#Hitbox and hurtbox detection

1 messages · Page 1 of 1 (latest)

candid lagoon
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Isn't there a onCollisonEnter function?

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Or a godot alternative

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You might need to use onTriggerEnter instead actually

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Or the godot alternative

hushed sky
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yeah but i have one that already detects for an area which respawns the enemy, i need to know how i can link two specific areas and detect when they enter

candid lagoon
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body_entered might work

blazing abyss
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basically, make a hitbox component (area2d) underneath your player

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there's a fancy way of faking ecs in godot that will really help with making your code a lot more modular

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i'll link the video here

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you don't have to separate a bunch of things into nodes like this person does with velocity and health, but for hitboxes that should be enough

hushed sky
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Alright I’ll watch this, also thank you @candid lagoon I just realized that body_entered would be just enough

blazing abyss
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wait nvm i think i misunderstood your question

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you can have the same set up for your enemy when a hurtbox enters their hitbox and respawn them

hushed sky
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I just watched that and another video on composition and I kind of get it but still a little confused

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I actually used composition for an area to detect if the player touches something like a spike or my enemy so that the player dies but I didn’t realize that was composition

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Still gonna do more research on it

hushed sky
blazing abyss
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can you show how your scenes look?

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you can have another area2d underneath your player which detects enemies only

hushed sky
hushed sky
blazing abyss
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i'm still not sure what you are trying to do

blazing abyss
hushed sky
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oh shoot i didn't think of collision masks

blazing abyss
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btw use raycasts if you are trying to make it so you can jump on enemies, because if a hitbox is small then your hurtbox will pass right through it

hushed sky
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oh so i would have to use raycasts, yeah i'm trying to make it to where the enemy despawns when the player jumps on it

blazing abyss
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do that instead

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do a raycast check, then move the player

hushed sky
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so would i need to have that extra area 2d on top of the enemy or is the one on the enemy fine

blazing abyss
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you're probably fine with 1 since you're detecting the enemy

hushed sky
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Okay sorry for so many questions but i'm really trying to understand this. I put the raycast on my player, but i don't know how to detect if the raycast collided with the enemy

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i tried to put a signal but i couldn't find out how to use a signal to detect a raycast

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wait actually i think i figured something out

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i can set the argument of the signal as a raycast right?

blazing abyss
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make the raycast target_position equal the player's velocity * delta + 0.1, and force the raycast update

hushed sky
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like this?
ray_cast_2d.target_position = get_parent().velocity * delta + 0.1

blazing abyss
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(delta + 0.1)

hushed sky
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but what about detecting when it collides with the enemy?

blazing abyss
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ray_cast_2d.force_raycast_update()
if ray_cast_2d.is_colliding():
   ...
hushed sky
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"func _on_hitbox_body_entered(raycast2D):" would this be able to work as well?

blazing abyss
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no, the raycast should handle the collision

hushed sky
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but how would i be able to destroy the enemy from the player script?

blazing abyss
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by getting what the raycast collided with and calling .respawn() or something on it

hushed sky
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I'm not following. So i can get what the raycast collided with, is there a way that i can reference the enemy inside the player script to check?

blazing abyss
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yeah

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ray_cast_2d.get_collider()

hushed sky
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but that would be everything that it collides with, i only want something to happen if it collides with the enemy

blazing abyss
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then check if it's an enemy

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if collided_with is Enemy

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or use a collision mask

hushed sky
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so can i declare a variable that is equal to the enemy scene and check if it's colliding with it? or can i do what you just sent and check for the scene name

blazing abyss
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at the top of your enemy script, you might have:

extends Node2D

after that line, add:

class_name Enemy

and then you should be able to do collided_with is Enemy

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ray_cast_2d.force_raycast_update()
var collided_with = ray_cast_2d.get_collider()
if collided_with is Enemy:
  collided_with.respawn()
hushed sky
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my final question was gonna be how i can use "queue_free()" on the enemy through the player script but you just showed me lmao, thank you so much, gonna implement this and it should work

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sorry that it took a while for me to understand

hushed sky
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So i tried this and tried debugging but couldn't figure out the problem

func detect_when_attack_enemy(delta):
    var collided_with = ray_cast_2d.get_collider()
    ray_cast_2d.target_position = velocity * (delta + 0.1)
    ray_cast_2d.force_raycast_update()
    
    if collided_with is Enemy:
        collided_with.queue_free()```
blazing abyss
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what problem do you have?

hushed sky
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whenever i jump on the enemy it doesn't get destroyed and instead the player respawns because it collides with the enemy

blazing abyss
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are you detecting the enemy before moving?

hushed sky
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yeah it's the first function in my process function

blazing abyss
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hide the enemy because queue_free can take a little bit of time

hushed sky
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still doesn't work

blazing abyss
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i can't do much because i don't know how you made your game

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you can add invincibility for a short period of time

hushed sky
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i think i'll just leave it for tonight and see what i can do tomorrow, thank you