/* @license
 * Copyright 2012 Priit Kallas <kallaspriit@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
!function(a){"use strict";var b=function(){},c={getType:function(){return"null"},isSupported:function(){return!1},update:b},d=function(a){var c=this,d=window;this.update=b;this.requestAnimationFrame=a||d.requestAnimationFrame||d.webkitRequestAnimationFrame||d.mozRequestAnimationFrame;this.tickFunction=function(){c.update();c.startTicker()};this.startTicker=function(){c.requestAnimationFrame.apply(d,[c.tickFunction])}};d.prototype.start=function(a){this.update=a||b;this.startTicker()};var e=function(){};e.prototype.update=b;e.prototype.start=function(a){this.update=a||b};var f=function(a,b){this.listener=a;this.gamepadGetter=b;this.knownGamepads=[]};f.factory=function(a){var b=c,d=window&&window.navigator;d&&("undefined"!=typeof d.webkitGamepads?b=new f(a,function(){return d.webkitGamepads}):"undefined"!=typeof d.webkitGetGamepads&&(b=new f(a,function(){return d.webkitGetGamepads()})));return b};f.getType=function(){return"WebKit"},f.prototype.getType=function(){return f.getType()},f.prototype.isSupported=function(){return!0};f.prototype.update=function(){var a,b,c=this,d=Array.prototype.slice.call(this.gamepadGetter(),0);for(b=this.knownGamepads.length-1;b>=0;b--){a=this.knownGamepads[b];if(d.indexOf(a)<0){this.knownGamepads.splice(b,1);this.listener._disconnect(a)}}for(b=0;b<d.length;b++){a=d[b];if(a&&c.knownGamepads.indexOf(a)<0){c.knownGamepads.push(a);c.listener._connect(a)}}};var g=function(a){this.listener=a;window.addEventListener("gamepadconnected",function(b){a._connect(b.gamepad)});window.addEventListener("gamepaddisconnected",function(b){a._disconnect(b.gamepad)})};g.factory=function(a){var b=c;window&&"undefined"!=typeof window.addEventListener&&(b=new g(a));return b};g.getType=function(){return"Firefox"},g.prototype.getType=function(){return g.getType()},g.prototype.isSupported=function(){return!0};g.prototype.update=b;var h=function(a){this.updateStrategy=a||new d;this.gamepads=[];this.listeners={};this.platform=c;this.deadzone=.03;this.maximizeThreshold=.97};h.UpdateStrategies={AnimFrameUpdateStrategy:d,ManualUpdateStrategy:e};h.PlatformFactories=[f.factory,g.factory];h.Type={PLAYSTATION:"playstation",LOGITECH:"logitech",XBOX:"xbox",UNKNOWN:"unknown"};h.Event={CONNECTED:"connected",UNSUPPORTED:"unsupported",DISCONNECTED:"disconnected",TICK:"tick",BUTTON_DOWN:"button-down",BUTTON_UP:"button-up",AXIS_CHANGED:"axis-changed"};h.StandardButtons=["FACE_1","FACE_2","FACE_3","FACE_4","LEFT_TOP_SHOULDER","RIGHT_TOP_SHOULDER","LEFT_BOTTOM_SHOULDER","RIGHT_BOTTOM_SHOULDER","SELECT_BACK","START_FORWARD","LEFT_STICK","RIGHT_STICK","DPAD_UP","DPAD_DOWN","DPAD_LEFT","DPAD_RIGHT","HOME"];h.StandardAxes=["LEFT_STICK_X","LEFT_STICK_Y","RIGHT_STICK_X","RIGHT_STICK_Y"];var i=function(a,b,c){return b<a.length?a[b]:c+(b-a.length+1)};h.StandardMapping={env:{},buttons:{byButton:[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]},axes:{byAxis:[0,1,2,3]}};h.Mappings=[{env:{platform:g.getType(),type:h.Type.PLAYSTATION},buttons:{byButton:[14,13,15,12,10,11,8,9,0,3,1,2,4,6,7,5,16]},axes:{byAxis:[0,1,2,3]}},{env:{platform:f.getType(),type:h.Type.LOGITECH},buttons:{byButton:[1,2,0,3,4,5,6,7,8,9,10,11,11,12,13,14,10]},axes:{byAxis:[0,1,2,3]}},{env:{platform:g.getType(),type:h.Type.LOGITECH},buttons:{byButton:[0,1,2,3,4,5,-1,-1,6,7,8,9,11,12,13,14,10],byAxis:[-1,-1,-1,-1,-1,-1,[2,0,1],[2,0,-1]]},axes:{byAxis:[0,1,3,4]}}];h.prototype.init=function(){var a=h.resolvePlatform(this),b=this;this.platform=a;this.updateStrategy.start(function(){b._update()});return a.isSupported()};h.prototype.bind=function(a,b){"undefined"==typeof this.listeners[a]&&(this.listeners[a]=[]);this.listeners[a].push(b);return this};h.prototype.unbind=function(a,b){if("undefined"!=typeof a){if("undefined"!