-10 people

proper tendon Apr 18, 2020, 9:24 AM

#

well, if it's a 2d card game, you can probably write it and it will run smoothly in python, if its a 3d game which uses the latest rendering technologies, you will want to use some engine, or make one

merry echo Apr 18, 2020, 9:24 AM

#

whats the platform?

#

mobile

#

pc or web

raven swift Apr 18, 2020, 9:25 AM

#

mobile

#

2d yes

merry echo Apr 18, 2020, 9:28 AM

#

honestly I don't know much about mobile support on Python, there doesn't seem to be a community around it, but it can be done as seen here
https://www.reddit.com/r/Python/comments/2ak14j/made_my_first_android_app_in_under_5_hours_using/

r/Python - Made my first Android app in under 5 hours using pygame ...

26 votes and 27 comments so far on Reddit

#

There's also another framework in python which could work in mobile, which is Kivy

raven swift Apr 18, 2020, 9:31 AM

#

alright thanks a lot.. will surely look these up

#

🙂

merry echo Apr 18, 2020, 10:40 AM

#

Who here has used box2D before?

still shard Apr 18, 2020, 10:50 AM

#

!ask

frank fieldBOT Apr 18, 2020, 10:50 AM

#

Asking good questions will yield a much higher chance of a quick response:

• Don't ask to ask your question, just go ahead and tell us your problem.
• Don't ask if anyone is knowledgeable in some area, filtering serves no purpose.
• Try to solve the problem on your own first, we're not going to write code for you.
• Show us the code you've tried and any errors or unexpected results it's giving.
• Be patient while we're helping you.

You can find a much more detailed explanation on our website.

silent spade Apr 18, 2020, 11:27 AM

#

Hi guys, I'm using this tutorial: https://ehmatthes.github.io/pcc_2e/beyond_pcc/pygame_sprite_sheets/ to load some sprites from a sprite sheet. However, when I run my game, I get pygame.error: Invalid resolution for Surface at image = pygame.Surface(rect.size).convert(). The full stack trace is here: https://paste.pythondiscord.com/kohudahipu.py can anyone suggest why the error would occur?

#

The full function load_grid_images: https://paste.pythondiscord.com/alutocusub.py

merry echo Apr 18, 2020, 1:43 PM

#

I don't actually have a problem I just want to know if I got anyone uses Box2D

low tide Apr 18, 2020, 6:22 PM

#

with arcade can I draw something inside the on_key_press function?

#

I'm trying with arcade.draw_rectangle_filled but there's nothing

#

I do have a start_render and finish_render

frozen knoll Apr 18, 2020, 6:24 PM

#

No, you should not draw anything in on_key_press.

#

Keep the drawing to the on_draw.

low tide Apr 18, 2020, 6:24 PM

#

I know, I'm just testing out stuff

#

also, why the heck does the drawing change when I move the mouse?

#

I'll upload a gif

frozen knoll Apr 18, 2020, 6:26 PM

#

Not sure what you mean. on_draw is called roughly 60 times per second. More if you move the mouse.

low tide Apr 18, 2020, 6:26 PM

#

Ah

#

makes sense then

dawn quiver Apr 19, 2020, 12:05 AM

#

Hey guys, so I have decided that I want to create my own Python game. Do you know where I should start?

round obsidian Apr 19, 2020, 1:32 AM

#

@dawn quiver Check out a tutorial for one of the existing frameworks (the author of the Arcade framework is in here often), clone that, modify it, use that as a basis for understanding how things work.

cold storm Apr 19, 2020, 2:58 AM

#

UPBGE is pretty fun too

#

if you want a high end graphics api coupled with your game

valid seal Apr 19, 2020, 3:44 AM

#

anyone know how to get rid of this warning

📎 unknown.png

#

i had to mess around with some things to get pygame to actually work

#

{
  "python.linting.pylintArgs": [
          "--extension-pkg-whitelist=pygame"
    ]
}

#

had to add that to vsc settings.json

#

which worked and fixed the issue

#

pygame works

#

however that warning now pops up everywhere saying it doesn't conform to UPPER_CASE naming style

#

also tried to add "--disable=C0103"

#

which fixed a few of the warnings but not all of them

pale star Apr 19, 2020, 2:22 PM

#

hi hi, random question can a pygame game be deployed for mobile?

dawn quiver Apr 19, 2020, 3:49 PM

#

@round obsidian sorry for the late reply. But thank you for your advance. Someone else said that same thing

#

Do you know who the author of the Arcade framework is?

iron galleon Apr 19, 2020, 4:53 PM

#

Paul Craven

#

scroll up in this chat a little bit and you'll see him

icy scaffold Apr 19, 2020, 6:02 PM

#

Hello, could somebody help me with writing my pay game collision code?

#

YouTube isn’t very helpful

#

pygame**

gusty hinge Apr 19, 2020, 6:05 PM

#

Should I be using Panda3d for 2d game development with Python, or is that just a bad idea? I noticed Cocos is a Chinese technology so I passed on it immediately.

#

And PyGame seems to be too old from what I've read.

#

It's also not entirely clear to me that Python can be used in place of C# in Unity

edgy shadow Apr 19, 2020, 6:11 PM

#

hey lads do any of you have experience with the pygame GUI module?

near wedge Apr 19, 2020, 10:00 PM

#

@gusty hinge Panda3D can be used for 2D game development, but you might want to take a look at Arcade before going down that road.

#

You'll have a much better experience with an engine that's more tailored to 2D.

gusty hinge Apr 19, 2020, 10:12 PM

#

@near wedge awesome thanks!

empty crescent Apr 19, 2020, 11:10 PM

#

                      gameState[(x)     % nxC, (y - 1) % nyC] + \
                      gameState[(x + 1) % nxC, (y - 1) % nyC] + \
                      gameState[(x - 1) % nxC, (y)     % nyC] + \
                      gameState[(x + 1) % nxC, (y)     % nyC] + \
                      gameState[(x - 1) % nxC, (y + 1) % nyC] + \
                      gameState[(x)     % nxC, (y + 1) % nyC] + \
                      gameState[(x + 1) % nxC, (y + 1) % nyC]```

#

In the first line the ""

#

Says unexpected character after line continuation character

#

I dont know why its unexpected

frozen knoll Apr 20, 2020, 3:18 AM

#

@dawn quiver http://arcade.academy and learn.arcade.academy were created to try and get people up and running making 2d games with python as quick as possible.

#

There are a lot of other good libraries out there too, but I can answer questions on Arcade.

dawn quiver Apr 20, 2020, 4:44 AM

#

okay thanks @frozen knoll

ebon osprey Apr 20, 2020, 5:03 AM

#

Is it possible to make VR games in python?

near wedge Apr 20, 2020, 5:43 AM

#

@ebon osprey Not without quite a bit of work.

ebon osprey Apr 20, 2020, 5:47 AM

#

But it is

near wedge Apr 20, 2020, 7:12 AM

#

@ebon osprey you'd likely have to write the lense distortion shader yourself and handle the HMD input along with all the tricks to make players not sick.

ebon osprey Apr 20, 2020, 7:13 AM

#

Tbh I literally don't understand a single term in that.

near wedge Apr 20, 2020, 7:13 AM

#

So, it's possible in a "anything" is possible sense, but I do not know of any python library that has any builtin VR capabilities

ebon osprey Apr 20, 2020, 7:14 AM

#

Right now I'm just looking for a field in python where I'm gonna practice and improve as well as focus in that only

#

So like just gathering up different roads

mossy osprey Apr 20, 2020, 12:12 PM

#

If you’re a beginner I would recommend just starting out with 2d games

#

and then adding layers onto them e.g. lives, health bar, improved HUD

frozen knoll Apr 20, 2020, 12:16 PM

#

Yes, keep it very, very simple. Then just add things as you have time.

wary tiger Apr 20, 2020, 12:25 PM

#

How do I learn

frozen knoll Apr 20, 2020, 12:30 PM

#

Https://learn.arcade.academy

#

There are a lot of other resources out there too.

bright jungle Apr 20, 2020, 12:34 PM

#

What's the best python game out there?

#

I'm just comparing python to Haxe/JS/C# to see what's best for making desktop games

fierce wraith Apr 20, 2020, 12:56 PM

#

@frozen knoll can i find the docs for the shader experimental branch somewhere?

frozen knoll Apr 20, 2020, 12:58 PM

#

I'll refresh them on arcade.academy.

#

What's up there now is based on current source.

fierce wraith Apr 20, 2020, 1:10 PM

#

do you have a link for that?

#

oh

cold kestrel Apr 20, 2020, 1:22 PM

#

In real life, mechanics is a part of physics. In games, physics is a part of mechanics.

wary tiger Apr 20, 2020, 2:40 PM

#

how do i make a jump function that changes by running

frozen knoll Apr 20, 2020, 3:25 PM

#

Check your velocity when responding to the jump?

tulip tinsel Apr 20, 2020, 5:57 PM

#

how can i get around the situation where I change the direction the character is moving in from left to right and then release the key to move left and stop moving?

#

code:

    def on_key_press(self, key, modifiers):
        if key == arcade.key.W:
            self.player_sprite.change_y = PLAYER_MOVEMENT_SPEED
        elif key == arcade.key.S:
            self.player_sprite.change_y = -PLAYER_MOVEMENT_SPEED
        if key == arcade.key.A:
            self.player_sprite.change_x = -PLAYER_MOVEMENT_SPEED
        elif key == arcade.key.D:
            self.player_sprite.change_x = PLAYER_MOVEMENT_SPEED

    def on_key_release(self, key, modifiers):
        if key == arcade.key.W:
            self.player_sprite.change_y = 0
        elif key == arcade.key.A:
            self.player_sprite.change_x = 0
        elif key == arcade.key.D:
            self.player_sprite.change_x = 0
        elif key == arcade.key.S:
            self.player_sprite.change_y = 0

frozen knoll Apr 20, 2020, 5:58 PM

#

You probably want this:
https://arcade.academy/examples/sprite_move_keyboard_better.html#sprite-move-keyboard-better

tulip tinsel Apr 20, 2020, 5:58 PM

#

if I am holding A and then change to D when I release A the character stops because, well it is supposed to

#

oh, thanks!

