1 /**************************************************************************** 2 Copyright (c) 2010-2012 cocos2d-x.org 3 Copyright (c) 2008-2010 Ricardo Quesada 4 Copyright (c) 2011 Zynga Inc. 5 6 http://www.cocos2d-x.org 7 8 Permission is hereby granted, free of charge, to any person obtaining a copy 9 of this software and associated documentation files (the "Software"), to deal 10 in the Software without restriction, including without limitation the rights 11 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 copies of the Software, and to permit persons to whom the Software is 13 furnished to do so, subject to the following conditions: 14 15 The above copyright notice and this permission notice shall be included in 16 all copies or substantial portions of the Software. 17 18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 21 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 THE SOFTWARE. 25 ****************************************************************************/ 26 27 cc.UIInterfaceOrientationLandscapeLeft = -90; 28 29 cc.UIInterfaceOrientationLandscapeRight = 90; 30 31 cc.UIInterfaceOrientationPortraitUpsideDown = 180; 32 33 cc.UIInterfaceOrientationPortrait = 0; 34 35 /** 36 * he device accelerometer reports values for each axis in units of g-force 37 */ 38 cc.Acceleration = function (x, y, z, timestamp) { 39 this.x = x || 0; 40 this.y = y || 0; 41 this.z = z || 0; 42 this.timestamp = timestamp || 0; 43 }; 44 45 /** 46 * @class 47 * @extends cc.Class 48 */ 49 cc.Accelerometer = cc.Class.extend(/** @lends cc.Accelerometer# */{ 50 setDelegate: function (delegate) { 51 cc.AccelerometerDispatcher.getInstance().addDelegate(delegate); 52 }, 53 setAccelerometerInterval: function (interval) { 54 cc.AccelerometerDispatcher.getInstance().setAccelerometerInterval(interval); 55 } 56 }); 57 58 /** 59 * 60 * The cc.AccelerometerDelegate defines a single method for 61 * receiving acceleration-related data from the system. 62 * @class 63 * @extends cc.Class 64 */ 65 cc.AccelerometerDispatcher = cc.Class.extend(/** @lends cc.AccelerometerDispatcher# */{ 66 _delegate: null, 67 _acceleration: null, 68 _deviceEvent: null, 69 _interval: 0, 70 _minus: 1, 71 init: function () { 72 this._acceleration = new cc.Acceleration(); 73 this._deviceEvent = window.DeviceMotionEvent || window.DeviceOrientationEvent; 74 var ua = navigator.userAgent; 75 if (/Android/.test(ua) || (/Adr/.test(ua) && cc.Browser.type == "ucbrowser")) { 76 this._minus = -1; 77 } 78 79 //TODO fix DeviceMotionEvent bug on QQ Browser version 4.1 and below. 80 if (cc.Browser.type == "mqqbrowser") { 81 this._deviceEvent = window.DeviceOrientationEvent; 82 } 83 return true; 84 }, 85 86 getDelegate: function () { 87 return this._delegate; 88 }, 89 90 addDelegate: function (delegate) { 91 this._delegate = delegate; 92 var acc = this.didAccelerate.bind(this); 93 94 if (this._delegate) { 95 if (this._deviceEvent == window.DeviceMotionEvent) 96 window.addEventListener('devicemotion', acc, false); 97 else 98 window.addEventListener('deviceorientation', acc, false); 99 } else { 100 if (this._deviceEvent == window.DeviceMotionEvent) 101 window.removeEventListener('devicemotion', acc); 102 else 103 window.removeEventListener('deviceorientation', acc); 104 } 105 }, 106 107 setAccelerometerInterval: function (interval) { 108 if (this._interval !== interval) { 109 this._interval = interval; 110 } 111 }, 112 113 didAccelerate: function (eventData) { 114 if (!this._delegate) { 115 return; 116 } 117 118 var now = Date.now(); 119 if ((now - this._acceleration.timestamp) / 1000 < this._interval) return; 120 121 if (this._deviceEvent == window.DeviceMotionEvent) { 122 var acceleration = eventData.accelerationIncludingGravity; 123 this._acceleration.x = this._minus * acceleration.x * 0.1; 124 this._acceleration.y = this._minus * acceleration.y * 0.1; 125 this._acceleration.z = acceleration.z * 0.1; 126 } 127 else { 128 this._acceleration.x = (eventData.gamma / 90) * 0.981; 129 this._acceleration.y = -(eventData.beta / 90) * 0.981; 130 this._acceleration.z = (eventData.alpha / 90) * 0.981; 131 } 132 this._acceleration.timestamp = Date.now(); 133 134 var tmp = this._acceleration.x; 135 switch (window.orientation) { 136 case cc.UIInterfaceOrientationLandscapeRight://-90 137 this._acceleration.x = -this._acceleration.y; 138 this._acceleration.y = tmp; 139 break; 140 141 case cc.UIInterfaceOrientationLandscapeLeft://90 142 this._acceleration.x = this._acceleration.y; 143 this._acceleration.y = -tmp; 144 break; 145 146 case cc.UIInterfaceOrientationPortraitUpsideDown://180 147 this._acceleration.x = -this._acceleration.x 148 this._acceleration.y = -this._acceleration.y; 149 break; 150 151 case cc.UIInterfaceOrientationPortrait://0 152 break; 153 } 154 155 this._delegate.onAccelerometer(this._acceleration); 156 } 157 }); 158 159 160 cc.AccelerometerDispatcher.getInstance = function () { 161 if (!this._instance) { 162 this._instance = new cc.AccelerometerDispatcher(); 163 this._instance.init(); 164 } 165 166 return this._instance; 167 };