/**
* @author Richard Davey <rich@photonstorm.com>
* @author @karlmacklin <tacklemcclean@gmail.com>
* @copyright 2015 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* DeviceButtons belong to both `Phaser.Pointer` and `Phaser.SinglePad` (Gamepad) instances.
*
* For Pointers they represent the various buttons that can exist on mice and pens, such as the left button, right button,
* middle button and advanced buttons like back and forward.
*
* Access them via `Pointer.leftbutton`, `Pointer.rightButton` and so on.
*
* On Gamepads they represent all buttons on the pad: from shoulder buttons to action buttons.
*
* At the time of writing this there are device limitations you should be aware of:
*
* - On Windows, if you install a mouse driver, and its utility software allows you to customize button actions
* (e.g., IntelliPoint and SetPoint), the middle (wheel) button, the 4th button, and the 5th button might not be set,
* even when they are pressed.
* - On Linux (GTK), the 4th button and the 5th button are not supported.
* - On Mac OS X 10.5 there is no platform API for implementing any advanced buttons.
*
* @class Phaser.DeviceButton
* @constructor
* @param {Phaser.Pointer|Phaser.SinglePad} parent - A reference to the parent of this button. Either a Pointer or a Gamepad.
* @param {number} buttonCode - The button code this DeviceButton is responsible for.
*/
Phaser.DeviceButton = function (parent, buttonCode) {
/**
* @property {Phaser.Pointer|Phaser.SinglePad} parent - A reference to the Pointer or Gamepad that owns this button.
*/
this.parent = parent;
/**
* @property {Phaser.Game} game - A reference to the currently running game.
*/
this.game = parent.game;
/**
* @property {object} event - The DOM event that caused the change in button state.
* @default
*/
this.event = null;
/**
* @property {boolean} isDown - The "down" state of the button.
* @default
*/
this.isDown = false;
/**
* @property {boolean} isUp - The "up" state of the button.
* @default
*/
this.isUp = true;
/**
* @property {number} timeDown - The timestamp when the button was last pressed down.
* @default
*/
this.timeDown = 0;
/**
* If the button is down this value holds the duration of that button press and is constantly updated.
* If the button is up it holds the duration of the previous down session.
* The value is stored in milliseconds.
* @property {number} duration
* @default
*/
this.duration = 0;
/**
* @property {number} timeUp - The timestamp when the button was last released.
* @default
*/
this.timeUp = 0;
/**
* Gamepad only.
* If a button is held down this holds down the number of times the button has 'repeated'.
* @property {number} repeats
* @default
*/
this.repeats = 0;
/**
* True if the alt key was held down when this button was last pressed or released.
* Not supported on Gamepads.
* @property {boolean} altKey
* @default
*/
this.altKey = false;
/**
* True if the shift key was held down when this button was last pressed or released.
* Not supported on Gamepads.
* @property {boolean} shiftKey
* @default
*/
this.shiftKey = false;
/**
* True if the control key was held down when this button was last pressed or released.
* Not supported on Gamepads.
* @property {boolean} ctrlKey
* @default
*/
this.ctrlKey = false;
/**
* @property {number} value - Button value. Mainly useful for checking analog buttons (like shoulder triggers) on Gamepads.
* @default
*/
this.value = 0;
/**
* @property {number} buttonCode - The buttoncode of this button if a Gamepad, or the DOM button event value if a Pointer.
*/
this.buttonCode = buttonCode;
/**
* This Signal is dispatched every time this DeviceButton is pressed down.
* It is only dispatched once (until the button is released again).
* When dispatched it sends 2 arguments: A reference to this DeviceButton and the value of the button.
* @property {Phaser.Signal} onDown
*/
this.onDown = new Phaser.Signal();
/**
* This Signal is dispatched every time this DeviceButton is released from a down state.
* It is only dispatched once (until the button is pressed again).
* When dispatched it sends 2 arguments: A reference to this DeviceButton and the value of the button.
* @property {Phaser.Signal} onUp
*/
this.onUp = new Phaser.Signal();
/**
* Gamepad only.