#

I'll take a look

frozen knoll Apr 20, 2020, 5:58 PM

#

The logic is a bit more complex, but it covers what you are talking about.

dense marsh Apr 20, 2020, 7:52 PM

#

hey i got a pygame problem, is anyone here able to help me out\

#

it would be m u c h appreciated

#

it's sorta long ish? but i dont think so, im just new and bad at coding and explaining stuff so

wary tiger Apr 20, 2020, 10:50 PM

#

@dense marsh I can try helping

dense marsh Apr 20, 2020, 10:51 PM

#

omg thank you so much

wary tiger Apr 20, 2020, 10:51 PM

#

I know pygame and turtle but I'm trying to learn whatever the arcade thing is

dense marsh Apr 20, 2020, 10:51 PM

#

i've heard that someone before

#

i think

wary tiger Apr 20, 2020, 10:51 PM

#

??

#

I'm gonna shower brb

#

Lol

#

I'll help u after

dense marsh Apr 20, 2020, 10:55 PM

#

LMAO okay cool cool thanks a ton

#

this has been really annoying

wary tiger Apr 20, 2020, 10:55 PM

#

Or I can help rn

dense marsh Apr 20, 2020, 10:55 PM

#

go take your shower

#

i'll wait

wary tiger Apr 20, 2020, 10:55 PM

#

Lol I'll help now if u want what is it

#

U went afk

dense marsh Apr 20, 2020, 10:56 PM

#

okay

#

so basically player_y is in the player class right now

#

and i have the function to update it (move the rectangle on the screen increasing or decreasing player_y) with the key press

#

so now im trying to set up collisions but i can't without having that up to date player_y value

#

because when i put player_y into the ball class it just stays at its primary value

#

how do i fix this

#

i feel like its a small fix but im just dumb

wary tiger Apr 20, 2020, 10:58 PM

#

Wait u put player_y in the ball class what 🤣 show me your code

dense marsh Apr 20, 2020, 10:58 PM

#

LMFAOOO

wary tiger Apr 20, 2020, 10:58 PM

#

What u talkin about

#

Show me

dense marsh Apr 20, 2020, 10:59 PM

#

im making pong

#

here i'll dm it cause its over 2000 words

wary tiger Apr 20, 2020, 10:59 PM

#

Show the ball class

#

I'll help u

#

I used to run into those errors with pong

dense marsh Apr 20, 2020, 10:59 PM

#

class Ball(): #pong ball class

    def __init__(self, ball_x, ball_y, ball_size, ball_speed_x, ball_speed_y):
        self.ball_x = ball_x
        self.ball_y = ball_y
        self.ball_size = ball_size
        self.ball_speed_x = ball_speed_x
        self.ball_speed_y = ball_speed_y
        self.player_one = Players(player_x=50, player_y=215, xsize=25, ysize=120, yspeed=6)
        self.player_two = Players(player_x=930, player_y=215, xsize=25, ysize=120, yspeed=6)

    def draw(self):
        pygame.draw.circle(SCREEN, WHITE, (self.ball_x, self.ball_y), self.ball_size)

    def move(self):
        self.ball_x += self.ball_speed_x
        self.ball_y += self.ball_speed_y

    def screen_bounds(self):
        if self.ball_y >= S_HEIGHT:
            self.ball_speed_y -= 3

        elif self.ball_y <= 0:
            self.ball_speed_y += 2

    def collision(self):
        pass

#

class Players(): #two players class

    def __init__(self, player_x, player_y, xsize, ysize, yspeed):
        self.player_x = player_x
        self.player_y = player_y
        self.xsize = xsize
        self.ysize = ysize
        self.yspeed = yspeed

    def player_one(self):

        global foo

        pygame.draw.rect(SCREEN, WHITE, (self.player_x, self.player_y, self.xsize, self.ysize))

        if event.type == pygame.KEYDOWN:

            if event.key == pygame.K_s:
                self.player_y += self.yspeed

            elif event.key == pygame.K_w:
                self.player_y -= self.yspeed

            foo = self.player_y


    def player_two(self):
        pygame.draw.rect(SCREEN, WHITE, (self.player_x, self.player_y, self.xsize, self.ysize))

        if event.type == pygame.KEYDOWN:

            if event.key == pygame.K_UP:
                self.player_y -= self.yspeed

            elif event.key == pygame.K_DOWN:
                self.player_y += self.yspeed

wary tiger Apr 20, 2020, 11:00 PM

#

I made pong with turtle but I'll think

dense marsh Apr 20, 2020, 11:00 PM

#

there should be a print statement in the collision() function - self.player_one.player_y

#

okay

wary tiger Apr 20, 2020, 11:01 PM

#

What's the error and I'll look

#

What is it not doing right and I'll help

dense marsh Apr 20, 2020, 11:01 PM

#

okay so its a logic error

#

its not a i cant run the code error

#

so when i print player_y in the player class it updates as i move the rectangle up and down on the screen

#

(i.e. - 150, 166, 178.....)

#

but when i put the same print statement in the ball class LMFAO it stays at 150

#

it doesn't update, even though im moving the rectangle up and down

wary tiger Apr 20, 2020, 11:03 PM

#

Did you make a while true wn.update or pass

#

while True:
    wn.update()

#

Something like that

dense marsh Apr 20, 2020, 11:04 PM

#

yes here i'll link it in now

#

def main(): #runs the program
    SCREEN.fill(BLACK)
    split()
    rectangles()
    pong()
    score()
    pygame.display.update()
    clock.tick(FPS)```

#

running = True

while running:

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    main()

pygame.quit()```

wary tiger Apr 20, 2020, 11:05 PM

#

Does it work now?

dense marsh Apr 20, 2020, 11:05 PM

#

no it doesn't work

#

thats why im asking the question

wary tiger Apr 20, 2020, 11:06 PM

#

Did you not define anything

dense marsh Apr 20, 2020, 11:06 PM

#

yess

wary tiger Apr 20, 2020, 11:06 PM

#

Missing something??

dense marsh Apr 20, 2020, 11:06 PM

#

here im just gonna send you my code

#

import pygame
import random
pygame.init()
#screen
S_WIDTH = 1000
S_HEIGHT = 600
SCREEN = pygame.display.set_mode((S_WIDTH, S_HEIGHT))
pygame.display.set_caption("pong")
#colors
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
#clock
FPS = 60
clock = pygame.time.Clock()
#for the line in the middle
margin = 5
#ball
ball_x = S_WIDTH//2
ball_y = S_HEIGHT//2
ball_speed = 5

def main(): #runs the program
    SCREEN.fill(BLACK)
    split()
    rectangles()
    pong()
    score()
    pygame.display.update()
    clock.tick(FPS)

class Players(): #two players class

    def __init__(self, player_x, player_y, xsize, ysize, yspeed):
        self.player_x = player_x
        self.player_y = player_y
        self.xsize = xsize
        self.ysize = ysize
        self.yspeed = yspeed

    def player_one(self):

        global foo

        pygame.draw.rect(SCREEN, WHITE, (self.player_x, self.player_y, self.xsize, self.ysize))

        if event.type == pygame.KEYDOWN:

            if event.key == pygame.K_s:
                self.player_y += self.yspeed

            elif event.key == pygame.K_w:
                self.player_y -= self.yspeed

            foo = self.player_y


    def player_two(self):
        pygame.draw.rect(SCREEN, WHITE, (self.player_x, self.player_y, self.xsize, self.ysize))

        if event.type == pygame.KEYDOWN:

            if event.key == pygame.K_UP:
                self.player_y -= self.yspeed

            elif event.key == pygame.K_DOWN:
                self.player_y += self.yspeed


class Ball(): #pong ball class```

#


    def __init__(self, ball_x, ball_y, ball_size, ball_speed_x, ball_speed_y):
        self.ball_x = ball_x
        self.ball_y = ball_y
        self.ball_size = ball_size
        self.ball_speed_x = ball_speed_x
        self.ball_speed_y = ball_speed_y
        self.player_one = Players(player_x=50, player_y=215, xsize=25, ysize=120, yspeed=6)
        self.player_two = Players(player_x=930, player_y=215, xsize=25, ysize=120, yspeed=6)

    def draw(self):
        pygame.draw.circle(SCREEN, WHITE, (self.ball_x, self.ball_y), self.ball_size)

    def move(self):
        self.ball_x += self.ball_speed_x
        self.ball_y += self.ball_speed_y

    def screen_bounds(self):
        if self.ball_y >= S_HEIGHT:
            self.ball_speed_y -= 3

        elif self.ball_y <= 0:
            self.ball_speed_y += 2

    def collision(self):
        pass

def split(): #splits screen in half
    line_x = S_WIDTH//2
    line_y = S_HEIGHT

    for i in range(S_HEIGHT):
        pygame.draw.rect(SCREEN, WHITE, (line_x, line_y, margin, margin))
        line_y -= 10

#

def pong():
    ball.draw()
    ball.move()
    ball.screen_bounds()
    ball.collision()

def rectangles(): #two player rectangles
    Player_one.player_one()
    Player_two.player_two()

def score(): #keeps scores

    playerone_points = 0
    playertwo_points = 0

    # RIGHT PLAYERS POINTS
    myFont = pygame.font.SysFont("monospace", 80)
    text = str(playerone_points)
    label = myFont.render(text, 1, WHITE)
    SCREEN.blit(label, (S_WIDTH//2 + 75, 500))

    #LEFT PLAYERS POINTS
    Myfont = pygame.font.SysFont("monospace", 80)
    text = str(playertwo_points)
    Label = Myfont.render(text, 1, WHITE)
    SCREEN.blit(Label, (S_WIDTH//2 - 115, 500))

#objects on screen
Player_one = Players(player_x=50, player_y=215, xsize=25, ysize=120, yspeed=6)
Player_two = Players(player_x=930, player_y=215, xsize=25, ysize=120, yspeed=6)
ball = Ball(ball_x=S_WIDTH//2, ball_y=S_HEIGHT//2, ball_size=20, ball_speed_x=-3, ball_speed_y=random.randrange(0, 2))

running = True

while running:

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    main()

pygame.quit()```

wary tiger Apr 20, 2020, 11:08 PM

#

while running: 
      pass

#

Maybe?

