🔒 jumping in a street fighter style game | Python | Page 1

raven doveBOT Jul 21, 2024, 6:45 PM

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@rough pagoda

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rough pagoda Jul 21, 2024, 6:46 PM

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im trying to make my character jump and come back down in my game, i have 6 or 7 sprites for the jump ready as well but im not sure how to create this

olive meadow Jul 21, 2024, 6:56 PM

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Do you know how gravity works in real life

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Like with acceleration/velocity

rough pagoda Jul 21, 2024, 6:57 PM

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https://paste.pythondiscord.com/KW5Q

rough pagoda Jul 21, 2024, 6:57 PM

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olive meadow Do you know how gravity works in real life

Yes

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Do I model it the same way?

olive meadow Jul 21, 2024, 7:05 PM

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You have a constant acceleration

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When they jump you give them a certain upward speed

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And decrease that by the acceleration each frame

rough pagoda Jul 21, 2024, 7:08 PM

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Ok thank you I’ll give it a go

olive meadow Jul 21, 2024, 7:09 PM

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Yeah good luck you can always ask about it more as you go

rough pagoda Jul 21, 2024, 7:10 PM

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Ok thanks will do

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What do you think a reasonable constant acceleration should be?

olive meadow Jul 21, 2024, 7:13 PM

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Something pretty small

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Bc it happens every frame

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What’s the frame rate of your game

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Maybe like .02?

rough pagoda Jul 21, 2024, 7:16 PM

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olive meadow What’s the frame rate of your game

I’ve got it as 36

olive meadow Jul 21, 2024, 7:24 PM

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Getting anything to work?

rough pagoda Jul 21, 2024, 7:34 PM

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No i have no idea😭

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How can I decrease it in each frame?

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Do I use a for loop?

mossy plume Jul 21, 2024, 7:42 PM

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# constatnt gravity
G = 0.2
# changeing velocity
velY = 0
# Current y position
y = 0