=typeof b){if("undefined"==typeof this.listeners[a])return!1;for(var c=0;c<this.listeners[a].length;c++)if(this.listeners[a][c]===b){this.listeners[a].splice(c,1);return!0}return!1}this.listeners[a]=[]}else this.listeners={}};h.prototype.count=function(){return this.gamepads.length};h.prototype._fire=function(a,b){if("undefined"!=typeof this.listeners[a])for(var c=0;c<this.listeners[a].length;c++)this.listeners[a][c].apply(this.listeners[a][c],[b])};h.getNullPlatform=function(){return Object.create(c)};h.resolvePlatform=function(a){var b,d=c;for(b=0;!d.isSupported()&&b<h.PlatformFactories.length;b++)d=h.PlatformFactories[b](a);return d};h.prototype._connect=function(a){var b,c,d=this._resolveMapping(a);a.state={};a.lastState={};a.updater=[];b=d.buttons.byButton.length;for(c=0;b>c;c++)this._addButtonUpdater(a,d,c);b=d.axes.byAxis.length;for(c=0;b>c;c++)this._addAxisUpdater(a,d,c);this.gamepads[a.index]=a;this._fire(h.Event.CONNECTED,a)};h.prototype._addButtonUpdater=function(a,c,d){var e=b,f=i(h.StandardButtons,d,"EXTRA_BUTTON_"),g=this._createButtonGetter(a,c.buttons,d),j=this,k={gamepad:a,control:f};a.state[f]=0;a.lastState[f]=0;e=function(){var b=g(),c=a.lastState[f],d=b>.5,e=c>.5;a.state[f]=b;d&&!e?j._fire(h.Event.BUTTON_DOWN,Object.create(k)):!d&&e&&j._fire(h.Event.BUTTON_UP,Object.create(k));0!==b&&1!==b&&b!==c&&j._fireAxisChangedEvent(a,f,b);a.lastState[f]=b};a.updater.push(e)};h.prototype._addAxisUpdater=function(a,c,d){var e=b,f=i(h.StandardAxes,d,"EXTRA_AXIS_"),g=this._createAxisGetter(a,c.axes,d),j=this;a.state[f]=0;a.lastState[f]=0;e=function(){var b=g(),c=a.lastState[f];a.state[f]=b;b!==c&&j._fireAxisChangedEvent(a,f,b);a.lastState[f]=b};a.updater.push(e)};h.prototype._fireAxisChangedEvent=function(a,b,c){var d={gamepad:a,axis:b,value:c};this._fire(h.Event.AXIS_CHANGED,d)};h.prototype._createButtonGetter=function(){var a=function(){return 0},b=function(b,c,d){var e=a;d>c?e=function(){var a=d-c,e=b();e=(e-c)/a;return 0>e?0:e}:c>d&&(e=function(){var a=c-d,e=b();e=(e-d)/a;return e>1?0:1-e});return e},c=function(a){return"[object Array]"===Object.prototype.toString.call(a)};return function(d,e,f){var g,h=a,i=this;g=e.byButton[f];if(-1!==g)"number"==typeof g&&g<d.buttons.length&&(h=function(){return d.buttons[g]});else if(e.byAxis&&f<e.byAxis.length){g=e.byAxis[f];if(c(g)&&3==g.length&&g[0]<d.axes.length){h=function(){var a=d.axes[g[0]];return i._applyDeadzoneMaximize(a)};h=b(h,g[1],g[2])}}return h}}();h.prototype._createAxisGetter=function(){var a=function(){return 0};return function(b,c,d){var e,f=a,g=this;e=c.byAxis[d];-1!==e&&"number"==typeof e&&e<b.axes.length&&(f=function(){var a=b.axes[e];return g._applyDeadzoneMaximize(a)});return f}}();h.prototype._disconnect=function(a){var b,c=[];"undefined"!=typeof this.gamepads[a.index]&&delete this.gamepads[a.index];for(b=0;b<this.gamepads.length;b++)"undefined"!=typeof this.gamepads[b]&&(c[b]=this.gamepads[b]);this.gamepads=c;this._fire(h.Event.DISCONNECTED,a)};h.prototype._resolveControllerType=function(a){a=a.toLowerCase();return-1!==a.indexOf("playstation")?h.Type.PLAYSTATION:-1!==a.indexOf("logitech")||-1!==a.indexOf("wireless gamepad")?h.Type.LOGITECH:-1!==a.indexOf("xbox")||-1!==a.indexOf("360")?h.Type.XBOX:h.Type.UNKNOWN};h.prototype._resolveMapping=function(a){var b,c,d=h.Mappings,e=null,f={platform:this.platform.getType(),type:this._resolveControllerType(a.id)};for(b=0;!e&&b<d.length;b++){c=d[b];h.envMatchesFilter(c.env,f)&&(e=c)}return e||h.StandardMapping};h.envMatchesFilter=function(a,b){var c,d=!0;for(c in a)a[c]!==b[c]&&(d=!1);return d};h.prototype._update=function(){this.platform.update();this.gamepads.forEach(function(a){a&&a.updater.forEach(function(a){a()})});this.gamepads.length>0&&this._fire(h.Event.TICK,this.gamepads)},h.prototype._applyDeadzoneMaximize=function(a,b,c){b="undefined"!=typeof b?b:this.deadzone;c="undefined"!=typeof c?c:this.maximizeThreshold;a>=0?b>a?a=0:a>c&&(a=1):a>-b?a=0:-c>a&&(a=-1);return a};a.Gamepad=h}("undefined"!=typeof module&&module.exports||window);