/* @license\n * Copyright 2012 Priit Kallas <kallaspriit@gmail.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining\n * a copy of this software and associated documentation files (the\n * "Software"), to deal in the Software without restriction, including\n * without limitation the rights to use, copy, modify, merge, publish,\n * distribute, sublicense, and/or sell copies of the Software, and to\n * permit persons to whom the Software is furnished to do so, subject to\n * the following conditions:\n *\n * The above copyright notice and this permission notice shall be\n * included in all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,\n * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\n * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE\n * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION\n * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION\n * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\n */\n!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;return d&&(void 0!==d.getGamepads?b=new f(a,function(){return d.getGamepads()}):void 0!==d.webkitGamepads?b=new f(a,function(){return d.webkitGamepads()}):void 0!==d.webkitGetGamepads&&(b=new f(a,function(){return d.webkitGetGamepads()}))),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;0<=b;b--)a=this.knownGamepads[b],d.indexOf(a)<0&&(this.knownGamepads.splice(b,1),this.listener._disconnect(a));for(b=0;b<d.length;b++)(a=d[b])&&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;return window&&void 0!==window.addEventListener&&(b=new g(a)),b},g.getType=function(){return"Firefox"},g.prototype.getType=function(){return g.getType()},g.prototype.isSupported=function(){return-1!==(window&&window.navigator).userAgent.indexOf("Firefox")},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=[g.factory,f.factory],h.Type={N64:"n64",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.N64},buttons:{byButton:[2,1,3,0,4,5,-1,-1,8,9,-1,-1,12,13,14,15,-1]},axes:{byAxis:[1,2,-1,-1]}},{env:{platform:f.getType(),type:h.Type.N64},buttons:{byButton:[2,1,3,0,4,5,-1,-1,8,9,-1,-1,12,13,14,15,-1]},axes:{byAxis:[0,1,-1,-1]}},{env:{platform:g.getType(),type:h.Type.XBOX},buttons:{byButton:[0,1,2,3,4,5,15,16,9,8,6,7,11,12,13,14,10]},axes:{byAxis:[0,1,2,3]}},{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;return this.platform=a,this.updateStrategy.start(function(){b._update()}),a.isSupported()},h.prototype.bind=function(a,b){return void 0===this.listeners[a]&&(this.listeners[a]=[]),this.listeners[a].push(b),this},h.prototype.unbind=function(a,b){if(void 0!==a){if(void 0!==b){if(void 0===this.listeners[a])return!1;for(var c=0;c<this.listeners[a].length;c++)if(this.listeners[a][c]===b)return this.listeners[a].splice(c,1),!0;return!1}this.listeners[a]=[]}else this.listeners={}},h.prototype.count=function(){return this.gamepads.length},h.prototype._fire=function(a,b){if(void 0!==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);for(a.state={},a.lastState={},a.updater=[],b=d.buttons.byButton.length,c=0;c<b;c++)this._addButtonUpdater(a,d,c);for(b=d.axes.byAxis.length,c=0;c<b;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,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=.5<b,e=.5<c;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,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)!==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};return function(d,e,f){var g,h=a,i=this;return-1!==(g=e.byButton[f])?"number"==typeof g&&g<d.buttons.length&&(h=function(){var a=d.buttons[g];return"number"==typeof a?a:"number"==typeof a.value?a.value:0}):e.byAxis&&f<e.byAxis.length&&function(a){return"[object Array]"===Object.prototype.toString.call(a)}(g=e.byAxis[f])&&3==g.length&&g[0]<d.axes.length&&(h=function(b,c,d){var e=a;return c<d?e=function(){var a=d-c,e=b();return(e=(e-c)/a)<0?0:e}:d<c&&(e=function(){var a=c-d,e=b();return 1<(e=(e-d)/a)?0:1-e}),e}(h=function(){var a=d.axes[g[0]];return i._applyDeadzoneMaximize(a)},g[1],g[2])),h}}(),h.prototype._createAxisGetter=function(){var a=function(){return 0};return function(b,c,d){var e,f=a,g=this;return-1!==(e=c.byAxis[d])&&"number"==typeof e&&e<b.axes.length&&(f=function(){var a=b.axes[e];return g._applyDeadzoneMaximize(a)}),f}}(),h.prototype._disconnect=function(a){var b,c=[];for(void 0!==this.gamepads[a.index]&&delete this.gamepads[a.index],b=0;b<this.gamepads.length;b++)void 0!==this.gamepads[b]&&(c[b]=this.gamepads[b]);this.gamepads=c,this._fire(h.Event.DISCONNECTED,a)},h.prototype._resolveControllerType=function(a){return-1!==(a=a.toLowerCase().replace(/\ss+/g," ").replace(/^\ss+|\ss+$/g,"")).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:-1!==a.indexOf("79-6-generic")&&-1!==a.indexOf("joystick")||-1!==a.indexOf("vendor: 0079 product: 0006")&&-1!==a.indexOf("generic usb joystick")?h.Type.N64: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()})}),0<this.gamepads.length&&this._fire(h.Event.TICK,this.gamepads)},h.prototype._applyDeadzoneMaximize=function(a,b,c){return b=void 0!==b?b:this.deadzone,c=void 0!==c?c:this.maximizeThreshold,0<=a?a<b?a=0:c<a&&(a=1):-b<a?a=0:a<-c&&(a=-1),a},a.Gamepad=h}("undefined"!=typeof module&&module.exports||window),\n/* @license\nThe MIT License (MIT)\n\nCopyright (c) 2014 mildmojo\n\nPermission is hereby granted, free of charge, to any person obtaining a copy of\nthis software and associated documentation files (the "Software"), to deal in\nthe Software without restriction, including without limitation the rights to\nuse, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\nthe Software, and to permit persons to whom the Software is furnished to do so,\nsubject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in all\ncopies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\nFOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\nCOPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\nIN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\nCONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\n*/\nfunction(exports){var Gamepad=window.Gamepad,gamepad=new Gamepad,axes={LEFT_STICK_X:0,LEFT_STICK_Y:0};function showLink(){var selected=document.querySelector(".gamepadSelected");if(selected&&!function(el){var offset=el.getBoundingClientRect();if(offset.left<0||offset.top<0)return!1;if(offset.left>window.innerWidth||offset.top>window.innerHeight)return!1;return!0}(selected)){var position=selected.getBoundingClientRect().top<0;selected.scrollIntoView(position)}}function getTwineLinks(){return document.querySelectorAll("a.internalLink, a.externalLink")}function findSelectedIndex(links){for(var i=0;i<links.length;i++)if(hasClass(links[i],"gamepadSelected"))return i;return null}function hasClass(el,className){return el.classList?el.classList.contains(className):new RegExp("(^| )"+className+"( |$)","gi").test(el.className)}function removeClass(el,className){el.classList?el.classList.remove(className):el.className=el.className.replace(new RegExp("(^|\s\sb)"+className.split(" ").join("|")+"(\s\sb|$)","gi")," ")}function addClass(el,className){el.classList?el.classList.add(className):el.className+=" "+className}gamepad.bind(Gamepad.Event.CONNECTED,function(_device){console.log("Gamepad connected.")}),gamepad.bind(Gamepad.Event.DISCONNECTED,function(_device){console.log("Gamepad disconnected.")}),gamepad.bind(Gamepad.Event.BUTTON_DOWN,function(e){switch(e.control){case"DPAD_DOWN":case"DPAD_RIGHT":!function(){var links=getTwineLinks();if(null===links)return;var selectedIndex=findSelectedIndex(links),newIndex=0;null!==selectedIndex&&(removeClass(links[selectedIndex],"gamepadSelected"),newIndex=(selectedIndex+1)%links.length);addClass(links[newIndex],"gamepadSelected"),showLink()}();break;case"DPAD_UP":case"DPAD_LEFT":!function(){var links=getTwineLinks();if(null===links)return;var selectedIndex=findSelectedIndex(links),newIndex=0;null!==selectedIndex&&(removeClass(links[selectedIndex],"gamepadSelected"),newIndex=0<selectedIndex?selectedIndex-1:links.length-1);addClass(links[newIndex],"gamepadSelected"),showLink()}();break;case"FACE_1":case"FACE_2":case"FACE_3":case"FACE_4":var selected=document.querySelector(".gamepadSelected");selected&&(removeClass(selected,"gamepadSelected"),selected.dispatchEvent(new MouseEvent("click")))}}),gamepad.bind(Gamepad.Event.AXIS_CHANGED,function(data){var newValue=0;.5<Math.abs(data.value)&&(newValue=data.value<0?-1:1,axes[data.axis]!==newValue&&("LEFT_STICK_X"===data.axis?-1===newValue?gamepad._fire(Gamepad.Event.BUTTON_DOWN,{control:"DPAD_LEFT"}):gamepad._fire(Gamepad.Event.BUTTON_DOWN,{control:"DPAD_RIGHT"}):"LEFT_STICK_Y"===data.axis&&(1===newValue?gamepad._fire(Gamepad.Event.BUTTON_DOWN,{control:"DPAD_DOWN"}):gamepad._fire(Gamepad.Event.BUTTON_DOWN,{control:"DPAD_UP"})))),axes[data.axis]=newValue}),gamepad.init()}("undefined"!=typeof module&&module.exports||window);

