1 /**************************************************************************** 2 Copyright (c) 2011-2012 cocos2d-x.org 3 Copyright (c) 2013-2014 Chukong Technologies Inc. 4 5 http://www.cocos2d-x.org 6 7 Permission is hereby granted, free of charge, to any person obtaining a copy 8 of this software and associated documentation files (the "Software"), to deal 9 in the Software without restriction, including without limitation the rights 10 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 copies of the Software, and to permit persons to whom the Software is 12 furnished to do so, subject to the following conditions: 13 14 The above copyright notice and this permission notice shall be included in 15 all copies or substantial portions of the Software. 16 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 THE SOFTWARE. 24 ****************************************************************************/ 25 /** 26 * <p>cc.LoaderScene is a scene that you can load it when you loading files</p> 27 * <p>cc.LoaderScene can present thedownload progress </p> 28 * @class 29 * @extends cc.Scene 30 * @example 31 * var lc = new cc.LoaderScene(); 32 */ 33 cc.LoaderScene = cc.Scene.extend({ 34 _interval : null, 35 _label : null, 36 _className:"LoaderScene", 37 cb: null, 38 target: null, 39 /** 40 * Contructor of cc.LoaderScene 41 * @returns {boolean} 42 */ 43 init : function(){ 44 var self = this; 45 46 //logo 47 var logoWidth = 160; 48 var logoHeight = 200; 49 50 // bg 51 var bgLayer = self._bgLayer = new cc.LayerColor(cc.color(32, 32, 32, 255)); 52 self.addChild(bgLayer, 0); 53 54 //image move to CCSceneFile.js 55 var fontSize = 24, lblHeight = -logoHeight / 2 + 100; 56 if(cc._loaderImage){ 57 //loading logo 58 cc.loader.loadImg(cc._loaderImage, {isCrossOrigin : false }, function(err, img){ 59 logoWidth = img.width; 60 logoHeight = img.height; 61 self._initStage(img, cc.visibleRect.center); 62 }); 63 fontSize = 14; 64 lblHeight = -logoHeight / 2 - 10; 65 } 66 //loading percent 67 var label = self._label = new cc.LabelTTF("Loading... 0%", "Arial", fontSize); 68 label.setPosition(cc.pAdd(cc.visibleRect.center, cc.p(0, lblHeight))); 69 label.setColor(cc.color(180, 180, 180)); 70 bgLayer.addChild(this._label, 10); 71 return true; 72 }, 73 74 _initStage: function (img, centerPos) { 75 var self = this; 76 var texture2d = self._texture2d = new cc.Texture2D(); 77 texture2d.initWithElement(img); 78 texture2d.handleLoadedTexture(); 79 var logo = self._logo = new cc.Sprite(texture2d); 80 logo.setScale(cc.contentScaleFactor()); 81 logo.x = centerPos.x; 82 logo.y = centerPos.y; 83 self._bgLayer.addChild(logo, 10); 84 }, 85 /** 86 * custom onEnter 87 */ 88 onEnter: function () { 89 var self = this; 90 cc.Node.prototype.onEnter.call(self); 91 self.schedule(self._startLoading, 0.3); 92 }, 93 /** 94 * custom onExit 95 */ 96 onExit: function () { 97 cc.Node.prototype.onExit.call(this); 98 var tmpStr = "Loading... 0%"; 99 this._label.setString(tmpStr); 100 }, 101 102 /** 103 * init with resources 104 * @param {Array} resources 105 * @param {Function|String} cb 106 * @param {Object} target 107 */ 108 initWithResources: function (resources, cb, target) { 109 if(cc.isString(resources)) 110 resources = [resources]; 111 this.resources = resources || []; 112 this.cb = cb; 113 this.target = target; 114 }, 115 116 _startLoading: function () { 117 var self = this; 118 self.unschedule(self._startLoading); 119 var res = self.resources; 120 cc.loader.load(res, 121 function (result, count, loadedCount) { 122 var percent = (loadedCount / count * 100) | 0; 123 percent = Math.min(percent, 100); 124 self._label.setString("Loading... " + percent + "%"); 125 }, function () { 126 if (self.cb) 127 self.cb.call(self.target); 128 }); 129 }, 130 131 _updateTransform: function(){ 132 this._renderCmd.setDirtyFlag(cc.Node._dirtyFlags.transformDirty); 133 this._bgLayer._renderCmd.setDirtyFlag(cc.Node._dirtyFlags.transformDirty); 134 this._label._renderCmd.setDirtyFlag(cc.Node._dirtyFlags.transformDirty); 135 this._logo._renderCmd.setDirtyFlag(cc.Node._dirtyFlags.transformDirty); 136 } 137 }); 138 /** 139 * <p>cc.LoaderScene.preload can present a loaderScene with download progress.</p> 140 * <p>when all the resource are downloaded it will invoke call function</p> 141 * @param resources 142 * @param cb 143 * @param target 144 * @returns {cc.LoaderScene|*} 145 * @example 146 * //Example 147 * cc.LoaderScene.preload(g_resources, function () { 148 cc.director.runScene(new HelloWorldScene()); 149 }, this); 150 */ 151 cc.LoaderScene.preload = function(resources, cb, target){ 152 var _cc = cc; 153 if(!_cc.loaderScene) { 154 _cc.loaderScene = new cc.LoaderScene(); 155 _cc.loaderScene.init(); 156 cc.eventManager.addCustomListener(cc.Director.EVENT_PROJECTION_CHANGED, function(){ 157 _cc.loaderScene._updateTransform(); 158 }); 159 } 160 _cc.loaderScene.initWithResources(resources, cb, target); 161 162 cc.director.runScene(_cc.loaderScene); 163 return _cc.loaderScene; 164 };