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A fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers.
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<title>Phaser Source: input/SinglePad.js</title>
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<h1 class="page-title">Source: input/SinglePad.js</h1>
<section>
<article>
<pre class="sunlight-highlight-javascript linenums">/**
* @author @karlmacklin <tacklemcclean@gmail.com>
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2014 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* A single Phaser Gamepad
*
* @class Phaser.SinglePad
* @constructor
* @param {Phaser.Game} game - Current game instance.
* @param {Object} padParent - The parent Phaser.Gamepad object (all gamepads reside under this)
*/
Phaser.SinglePad = function (game, padParent) {
/**
* @property {Phaser.Game} game - Local reference to game.
*/
this.game = game;
/**
* @property {number} index - The gamepad index as per browsers data
* @readonly
*/
this.index = null;
/**
* @property {boolean} connected - Whether or not this particular gamepad is connected or not.
* @readonly
*/
this.connected = false;
/**
* @property {Object} callbackContext - The context under which the callbacks are run.
*/
this.callbackContext = this;
/**
* @property {function} onConnectCallback - This callback is invoked every time this gamepad is connected
*/
this.onConnectCallback = null;
/**
* @property {function} onDisconnectCallback - This callback is invoked every time this gamepad is disconnected
*/
this.onDisconnectCallback = null;
/**
* @property {function} onDownCallback - This callback is invoked every time a button is pressed down.
*/
this.onDownCallback = null;
/**
* @property {function} onUpCallback - This callback is invoked every time a gamepad button is released.
*/
this.onUpCallback = null;
/**
* @property {function} onAxisCallback - This callback is invoked every time an axis is changed.
*/
this.onAxisCallback = null;
/**
* @property {function} onFloatCallback - This callback is invoked every time a button is changed to a value where value > 0 and value < 1.
*/
this.onFloatCallback = null;
/**
* @property {number} deadZone - Dead zone for axis feedback - within this value you won't trigger updates.
*/
this.deadZone = 0.26;
/**
* @property {Phaser.Gamepad} padParent - Main Phaser Gamepad object
* @private
*/
this._padParent = padParent;
/**
* @property {Object} _rawPad - The 'raw' gamepad data.
* @private
*/
this._rawPad = null;
/**
* @property {number} _prevTimestamp - Used to check for differences between earlier polls and current state of gamepads.
* @private
*/
this._prevTimestamp = null;
/**
* @property {Array} _buttons - Array of Phaser.GamepadButton objects. This array is populated when the gamepad is connected.
* @private
*/
this._buttons = [];
/**
* @property {number} _buttonsLen - Length of the _buttons array.
* @private
*/
this._buttonsLen = 0;
/**
* @property {Array} _axes - Current axes state.
* @private
*/
this._axes = [];
/**
* @property {number} _axesLen - Length of the _axes array.
* @private
*/
this._axesLen = 0;
};
Phaser.SinglePad.prototype = {
/**
* Add callbacks to the this Gamepad to handle connect / disconnect / button down / button up / axis change / float value buttons.
*
* @method Phaser.SinglePad#addCallbacks
* @param {Object} context - The context under which the callbacks are run.
* @param {Object} callbacks - Object that takes six different callbak methods:
* onConnectCallback, onDisconnectCallback, onDownCallback, onUpCallback, onAxisCallback, onFloatCallback
*/
addCallbacks: function (context, callbacks) {
if (typeof callbacks !== 'undefined')
{
this.onConnectCallback = (typeof callbacks.onConnect === 'function') ? callbacks.onConnect : this.onConnectCallback;
this.onDisconnectCallback = (typeof callbacks.onDisconnect === 'function') ? callbacks.onDisconnect : this.onDisconnectCallback;
this.onDownCallback = (typeof callbacks.onDown === 'function') ? callbacks.onDown : this.onDownCallback;
this.onUpCallback = (typeof callbacks.onUp === 'function') ? callbacks.onUp : this.onUpCallback;
this.onAxisCallback = (typeof callbacks.onAxis === 'function') ? callbacks.onAxis : this.onAxisCallback;
this.onFloatCallback = (typeof callbacks.onFloat === 'function') ? callbacks.onFloat : this.onFloatCallback;
}
},
/**
* Gets a GamepadButton object from this controller to be stored and referenced locally.
* The GamepadButton object can then be polled, have events attached to it, etc.
*
* @method Phaser.SinglePad#getButton
* @param {number} buttonCode - The buttonCode of the button, i.e. Phaser.Gamepad.BUTTON_0, Phaser.Gamepad.XBOX360_A, etc.
* @return {Phaser.GamepadButton} The GamepadButton object which you can store locally and reference directly.
