Godot Version
4.21
Question
Hello!
I’m trying to make a custom resource that extends the Texture2D/ImageTexture resource that creates a texture from bits and pieces of a given image.
So if for example I have this wood board texture:
And I want to define how many individual boards this image contains (like a spritesheet) and then the resource dynamically updates to fill the bounds with the correct number of boards.
I already made a working version of this system using just the _draw() function of a ColorRect control node, however Control nodes interact with z-sort in a way that makes this solution cumbersome if not flat out broken.
Now I’m trying to use a Sprite2D node that z-sorts correctly by allowing me to set the z-sort origin, however using the _draw() function feels a bit excessive? I feel like there is a better solution to this problem, either a shader or a custom texture resource.
My problem is that I can’t seem to get my custom Texture2D resource to display anything at all! Here’s my current code that (the way I see it), should pretty much do the exact same thing as a regular old CompressedImageTexture resource:
class_name TiledTexture extends Texture2D
@export var texture: Texture2D:
set(value):
texture = value
emit_changed()
func _get_height():
texture.get_height()
func _get_width():
texture.get_width()
func _get_rid():
texture.get_rid()
func _has_alpha():
texture.has_alpha()
func _is_pixel_opaque(x, y):
texture.is_pixel_opaque(x, y)
func _get_size():
texture.get_size()
func _draw(to_canvas_item, pos, modulate, transpose):
if !texture:
return
texture.draw(to_canvas_item, pos, modulate, transpose)
func _draw_rect(to_canvas_item, rect, tile, modulate, transpose):
if !texture:
return
texture.draw_rect(to_canvas_item, rect, tile, modulate, transpose)
func _draw_rect_region(to_canvas_item, rect, src_rect, modulate, transpose, clip_uv):
if !texture:
return
texture.draw_rect_region(to_canvas_item, rect, src_rect, modulate, transpose, clip_uv)
If the best solution for this problem turns out to ultimately be _draw() calls or some sort of shader, then that’s perfectly fine by me, possibly even preferred! However I’m already so far down this rabbit hole of creating a custom Texture2D resource and I kind of want to get this custom resource to render something just for the sake of learning something new that may prove useful in the future.
If anybody has some knowledge to share I’m all ears!
Thank you in advance!