Twine-Gamepad Example\n\nYou may need to restart your browser after you connect a gamepad.\n\nYou may need to [[enable the Gamepad API]] in your browser.\n\nYou may need to press a face button on the controller before the browser will start reading gamepad events.\n\nUse the left stick or D-pad to navigate between links. Press any face button to visit a link.\n\n[[Here's a link.|That was easy]]\n[[Here's another.|That was easy]]\n[[Here's one more, for good measure.|That was easy]]\n\nAll done? Head back to [[twine-gamepad on GitHub|https://github.com/mildmojo/twine-gamepad]].

/* Keep surrounding text from jittering when 2px borders are added. */\na.internalLink, a.externalLink {\n padding: 2px;\n}\n\n/* Set the style for the currently-selected link. */\na.gamepadSelected {\n border: 2px dotted blue;\n padding: 0px;\n}

Hooray! You may now return to the front page.\n\n[[Start]]

Twine-Gamepad Example

In Firefox:\n1. Open 'about:config'.\n2. Search for 'gamepad'.\n3. Double-click 'dom.gamepad.enable' to change it from 'false' to 'true'.\n\nIn Chrome:\n1. Open '[[chrome://flags]]'.\n2. Enable the gamepad API (may only appear in 'dev' or 'canary' prerelease versions of the browser).\n\nIn IE and other browsers, the Gamepad API may not be supported at all.\n\n[[Back|Start]]