#

Try that

#

I'm on mobile rn

#

I'll hop on PC in about 20min

dense marsh Apr 20, 2020, 11:09 PM

#

alright sounds good

#

also that wont work lol my game would literally not work at all if i pass

#

nothing would load

wary tiger Apr 20, 2020, 11:10 PM

#

Hmmmm

#

I'm not good at pygame off the top of my head without being on my computer hard to explain

#

I'm good with turtle tho

#

Actually hold on

dense marsh Apr 20, 2020, 11:12 PM

#

LMAO okay

#

take your time no rush man

#

i've been trying to figure this out since this morning

wary tiger Apr 20, 2020, 11:12 PM

#

U have something like this???

#

while True: for event in pygame.event.get(): if event.type == pygame.QUIT: pygame.quit() sys.exit() if event.type == pygame.KEYDOWN: if event.key == pygame.K_UP: player_speed -= 6 if event.key == pygame.K_DOWN: player_speed += 6 if event.type == pygame.KEYUP: if event.key == pygame.K_UP: player_speed += 6 if event.key == pygame.K_DOWN: player_speed -= 6

dense marsh Apr 20, 2020, 11:13 PM

#

yesss

#

thats the controls

wary tiger Apr 20, 2020, 11:13 PM

#

The while true part

dense marsh Apr 20, 2020, 11:13 PM

#

ohh

#

no

#

im 99.9% sure that wont work

#

but i'll try it cause im out of ideas

#

lol yup didnt work

#

my game crashed

wary tiger Apr 20, 2020, 11:15 PM

#

I'm on mobile so format bad but u should have this after your while true
Game Logic ball_animation() player_animation() opponent_ai() # Visuals screen.fill(bg_color) pygame.draw.rect(screen, light_grey, player) pygame.draw.rect(screen, light_grey, opponent) pygame.draw.ellipse(screen, light_grey, ball) pygame.draw.aaline(screen, light_grey, (screen_width / 2, 0),(screen_width / 2, screen_height)) pygame.display.flip() clock.tick(60)

#

I'll send code after LMAOOO

dense marsh Apr 20, 2020, 11:15 PM

#

LMFAO YES THANK YOU

wary tiger Apr 20, 2020, 11:16 PM

#

🤣🤣

#

That format 🤣🤣🤣🤣

dense marsh Apr 20, 2020, 11:16 PM

#

beautiful

wary tiger Apr 20, 2020, 11:16 PM

#

Ok ima brb sit tight before u explode

dense marsh Apr 20, 2020, 11:16 PM

#

alright sounds good

wary tiger Apr 20, 2020, 11:34 PM

#

ok im on now @dense marsh

#

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                player_speed -= 6
            if event.key == pygame.K_DOWN:
                player_speed += 6
        if event.type == pygame.KEYUP:
            if event.key == pygame.K_UP:
                player_speed += 6
            if event.key == pygame.K_DOWN:
                player_speed -= 6
    
    #Game Logic
    ball_animation()
    player_animation()
    opponent_ai()

    # Visuals 
    screen.fill(bg_color)
    pygame.draw.rect(screen, light_grey, player)
    pygame.draw.rect(screen, light_grey, opponent)
    pygame.draw.ellipse(screen, light_grey, ball)
    pygame.draw.aaline(screen, light_grey, (screen_width / 2, 0),(screen_width / 2, screen_height))

    pygame.display.flip()
    clock.tick(60)

#

it should end like that

dense marsh Apr 20, 2020, 11:42 PM

#

oh okay i'll try it

wary tiger Apr 20, 2020, 11:42 PM

#

did u try ??

#

im gonna be coding the snake game in pygame lol

dense marsh Apr 20, 2020, 11:47 PM

#

oh sorry back

#

also no that didnt work

wary tiger Apr 20, 2020, 11:48 PM

#

wtf did u do lolll

dense marsh Apr 20, 2020, 11:48 PM

#

should it work

#

wait brb let me figure this out

wary tiger Apr 20, 2020, 11:48 PM

#

ok

#

did u def the collisions btw

dense marsh Apr 20, 2020, 11:50 PM

#

no thats the problem

#

also yeah that doesnt work because you cant do that

#

for the pygame.draw.rect

#

all i want is to be able to get player_y value thats in class player into class ball

static elbow Apr 21, 2020, 1:08 AM

#

If there is anyone out there who knows what SacnturaryRPG is, would it be possible to remake SancturaryRPG with python instead of C++? If so, how would you make the program execute in a whole new tab like in SancturaryRPG? How would you color the text like in SancturaryRPG?

wary tiger Apr 21, 2020, 1:27 AM

#

TypeError: list indices must be integers or slices, not tuple
[Finished in 2.6s]

#

fix???

#

snake_pos=[[250,250][240,250],[230,250]]

#

is the line

#

nvm im dumb

tulip tinsel Apr 21, 2020, 3:37 AM

#

is the top left of the screen (0, 0)

#

and the bottom right (screenwidth, screenheight)

#

?

potent ice Apr 21, 2020, 4:37 AM

#

In arcade 0,0 is bottom left

gray stump Apr 21, 2020, 11:03 AM

#

Hey :D

#

does anyone know PY03?

#

the thing with rust

#

i need help with it

dense marsh Apr 21, 2020, 11:18 AM

#

im trying to make like a pause screen in pygame but for some reason

#

if i make a while loop in the foor loop the game crashes lol

#

can you not have a while loop in a for loop in another while loop

leaden minnow Apr 21, 2020, 11:41 AM

#

Hi, everyone

tulip tinsel Apr 21, 2020, 1:04 PM

#

@potent ice thx

tulip tinsel Apr 21, 2020, 2:05 PM

#

I'm just wondering:

when I call:
self.physics_engine.update()
that will handle moving my player so that when I call:

#

self.player_list.update()

#

I don't have to do:

self.center_x += self.change_x
self.center_y += self.change_y

inside of the player on_update function

#

right?

#

or, that leads me to the question; should I be using self.physics_engine.update() and self.player_list.update()?

#

because the player update handles going off screen or not

#

while my physics_engine was handling collisions and stuff

jovial fable Apr 21, 2020, 2:55 PM

#

i think both, physics engine only update your player against 1 list

#

for example, my characters are animated, and they wouldn't be updated if i didn't call their update i believe

#

ah that's mainly because i overide update method it seems

tulip tinsel Apr 21, 2020, 3:25 PM

#

how does this work?

right_boundary = self.view_left + RIGHT_VIEWPORT_MARGIN
        if self.player_sprite.right > right_boundary:
            self.view_left += self.player_sprite.right - right_boundary
            changed = True

#

Can someone explain why I have to subtract the right boundary

#

I'm using code from this script: https://arcade.academy/examples/platform_tutorial/index.html#step-5-add-scrolling

tulip tinsel Apr 21, 2020, 3:55 PM

#

I think I got it!
Basically, the right boundary is going to equal the left side of the screen plus the padding (margin). The player will always be right to the left that margin because if he crosses it, it moves forward again, it's like he's chasing it. When he crosses it, the left view is going to equal the right side of the character, minus the old left side of the screen, minus the margin. If we didn't subtract the margin then only the right pixel of the character would be viewable, but, since the right margin is basically the padding we subtract it and everything works fine!

potent ice Apr 21, 2020, 3:56 PM

#

Something like that. We should add some kind of Camera to make this easier

#

That supported scrolling and zooming

tulip tinsel Apr 21, 2020, 3:57 PM

#

yeah that would be helpful

potent ice Apr 21, 2020, 3:58 PM

#

Also, right now there is no separation between viewport and projection, so it's a bit more tricky to support window resizing if you want your content to stretch with the screen

tulip tinsel Apr 21, 2020, 3:59 PM

#

yeah, i can imagine, it would be harder if you also had calculate zooming out, to out of curiosity, do you work on developing the Arcade library?

potent ice Apr 21, 2020, 4:03 PM

#

Only recently. Because of this code jam me and paul made the experimental branch. It's kind of a collaboration thing between arcade and the moderngl project. I'm adding a more fancy low level rendering api and helping with optimizing. Both projects benefit from it.

#

Also new features like post processing and lighting + possibly more

tulip tinsel Apr 21, 2020, 4:05 PM

#

oh, i saw those actually, those looked pretty cool!

potent ice Apr 21, 2020, 4:06 PM

#

It's a small start, but we have to build on it.

#

Can do shadows, bump mapping and fun things like that in the future. Also add new light types 🙂

#

Like a flash light with fog/dust in the light area 🙂

tulip tinsel Apr 21, 2020, 4:08 PM

#

that would be very cool :D

#

flash light's with fog require some pretty hard shaders, i bet

potent ice Apr 21, 2020, 4:09 PM

#

In 2D it's not that hard. The hard part is making it look nice.

#

3D is much harder

#

With perlin/simplex noise you can combine 2-3 slightly scrolling layers and it can be enough to look decent

#

It's not anything remotely fancy. You can find ready made functions for that.

#

But.. all this suff combined is a lot of work of course. It's amazing how much work goes into libraries like arcade over time.

#

The long term plan was to document and expose the low level rendering api so people could play with it (shaders etc). It's not that scary, and you can do some amazing things.

#

That's just the small part of arcade I'm really working on. The rest is Paul's work mainly.

#

I don't have a decade of experience teaching programming and game dev like he, so it's easier to work on the low level hidden stuff and let him use that to build something that is presentable to the user.

tulip tinsel Apr 21, 2020, 4:47 PM

#

it's amazing how there can be a library that great, and that big, with only 2 people working on it

potent ice Apr 21, 2020, 4:49 PM

#

There are lots of contributors, but I guess Paul has done like 90% of it.

#

He's using arcade to teach, so he probably had a lot of time over the last couple of years to iterate on things.

#

(I've only worked on arcade in the last couple of weeks, and only a smaller part of it)

tulip tinsel Apr 21, 2020, 5:41 PM

#

oh, well still, that is really cool

#

how could i do it where the character is centered on the screen until it gets to the point where if the player is centered it would show below the screen?

#

im making a 2D platformer.

