Question about Udemy Godot Tutorial - Hoppy Days

Simon_Catfish

Heyas, I'm following a tutorial on Udemy for "Hoppy Days" and when doing the environmental hazards section where the player reacts to a spike, they have the player "jump" up as a reaction. But when I try to change "motion.y -= JUMP_SPEED" to "motion.x-= 2000" nothing happens. Is there a different way to do it if I want the player "hurt" reaction to be horizontal instead of verical?

Megalomaniak

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jeremy

And you are sure that the func Hurt() is called by your signal?

SIsilicon28

I'm assuming the code worked before you made that change you described. Well I think the problem is that the move function overrides the motion.x property, so changing it from hurt() would do nothing.

To get it to work, you would need to change motion.x instead of upright setting it. The following code should suit your needs.

const AIR_DECEL = 3
const AIR_ACCEL = 4
const FLOOR_DECEL = 10
const FLOOR_ACCEL = 25

...

func move(delta): # You need to pass delta to this function now
    var decel = FLOOR_DECEL if is_on_floor() else AIR_DECEL
    var accel = FLOOR_ACCEL if is_on_floor() else AIR_ACCEL

    # acceleration
    if Input.is_action_pressed("left"):
        motion.x -= accel * SPEED * delta
    elif Input.is_action_pressed("right"):
        motion.x += accel * SPEED * delta
    
    motion.x -= motion.x * decel * delta # friction

I haven't tested the code yet, so you might wanna play around with the constants' values.

jeremy

it's true that the func apply_gravity() is putting motion.y to 0 when is_on_floor

if the code from Slsilicon28 is not what you are looking for (i think he wants the player to jump when it hits the spikes)

maybe try

func apply_gravity() #remove the is on floor and stuff
	motion.y += gravity (you can use delta but then you need to place it as a parameter in your function)

and in

func _physics_process()
	motion = Move_And_Slide(motion, Up)         #instead of move_and_slide(motion, Up)

and if u use the += instead of = for motion.x you need to set a max speed or your player wil run very fast :)

i like to use lerp for that, i think in godotscript its like this (not sure)

motion.x = lerp(motion.x,  maxspeed, 0.5)

i use C# so for me it's

motion.x = Mathf.lerp(motion.x, maxspeed, 0.5f);

hope this will help

Simon_Catfish

@SIsilicon28 said: I'm assuming the code worked before you made that change you described. Well I think the problem is that the move function overrides the motion.x property, so changing it from hurt() would do nothing.

Thanks Slsilcon28, This looks like it works!

Simon_Catfish

@jeremy said: it's true that the func apply_gravity() is putting motion.y to 0 when is_on_floor

if the code from Slsilicon28 is not what you are looking for (i think he wants the player to jump when it hits the spikes)

Thanks for the reply Jeremy! Slsilicon28's code seems is more what I was trying to do, which was bump-back in the opposite direction (plus a little jump) when touching a hazard, like in Megaman or Castlevania.