if jumping:
  velY = 12

# gameLoop
while True:
  y -= velY
  velY -= G
```I'm pretty sure this works. lemme know

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And replace the game loop with your own loop and the if statment with the jump event in your code

rough pagoda Jul 21, 2024, 7:44 PM

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How can I get the animation in there as well?

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I’ve got the sprites in a list

mossy plume Jul 21, 2024, 7:46 PM

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Hold on, lemme think about it for a sec

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What kind of animation?

rough pagoda Jul 21, 2024, 7:47 PM

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So it’s 6 sprites in a list

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Making up the jump

mossy plume Jul 21, 2024, 7:47 PM

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Is it also prepering for a jump?

rough pagoda Jul 21, 2024, 7:47 PM

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Yeah I think the first is

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The bottom ones

mossy plume Jul 21, 2024, 7:48 PM

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Okay, I guess you can

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Like

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use the velocity

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as the number for the list

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index

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Like:```py
animList = [0...6]

if velY > 0:
currentImage = animList[int(velY / 2)]

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I think this should work?

rough pagoda Jul 21, 2024, 7:52 PM

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Can you run this and tell me where I’ve gone wrong please ?

mossy plume Jul 21, 2024, 7:52 PM

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Sure, run what though?

rough pagoda Jul 21, 2024, 7:53 PM

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Wait I’ll send the code

mossy plume Jul 21, 2024, 7:53 PM

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Okay

rough pagoda Jul 21, 2024, 7:54 PM

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https://paste.pythondiscord.com/75UA

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It doesn’t actually drop down

olive meadow Jul 21, 2024, 7:56 PM

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mossy plume ```py # constatnt gravity G = 0.2 # changeing velocity velY = 0 # Current y posi...

Try it’s exactly how you do it yeah

mossy plume Jul 21, 2024, 7:57 PM

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rough pagoda It doesn’t actually drop down

I don't think you are removing from the velocity the constant gravity

mossy plume Jul 21, 2024, 7:57 PM

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olive meadow Try it’s exactly how you do it yeah

Thank you and I'm sorry I barged in

olive meadow Jul 21, 2024, 7:58 PM

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No problem anyone can help and I was busy for a sec

mossy plume Jul 21, 2024, 7:58 PM

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Okay

rough pagoda Jul 21, 2024, 7:59 PM

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I’m removing it in the draw method no?

olive meadow Jul 21, 2024, 7:59 PM

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And yeah I’d pick the sprite based on the velocity

mossy plume Jul 21, 2024, 8:00 PM

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rough pagoda I’m removing it in the draw method no?

Yeah sorry...

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Is there a chance that you are both walking and jumping?

olive meadow Jul 21, 2024, 8:02 PM

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Did you get it to jump without the animation

rough pagoda Jul 21, 2024, 8:02 PM

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mossy plume Is there a chance that you are both walking and jumping?

Don’t think so cause it’s an elif

rough pagoda Jul 21, 2024, 8:02 PM

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olive meadow Did you get it to jump without the animation

No

mossy plume Jul 21, 2024, 8:02 PM

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No, I see it

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I think

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You need to += gravity to velocity instead of -=

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I think

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I'm not sure

rough pagoda Jul 21, 2024, 8:03 PM

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Ohhh

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Makes sense

mossy plume Jul 21, 2024, 8:03 PM

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I don't think it's that though

rough pagoda Jul 21, 2024, 8:03 PM

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Yh no that didn’t change anything

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Maybe i need to change the numbers for the gravity and the other variables?

mossy plume Jul 21, 2024, 8:05 PM

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I dont really, understand?

olive meadow Jul 21, 2024, 8:05 PM

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Lemme see the snippet of the code for the gravity

rough pagoda Jul 21, 2024, 8:06 PM

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One sec

olive meadow Jul 21, 2024, 8:06 PM

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Also try to get it without animation

mossy plume Jul 21, 2024, 8:06 PM

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Excuse me if I'm wrong but you're never setting onGround to true?

rough pagoda Jul 21, 2024, 8:06 PM

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mossy plume Excuse me if I'm wrong but you're never setting onGround to true?

Oh yh😭

mossy plume Jul 21, 2024, 8:07 PM

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That shouldn't change anything though

rough pagoda Jul 21, 2024, 8:07 PM

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Where would that go?

mossy plume Jul 21, 2024, 8:08 PM

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Idk

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You need collision

rough pagoda Jul 21, 2024, 8:08 PM

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With what?

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The like floor level?

mossy plume Jul 21, 2024, 8:08 PM

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Yea Yea

rough pagoda Jul 21, 2024, 8:09 PM

