phaser/src/input/Input.js

/**
* Phaser.Input
*
* A game specific Input manager that looks after the mouse, keyboard and touch objects.
* This is updated by the core game loop.
*/
Phaser.Input = function (game) {

	this.game = game;

    // this.inputObjects = [];
    // this.totalTrackedObjects = 0;
	
};

Phaser.Input.MOUSE_OVERRIDES_TOUCH = 0;
Phaser.Input.TOUCH_OVERRIDES_MOUSE = 1;
Phaser.Input.MOUSE_TOUCH_COMBINE = 2;

Phaser.Input.prototype = {

    game: null,

    /**
    * How often should the input pointers be checked for updates?
    * A value of 0 means every single frame (60fps), a value of 1 means every other frame (30fps) and so on.
    * @type {number}
    */
    pollRate: 0,
    _pollCounter: 0,

    /**
    * A vector object representing the previous position of the Pointer.
    * @property vector
    * @type {Vec2}
    **/
    _oldPosition: null,

    /**
    * X coordinate of the most recent Pointer event
    * @type {Number}
    * @private
    */
    _x: 0,

    /**
    * X coordinate of the most recent Pointer event
    * @type {Number}
    * @private
    */
    _y: 0,

    /**
    * You can disable all Input by setting Input.disabled: true. While set all new input related events will be ignored.
    * If you need to disable just one type of input, for example mouse, use Input.mouse.disabled: true instead
    * @type {bool}
    */
    disabled: false,

    /**
    * Controls the expected behaviour when using a mouse and touch together on a multi-input device
    */
    multiInputOverride: Phaser.Input.MOUSE_TOUCH_COMBINE,

    /**
    * A vector object representing the current position of the Pointer.
    * @property vector
    * @type {Vec2}
    **/
    position: null,

    /**
    * A vector object representing the speed of the Pointer. Only really useful in single Pointer games,
    * otherwise see the Pointer objects directly.
    * @property vector
    * @type {Vec2}
    **/
    speed: null,

    /**
    * A Circle object centered on the x/y screen coordinates of the Input.
    * Default size of 44px (Apples recommended "finger tip" size) but can be changed to anything
    * @property circle
    * @type {Circle}
    **/
    circle: null,

    /**
    * The scale by which all input coordinates are multiplied, calculated by the StageScaleMode.
    * In an un-scaled game the values will be x: 1 and y: 1.
    * @type {Vec2}
    */
    scale: null,

    /**
    * The maximum number of Pointers allowed to be active at any one time.
    * For lots of games it's useful to set this to 1
    * @type {Number}
    */
    maxPointers: 10,

    /**
    * The current number of active Pointers.
    * @type {Number}
    */
    currentPointers: 0,

    /**
    * The number of milliseconds that the Pointer has to be pressed down and then released to be considered a tap or click
    * @property tapRate
    * @type {Number}
    **/
    tapRate: 200,

    /**
    * The number of milliseconds between taps of the same Pointer for it to be considered a double tap / click
    * @property doubleTapRate
    * @type {Number}
    **/
    doubleTapRate: 300,

    /**
    * The number of milliseconds that the Pointer has to be pressed down for it to fire a onHold event
    * @property holdRate
    * @type {Number}
    **/
    holdRate: 2000,

    /**
    * The number of milliseconds below which the Pointer is considered justPressed
    * @property justPressedRate
    * @type {Number}
    **/
    justPressedRate: 200,

    /**
    * The number of milliseconds below which the Pointer is considered justReleased
    * @property justReleasedRate
    * @type {Number}
    **/
    justReleasedRate: 200,

    /**
    * Sets if the Pointer objects should record a history of x/y coordinates they have passed through.
    * The history is cleared each time the Pointer is pressed down.
    * The history is updated at the rate specified in Input.pollRate
    * @property recordPointerHistory
    * @type {bool}
    **/
    recordPointerHistory: false,

    /**
    * The rate in milliseconds at which the Pointer objects should update their tracking history
    * @property recordRate
    * @type {Number}
    */
    recordRate: 100,

    /**
    * The total number of entries that can be recorded into the Pointer objects tracking history.
    * If the Pointer is tracking one event every 100ms, then a trackLimit of 100 would store the last 10 seconds worth of history.
    * @property recordLimit
    * @type {Number}
    */
    recordLimit: 100,