#

in other words, the player is centered until a certain point when the bottom of the screen becomes locked in place

#

my code:

        changed = False

        left_boundary = self.view_left + LEFT_VIEWPORT_MARGIN
        if self.player_sprite.left < left_boundary:
            self.view_left -= left_boundary - self.player_sprite.left
            changed + True

        right_boundary = self.view_left + RIGHT_VIEWPORT_MARGIN
        if self.player_sprite.right > right_boundary:
            self.view_left += self.player_sprite.right - right_boundary
            changed = True

        top_boundary = self.view_bottom + SCREEN_HEIGHT / 2 + TOP_VIEWPORT_MARGIN
        if self.player_sprite.top > top_boundary:
            self.view_bottom += self.player_sprite.top - top_boundary
            changed = True

        bottom_boundary = self.view_bottom + BOTTOM_VIEWPORT_MARGIN
        if self.player_sprite.bottom < bottom_boundary:
            self.view_bottom -= bottom_boundary - self.player_sprite.bottom
            print(self.view_bottom)
            changed = True

        if changed:
            self.view_left = int(self.view_left)
            self.view_bottom = int(self.view_bottom)
            arcade.set_viewport(self.view_left, SCREEN_WIDTH + self.view_left, self.view_bottom, self.view_bottom + SCREEN_HEIGHT)

potent ice Apr 21, 2020, 5:56 PM

#

I usually draw that on paper to figure it out.

tulip tinsel Apr 21, 2020, 5:56 PM

#

alright, i'll give it a shot and report back

#

well, this is actually going well, i now have the character centered

#

alright, cool! I wrote some code that works and am happy with it!

#

change the top and bottom boundary parts to this:

top_boundary = self.view_bottom + SCREEN_HEIGHT / 2
        if self.player_sprite.top > top_boundary:
            if self.view_bottom + (self.player_sprite.top - top_boundary) > 0:
                self.view_bottom += self.player_sprite.top - top_boundary
                changed = True
            else:
                self.view_bottom = 0

        bottom_boundary = self.view_bottom + SCREEN_HEIGHT / 2
        if self.player_sprite.bottom < bottom_boundary:
            if self.view_bottom - (bottom_boundary - self.player_sprite.bottom) > 0:
                self.view_bottom -= bottom_boundary - self.player_sprite.bottom
                changed = True
            else:
                self.view_bottom = 0

#

okay one last thing, is there any built in functionality for smooth scrolling?

cold storm Apr 21, 2020, 6:42 PM

#

@tulip tinsel lerp is nice

#

<@&267628507062992896> can we add UPBGE to the top bar description?

#

0.2.5 releases soon - (it's a bug fixing release on the 'legacy' branch)

#

and 0.3.0 is in alpha

untold lodge Apr 21, 2020, 6:45 PM

#

maybe you can tell us what that is?

cold storm Apr 21, 2020, 6:45 PM

#

[blender game engine in blender 2.8x using eevee as a render]

#

right now it's actually based on blender 2.9x

#

https://www.youtube.com/watch?v=zrhpgR9QYWQ

YouTube

Jacob Merrill

Pathfinder over N frames (10 tiles per frame atm)

▶ Play video

#

this is using python to do everything

#

including pathfinding etc

untold lodge Apr 21, 2020, 6:46 PM

#

since I've never heard of it, and never seen anyone in this community talk about it, it seems like a poor fit for the channel topic.

cold storm Apr 21, 2020, 6:46 PM

#

https://upbge.org/

#

Blender game engine has been around for years

#

but the whole time it's creators were trying to kill it

#

while the community was trying to keep it alive

#

this spawned a fork

#

UP(BGE)

#

they have been upgrading / maintaining the engine for like 5+ years now

#

the alpha version gives you access to using EEVEE to make games

#

EEVEE is a openGL wrapper for 3.3+

#

BGL modul is pyOpenGL basically that is built in and GPU module extends it

untold lodge Apr 21, 2020, 6:49 PM

#

looks like you've mentioned upbge in this community about 8 million times, but otherwise there are 6 other people who have ever mentioned it and half of them were asking you what it was.

#

I'm sure it's nice, but the topic is supposed to give a few examples of popular ones.

cold storm Apr 21, 2020, 6:49 PM

#

it's popular right now

#

there are like 4+ lundum dare entries finished using upbge

#

from this cycles

ember glade Apr 21, 2020, 6:50 PM

#

Sure, but the description isn't meant to be a comprehensive list, just an example of the kinds of stuff we cover

cold storm Apr 21, 2020, 6:51 PM

#

well it's robust and exists and is open source

#

just trying to get the word out

#

https://github.com/UPBGE/upbge

GitHub

UPBGE/upbge

UPBGE, the best integrated game engine in Blender. Contribute to UPBGE/upbge development by creating an account on GitHub.

#

it's growing right along with blender (on a fork using merge commits)

#

it is getting as good as the big boys but needs a few things finished first

#

(gpu armature skinning and taming the TAA)

potent ice Apr 21, 2020, 6:54 PM

#

0.01% of the people here understand those words

untold lodge Apr 21, 2020, 6:54 PM

#

youve mentioned it 158 times in this community so yeah I believe you are trying to get the word out. which is okay, I guess, glad to see you're passionate about it. but I don't think it belongs in the topic.

cold storm Apr 21, 2020, 6:54 PM

#

yeah maybe some of you could poke the engine with a stick and see if you like it

#

bge is like 30 years old

potent ice Apr 21, 2020, 6:55 PM

#

BGE is awesome. That I totally agree

cold storm Apr 21, 2020, 6:55 PM

#

have you tried the newer builds @potent ice ?

#

EEvEE etc?

potent ice Apr 21, 2020, 6:55 PM

#

yes

ember glade Apr 21, 2020, 6:55 PM

#

It's not really a matter of liking it or not. We're here for the users and they typically are coming here with specific engines in mind. So having ones that are generally recognizable (not ones that we have to ask "what's that?" on) makes the most sense. Again, not knocking the engine itself, but we've already given our answer about the channel description.

cold storm Apr 21, 2020, 6:56 PM

#

yeah

#

I am past that just discussing the thing

ember glade Apr 21, 2020, 6:56 PM

#

Okies

cold storm Apr 21, 2020, 6:56 PM

#

maybe it will grow in popularity now

#

(after it finishes beta)

potent ice Apr 21, 2020, 6:56 PM

#

For me personally BGE is overkill, but that depends on the project 🙂

#

.. but if you need the features it provides and it fits the project.. definitely a winner

wary tiger Apr 21, 2020, 7:28 PM

#

sup

near wedge Apr 21, 2020, 8:31 PM

#

I am not sure that the GPL license makes BGE/UPBGE a great recommendation without a warning/note. The license is one of the main reasons I stopped using the BGE (and thus having a reason to contribute to it). However, it was a pretty fun, easy-to-use engine otherwise. It's hard to beat that asset pipeline. 🙂

potent ice Apr 21, 2020, 8:32 PM

#

What restrictions does GPL add for you? (In practice)

cold storm Apr 21, 2020, 8:53 PM

#

None really

#

people sell games on steam right now

#

and use BPPlayer

wary tiger Apr 21, 2020, 8:53 PM

#

ppl

cold storm Apr 21, 2020, 8:53 PM

#

to encrypt their assets in a second blend

wary tiger Apr 21, 2020, 8:54 PM

#

hello Jacob Merrill

cold storm Apr 21, 2020, 8:54 PM

#

Hello

wary tiger Apr 21, 2020, 8:54 PM

#

lol

cold storm Apr 21, 2020, 8:54 PM

#

https://blenderartists.org/t/krum-battle-arena/1102157/236

Blender Artists Community

Krum - Battle Arena

Your progress in your game is astonishing. I do believe that its the best game made with the BGE. I have seen the awesome game that Fred is doing with the experimental version of UPBGE with EEVEE. I wander how far you would push it if you make a game with it.

#

so you can distribute to PC / windows / Linux without much effort

#

for Mobile we need to have a second shading mode eeveeLite ?

#

and some work needs to be done on a android blender player again

wary tiger Apr 21, 2020, 8:56 PM

#

whos asking???

cold storm Apr 21, 2020, 8:56 PM

#

should be easier now that blender is all 3.3+ calls

#

What restrictions does GPL add for you? (In practice)

#

@potent ice was asking*

#

you can't hit PS5 or Xbox15 or whatver atm

#

but I think switch allows GPL

#

so really it only keeps you off iphones (garbage) and consoles(at the moment)

#

except switch*

#

there is arch linux versions of blender

potent ice Apr 21, 2020, 9:00 PM

#

The question was for @near wedge.

cold storm Apr 21, 2020, 9:00 PM

#

and the JetsonNano - JetsonXavier etc can run eevee too

#

so that is a new platform opening up

potent ice Apr 21, 2020, 9:00 PM

#

I don't know what those things are

cold storm Apr 21, 2020, 9:00 PM

#

https://developer.nvidia.com/embedded/jetson-xavier-nx

NVIDIA Developer

Jetson Xavier NX

Jetson Xavier NX delivers up to 21 TOPS for running modern AI workloads, consumes as little as 10 watts of power, and has a compact form factor smaller than a credit card. It can run modern neural networks in parallel and process data from multiple high-resolution sensors, ope...

#

low power- high power chips for mobile

#

like uber targa chips with tensor cores

near wedge Apr 21, 2020, 9:01 PM

#

@potent ice All my code is usually open source anyways, so in practice not a ton. However, I dislike a library/framework/engine forcing a license on me.

potent ice Apr 21, 2020, 9:02 PM

#

ah right, so you'd rather see BSD / MIT or something

near wedge Apr 21, 2020, 9:02 PM

#

Yup.

potent ice Apr 21, 2020, 9:02 PM

#

That is a hard call for projects like blender engine

limber jewel Apr 21, 2020, 9:03 PM

#

Algum BR?

near wedge Apr 21, 2020, 9:05 PM

#

@potent ice Yeah, it makes a ton of sense for Blender to be GPL, but that, unfortunately makes the BGE/UPBGE GPL as well, and the license will not change (not sure that it should either).

potent ice Apr 21, 2020, 9:06 PM

#

ah, I see.