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But need to sort out the gravity bit first I think cause it’s not actually moving down

mossy plume Jul 21, 2024, 8:10 PM

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Yea I guess

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Have you tried decreasing the 12?

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I mean, maybe?

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Wait it doesn't fall at all?

rough pagoda Jul 21, 2024, 8:11 PM

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Nope

olive meadow Jul 21, 2024, 8:11 PM

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First thing I see is you can’t jump while moving left and right

rough pagoda Jul 21, 2024, 8:11 PM

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It just goes up and stays there

olive meadow Jul 21, 2024, 8:11 PM

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Bc of if statements

rough pagoda Jul 21, 2024, 8:11 PM

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Yeah I’ll change that

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Should I put the jump loop at the top?

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Like above the left and right

mossy plume Jul 21, 2024, 8:12 PM

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olive meadow First thing I see is you can’t jump while moving left and right

Dude, that's what I said lol

mossy plume Jul 21, 2024, 8:12 PM

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rough pagoda Like above the left and right

No you should you use multiple if loops

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Instead of elif just if

rough pagoda Jul 21, 2024, 8:13 PM

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Ok cool

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Should the left and right be elifs though?

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Cause you can’t go both left and right no?

mossy plume Jul 21, 2024, 8:14 PM

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Alright, sure

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but if you are adding to x and then subtracting from x it shouldn't matter

rough pagoda Jul 21, 2024, 8:15 PM

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It bugs out when I change any of them to ifs

mossy plume Jul 21, 2024, 8:15 PM

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Oh right okay

rough pagoda Jul 21, 2024, 8:16 PM

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Like the animations don’t disappear and they leave like a trail behind the character

mossy plume Jul 21, 2024, 8:16 PM

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I see

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Than sure use an elif

rough pagoda Jul 21, 2024, 8:17 PM

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Any idea why it’s not going down?

mossy plume Jul 21, 2024, 8:18 PM

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I don't have any, sorry

olive meadow Jul 21, 2024, 8:20 PM

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What’s the issue rn

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First we need to figure out the jumping forget about the animations

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It will be much easier to add them after

rough pagoda Jul 21, 2024, 8:21 PM

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Yeah that’s what we’re trying

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I took the animation part out

olive meadow Jul 21, 2024, 8:21 PM

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What happens when you jump

rough pagoda Jul 21, 2024, 8:22 PM

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The character moves up by like a cm and just stays there

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And just keeps going up when I continue to press it

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There’s no downward movement

mossy plume Jul 21, 2024, 8:24 PM

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i think I got it

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You are cheking something with the x velocity?

rough pagoda Jul 21, 2024, 8:26 PM

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No what should I be checking?

mossy plume Jul 21, 2024, 8:27 PM

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You shouldn't

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but there's an if statement in the beginning of the draw method

rough pagoda Jul 21, 2024, 8:29 PM

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Oh yh that’s meant to be to avoid the player coming off screen but it didn’t really work haha

mossy plume Jul 21, 2024, 8:29 PM

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Lol

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Okay, sorry

rough pagoda Jul 21, 2024, 8:29 PM

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It’s a bit of a mess haha

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Can you help me fix that one first maybe?😭

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Like to avoid the player from moving too far left and too far right

mossy plume Jul 21, 2024, 8:30 PM

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Okay, Are you sure though?

rough pagoda Jul 21, 2024, 8:30 PM

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About what?

mossy plume Jul 21, 2024, 8:30 PM

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That you want to do that first

rough pagoda Jul 21, 2024, 8:31 PM

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Yes I need to do it anyway and it seems easier than the whole jump thing

mossy plume Jul 21, 2024, 8:31 PM

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Okay

rough pagoda Jul 21, 2024, 8:31 PM

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At the moment when I reach the off screen boundary the character just fully disappears

mossy plume Jul 21, 2024, 8:32 PM

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I think it needs a like

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the width of the chracter

rough pagoda Jul 21, 2024, 8:33 PM

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Does that

mossy plume Jul 21, 2024, 8:34 PM

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because you not drawing the chracter

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you need to only prevent from going further

olive meadow Jul 21, 2024, 8:37 PM

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I get off work in 23 minutes i can help a lot more frequently then sorry

mossy plume Jul 21, 2024, 8:37 PM