    /**
    * A Pointer object
    * @property pointer1
    * @type {Pointer}
    **/
    pointer1: null,

    /**
    * A Pointer object
    * @property pointer2
    * @type {Pointer}
    **/
    pointer2: null,

    /**
    * A Pointer object
    * @property pointer3
    * @type {Pointer}
    **/
    pointer3: null,

    /**
    * A Pointer object
    * @property pointer4
    * @type {Pointer}
    **/
    pointer4: null,

    /**
    * A Pointer object
    * @property pointer5
    * @type {Pointer}
    **/
    pointer5: null,

    /**
    * A Pointer object
    * @property pointer6
    * @type {Pointer}
    **/
    pointer6: null,

    /**
    * A Pointer object
    * @property pointer7
    * @type {Pointer}
    **/
    pointer7: null,

    /**
    * A Pointer object
    * @property pointer8
    * @type {Pointer}
    **/
    pointer8: null,

    /**
    * A Pointer object
    * @property pointer9
    * @type {Pointer}
    **/
    pointer9: null,

    /**
    * A Pointer object
    * @property pointer10
    * @type {Pointer}
    **/
    pointer10: null,

    /**
    * The most recently active Pointer object.
    * When you've limited max pointers to 1 this will accurately be either the first finger touched or mouse.
    * @property activePointer
    * @type {Pointer}
    **/
    activePointer: null,

    mousePointer: null,
    mouse: null,
    keyboard: null,
    touch: null,
    mspointer: null,

    onDown: null,
    onUp: null,
    onTap: null,
    onHold: null,

    //  A linked list of interactive objects, the InputHandler components (belong to Sprites) register themselves with this
    interactiveItems: new Phaser.LinkedList(),

	/**
    * Starts the Input Manager running
    * @method start
    **/
    boot: function () {

	    this.mousePointer = new Phaser.Pointer(this.game, 0);
	    this.pointer1 = new Phaser.Pointer(this.game, 1);
	    this.pointer2 = new Phaser.Pointer(this.game, 2);

	    this.mouse = new Phaser.Mouse(this.game);
	    this.keyboard = new Phaser.Keyboard(this.game);
	    this.touch = new Phaser.Touch(this.game);
	    this.mspointer = new Phaser.MSPointer(this.game);

	    this.onDown = new Phaser.Signal();
	    this.onUp = new Phaser.Signal();
	    this.onTap = new Phaser.Signal();
	    this.onHold = new Phaser.Signal();

	    this.scale = new Phaser.Point(1, 1);
	    this.speed = new Phaser.Point();
	    this.position = new Phaser.Point();
	    this._oldPosition = new Phaser.Point();

	    this.circle = new Phaser.Circle(0, 0, 44);

	    this.activePointer = this.mousePointer;
	    this.currentPointers = 0;

	    // this.hitCanvas = document.createElement('canvas');
	    // this.hitCanvas.width = 1;
	    // this.hitCanvas.height = 1;
	    // this.hitContext = this.hitCanvas.getContext('2d');

        this.mouse.start();
        this.keyboard.start();
        this.touch.start();
        this.mspointer.start();
        this.mousePointer.active = true;

    },

	/**
    * Add a new Pointer object to the Input Manager. By default Input creates 2 pointer objects for you. If you need more
    * use this to create a new one, up to a maximum of 10.
    * @method addPointer
    * @return {Pointer} A reference to the new Pointer object
    **/
    addPointer: function () {

        var next = 0;

        for (var i = 10; i > 0; i--)
        {
            if (this['pointer' + i] === null)
            {
                next = i;
            }
        }

        if (next == 0)
        {
            console.warn("You can only have 10 Pointer objects");
            return null;
        }
        else
        {
            this['pointer' + next] = new Phaser.Pointer(this.game, next);
            return this['pointer' + next];
        }

