I have a game where I need to buy items such as PC components, but if I create the first item after starting the game, the game hangs for a second while loading the model. I want to load models when I start the game, so if I create an item, it doesn’t load model and the game doesn’t lag.
items_manager.gd
extends Node
@export var items_spawnpoint : Marker3D
var selected_category = null
var selected_item = null
func create_item(item):
var item_scene = load(item["scene"])
var item_instance = item_scene.instantiate()
item_instance.model = load(item["model"]) #"item["model"] is path to model.tscn
item_instance.rating = item["rating"]
add_child(item_instance)
item_instance.transform.origin = items_spawnpoint.transform.origin
print(str(item))
mean, that it only lagging when creating an object for the first time, if I create the same object for the second time, it will not drop framerate, I wanted to ask if there is a way to load all the models when starting the game to avoid loading them when creating the game.
there is, so you make the loading scene and list all the scenes and load from the list
remember this is just load, not instantiate and add_child()
there is also different between basic .load and ResourceLoader.load_threaded_request(_scene_path,"",true)
the latter method is quicker load in terms of time vs basic .load
remember that if you use shader in your scene, that scene will need a flash, meaning create all the scenes that need to be flashed with instantiate and add child, then wait for 0.1 seconds, then queue free it. This to ensure the next time user trying to make the same scene with shader, it can smoothly shown in the game.
why “flash” the shader scene? because it looks like shader will start compiling after it’s visible in game. these whole things about shader compilation first lag has a pull request the: Ubershaders and pipeline pre-compilation (and dedicated transfer queues). by DarioSamo · Pull Request #90400 · godotengine/godot · GitHub that try to fix the lag, but not yet implemented to any version
thanks, i made a little script which preloading all scenes
func preload_items():
for category_data in items_data.values():
for item_data in category_data:
var scene_path = item_data["scene"]
var model_path = item_data["model"]
if scene_path not in item_scenes:
var scene = load(scene_path)
if scene:
item_scenes[scene_path] = scene
else:
print("Error: Failed to preload scene:", scene_path)
if model_path not in item_models:
var model = load(model_path)
if model:
item_models[model_path] = model
else:
print("Error: Failed to preload model:", model_path)