#

I use MIT mainly for my projects as well

cold storm Apr 21, 2020, 9:11 PM

#

now that I have my pathfinding finished I can assemble a level

potent ice Apr 21, 2020, 9:26 PM

#

@cold storm You should make some very basic tutorials. Maybe the best way to get people to the project. No need to show off anything fancy early on and explain properly the terminology and names of things like EEVEE because few people know what it even is.

cold storm Apr 21, 2020, 9:39 PM

#

yeah 😄

echo olive Apr 22, 2020, 1:58 AM

#

any 1 ever played a runescape private server ?

potent ice Apr 22, 2020, 2:01 AM

#

How is this relevant to game development? 😄

ember dew Apr 22, 2020, 8:04 AM

#

Who has heard of the Game BombSquad?

dawn quiver Apr 22, 2020, 8:12 AM

#

I have @ember dew

tulip tinsel Apr 22, 2020, 7:48 PM

#

i'm having some difficulty using arcade.View could anyone explain what it is and how to use it with my class which inherits from arcade.Window?

tulip tulip Apr 22, 2020, 11:09 PM

#

Hey guys I have a threading question:
First off let me say I am new to Python so please keep that in mind.
I have a method call that needs to happen every x seconds but it needs to be suspended if a specific condition is fulfilled.
In detail I am programming Tetris and I have this call
piece = piece.gravity(Tetris)
which needs to happen every half second or unless I press "s".
Obviously the code I have now does not work as intended because I cannot move/rotate whilst it sleeps.
while True:
if Tetris.Input.get_key() == "w":
piece.rotate(Tetris)
Tetris.Input.reset_key()

    if Tetris.Input.get_key() == "a" or Tetris.Input.get_key() == "d":
        piece.move(Tetris.Input.get_key(), Tetris)
        Tetris.Input.reset_key()

    while Tetris.Input.get_key() == "s":
        piece = piece.gravity(Tetris)
        Tetris.Input.reset_key()
        time.sleep(0.15)

    piece = piece.gravity(Tetris)
    time.sleep(0.5)

Any help is appreciated!

#

the while true on top is just for testing purposes but the way it works is that there is a Input thread running that checks what key was last pressed now when a Tetris block falls I want to be able to turn it while it is still on the same level but after .5 seconds it should fall down once
now right now I press a button it turns and then immediately drops down and so on - if I had a thread which I dont know how to do - I could have the inputs react to the key presses and after every .5 seconds the block would fall no matter what

#

also the return value of the gravity method is vital and since I never did anything with threads I dont know how to realize this correctly

tulip tinsel Apr 23, 2020, 12:13 AM

#

Does anyone have any tips for how to organize my game, because right now there is only one python file
and nothing inherits from anything except for the built in arcade classes

dawn quiver Apr 23, 2020, 4:45 AM

#

@tulip tinsel for example in my Space Invaders game, I have a seperate file for the ship, alien, bullet, and settings. This could be an example of refactoring the code

#

if you have different objects that were created in the one file, try creating seperate files for each object

safe olive Apr 23, 2020, 1:20 PM

#

hello

#

if keys[pygame.K_LEFT] and x > vel:
x -= vel

#

i dont understand how this works

#

x = 50
y = 425
width = 40
height = 60
vel = 5 are the variables

#

the guy explaining the video didnt really explain it well

clever turtle Apr 23, 2020, 1:25 PM

#

hello

#

my program doesnt work and they said Yes, the error is due to how it's handling the thread

#

and that i should ask here

#

import tkinter
import random
import time
import winsound
import threading
canvas = tkinter.Canvas(width=1300 , height=750,bg="#005ce6")
canvas.pack()
def triangle(canvas):
    print("hello world")
    x,y=950,-1
    l=canvas.create_polygon(x,y,x-40,y-40,x+40,y-40,fill="red")
    for i in range(100):
        canvas.move(l,0,2)
        canvas.update()
        canvas.after(5)
def o():
    pass
def l():
    pass
first=[triangle,o,l]
#triangle()
#hlupak=[]
t=threading.Thread(target=first[0], args=(canvas))
t.start()

#

it should create a triangle that moves down

solemn reef Apr 23, 2020, 3:16 PM

#

Hello,
We're making a lottery game and we have live people in a room.
What is the best approach on how to sync the time across all players so they get the new balls rolled at the same time?

brittle grove Apr 23, 2020, 5:42 PM

#

Is kivy

#

Good for making android gamea ??

#

thinkmon

spring fractal Apr 23, 2020, 8:21 PM

#

@solemn reef
https://medium.com/@qingweilim/how-do-multiplayer-games-sync-their-state-part-1-ab72d6a54043

Medium

How do multiplayer games sync their state? Part 1

The problem with multiplayer games

solemn reef Apr 23, 2020, 8:22 PM

#

@spring fractal thanks! I'll take a look

dusk bronze Apr 23, 2020, 9:06 PM

#

need pygame help on #help-coconut

thorny salmon Apr 23, 2020, 9:37 PM

#

I think more apps

dawn quiver Apr 24, 2020, 3:13 AM

#

hi

tulip tinsel Apr 24, 2020, 4:33 AM

#

posted a problem I have in #693133279674630264 if any thinks they know

hearty root Apr 24, 2020, 4:22 PM

#

.

fast cobalt Apr 24, 2020, 7:04 PM

#

in pygame, is there anyway to utilize spritesheets?

torpid pilot Apr 24, 2020, 8:41 PM

#

I'm looking into making a video game as a beginner. I was suggested Arcade. Any detailed advice?

round obsidian Apr 24, 2020, 8:46 PM

#

@torpid pilot The Arcade site has tutorials on making basic games, so you can start with one of those

#

https://arcade.academy/examples/index.html

#

They also have their own discord

torpid pilot Apr 24, 2020, 8:49 PM

#

ok

iron galleon Apr 24, 2020, 11:43 PM

#

https://discord.gg/5jHm4e9

dawn quiver Apr 25, 2020, 12:41 AM

#

anyone know any good books about coding video games with python?

#

I wanna learn how to code games

round obsidian Apr 25, 2020, 1:25 AM

#

@dawn quiver Look into Arcade's tutorials, as linked above

frozen knoll Apr 25, 2020, 1:58 AM

#

Https://learn.arcade.games

#

Or

#

Http://programarcadegames.com

sturdy needle Apr 26, 2020, 11:56 AM

#

Hi guys, can you fill out this form for me?
https://docs.google.com/forms/d/e/1FAIpQLSd_91_Z6vNkRTnKfCmD8J_hiHDDCbquLBpzyqW2ufO34B-m8w/viewform

Google Docs

Video game preferences survey

This survey addresses the gamers.

icy scaffold Apr 26, 2020, 6:54 PM

#

Are any of you familiar with pygame?

tawny stratus Apr 26, 2020, 7:07 PM

#

People here probably will be - your best bet is to just ask your question

dawn quiver Apr 26, 2020, 9:13 PM

#

Any recommendations on good video tutorials for PyGame?

potent ice Apr 26, 2020, 11:00 PM

#

There's so much out there if you look

#

Just make sure you pick pygame for the right reasons

#

The selection of the game library depends heavily on what you want to do.

fierce wraith Apr 27, 2020, 12:36 AM

#

im doing some simple world generation, but you notice when the player moves to un-generated terrain, other than multiprocessing, are there any alternatives?

potent ice Apr 27, 2020, 3:50 AM

#

Think that's the simplest at least.

west mortar Apr 27, 2020, 7:04 AM

#

Hello, Im trying to make a bouncy ball simulator but it says invalid syntax line 1 and I cant find the issue

import turtle
import random 
wn = turtle.Screen()
wn.bgcolor("Black")
wn.title("Bouncyball")
wn.tracer(0)

ball=turtle.Turtle()
ball.shape("circle")
ball.color("Green")
ball.penup()
ball.speed(0)
ball.goto(0, 200)
ball.dy = -2
ball.dx = 2

gravity = 0.1

while True:
    ball.dy -= gravity
    ball.sety(ball.ycor() + ball.dy)

    ball.setx(ball.xcor() + ball.dx)
    # Check for a wall collision
    if ball.xcor() > 300:
        ball.dx *= -1
    
    if ball.xcor() < -300:
        ball.dx *= -1
    
    # Check  for a bounce
    if ball.ycor() < -300:
        ball.dy *= -1

west mortar Apr 27, 2020, 8:07 AM

#

how do I convert python into executable?

#

im getting an error during conversion

supple fog Apr 27, 2020, 8:19 AM

#

Is Godot's GDScipt a python language or a language on its own?

fervent rose Apr 27, 2020, 8:44 AM

#

A language on its own

foggy python Apr 27, 2020, 1:23 PM

#

@west mortar are you using PyInstaller?

dreamy swan Apr 27, 2020, 2:40 PM

#

GDScript is a language of it's own that has parts of multiple languages, including Python, the C languages, and a bit of Java

west mortar Apr 27, 2020, 2:59 PM

#

Wut

dreamy swan Apr 27, 2020, 3:21 PM

#

I personally call GDScript a mutant child of multiple languages

fast cobalt Apr 27, 2020, 4:14 PM

#

pyinstaller turns python scripts into exe files

dim bolt Apr 27, 2020, 7:19 PM

#

Fellas, i need some help. making a top down 2d game where i want to move the player with arrow keys, shoot with space and aim with mouse. Ive got movement mechanics, hitboxes, bullet and stuff working but i cant get the mouse to work. Got it so far that when i move the mouse, i follows in on about a 90 degree angle and then stops until i move it infront of the character again. Also when i try to use it with py self.rect = self.image.get_rect(center = pos) it says TypeError: invalid rect assignment but not in the demo that i got working, Can provide the full code but im just trying to figure out whats wrong

#

Would be kind of yall to point me in the right direction 😄
here is the full player class code:

class Player(pg.sprite.Sprite):
    def __init__(self, pos, x, y ):
        super().__init__()
        self.image = pg.Surface([56, 79])
        self.image = pg.image.load("png\chartest2.png")
        self.orig_image = self.image
        self.rect = self.image.get_rect()
        self.rect.y = y
        self.rect.x = x
        self.change_x = 0
        self.change_y = 0
        self.walls = None
        self.pos = Vector2(pos)
    def changespeed(self, x, y):
        self.change_x += x
        self.change_y += y
    def update(self):
        self.rotate()
        self.rect.x += self.change_x
        block_hit_list = pg.sprite.spritecollide(self, self.walls, False)
        for block in block_hit_list:
            if self.change_x > 0:
                self.rect.right = block.rect.left
            else:
                self.rect.left = block.rect.right
        self.rect.y += self.change_y
        block_hit_list = pg.sprite.spritecollide(self, self.walls, False)
        for block in block_hit_list:
            if self.change_y > 0:
                self.rect.bottom = block.rect.top
            else:
                self.rect.top = block.rect.bottom
    def rotate(self):
        direction = pg.mouse.get_pos() - self.pos
        radius, angle = direction.as_polar()
        self.image = pg.transform.rotate(self.orig_image, -angle)
        # Create a new rect with the center of the old rect.
        self.rect = self.image.get_rect(center=self.rect.center)
    def shoot(self):
        bullet = Bullet(self.rect.centerx +30 , self.rect.bottom -53) #where it comes out
        all_sprite_list.add(bullet)
        bullets.add(bullet)

#

update - used self.rect = self.image.get_rect(centerx = pos) and its working without errors but the fact that it wont follow full 360degrees but 90degrees still remains

dim bolt Apr 27, 2020, 9:42 PM

#

found out where one error was. player = Player((640, 360),640, 360 ) but where is (640, 360) is the center of map and when i move around and try to make it point the mouse cursor, it will only point in reference to the middle so i have to find a way to get players coordinates constantly and feed them into that slot?

crystal bolt Apr 27, 2020, 11:27 PM

#

So firstly, I'm not entirely sure if this is supposed to be here, please help me out if it's not, otherwise I'd love any response I get.