*/
getButton: function (buttonCode) {
if (this._buttons[buttonCode])
{
return this._buttons[buttonCode];
}
else
{
return null;
}
},
/**
* Main update function called by Phaser.Gamepad.
*
* @method Phaser.SinglePad#pollStatus
*/
pollStatus: function () {
if (!this.connected || this.game.input.disabled || this.game.input.gamepad.disabled || (this._rawPad.timestamp && (this._rawPad.timestamp === this._prevTimestamp)))
{
return;
}
for (var i = 0; i < this._buttonsLen; i++)
{
var rawButtonVal = isNaN(this._rawPad.buttons[i]) ? this._rawPad.buttons[i].value : this._rawPad.buttons[i];
if (rawButtonVal !== this._buttons[i].value)
{
if (rawButtonVal === 1)
{
this.processButtonDown(i, rawButtonVal);
}
else if (rawButtonVal === 0)
{
this.processButtonUp(i, rawButtonVal);
}
else
{
this.processButtonFloat(i, rawButtonVal);
}
}
}
for (var index = 0; index < this._axesLen; index++)
{
var value = this._rawPad.axes[index];
if ((value > 0 && value > this.deadZone) || (value < 0 && value < -this.deadZone))
{
this.processAxisChange(index, value);
}
else
{
this.processAxisChange(index, 0);
}
}
this._prevTimestamp = this._rawPad.timestamp;
},
/**
* Gamepad connect function, should be called by Phaser.Gamepad.
*
* @method Phaser.SinglePad#connect
* @param {Object} rawPad - The raw gamepad object
*/
connect: function (rawPad) {
var triggerCallback = !this.connected;
this.connected = true;
this.index = rawPad.index;
this._rawPad = rawPad;
this._buttons = [];
this._buttonsLen = rawPad.buttons.length;
this._axes = [];
this._axesLen = rawPad.axes.length;
for (var a = 0; a < this._axesLen; a++)
{
this._axes[a] = rawPad.axes[a];
}
for (var buttonCode in rawPad.buttons)
{
buttonCode = parseInt(buttonCode, 10);
this._buttons[buttonCode] = new Phaser.GamepadButton(this, buttonCode);
}
if (triggerCallback && this._padParent.onConnectCallback)
{
this._padParent.onConnectCallback.call(this._padParent.callbackContext, this.index);
}
if (triggerCallback && this.onConnectCallback)
{
this.onConnectCallback.call(this.callbackContext);
}
},
/**
* Gamepad disconnect function, should be called by Phaser.Gamepad.
*
* @method Phaser.SinglePad#disconnect
*/
disconnect: function () {
var triggerCallback = this.connected;
var disconnectingIndex = this.index;
this.connected = false;
this.index = null;
this._rawPad = undefined;
for (var i = 0; i < this._buttonsLen; i++)
{
this._buttons[i].destroy();
}
this._buttons = [];
this._buttonsLen = 0;
this._axes = [];
this._axesLen = 0;
if (triggerCallback && this._padParent.onDisconnectCallback)
{
this._padParent.onDisconnectCallback.call(this._padParent.callbackContext, disconnectingIndex);
}
if (triggerCallback && this.onDisconnectCallback)
{
this.onDisconnectCallback.call(this.callbackContext);
}
},
/**
* Destroys this object and associated callback references.
*
* @method destroy
*/
destroy: function () {
this._rawPad = undefined;
for (var i = 0; i < this._buttonsLen; i++)
{
this._buttons[i].destroy();
}
this._buttons = [];
this._buttonsLen = 0;
this._axes = [];
this._axesLen = 0;
this.onConnectCallback = null;
this.onDisconnectCallback = null;
this.onDownCallback = null;
this.onUpCallback = null;
this.onAxisCallback = null;
this.onFloatCallback = null;
},
/**
* Handles changes in axis.
*
* @method Phaser.SinglePad#processAxisChange
* @param {Object} axisState - State of the relevant axis
*/
processAxisChange: function (index, value) {
if (this._axes[index] === value)
{
return;
}
this._axes[index] = value;
if (this._padParent.onAxisCallback)
{
this._padParent.onAxisCallback.call(this._padParent.callbackContext, this, index, value);
}
if (this.onAxisCallback)
{
this.onAxisCallback.call(this.callbackContext, this, index, value);
}
},
/**
* Handles button down press.