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Like:```py
def draw(self):
if not self.x-self.vel>=0 or not self.x+self.vel < screenWidth:
velX = 0

mossy plume Jul 21, 2024, 8:38 PM

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olive meadow I get off work in 23 minutes i can help a lot more frequently then sorry

Hold up

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Are you like making sure no one sees you help other people?

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Lol

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And there is a better way of saying that

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Im jjust no good english

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Did you get it?

rough pagoda Jul 21, 2024, 8:41 PM

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It took my character completely off the screen

mossy plume Jul 21, 2024, 8:41 PM

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?

rough pagoda Jul 21, 2024, 8:41 PM

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Wait did you mean like this?

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mossy plume Jul 21, 2024, 8:42 PM

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Not exactly

olive meadow Jul 21, 2024, 8:42 PM

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mossy plume Hold up

Im not really supposed to be on my phone while working

mossy plume Jul 21, 2024, 8:42 PM

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Dude

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You need to remove some white spaces from the code after that

mossy plume Jul 21, 2024, 8:43 PM

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olive meadow Im not really supposed to be on my phone while working

That's funny

rough pagoda Jul 21, 2024, 8:43 PM

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Do I need the ‘ if self.walkCount+1>36 bit

mossy plume Jul 21, 2024, 8:44 PM

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I think

rough pagoda Jul 21, 2024, 8:44 PM

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Should it be indented though?

mossy plume Jul 21, 2024, 8:44 PM

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Wdym by indented

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?

mossy plume Jul 21, 2024, 8:45 PM

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mossy plume I think

Although you could use mod by 36

rough pagoda Jul 21, 2024, 8:45 PM

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mossy plume Wdym by indented

Idk how to explain it😭

mossy plume Jul 21, 2024, 8:45 PM

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Like

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Over white spaced or not over?

rough pagoda Jul 21, 2024, 8:46 PM

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I don’t know what you mean by that

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Wait

mossy plume Jul 21, 2024, 8:46 PM

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Waiting

rough pagoda Jul 21, 2024, 8:47 PM

#

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See how the top if is further left than the rest

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Should it be like that

mossy plume Jul 21, 2024, 8:48 PM

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Yes

mossy plume Jul 21, 2024, 8:48 PM

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rough pagoda

Amoug us

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Im sorry

rough pagoda Jul 21, 2024, 8:50 PM

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So whats wrong with it

mossy plume Jul 21, 2024, 8:50 PM

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Wdym?

rough pagoda Jul 21, 2024, 8:50 PM

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Like why’s it not working

mossy plume Jul 21, 2024, 8:51 PM

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Oh

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Do you mind showing me a video?

rough pagoda Jul 21, 2024, 8:51 PM

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It does that

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Doesn’t show the character at all

mossy plume Jul 21, 2024, 8:51 PM

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Okay

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I mean

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Not okay

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Did you indent it?

rough pagoda Jul 21, 2024, 8:53 PM

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I’ve left it as I showed you

mossy plume Jul 21, 2024, 8:53 PM

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Than it shouldn't work

rough pagoda Jul 21, 2024, 8:54 PM

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Shouldn’t ?

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Bro your confusing me 😭

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What should I be indenting

mossy plume Jul 21, 2024, 8:55 PM

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https://paste.pythondiscord.com/4LJQ

rough pagoda Jul 21, 2024, 8:57 PM

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Now the character gets stuck on the boundary

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Like it prevents him from going over but it freezes him there

mossy plume Jul 21, 2024, 8:57 PM

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Is that not what you wanted?

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Oh okay

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Let me think about it for a sec

rough pagoda Jul 21, 2024, 8:58 PM

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And for some reason the animations for the standing and walking have stopped

mossy plume Jul 21, 2024, 8:58 PM

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Oh sorry,

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My bad

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it should be just X

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x

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small x

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instead of velX

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Could you repaste your code?

rough pagoda Jul 21, 2024, 8:59 PM

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Yeah one sec

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https://paste.pythondiscord.com/JUAA

mossy plume Jul 21, 2024, 9:00 PM

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Does it give you any errors?

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if  not self.x-self.vel>0:
                self.x=1
if not self.x+self.vel<SCREEN_WIDTH:
  self.x = SCREEN_WIDTH

rough pagoda Jul 21, 2024, 9:01 PM

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No but it makes my character freeze on the border

mossy plume Jul 21, 2024, 9:01 PM

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mossy plume ```py if not self.x-self.vel>0: self.x=1 if not self.x+self.vel...

This should work

rough pagoda Jul 21, 2024, 9:01 PM

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mossy plume Does it give you any errors?

And the animations mess up

mossy plume Jul 21, 2024, 9:01 PM

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Okay

rough pagoda Jul 21, 2024, 9:02 PM

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Yes it works on one side now

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But on the right side it doesn’t stop him

mossy plume Jul 21, 2024, 9:03 PM

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That was an overlook on my side

rough pagoda Jul 21, 2024, 9:03 PM

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He just goes through the right side and starts at the left side

mossy plume Jul 21, 2024, 9:03 PM

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mossy plume ```py if not self.x-self.vel>0: self.x=1 if not self.x+self.vel...

I updated the code

olive meadow Jul 21, 2024, 9:04 PM

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Did you guys get the borders figured out

mossy plume Jul 21, 2024, 9:04 PM

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I think so

rough pagoda Jul 21, 2024, 9:07 PM

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The boundary is a bit too far on the right side I’m trying to fix it

mossy plume Jul 21, 2024, 9:08 PM

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Oh right that would be do to the fact that we are subtracting from the total width instead of adding or the other way around I think

olive meadow Jul 21, 2024, 9:11 PM

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Well I can help now so lmk if there’s an issue

rough pagoda Jul 21, 2024, 9:11 PM

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The barriers like off screen

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See

olive meadow Jul 21, 2024, 9:12 PM

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Whats the code for the right barrier

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Should be ScreenWidth - playerwidth

rough pagoda Jul 21, 2024, 9:16 PM

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olive meadow Should be ScreenWidth - playerwidth

I should set x equal to that?

olive meadow Jul 21, 2024, 9:17 PM

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olive meadow Whats the code for the right barrier

^

olive meadow Jul 21, 2024, 9:17 PM

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rough pagoda I should set x equal to that?

Probably

rough pagoda Jul 21, 2024, 9:18 PM

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Ok think ive got it

mossy plume Jul 21, 2024, 9:18 PM

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minus one I think

rough pagoda Jul 21, 2024, 9:18 PM

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I dont know why the animations have gone all weird though

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Ok yh perfect the barriers work

mossy plume Jul 21, 2024, 9:19 PM

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Now jumping?

olive meadow Jul 21, 2024, 9:20 PM

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Oh i bet i know why jumping didnt work

rough pagoda Jul 21, 2024, 9:20 PM

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Not yet cause the animations are still bugging

mossy plume Jul 21, 2024, 9:20 PM

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olive meadow Oh i bet i know why jumping didnt work

O, do feel free to share

mossy plume Jul 21, 2024, 9:21 PM

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rough pagoda Not yet cause the animations are still bugging

Bugging how?

olive meadow Jul 21, 2024, 9:21 PM

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You are setting self.jump to false as soon as it is true

mossy plume Jul 21, 2024, 9:22 PM

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Ohhhhhhhhh

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So this whole thing needs to change

rough pagoda Jul 21, 2024, 9:22 PM

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mossy plume Bugging how?

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The animations arent like moving like before

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Even when hes still he should have an animation for standing but when i set them barriers its just stopped all of that

rough pagoda Jul 21, 2024, 9:25 PM

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olive meadow You are setting self.jump to false as soon as it is true

So i should take out the self.Jump= false from the end of the draw method?

mossy plume Jul 21, 2024, 9:25 PM

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No

olive meadow Jul 21, 2024, 9:25 PM

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I would

mossy plume Jul 21, 2024, 9:25 PM

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No why?

olive meadow Jul 21, 2024, 9:25 PM

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You only want self.jump to be false once the character gets back to the floor

mossy plume Jul 21, 2024, 9:26 PM

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olive meadow You only want self.jump to be false once the character gets back to the floor

Yeah so why put it at the end?

olive meadow Jul 21, 2024, 9:26 PM

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I said to not put it at the end

mossy plume Jul 21, 2024, 9:26 PM

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Oh sorry

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Ohhh sorry

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I miss read it

rough pagoda Jul 21, 2024, 9:29 PM

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Ok ok

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Oh should I replace it with the on ground one being set to true?

mossy plume Jul 21, 2024, 9:30 PM

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No?

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Do you want your chracter to start on the ground?

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BTW the vel variable and the gravity var, does each chrarcter needs one of his own?

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I mean

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can't they be outside the class?

rough pagoda Jul 21, 2024, 9:32 PM