Hallo everybody, so firstly, I'm not at all a programmer yet, I recently started teaching myself Python, and I've played games practically my hole life, 1 game in particular is Terraria, love pixel art games, ect.

But I also just out of curiosity I started checking out how games are made, like indie games, and there are 2 engines being use, Unity and Unreal.
But obviously you have to write "scripts" and all that for a certain something to do something else.
I'm just curious wich language is either most used, or best to use when it comes to working with gaming and game engines?

Alot of video's I've watch about programming is that they say if you'd like to start programming, just take a language and start, so I started with Python, but is it a valid programming for game development?

So what I'm trying to get at is:
Unreal or Unity, or both?
Wich language is best suited for game development?
Is python by any chance a valid language for game development/programming?

Again, if this message don't belong here, please tell me, other then that, thanks to any responses.

iron galleon Apr 27, 2020, 11:31 PM

#

yes, python is suited for game development. we had a game jam with python that just ended yesterday!

there are other languages more suited for the job though, such as c#/c++. c# for unity and c++ for UE4 (or blueprints). however, python is just fine for many 2d games. arcade and pygame are 2 popular python game frameworks

near wedge Apr 27, 2020, 11:33 PM

#

There are also 3D game frameworks for Python (e.g., Panda3D).

iron galleon Apr 27, 2020, 11:35 PM

#

yes it’s pretty great, but unity/unreal would give you a much better experience and better performance

dim bolt Apr 27, 2020, 11:35 PM

#

As i recall, you can only call out python from c# using IronPython in unity and that is pointless since you have to use their scripting API anyway. At least thats what i remember from my 4 weeks of unity. Feel free to correct me

iron galleon Apr 27, 2020, 11:35 PM

#

i personally wouldn’t go into 3d game dev with python

near wedge Apr 27, 2020, 11:38 PM

#

For anyone wanting to get into gamedev without regard for the language, I would just recommend Unity. There are tons of tutorials to get going with and the community is huge.

#

It's probably also a bit easier to grok than Unreal.

iron galleon Apr 27, 2020, 11:38 PM

#

agreed

#

here are some great python games https://dafluffypotato.com/projects

DaFluffyPotato

game developer, pixel artist, tutorialist, and computer science enthusiast developing games since 2013

#

here’s the game my team and i made for the recent game jam 😉 https://www.github.com/Den4200/game-jam-2020

dim bolt Apr 27, 2020, 11:40 PM

#

imma try that one out

potent ice Apr 27, 2020, 11:41 PM

#

Lots of games from the jam in the main repo

#

https://github.com/python-discord/game-jam-2020

GitHub

python-discord/game-jam-2020

All the submissions for our annual Game Jam event for 2020 - python-discord/game-jam-2020

#

Just remember these are games made in about a week 😄

iron galleon Apr 27, 2020, 11:43 PM

#

also that, haha

crystal bolt Apr 27, 2020, 11:48 PM

#

@iron galleon, thank you, I personally don't know much about Pygame and well, frameworks in general, I'm totally new to programming, lol.
But thanks for the response. 😄
Also thanks for the links, will check them out!

@near wedge, Unity just looks visually appealing, thanks for your response to.
Personally, never heard of panda3D, but I think it would be beter with Unity, sins it has a use community and alot of video's. 😁

@dim bolt ,personally, I struggle to understand "... can only call out Pyhton from C# using Ironpython..." and thinks like API, but thanks for the response. 😅

Other then that, thanks again for the response, I'ma head of to bed, sins it's almost 2am, have a nice day/night everyone.

iron galleon Apr 27, 2020, 11:49 PM

#

goodnight!

tranquil girder Apr 28, 2020, 7:07 AM

#

In my eight year experience, Unity will give you a much worse experience than using panda3d and Python. Sure, you have to do more yourself, but at least you have control of your pipeline.

old bane Apr 28, 2020, 11:28 AM

#

Would you guys have a class for a creature, that contains their stats, inventory and abilities (such as attack/sleep/hide) that grabs all that stuff from a DB, or have all of those functions in the SQLAlchemy class itself?

I can see both approaches work, the first one also assumes everything is in memory at all times, and only saves/loades ever N minute or on a manual save/load. While the other approach interacts with the DB at all times

#

Actually writing the question out helped a lot in how I should approach this 😂

hasty cargo Apr 28, 2020, 12:15 PM

#

Hello guys, I have created a little game : https://youtu.be/vUnRtEVLQDM
What do you Think ?

YouTube

daniel unknow

Example de jeu avec pygame

le code est ici:
https://github.com/dani75i/GamePlane

▶ Play video

gleaming estuary Apr 28, 2020, 1:42 PM

#

here was a space demo I had going in python pyopengl

📎 spaceeeee.jpg

#

Python can manage 3D relatively well, but the C bindings needed to call gl are pretty slow considering the frametime you need for 60fps (16ms per frame).

#

that was also legacy ff stuff

#

not glbegin/end legacy, but close 😄

#

another one I recently abandoned 😄

📎 bunnehsim.png

#

that one I might finish if I have the time. functionally it all worked (it was a bunny sim) but I didn't really know gameplay loop wise what to do with it

#

it started in pygame, but eh, I had trouble maintaining consistent performance with enough units on the screen, I know generally the strategy is to only update dirty rects to avoid blitting the entire backbuffer each frame, but with enough units hopping around, the ability for the player to zoom in, the entire backbuffer got updated each frame no matter what :p So I ported to pyopengl which allowed me to have a dynamic directional light for a time of day system w/ normal maps and shaders. "Next gen 2d" kinda stuff

hasty cargo Apr 28, 2020, 3:51 PM

#

What is the best framework to develop games with Python ?

near wedge Apr 28, 2020, 4:20 PM

#

@hasty cargo The one that meets your needs. In other words, you'll need to be more specific.

#

@hasty cargo Copying a previous reply of mine to a similar question: That will depend on your goals. At the very least you'll want to decide between 2d and 3d, and then, from there, figure out how much you expect the engine to handle for you. In general, I would likely go for Arcade for higher-level 2D and Panda3D (or the higher-level Ursina, which is built on top of Panda3D) for 3D. If you want to get more in the guts of graphics rendering, then maybe something like pyglet or moderngl would be better.

#

Oh, and there's also Kivy for 2D.

hasty cargo Apr 28, 2020, 4:39 PM

#

Ok thx for your answer @near wedge

icy scaffold Apr 28, 2020, 7:04 PM

#

Hello, could anybody help me real quick in creating a camera to follow my pygame character. Ive spent hours on end trying to create one (that fits to my code) but it just isnt working, causing me to feel demotivated. It would be deeply appreciated if anybody could help me!!!

#

If anybody had the time to help me I would be really grateful!

frozen knoll Apr 28, 2020, 7:06 PM

#

I've got an example here:

#

http://programarcadegames.com/python_examples/f.php?file=platform_scroller.py

#

But I don't really do pygame much anymore, so I don't really have an example beyond that.

#

It is a bit easier in Arcade.

icy scaffold Apr 28, 2020, 7:07 PM

#

Ah alright, thanks ill have a look into it!

#

What made you switch?

dreamy swan Apr 28, 2020, 8:21 PM

#

he created it...

young dome Apr 28, 2020, 8:41 PM

#

It's wild having the author hanging out here

hasty cargo Apr 28, 2020, 8:46 PM

#

Hello guys, I M actually developping a game with pygame. I have an issue when I try to remove the image background with the method convert_alpha().
I tried something like that :
Image = pygame.image.load(myimage).concert_alpha().
Screen.blit(Image, (0, 0))

The background is still Here
Can someone can help me ?

dreamy swan Apr 28, 2020, 8:47 PM

#

did you copy paste that from your code?
Because there is a typo

hasty cargo Apr 28, 2020, 8:50 PM

#

No, I write here

thorny salmon Apr 28, 2020, 9:01 PM

#

im back

#

so how do we create minecraft 2

merry echo Apr 28, 2020, 9:33 PM

#

we don't
minecraft can never have a sequel

#

but if you want 3d graphics there's panda3d, opengl, ogre,any many more.
or if you're a madman, you could create your own 3d engine

fervent rose Apr 29, 2020, 7:52 AM

#

Making a pseudo custom engine for a game like minecraft wouldn’t be that hard, as minecraft is plane cubes, so there’s very little vertices, and no displacement

fierce wraith Apr 29, 2020, 8:41 AM

#

pseudo engine?

fervent rose Apr 29, 2020, 8:41 AM

#

I mean, if you still use some libraries, like for gl bindings and physics

#

So it is custom, but not really

fierce wraith Apr 29, 2020, 8:42 AM

#

but you cant go lower level than opengl

#

i guess if you use a opengl wrapper like arcade or pygame its not as custom but id say it still counts

fervent rose Apr 29, 2020, 8:43 AM

#

I was thinking something more extreme like modernGl, let’s go wild haha

fierce wraith Apr 29, 2020, 8:43 AM

#

yeah but moderngl isnt really a wrapper for opengl. its just bindings

#

it doesnt have things like "draw a sprite" etc

fervent rose Apr 29, 2020, 8:45 AM

#

That’s my whole point, aking something from scratch wouldn’t be that hard, and probably be a better way

fierce wraith Apr 29, 2020, 8:46 AM

#

yeah i agree

potent ice Apr 29, 2020, 12:26 PM

#

Definitely. The biggest challenge I think is having efficient chunk management / updates.