    },

	/**
    * Updates the Input Manager. Called by the core Game loop.
    * @method update
    **/
    update: function () {

        if (this.pollRate > 0 && this._pollCounter < this.pollRate)
        {
            this._pollCounter++;
            return;
        }

        this.speed.x = this.position.x - this._oldPosition.x;
        this.speed.y = this.position.y - this._oldPosition.y;

        this._oldPosition.copyFrom(this.position);
        this.mousePointer.update();

        this.pointer1.update();
        this.pointer2.update();

        if (this.pointer3) { this.pointer3.update(); }
        if (this.pointer4) { this.pointer4.update(); }
        if (this.pointer5) { this.pointer5.update(); }
        if (this.pointer6) { this.pointer6.update(); }
        if (this.pointer7) { this.pointer7.update(); }
        if (this.pointer8) { this.pointer8.update(); }
        if (this.pointer9) { this.pointer9.update(); }
        if (this.pointer10) { this.pointer10.update(); }

        this._pollCounter = 0;
    },

	/**
    * Reset all of the Pointers and Input states
    * @method reset
    * @param hard {bool} A soft reset (hard = false) won't reset any signals that might be bound. A hard reset will.
    **/
    reset: function (hard) {

        hard = hard || false;

        this.keyboard.reset();
        this.mousePointer.reset();

        for (var i = 1; i <= 10; i++)
        {
            if (this['pointer' + i])
            {
                this['pointer' + i].reset();
            }
        }

        this.currentPointers = 0;
        // this.game.stage.canvas.style.cursor = "default";

        if (hard == true)
        {
            this.onDown.dispose();
            this.onUp.dispose();
            this.onTap.dispose();
            this.onHold.dispose();
            this.onDown = new Phaser.Signal();
            this.onUp = new Phaser.Signal();
            this.onTap = new Phaser.Signal();
            this.onHold = new Phaser.Signal();

            for (var i = 0; i < this.totalTrackedObjects; i++)
            {
                if (this.inputObjects[i] && this.inputObjects[i].input)
                {
                    this.inputObjects[i].input.reset();
                }
            }

            this.inputObjects.length = 0;
            this.totalTrackedObjects = 0;
        }

        this._pollCounter = 0;

    },

    resetSpeed: function (x, y) {

        this._oldPosition.setTo(x, y);
        this.speed.setTo(0, 0);

    },

	/**
    * Find the first free Pointer object and start it, passing in the event data.
    * @method startPointer
    * @param {Any} event The event data from the Touch event
    * @return {Pointer} The Pointer object that was started or null if no Pointer object is available
    **/
    startPointer: function (event) {

        if (this.maxPointers < 10 && this.totalActivePointers == this.maxPointers)
        {
            return null;
        }

        if (this.pointer1.active == false)
        {
            return this.pointer1.start(event);
        }
        else if (this.pointer2.active == false)
        {
            return this.pointer2.start(event);
        }
        else
        {
            for (var i = 3; i <= 10; i++)
            {
                if (this['pointer' + i] && this['pointer' + i].active == false)
                {
                    return this['pointer' + i].start(event);
                }
            }
        }

        return null;

    },

	/**
    * Updates the matching Pointer object, passing in the event data.
    * @method updatePointer
    * @param {Any} event The event data from the Touch event
    * @return {Pointer} The Pointer object that was updated or null if no Pointer object is available
    **/
    updatePointer: function (event) {

        if (this.pointer1.active && this.pointer1.identifier == event.identifier)
        {
            return this.pointer1.move(event);
        }
        else if(this.pointer2.active && this.pointer2.identifier == event.identifier)
        {
            return this.pointer2.move(event);
        }
        else
        {
            for (var i = 3; i <= 10; i++)
            {
                if (this['pointer' + i] && this['pointer' + i].active && this['pointer' + i].identifier == event.identifier)
                {
                    return this['pointer' + i].move(event);
                }
            }
        }

        return null;

    },

	/**
    * Stops the matching Pointer object, passing in the event data.
    * @method stopPointer
    * @param {Any} event The event data from the Touch event
    * @return {Pointer} The Pointer object that was stopped or null if no Pointer object is available
    **/
    stopPointer: function (event) {

        if (this.pointer1.active && this.pointer1.identifier == event.identifier)
        {
            return this.pointer1.stop(event);
        }
        else if(this.pointer2.active && this.pointer2.identifier == event.identifier)
        {
            return this.pointer2.stop(event);
        }
        else
        {
            for (var i = 3; i <= 10; i++)
            {
                if (this['pointer' + i] && this['pointer' + i].active && this['pointer' + i].identifier == event.identifier)
                {
                    return this['pointer' + i].stop(event);
                }
            }
        }

        return null;