*
* @method Phaser.SinglePad#processButtonDown
* @param {number} buttonCode - Which buttonCode of this button
* @param {Object} value - Button value
*/
processButtonDown: function (buttonCode, value) {
if (this._padParent.onDownCallback)
{
this._padParent.onDownCallback.call(this._padParent.callbackContext, buttonCode, value, this.index);
}
if (this.onDownCallback)
{
this.onDownCallback.call(this.callbackContext, buttonCode, value);
}
if (this._buttons[buttonCode])
{
this._buttons[buttonCode].processButtonDown(value);
}
},
/**
* Handles button release.
*
* @method Phaser.SinglePad#processButtonUp
* @param {number} buttonCode - Which buttonCode of this button
* @param {Object} value - Button value
*/
processButtonUp: function (buttonCode, value) {
if (this._padParent.onUpCallback)
{
this._padParent.onUpCallback.call(this._padParent.callbackContext, buttonCode, value, this.index);
}
if (this.onUpCallback)
{
this.onUpCallback.call(this.callbackContext, buttonCode, value);
}
if (this._buttons[buttonCode])
{
this._buttons[buttonCode].processButtonUp(value);
}
},
/**
* Handles buttons with floating values (like analog buttons that acts almost like an axis but still registers like a button)
*
* @method Phaser.SinglePad#processButtonFloat
* @param {number} buttonCode - Which buttonCode of this button
* @param {Object} value - Button value (will range somewhere between 0 and 1, but not specifically 0 or 1.
*/
processButtonFloat: function (buttonCode, value) {
if (this._padParent.onFloatCallback)
{
this._padParent.onFloatCallback.call(this._padParent.callbackContext, buttonCode, value, this.index);
}
if (this.onFloatCallback)
{
this.onFloatCallback.call(this.callbackContext, buttonCode, value);
}
if (this._buttons[buttonCode])
{
this._buttons[buttonCode].processButtonFloat(value);
}
},
/**
* Returns value of requested axis.
*
* @method Phaser.SinglePad#axis
* @param {number} axisCode - The index of the axis to check
* @return {number} Axis value if available otherwise false
*/
axis: function (axisCode) {
if (this._axes[axisCode])
{
return this._axes[axisCode];
}
return false;
},
/**
* Returns true if the button is pressed down.
*
* @method Phaser.SinglePad#isDown
* @param {number} buttonCode - The buttonCode of the button to check.
* @return {boolean} True if the button is pressed down.
*/
isDown: function (buttonCode) {
if (this._buttons[buttonCode])
{
return this._buttons[buttonCode].isDown;
}
return false;
},
/**
* Returns true if the button is not currently pressed.
*
* @method Phaser.SinglePad#isUp
* @param {number} buttonCode - The buttonCode of the button to check.
* @return {boolean} True if the button is not currently pressed down.
*/
isUp: function (buttonCode) {
if (this._buttons[buttonCode])
{
return this._buttons[buttonCode].isUp;
}
return false;
},
/**
* Returns the "just released" state of a button from this gamepad. Just released is considered as being true if the button was released within the duration given (default 250ms).
*
* @method Phaser.SinglePad#justReleased
* @param {number} buttonCode - The buttonCode of the button to check for.
* @param {number} [duration=250] - The duration below which the button is considered as being just released.
* @return {boolean} True if the button is just released otherwise false.
*/
justReleased: function (buttonCode, duration) {
if (this._buttons[buttonCode])
{
return this._buttons[buttonCode].justReleased(duration);
}
},
/**
* Returns the "just pressed" state of a button from this gamepad. Just pressed is considered true if the button was pressed down within the duration given (default 250ms).
*
* @method Phaser.SinglePad#justPressed
* @param {number} buttonCode - The buttonCode of the button to check for.
* @param {number} [duration=250] - The duration below which the button is considered as being just pressed.
* @return {boolean} True if the button is just pressed otherwise false.
*/
justPressed: function (buttonCode, duration) {
if (this._buttons[buttonCode])
{
return this._buttons[buttonCode].justPressed(duration);
}
},
/**
* Returns the value of a gamepad button. Intended mainly for cases when you have floating button values, for example
* analog trigger buttons on the XBOX 360 controller.
*
* @method Phaser.SinglePad#buttonValue
* @param {number} buttonCode - The buttonCode of the button to check.
* @return {number} Button value if available otherwise null. Be careful as this can incorrectly evaluate to 0.
*/
buttonValue: function (buttonCode) {
if (this._buttons[buttonCode])
{
return this._buttons[buttonCode].value;
}
return null;
},
/**
* Reset all buttons/axes of this gamepad.
*
* @method Phaser.SinglePad#reset
*/
reset: function () {
for (var j = 0; j < this._axes.length; j++)
{
this._axes[j] = 0;
}
}
};
Phaser.SinglePad.prototype.constructor = Phaser.SinglePad;
</pre>
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