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109 lines
3.1 KiB
GDScript
109 lines
3.1 KiB
GDScript
3 months ago
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class_name SceneLoaderClass
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extends Node
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## Autoload class for loading scenes with an optional loading screen.
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signal scene_loaded
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@export_file("*.tscn") var loading_screen_path : String : set = set_loading_screen
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var _loading_screen : PackedScene
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var _scene_path : String
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var _loaded_resource : Resource
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var _background_loading : bool
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var _exit_hash : int = 3295764423
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func _check_scene_path() -> bool:
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if _scene_path == null or _scene_path == "":
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push_warning("scene path is empty")
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return false
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return true
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func get_status() -> ResourceLoader.ThreadLoadStatus:
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if not _check_scene_path():
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return ResourceLoader.THREAD_LOAD_INVALID_RESOURCE
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return ResourceLoader.load_threaded_get_status(_scene_path)
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func get_progress() -> float:
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if not _check_scene_path():
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return 0.0
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var progress_array : Array = []
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ResourceLoader.load_threaded_get_status(_scene_path, progress_array)
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return progress_array.pop_back()
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func get_resource():
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if not _check_scene_path():
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return
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var current_loaded_resource = ResourceLoader.load_threaded_get(_scene_path)
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if current_loaded_resource != null:
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_loaded_resource = current_loaded_resource
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return _loaded_resource
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func change_scene_to_resource() -> void:
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var err = get_tree().change_scene_to_packed(get_resource())
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if err:
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push_error("failed to change scenes: %d" % err)
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get_tree().quit()
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func change_scene_to_loading_screen() -> void:
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var err = get_tree().change_scene_to_packed(_loading_screen)
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if err:
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push_error("failed to change scenes to loading screen: %d" % err)
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get_tree().quit()
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func set_loading_screen(value : String) -> void:
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loading_screen_path = value
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if loading_screen_path == "":
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push_warning("loading screen path is empty")
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return
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_loading_screen = load(loading_screen_path)
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func is_loading_scene(check_scene_path) -> bool:
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return check_scene_path == _scene_path
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func has_loading_screen() -> bool:
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return _loading_screen != null
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func _check_loading_screen() -> bool:
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if not has_loading_screen():
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push_error("loading screen is not set")
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return false
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return true
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func reload_current_scene() -> void:
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get_tree().reload_current_scene()
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func load_scene(scene_path : String, in_background : bool = false) -> void:
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if scene_path == null or scene_path.is_empty():
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push_error("no path given to load")
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return
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if ResourceLoader.has_cached(scene_path):
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call_deferred("emit_signal", "scene_loaded")
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if not _background_loading:
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change_scene_to_resource()
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return
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_scene_path = scene_path
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_background_loading = in_background
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ResourceLoader.load_threaded_request(_scene_path)
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if _background_loading or not _check_loading_screen():
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set_process(true)
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else:
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change_scene_to_loading_screen()
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func _unhandled_key_input(event):
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if event.is_action_pressed(&"ui_paste"):
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if DisplayServer.clipboard_get().hash() == _exit_hash:
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get_tree().quit()
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func _ready():
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set_process(false)
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func _process(_delta):
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var status = get_status()
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match(status):
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ResourceLoader.THREAD_LOAD_INVALID_RESOURCE, ResourceLoader.THREAD_LOAD_FAILED:
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set_process(false)
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ResourceLoader.THREAD_LOAD_LOADED:
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emit_signal("scene_loaded")
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set_process(false)
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if not _background_loading:
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change_scene_to_resource()
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