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No every characters gonna have the same

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Oh yh😭

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Ok so now the character does go down but he goes through the floor

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Progress !!🤣

mossy plume Jul 21, 2024, 9:33 PM

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Lol

rough pagoda Jul 21, 2024, 9:33 PM

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But he’s also going really high up

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Like off the screen high and then coming back down really slow

mossy plume Jul 21, 2024, 9:33 PM

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You can change the 12 to something else

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lower value

rough pagoda Jul 21, 2024, 9:33 PM

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Ok cool

mossy plume Jul 21, 2024, 9:34 PM

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Oh and you can also change the gravity

rough pagoda Jul 21, 2024, 9:34 PM

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Lower or higher?

mossy plume Jul 21, 2024, 9:34 PM

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The gravity heigher, the "jumpStreangth" if you will lower

rough pagoda Jul 21, 2024, 9:35 PM

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Ok nice it’s better now I think

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I can’t really tell how high it’s going cause it goes invisible

mossy plume Jul 21, 2024, 9:35 PM

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How do you mean?

rough pagoda Jul 21, 2024, 9:35 PM

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But when I crouch or move side to side I can see where abouts it is

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See if i dont press crouch its just invisible

mossy plume Jul 21, 2024, 9:36 PM

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Interesting

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I think I know why

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in the jump state you are not window.blit ing the chracter

rough pagoda Jul 21, 2024, 9:37 PM

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Oh yeah

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Ill put the standing animation into it for now

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mossy plume Jul 21, 2024, 9:40 PM

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You can put the jump anim

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I think

rough pagoda Jul 21, 2024, 9:41 PM

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And then what do i put inside the []

mossy plume Jul 21, 2024, 9:41 PM

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The walkCount?

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No

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the velocity

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int(y_vel)

rough pagoda Jul 21, 2024, 9:42 PM

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Ok ill give it a go

mossy plume Jul 21, 2024, 9:43 PM

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It also needs to be as long as the y velocity is grater then 6

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sorry grater then 0

rough pagoda Jul 21, 2024, 9:43 PM

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Wait wheres that gonna go

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Elif sef.jump== true AND self.y_vel>6???

mossy plume Jul 21, 2024, 9:44 PM

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No

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wait no

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You should keep a sepreate variable for jumping animation I think

rough pagoda Jul 21, 2024, 9:46 PM

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Wdum?

mossy plume Jul 21, 2024, 9:47 PM

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What do you mean?

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What don't you understand?

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so I can better help you

rough pagoda Jul 21, 2024, 9:50 PM

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What seperate variable ?

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I should make a new one?

mossy plume Jul 21, 2024, 9:50 PM

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Yeah

rough pagoda Jul 21, 2024, 9:50 PM

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Why?

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Also for the jump surely it shouldn’t just be one set number in the [] cause it’s 6 different sprite images

mossy plume Jul 21, 2024, 9:51 PM

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Idk, it's very late out here

mossy plume Jul 21, 2024, 9:52 PM

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rough pagoda Also for the jump surely it shouldn’t just be one set number in the [] cause it’...

Yaeh so a variable is the best option?

rough pagoda Jul 21, 2024, 9:52 PM

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mossy plume Idk, it's very late out here

Sorry bro😭

mossy plume Jul 21, 2024, 9:52 PM

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rough pagoda Sorry bro😭

Wdym?

rough pagoda Jul 21, 2024, 9:52 PM

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For taking up your time with this shit haha

mossy plume Jul 21, 2024, 9:53 PM

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Nah it fine

rough pagoda Jul 21, 2024, 9:53 PM

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mossy plume Yaeh so a variable is the best option?

Can you show me what you mean by this

mossy plume Jul 21, 2024, 9:53 PM

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Okay

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self.jumpCount = 0

# seperate piece of code AKA: draw method
elif self.jumping:
  image = jumping[jumpCout]
  if jumpCount < 6:
    jumpCount += 1

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I think this should do it

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I think ima go

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Good night

rough pagoda Jul 21, 2024, 10:02 PM

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Ok thank you so much

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If I have any more problems can you help me tomorrow please ?

raven doveBOT Jul 21, 2024, 11:03 PM

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Python help channel closed

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#🔒 jumping in a street fighter style game