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Updated Background loading (markdown)

punto- 2014-04-19 23:46:21 -07:00
parent f0eecd6f6f
commit 38b67c662c
1 changed files with 6 additions and 5 deletions
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11
Background-loading.md

@ -16,7 +16,7 @@ Usage is generally as follows
Ref<ResourceInteractiveLoader> ResourceLoader::load_interactive(String p_path); Ref<ResourceInteractiveLoader> ResourceLoader::load_interactive(String p_path);
``` ```
This method will give you a ResourceLoaderInteractive that you will use to manager the load operation. This method will give you a ResourceLoaderInteractive that you will use to manage the load operation.
### Polling ### Polling
@ -71,7 +71,7 @@ func _ready():
current_scene = root.get_child( root.get_child_count() -1 ) current_scene = root.get_child( root.get_child_count() -1 )
``` ```
The function ```godot_scene``` is called from the game when the scene needs to be switched. It requests an interactive loader, and calls ```set_progress(true)``` to start polling the loading in the ```_progress``` callback. It also starts the "loading" animation, which can show a progress bar or loading screen, etc. The function ```goto_scene``` is called from the game when the scene needs to be switched. It requests an interactive loader, and calls ```set_progress(true)``` to start polling the loader in the ```_progress``` callback. It also starts a "loading" animation, which can show a progress bar or loading screen, etc.
``` ```
func goto_scene(path): # game requests to switch to this scene func goto_scene(path): # game requests to switch to this scene
@ -148,7 +148,7 @@ ResourceInteractiveLoader can be used from multiple threads. A couple of things
### Use a Semaphore ### Use a Semaphore
While your threads waits for the main thread to request a new resource, use a Semaphore to sleep (instead of a busy loop or anything similar). While your thread waits for the main thread to request a new resource, use a Semaphore to sleep (instead of a busy loop or anything similar).
### Don't block the main thread during the call to ```poll``` ### Don't block the main thread during the call to ```poll```
@ -195,9 +195,10 @@ Returns the fully loaded resource, or null on error. If the resource is not done
queue = preload("res://resource_queue.gd").new() queue = preload("res://resource_queue.gd").new()
queue.start() queue.start()
# suppose your game starts with a ~10 second custscene, during which they can't interact with the game. # suppose your game starts with a 10 second custscene, during which the user can't interact with the game.
# For that time we know they won't use the pause menu, so we can queue it to load during the cutscene: # For that time we know they won't use the pause menu, so we can queue it to load during the cutscene:
queue.queue_resource("res://pause_menu.xml") queue.queue_resource("res://pause_menu.xml")
start_curscene()
# later when the user presses the pause button for the first time: # later when the user presses the pause button for the first time:
pause_menu = queue.get_resource("res://pause_menu.xml").instance() pause_menu = queue.get_resource("res://pause_menu.xml").instance()
@ -211,7 +212,7 @@ queue.queue_resource("res://level_1.xml", true) # use "true" as the second param
if queue.is_ready("res://level_1.xml"): if queue.is_ready("res://level_1.xml"):
show_new_level(queue.get_resource("res://level_1.xml")) show_new_level(queue.get_resource("res://level_1.xml"))
else: else:
update_progress(queue.get_process(get_resource("res://level_1.xml")) update_progress(queue.get_process("res://level_1.xml"))
# when the user walks away from the trigger zone in your Metroidvania game: # when the user walks away from the trigger zone in your Metroidvania game:
queue.cancel_resource("res://zone_2.xml") queue.cancel_resource("res://zone_2.xml")