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Asked By | ziggy |
so basically i have a kinematicbody2d with an area2d, collisionshape2d, and sprite as children of the kinematic node, ive written some code that enables it to be dragged across the screen by the user, i want to make it so that the user when they drag the kinematic body over a specific area the texture of the of the sprite changes
extends Area2D
var new_texture = “res://Assets/Passport1Closed.png”
func _on_Booth2D_body_entered(body: PhysicsBody2D)-> void:
$PassSprite.set_texture(new_texture)
i have this so far and i know its a simple solution but cant find the answer!
for context these are some of the errors i get
Attempt to call function ‘set_texture’ in base ‘null instance’ on a null instance.
The argument ‘body’ is never used in the function ‘_on_Booth2D_body_entered’. If this is intended, prefix it with an underscore: ‘_body’
The argument 'viewport is never used in the function '_on_PassArea_input_event. If this is intended, prefix it with an underscore: '_viewport*
The argument ‘event’ is never used in the function '_on_PassArea_input_event. If this is intended, prefix it with an underscore: '_event
The argument 'shape_jdx is never used in the function '_on_PassArea_input_event. If this is intended, prefix it with an underscore: "shape_idx
The argument body’ is never used in the function 'on_Booth2D body_entered! If this is intended, prefix it with an underscore: ’ body
ziggy | 2022-12-14 17:12
So, there’s only one actual error in the above messages. That’s the first one where you’re apparently trying to call set_texture() on an invalid object reference.
Looking at the posted code, that means that your $PassSprite reference is null. Where is that node in the scene tree compared to the node that contains the above script? It’d need to be a direct child for that code to work as intended.
jgodfrey | 2022-12-14 17:35
this makes a lot of sense, so i went and added my sprite to make it a child of the node where the above script is attached but now i have this error 
Invalid type in function ‘set_texture’ in base ‘Sprite (PassSpriteScr.gd)’. Cannot convert argument 1 from String to Object.
ziggy | 2022-12-14 18:53
Ah, yeah, that’s because the texture property expects a Texture, not a String containing the name of the texture’s source file. You can fix it by preloading the resource:
So, instead of this:
var new_texture = "res://Assets/Passport1Closed.png"
You want this:
var new_texture = preload("res://Assets/Passport1Closed.png")
jgodfrey | 2022-12-14 18:59
it worked your a legend !!!
ziggy | 2022-12-14 19:01
Also, you can set that texture using the texture property directly (no need to use the property setter). So:
$PassSprite.texture = new_texture
jgodfrey | 2022-12-14 19:08