#

If they are fast enough to update and the buffer data is as small as possible you can draw a lot more chunks at a lower cost

#

Because of collision you also need the data on the client/python

#

It's totally doable in python

fervent rose Apr 29, 2020, 12:53 PM

#

MC actually divide the game by 16x16x16 rendering chuncks (not logical, they are 16x16x256) to only render what is seen by the camera

#

But I think that even without that the game would run really smoothly on modern computers

#

Cubes are just 8 vertices and 16 trigs afterall

icy scaffold Apr 29, 2020, 7:27 PM

#

@hasty cargo is the S in screen capital?

#

for your screen variable

strange belfry Apr 29, 2020, 8:28 PM

#

Does anyone stream on twitch?

potent ice Apr 30, 2020, 7:23 AM

#

@fervent rose Nice. I didn't know they did 16x16x16 for rendering, but that makes a lot of sense.

#

I guess they might also separate blocks and objects?

fervent rose Apr 30, 2020, 7:26 AM

#

Objects with logic are tile entities, which are loaded with logical chucks, is that what you mean?

potent ice Apr 30, 2020, 7:26 AM

#

torches

fervent rose Apr 30, 2020, 7:27 AM

#

They are actual blocks iirc

#

It just has a separate model and a metadata for the light

potent ice Apr 30, 2020, 7:29 AM

#

ah ok, so they are written to the to the vertex buffer together with the blocks

fervent rose Apr 30, 2020, 7:30 AM

#

I guess so

potent ice Apr 30, 2020, 7:32 AM

#

Doesn't work great with my plan using geometry shader 😄

#

But I guess they can be handled separately

fervent rose Apr 30, 2020, 7:41 AM

#

Haha, I think they didn’t even wrote a shader themselves, they use JLWGL

potent ice Apr 30, 2020, 8:33 AM

#

I so want to start on arcade-voxels 🙂

potent ice Apr 30, 2020, 8:49 AM

#

... but maybe exploring 2d first is a good idea 😛 (I'm mainly done 3d)

#

Doing a 2d rpg with huge tmx maps, items, combat (weapons/spells), sensor volumes, npcs, quests.... might be more appealing.

fervent rose Apr 30, 2020, 9:02 AM

#

I always wanted to do a small 3d rendering engine, but when I think bout displacement, I don't have any freakin idea on how you're supposed to implement this, ND as much as I like maths, I don't have enough knowledge to understand Wikipedia pages haha

#

I always feel like that 2d games made by one person can be a really "finished" game, as 3d games will tend to lack content and details

jovial fable Apr 30, 2020, 11:17 AM

#

There is a revival of small 3D game that have PS1 / Quake style graphics in Indy community i observed

#

I guess 3D has either become less costly to make or it's just kids that grown up during the late 90's start to make game now

#

Lacking detail can be a style i would say

#

https://en.m.wikipedia.org/wiki/Paratopic

Paratopic

Paratopic is a first-person, horror video game by Jessica Harvey, Chris I. Brown, and Doc Burford released for Linux, macOS, and Windows platforms in March 2018. The game uses a graphical style reminiscent of 32-bit era graphics. Later that year, a "Definitive Cut" edition add...

#

Like this for exemple

fierce wraith Apr 30, 2020, 12:22 PM

#

i looove doing the math behind algos. especially if its a really smart trick. but i absolutely hate it when the only resources are on the finished product and i cant figure out how they got there.

fervent rose Apr 30, 2020, 12:23 PM

#

That’s the kind of maths I like too, but I just can’t keep up :(

solemn wagon Apr 30, 2020, 5:09 PM

#

I made a simple command-line blackjack program and want to add a GUI, but I don't know which library to choose. Pygame, tkinter, qt?

tulip tinsel Apr 30, 2020, 5:30 PM

#

What would be the more efficient way to do this:

    def on_mouse_motion(self, x: float, y: float, dx: float, dy: float):
        column, row = self.get_column_and_row_from_mouse_coords(x, y)

        current_cell = self.grid[COLUMN_COUNT * row + column]
        current_cell.color = self.current_color

        for cell in self.grid:
            if cell.left <= x <= cell.right and cell.bottom <= y <= cell.top:
                cell.color = self.current_color
            else:
                cell.color = BLANK

Because this is obviously really slow and laggy :D

fervent rose Apr 30, 2020, 6:13 PM

#

At this point, you would be better using an in-memory SQLite database

#

Or you could make a better implementation using double logarithmic search

icy scaffold Apr 30, 2020, 6:24 PM

#

Hello, Could anybody help me make some projectiles that shoot out of a characters body/coordinates in pygame? Ive tried youtube but that doesnt seem to be helping much. The help would be much appreciated

frozen knoll Apr 30, 2020, 6:24 PM

#

http://programarcadegames.com/python_examples/f.php?file=bullets.py

#

or

#

http://programarcadegames.com/python_examples/f.php?file=bullets_aimed.py

#

I don't have a lot of help beyond that though, as I mostly just do Arcade now.

icy scaffold Apr 30, 2020, 6:27 PM

#

Thanks, Ill have a look at it

#

Cant seem to make much of it, does anybody else have any suggestions?

wicked swift Apr 30, 2020, 7:38 PM

#

Hey, guys by any chance do you have any tips for me I'm only a beginner.

frozen knoll Apr 30, 2020, 8:02 PM

#

Start with https://learn.arcade.academy maybe? There's a lot of other good books and tutorials. Pick one work through it.

potent ice Apr 30, 2020, 8:26 PM

#

yup. Start simple. What you learn using the higher level libraries can be used when/if you move to a lower level one

#

It causes less suffering in general 😄

dawn quiver May 1, 2020, 4:33 AM

#

What are some python game engines?

potent ice May 1, 2020, 5:15 AM

#

Depends what you want to make and if you want it to be low or high level

near wedge May 1, 2020, 5:44 AM

#

@dawn quiver The channel topic has a few

manic surge May 1, 2020, 5:32 PM

#

I'm having trouble getting python to locate pysdl2 for some reason. I installed it with pip and tried setting the environment variable but it can't find it still. Any advice on what to check? I never had this happen with pysfml or pyglet

foggy python May 1, 2020, 5:41 PM

#

Might as well use Pygame 2. It’s SDL2 with more development behind it and a larger community

manic surge May 1, 2020, 5:53 PM

#

I've heard mixed things about pygame though

undone anvil May 1, 2020, 9:43 PM

#

what is the best python game engine ?

dawn quiver May 1, 2020, 11:49 PM

#

love2d

potent ice May 2, 2020, 12:12 AM

#

There is no "best" game engine. It depends on what you want to make and at what level.

#

Should totally do what Paul suggested making a python game engine called "The best game engine"

small flare May 2, 2020, 3:08 AM

#

After hacking together the second semi optional solution to this issue i thought id ask for some help:
Im building a turn based combat simulation for my pen & paper game. (if anyone has done something similiar, it would be great of you too dm me if youre willing to share some experiences and roadblocks)
What is the best practise for storing and processing abilities that players can use, in a database ?
My old solution had different ability types like healing and damaging, which then resulted in different python classes that inherited from "ability".
My problem is that there are abilitys that have such a high varience of effects that it's hard to save them with properties that i can later run through my game engine. Most games deal with this problem flawlessly and i dont quite get how. (Not usually a game developer here)
Most spell have some same properties, (mana cost, learning requirements, cooldown, name, etc.) but then look at 4 abilitys:
Heal: - heal amount, attribute scaling, range, target amount
Fire ball: damage, attribute scaling, damage type, radius of impact, chance of inflicting a status effect
Teleport: range for initial target, range for teleportation position, max weight for target
Bla bla buff: effect type, chance of inflicting a status effect, target amount, values of the effect type

I also tried just smashing all possible attributes inside one model and then just extracting the columns i needed , depending on the skill category but then i ended up with a lot of columns for very specific spells and situations.
I hope i explained my problem good enough :')
(@me)

inner obsidian May 2, 2020, 8:53 AM

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hello everybody, i was programming the society game mastermind, anyone want to try ?

stable lodge May 2, 2020, 1:53 PM

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@inner obsidian #303934982764625920 is more the place for that comment. Make sure you follow the requirements of the channel shown in channel description

foggy python May 3, 2020, 2:42 AM

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made water and grass stuffs

📎 gif_11.gif

potent ice May 3, 2020, 2:46 AM

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Nicely done

tulip tinsel May 3, 2020, 4:12 AM

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Posted in #help-chocolate if Anyone thinks they might know how to use threading with arcade

undone anvil May 3, 2020, 7:51 AM

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Should I learn c++ to do game dev and use it in unreal engine or use it only by code ?

potent ice May 3, 2020, 7:54 AM

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That depends on many things

foggy python May 3, 2020, 12:36 PM

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If you want to do 3D, you’ll probably want to use an engine. If you want to do stuff that requires a lot of processing power, you may want to use an engine or another language. Everything else should be fine with Python.

pliant dust May 3, 2020, 4:14 PM

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I am new to coding, and apologize if this is the wrong place for this, and got into it because I am interested in game development. I have been using Pygame to learn to game. However, I am struggling to find out how to get a single key input to run an entire command after one press. I have tried the KEYDOWN and KEYUP event.types to fix this, but it still only runs a portion of the animation before stopping, or everything else(movement, jumping, etc) stops entirely. Is there something I should be doing differently than just telling the KEYDOWN to run the animation?

foggy python May 3, 2020, 4:33 PM

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that doesn't sound like an issue with input

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it sounds like something is wrong with your animation system

pliant dust May 3, 2020, 4:46 PM

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I coded it as follows the first time I tried.

