@belshamo @Mario

I've noticed some strange behavior, most likely it's an error that needs to be fixed, but unfortunately, I haven't been able to find a solution for it. I'm writing about it in this thread because it's related to it. If we have a scene with a spine object that was loaded from the file system rather than from the game's resources, then upon reloading, the spine object will be empty. If you have a quick solution for this, I would greatly appreciate it.

Fix GDScript for Godot 3.x

extends Node
class_name SpineSpriteFileLoader

const known_atlasses = {}
const known_skeletons = {}

static func _load_spine_atlas(atlas_path:String) -> SpineAtlasResource:
	var atlas_res:SpineAtlasResource = null
	if known_atlasses.has(atlas_path) and known_atlasses[atlas_path].get_ref() != null:
		atlas_res = known_atlasses[atlas_path].get_ref()
	else:
		atlas_res = SpineAtlasResource.new()
		var error = atlas_res.load_from_atlas_file(atlas_path)
		if error != OK:
			printerr("Failure loading atlas@"+atlas_path,error)
		known_atlasses[atlas_path] = weakref(atlas_res)
	return atlas_res


static func _load_spine_skeleton(skeleton_json_path:String) -> SpineSkeletonFileResource:
	var skeleton_file_res:SpineSkeletonFileResource = null
	if known_skeletons.has(skeleton_json_path) and known_skeletons[skeleton_json_path].get_ref() != null:
		skeleton_file_res = known_skeletons[skeleton_json_path].get_ref()
	else:
		skeleton_file_res = SpineSkeletonFileResource.new()
		var error = skeleton_file_res.load_from_file(skeleton_json_path)
		if error != OK:
			printerr("Failure loading json-spine! ",error)
		known_skeletons[skeleton_json_path] = weakref(skeleton_file_res)
	return skeleton_file_res


static func load_spine_sprite(atlas_path:String, skeletonm_json_path:String) -> SpineSprite:
	var atlas_res:SpineAtlasResource = _load_spine_atlas(atlas_path)
	var skeleton_file_res:SpineSkeletonFileResource=_load_spine_skeleton(skeletonm_json_path)

	var skeleton_data_res:SpineSkeletonDataResource = SpineSkeletonDataResource.new()
	skeleton_data_res.skeleton_file_res = skeleton_file_res
	skeleton_data_res.atlas_res = atlas_res
	
	var sprite:SpineSprite = SpineSprite.new()
	sprite.skeleton_data_res = skeleton_data_res
	return sprite

Fix:

const String prefix = "res:/";
auto i = fixed_path.find(prefix);
 
Ref<Texture> texture;
if (i < 0) {
	Ref<Image> image;
	image.instance();
	image->load(fixed_path);
	
	Ref<ImageTexture> image_texture;
	image_texture.instance();
	image_texture->create_from_image(image);
	texture = image_texture;
} else {
	texture = ResourceLoader::load(fixed_path, "", false, &error);
}

Fix it loading spine sprite at runtime

I was able to make a similar modification for version 3.5.3, and it works!!

const String prefix = "res:/";
auto i = fixed_path.find(prefix);
Ref<ImageTexture> texture; 
if (i < 0) {
	Ref<Image> image;
	image.instance();
	image->load(fixed_path);
	
	texture.instance();
	texture->create_from_image(image);
} else {
	texture = ResourceLoader::load(fixed_path, "", false, &error);
}

I have figured out the image loading part, now I just need to turn it into a texture.

old:
Ref<Image> image=Image::load_from_file(fixed_path);

new:

Ref<Image> image;
image.instance();
ImageLoader::load_image(fixed_path, image);

belshamo
forum

I encountered the same issue. Could you please provide guidance on how to load a texture but only for Godot version 3.5.3, as the necessary methods are not present in the Godot *.cpp files?

Ref<Image> image=Image::load_from_file(fixed_path);
texture = ImageTexture::create_from_image(image);

The task at hand is to be able to load Spine animations from external directories outside of the program's folder in Godot during runtime. The issue is that the "load" and "preload" methods are not suitable for this purpose.

The first problem is that when loading an atlas, it is only possible to load from the resource folder and the root of the logical drive. Loading from an external folder or the "user://" folder does not work:

This works:

var atlas = SpineAtlasResource.new()
atlas.load_from_atlas_file("res://Assets/Spine/Boy.atlas")

This does not work:

var atlas = SpineAtlasResource.new()
atlas.load_from_atlas_file("user://Boy.atlas")

The error message shown is:

ResourceLoader::_load: Resource file not found: res://:/Boy.png.
GodotSpineTextureLoader::load: Can't load texture: "user://Boy.png"

This works:

var atlas = SpineAtlasResource.new()
atlas.load_from_atlas_file("C://Boy.atlas")

However, this does not work:

var atlas = SpineAtlasResource.new()
atlas.load_from_atlas_file("C://Users/user/Desktop/Boy.atlas")

It returns the same error stating that the file cannot be found or loaded.

The second issue is the lack of an available API interface for loading "*.spine-json" files:

var json = SpineSkeletonFileResource.new()
json.load_from_file ???

How to load it remains unclear.

Please assist in finding a solution.

Godot 3.5.3, Spine 4.2, Spine SRC file: ver.4.2