    },

	/**
    * Get the next Pointer object whos active property matches the given state
    * @method getPointer
    * @param {bool} state The state the Pointer should be in (false for inactive, true for active)
    * @return {Pointer} A Pointer object or null if no Pointer object matches the requested state.
    **/
    getPointer: function (state) {

        state = state || false;

        if (this.pointer1.active == state)
        {
            return this.pointer1;
        }
        else if(this.pointer2.active == state)
        {
            return this.pointer2;
        }
        else
        {
            for (var i = 3; i <= 10; i++)
            {
                if (this['pointer' + i] && this['pointer' + i].active == state)
                {
                    return this['pointer' + i];
                }
            }
        }

        return null;

    },

	/**
    * Get the Pointer object whos identified property matches the given identifier value
    * @method getPointerFromIdentifier
    * @param {Number} identifier The Pointer.identifier value to search for
    * @return {Pointer} A Pointer object or null if no Pointer object matches the requested identifier.
    **/
    getPointerFromIdentifier: function (identifier) {

        if (this.pointer1.identifier == identifier)
        {
            return this.pointer1;
        }
        else if(this.pointer2.identifier == identifier)
        {
            return this.pointer2;
        }
        else
        {
            for (var i = 3; i <= 10; i++)
            {
                if (this['pointer' + i] && this['pointer' + i].identifier == identifier)
                {
                    return this['pointer' + i];
                }
            }
        }

        return null;

    },

	/**
    * Get the distance between two Pointer objects
    * @method getDistance
    * @param {Pointer} pointer1
    * @param {Pointer} pointer2
    **/
    getDistance: function (pointer1, pointer2) {
        // return Phaser.Vec2Utils.distance(pointer1.position, pointer2.position);
    },

	/**
    * Get the angle between two Pointer objects
    * @method getAngle
    * @param {Pointer} pointer1
    * @param {Pointer} pointer2
    **/
    getAngle: function (pointer1, pointer2) {
        // return Phaser.Vec2Utils.angle(pointer1.position, pointer2.position);
    }

};

//	Getters / Setters

Object.defineProperty(Phaser.Input.prototype, "x", {

	/**
    * The X coordinate of the most recently active pointer.
    * This value takes game scaling into account automatically. See Pointer.screenX/clientX for source values.
    * @property x
    * @type {Number}
    **/
    get: function () {
        return this._x;
    },

    set: function (value) {
        this._x = Math.floor(value);
    },

    enumerable: true,
    configurable: true
});

Object.defineProperty(Phaser.Input.prototype, "y", {
    
	/**
    * The Y coordinate of the most recently active pointer.
    * This value takes game scaling into account automatically. See Pointer.screenY/clientY for source values.
    * @property y
    * @type {Number}
    **/
    get: function () {
        return this._y;
    },

    set: function (value) {
        this._y = Math.floor(value);
    },

    enumerable: true,
    configurable: true
});

Object.defineProperty(Phaser.Input.prototype, "pollLocked", {

    get: function () {
        return (this.pollRate > 0 && this._pollCounter < this.pollRate);
    },

    enumerable: true,
    configurable: true
});

Object.defineProperty(Phaser.Input.prototype, "totalInactivePointers", {

	/**
    * Get the total number of inactive Pointers
    * @method totalInactivePointers
    * @return {Number} The number of Pointers currently inactive
    **/
    get: function () {
        return 10 - this.currentPointers;
    },

    enumerable: true,
    configurable: true
});

Object.defineProperty(Phaser.Input.prototype, "totalActivePointers", {
    
	/**
    * Recalculates the total number of active Pointers
    * @method totalActivePointers
    * @return {Number} The number of Pointers currently active
    **/
    get: function () {

        this.currentPointers = 0;

        for (var i = 1; i <= 10; i++)
        {
            if (this['pointer' + i] && this['pointer' + i].active)
            {
                this.currentPointers++;
            }
        }

        return this.currentPointers;

    },

    enumerable: true,
    configurable: true
});

Object.defineProperty(Phaser.Input.prototype, "worldX", {

    get: function () {
		return this.game.camera.view.x + this.x;
    },

    enumerable: true,
    configurable: true
});

Object.defineProperty(Phaser.Input.prototype, "worldY", {

    get: function () {
		return this.game.camera.view.y + this.y;
    },

    enumerable: true,
    configurable: true
});