* This Signal is dispatched every time this DeviceButton changes floating value (between, but not exactly, 0 and 1).
* When dispatched it sends 2 arguments: A reference to this DeviceButton and the value of the button.
* @property {Phaser.Signal} onFloat
*/
this.onFloat = new Phaser.Signal();
};
Phaser.DeviceButton.prototype = {
/**
* Called automatically by Phaser.Pointer and Phaser.SinglePad.
* Handles the button down state.
*
* @method Phaser.DeviceButton#start
* @protected
* @param {object} [event] - The DOM event that triggered the button change.
* @param {number} [value] - The button value. Only get for Gamepads.
*/
start: function (event, value) {
if (this.isDown)
{
return;
}
this.isDown = true;
this.isUp = false;
this.timeDown = this.game.time.time;
this.duration = 0;
this.repeats = 0;
this.event = event;
this.value = value;
this.altKey = event.altKey;
this.shiftKey = event.shiftKey;
this.ctrlKey = event.ctrlKey;
this.onDown.dispatch(this, value);
},
/**
* Called automatically by Phaser.Pointer and Phaser.SinglePad.
* Handles the button up state.
*
* @method Phaser.DeviceButton#stop
* @protected
* @param {object} [event] - The DOM event that triggered the button change.
* @param {number} [value] - The button value. Only get for Gamepads.
*/
stop: function (event, value) {
if (this.isUp)
{
return;
}
this.isDown = false;
this.isUp = true;
this.timeUp = this.game.time.time;
this.event = event;
this.value = value;
this.altKey = event.altKey;
this.shiftKey = event.shiftKey;
this.ctrlKey = event.ctrlKey;
this.onUp.dispatch(this, value);
},
/**
* Called automatically by Phaser.SinglePad.
*
* @method Phaser.DeviceButton#padFloat
* @protected
* @param {number} value - Button value
*/
padFloat: function (value) {
this.value = value;
this.onFloat.dispatch(this, value);
},
/**
* Returns the "just pressed" state of this button.
* Just pressed is considered true if the button was pressed down within the duration given (default 250ms).
*
* @method Phaser.DeviceButton#justPressed
* @param {number} [duration=250] - The duration in ms below which the button is considered as being just pressed.
* @return {boolean} True if the button is just pressed otherwise false.
*/
justPressed: function (duration) {
duration = duration || 250;
return (this.isDown && (this.timeDown + duration) > this.game.time.time);
},
/**
* Returns the "just released" state of this button.
* Just released is considered as being true if the button was released within the duration given (default 250ms).
*
* @method Phaser.DeviceButton#justReleased
* @param {number} [duration=250] - The duration in ms below which the button is considered as being just released.
* @return {boolean} True if the button is just released otherwise false.
*/
justReleased: function (duration) {
duration = duration || 250;
return (this.isUp && (this.timeUp + duration) > this.game.time.time);
},
/**
* Resets this DeviceButton, changing it to an isUp state and resetting the duration and repeats counters.
*
* @method Phaser.DeviceButton#reset
*/
reset: function () {
this.isDown = false;
this.isUp = true;
this.timeDown = this.game.time.time;
this.duration = 0;
this.repeats = 0;
this.altKey = false;
this.shiftKey = false;
this.ctrlKey = false;
},
/**
* Destroys this DeviceButton, this disposes of the onDown, onUp and onFloat signals
* and clears the parent and game references.
*
* @method Phaser.DeviceButton#destroy
*/
destroy: function () {
this.onDown.dispose();
this.onUp.dispose();
this.onFloat.dispose();
this.parent = null;
this.game = null;
}
};
Phaser.DeviceButton.prototype.constructor = Phaser.DeviceButton;
/**
* How long the button has been held down.
* If not currently down it returns -1.
*
* @name Phaser.DeviceButton#duration
* @property {number} duration
* @readonly
*/
Object.defineProperty(Phaser.DeviceButton.prototype, "duration", {
get: function () {
if (this.isUp)
{
return -1;
}
return this.game.time.time - this.timeDown;
}
});