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event.key == K_k: player_action,player_frame = change_action(-some code- 'attack')

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and then the animation may have played the first frame after a key press, and reset to idle.

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update: I fixed the non-playing with a True statement and making the idle animation "elif" to the attack animation. Now its that the key must still be held down to play the animation

potent ice May 3, 2020, 6:29 PM

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3D can work more that fine in python. It depends how complex you need it do be

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If relatively simple stuff it's not that hard to get simple 3D geometry up and running without an "engine" even with pyglet or moderngl.

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But there are also panda3d/ursina if you want higher level api

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Very few people explore 3D with python it seems. It's a bit of a shame 😉

foggy python May 3, 2020, 8:45 PM

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@pliant dust wait, are you using my tutorial? lol

pliant dust May 3, 2020, 8:45 PM

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I questioned the name for a moment...

foggy python May 3, 2020, 8:46 PM

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but yeah, looks like you just had an issue with setting up flags and stuff to keep track of what animation should be playing

pliant dust May 3, 2020, 8:47 PM

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I figured it was that the while loop was running back to the running/idle animation before the attack animation finished/started.

modest fulcrum May 3, 2020, 9:42 PM

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Hi, are there any specific requirements or guidelines one should follow when making 2D images to use as sprite with PyGame?

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I'm a bit new to PyGame, but I'm asking because of my understanding of how Rect works

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It's based on the original image initially, so if I have a bunch of transparent space around my image, will that be an issue? I figure not as long as the transparent space is roughly the same on all sides.

frozen knoll May 3, 2020, 10:43 PM

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My recollection is that basic collision detection includes transparency, so I always advised students to trim it. Bitmasking is totally different thing.

modest fulcrum May 4, 2020, 1:19 AM

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But we can work around the extra space, can we not?

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We can set trim the transparent space or not have it included in the rect.

fervent rose May 4, 2020, 6:33 AM

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The issue with the transparent space is that your engine might think it should be counted as collision

pliant dust May 4, 2020, 11:53 AM

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I think, from what I understand, depends a little on how you set up the collision rect for the sprite. If you use a “.get_height/width” of the image to create the rect, then it’ll include the blank space. If you manually input the dimensions it’ll be the right size, but the origin point would probably be off from the sprite.

frozen knoll May 4, 2020, 12:37 PM

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Right, you'll need to dive in and spend some time figuring out collisions. If you rotate or scale a sprite, that's also something to consider. I think the simplest solution is to just trim the rect.

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But that requires a bit of use of a graphics program, and they don't all make that easy.

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This is a common stumbling block for people getting started with python game development, and is one of the reasons Arcade trims out a lot of the transparent space.

fervent rose May 4, 2020, 12:40 PM

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You always want to make your assets as small as possible, for the sake of disk and memory usage, so I think it is a good habit to always trim empty space around your assets

frozen knoll May 4, 2020, 12:41 PM

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If you work with Unity, or OpenGL, standards practice is to have your assets in powers of 2.

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List 32x32 or 64x64 or 128x32.

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Scaling is easier, and the graphics card works better with it apparently.

fervent rose May 4, 2020, 12:42 PM

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Well, I guess that makes sense

fierce wraith May 4, 2020, 1:07 PM

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im pretty sure opengl pads data to be a power of two, so that might be why it works better. dont quote me on this

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😉

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no, it pads to the nearest multiple of 4 iirc

dawn quiver May 4, 2020, 1:14 PM

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I'm doing a game development study and we have to make a 'museum product'. I think I want to do something in python because I want to learn the language but I'm completely out of inspiration. I am looking for ideas on what I could make. It has to be something simple that can be done in a couple of days. I was thinking maybe some image manipulation using pillow that makes a modern 'art work' of an image or something like that.

fierce wraith May 4, 2020, 1:59 PM

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@dawn quiver why not something like this:
https://discordapp.com/channels/267624335836053506/303934982764625920/627437178867286026

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Leads to images like this:
https://discordapp.com/channels/267624335836053506/303934982764625920/626875340739837972

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I found the Mona Lisa one to look pretty cool

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https://imgur.com/a/DU7URD2

Imgur

manic canopy May 4, 2020, 3:53 PM

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How can I make a mobile application or mobile game with Python?

near wedge May 4, 2020, 4:38 PM

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@manic canopy I think Kivy can do this (at least for Android).

frozen knoll May 4, 2020, 5:39 PM

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I'd look at Kivy. Haven't done it myself, but I've heard it works.

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If you want more of an app than a game, might look at https://beeware.org/

pliant dust May 4, 2020, 7:44 PM

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I have a question about attacking, hit boxes, and animations. In a game, is the attack just extending the player/enemies collision box and checking for a hit? or is the attack its own hit box to check collision. on that same note, is the attack "swing" its own sprite, or part of the player animation? is it all based on personal preference?

frozen knoll May 4, 2020, 7:46 PM

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I'd probably do one of two things:

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Change animation and hitbox of the sprite at the same time.

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Check for collisions with extended hitbox.

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Resolve.

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Or, you could just create a mini, invisible sprite that is a small hitbox in the target area and check for contacts.

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That way, only the separate spot would do damage.

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So attacking forward would not cause damage to enemies touching your back.

pliant dust May 4, 2020, 7:49 PM

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ok, thank you!

frozen knoll May 4, 2020, 8:19 PM

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Working on easy Pymunk support in an upcoming Arcade version.

📎 Untitled_Project.mp4

dense topaz May 4, 2020, 8:23 PM

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Wow

dawn quiver May 4, 2020, 8:46 PM

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I'm learning pygame and using sublime text for it but whenver I click run it shows up for like 2 seconds and quits
is there something I add to the bottom like with tkinters tk.mainloop()?

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so

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pygame.init() at the beginning

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and pygame.quit() at the end

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@dawn quiver

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I did

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maybe try running it somewhere else and not in sublime

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I am trying in vs code

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📎 unknown.png

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invalid syntax?

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import pygame
pygame.init()

win = pygame.display.set_mode((900, 550))

pygame.display.set_caption("Puppers")


x = 50
y = 50
width = 40
height = 60
vel = 5

run = True
while run:
    pygame.time.delay(100) #milliseconds, this is 0.1 second.

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False

    pygame.draw.rect(win, (255, 0, 0, (x, y, width, height))
    pygame.display.update()

pygame.quit()

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are you using tech with tim's tutorial?

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yes

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i tried it too and it works for me

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I am learning pygame

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idk why it doesnt work for you

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hm

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what are you usinh

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using

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vscode

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also

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in episode 4 you will get lost spoiler alert

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thats where i quit

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huh lol

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oof

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I am oofed lol

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wait

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let me try last hope

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Spyder

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oof

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I'm starting to wonder if pygame even downloaded properly

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because it is giving me errors on the pygame.quit()

dense marsh May 5, 2020, 1:47 AM

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def draw(): #draws pixels
    mouse_pos = pygame.mouse.get_pos()
    pygame.draw.rect(SCREEN, BLACK, (custom_round(mouse_pos[0]), custom_round(mouse_pos[1]), MARGIN, MARGIN))``` this keeps redrawing rectangles on the screen because its in the for loop but i want it to not redraw and stay on the screen creating multiple rectangles

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how do i do that

dawn quiver May 5, 2020, 1:04 PM

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someone know how to program app that runs on background?

potent ice May 5, 2020, 10:33 PM

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FYI: Pygame 2.0.0.dev8 was just released https://github.com/pygame/pygame/releases/tag/2.0.0.dev8

GitHub

pygame/pygame

pygame (the library) is a Free and Open Source python programming language library for making multimedia applications like games built on top of the excellent SDL library. C, Python, Native, OpenGL...

elder forum May 6, 2020, 5:48 AM

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how do i load and apply textures in python + pygame?

potent ice May 6, 2020, 6:29 AM

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Like sprites?

supple surge May 6, 2020, 6:58 AM

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basically

merry echo May 6, 2020, 7:15 AM

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Anyone here interested in collision detection? I came across a very interesing paper which uses Verlet Integration. The example code is in C++ but shouldn't be a problem.
https://www.cs.cmu.edu/afs/cs/academic/class/15462-s13/www/lec_slides/Jakobsen.pdf

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Here's a similar tutorial which has interactive pieces
http://datagenetics.com/blog/july22018/index.html

mild helm May 6, 2020, 7:54 AM

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Does anyone know pygame? I have to do my homework but I don't know how to do it😕, if someone is kind enough to help me would be very grateful?

foggy breach May 6, 2020, 8:01 AM

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Hi, I have hopefully a quick one to solve. I'm trying to make a Chip-8 emulator, and part of it involves bit shifting. I have this:

op_code = memory[pc] << 8 | memory[pc + 1]

I'm getting an error that says: TypeError: unsupported operand type(s) for <<: 'bytes' and 'int'
I've tried various things I've read on numerous places online, and nothing is working (casting memory to bin or hex doesn't work, casting the 8 changes it to a string some how, tried wrapping the whole equation inside of hex() or bin(), tried casting memory to int, which caused a different error entirely, i've even reread how shifting is supposed to work, and everything I've read says it should be working already, and I've tried changing the 8 to 1 and 4) memory[pc] should contain hex for the chip 8 code thats stored there. what do I need to do to get this to work?

unique dragon May 6, 2020, 8:16 AM

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The error means that the value at memory[pc] is a byte string, try printing memory to see what it looks like

foggy breach May 6, 2020, 8:22 AM

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I did, I changed how I loaded the file, thank you

mild helm May 6, 2020, 9:28 AM

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Help me?

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Does anyone know pygame? I have to do my homework but I don't know how to do itconfused, if someone is kind enough to help me would be very grateful?

merry echo May 6, 2020, 10:24 AM

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!ask

frank fieldBOT May 6, 2020, 10:24 AM

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Asking good questions will yield a much higher chance of a quick response:

• Don't ask to ask your question, just go ahead and tell us your problem.
• Don't ask if anyone is knowledgeable in some area, filtering serves no purpose.
• Try to solve the problem on your own first, we're not going to write code for you.
• Show us the code you've tried and any errors or unexpected results it's giving.
• Be patient while we're helping you.

You can find a much more detailed explanation on our website.

mild helm May 6, 2020, 11:27 AM

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Help me

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I try solve problem 100 times