114 lines
2.5 KiB
JavaScript
114 lines
2.5 KiB
JavaScript
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window.Loader = {};
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Loader.manifest = {};
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Loader.manifestPreload = {}; // For Preloader
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Loader.sounds = {};
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/***************
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Actually LOAD all the assets in a manifest. Like so:
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Loader.loadAssets(Loader.manifest, function(){
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Loader.sceneManager.gotoScene(Loader.START_SCENE);
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Loader.startUpdateAndDraw();
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});
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***************/
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Loader.loadAssets = function(manifest, completeCallback, progressCallback){
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var deferred = Q.defer();
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completeCallback = completeCallback || function(){};
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progressCallback = progressCallback || function(){};
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// ABSOLUTE NUMBER OF ASSETS!
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var _isLoadingImages = 0;
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var _isLoadingSounds = 0;
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var _totalAssetsLoaded = 0;
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var _totalAssetsToLoad = 0;
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for(var key in manifest){
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var src = manifest[key];
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// Loading sounds or images?
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if(src.slice(-4)==".mp3") _isLoadingSounds=1;
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else _isLoadingImages=1;
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// Loading sprite or image?
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if(src.slice(-5)==".json") _totalAssetsToLoad+=2; // Is Sprite. Actually TWO assets.
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else _totalAssetsToLoad+=1;
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}
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// When you load an asset
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var _onAssetLoad = function(){
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_totalAssetsLoaded++;
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if(progressCallback){
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progressCallback(_totalAssetsLoaded/_totalAssetsToLoad); // Callback PROGRESS
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}
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};
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// When you load a group
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var _groupsToLoad = _isLoadingImages + _isLoadingSounds;
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var _onGroupLoaded = function(){
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_groupsToLoad--;
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if(_groupsToLoad==0){
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completeCallback(); // DONE.
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deferred.resolve();
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}
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};
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// HOWLER - Loading Sounds
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var _soundsToLoad = 0;
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var _onSoundLoad = function(){
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_soundsToLoad--;
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_onAssetLoad();
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if(_soundsToLoad==0) _onGroupLoaded();
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};
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// PIXI - Loading Images & Sprites (or pass it to Howler)
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var loader = PIXI.loader;
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var resources = PIXI.loader.resources;
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for(var key in manifest){
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var src = manifest[key];
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// Is MP3. Leave it to Howler.
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if(src.slice(-4)==".mp3"){
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var sound = new Howl({ src:[src] });
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_soundsToLoad++;
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sound.once('load', _onSoundLoad);
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Loader.sounds[key] = sound;
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continue;
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}
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// Otherwise, is an image (or json). Leave it to PIXI.
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loader.add(key, src);
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}
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loader.on('progress', _onAssetLoad);
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loader.once('complete', _onGroupLoaded);
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loader.load();
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// Promise!
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return deferred.promise;
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};
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/***************
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Add assets to manifest! Like so:
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Loader.addToManifest(Loader.manifest,{
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bg: "sprites/bg.png",
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button: "sprites/button/button.json",
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[key]: [filepath],
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[key]: [filepath],
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etc...
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});
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***************/
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Loader.addToManifest = function(manifest, keyValues){
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for(var key in keyValues){
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manifest[key] = keyValues[key];
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}
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};
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