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< h1 class = "page-title" > Source: input/InputHandler.js< / h1 >
< section >
< article >
< pre class = "sunlight-highlight-javascript linenums" > /**
* @author Richard Davey < rich@photonstorm.com>
* @copyright 2013 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
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* The Input Handler is bound to a specific Sprite and is responsible for managing all Input events on that Sprite.
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* @class Phaser.InputHandler
* @constructor
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* @param {Phaser.Sprite} sprite - The Sprite object to which this Input Handler belongs.
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*/
Phaser.InputHandler = function (sprite) {
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/**
* @property {Phaser.Sprite} sprite - The Sprite object to which this Input Handler belongs.
*/
this.sprite = sprite;
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/**
* @property {Phaser.Game} game - A reference to the currently running game.
*/
this.game = sprite.game;
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/**
* @property {boolean} enabled - If enabled the Input Handler will process input requests and monitor pointer activity.
* @default
*/
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this.enabled = false;
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/**
* @property {Description} parent - Description.
* @default
*/
// this.parent = null;
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/**
* @property {Description} next - Linked List
* @default
*/
// this.next = null;
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/**
* @property {Description} prev - Description.
* @default
*/
// this.prev = null;
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/**
* @property {Description} last - Description.
* @default
*/
// this.last = this;
/**
* @property {Description} first - Description.
* @default
*/
// this.first = this;
/**
* @property {number} priorityID - The PriorityID controls which Sprite receives an Input event first if they should overlap.
* @default
*/
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this.priorityID = 0;
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/**
* @property {boolean} useHandCursor - On a desktop browser you can set the 'hand' cursor to appear when moving over the Sprite.
* @default
*/
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this.useHandCursor = false;
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/**
* @property {boolean} isDragged - true if the Sprite is being currently dragged.
* @default
*/
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this.isDragged = false;
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/**
* @property {boolean} allowHorizontalDrag - Controls if the Sprite is allowed to be dragged horizontally.
* @default
*/
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this.allowHorizontalDrag = true;
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/**
* @property {boolean} allowVerticalDrag - Controls if the Sprite is allowed to be dragged vertically.
* @default
*/
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this.allowVerticalDrag = true;
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/**
* @property {boolean} bringToTop - If true when this Sprite is clicked or dragged it will automatically be bought to the top of the Group it is within.
* @default
*/
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this.bringToTop = false;
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/**
* @property {Phaser.Point} snapOffset - A Point object that contains by how far the Sprite snap is offset.
* @default
*/
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this.snapOffset = null;
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/**
* @property {boolean} snapOnDrag - When the Sprite is dragged this controls if the center of the Sprite will snap to the pointer on drag or not.
* @default
*/
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this.snapOnDrag = false;
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/**
* @property {boolean} snapOnRelease - When the Sprite is dragged this controls if the Sprite will be snapped on release.
* @default
*/
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this.snapOnRelease = false;
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/**
* @property {number} snapX - When a Sprite has snapping enabled this holds the width of the snap grid.
* @default
*/
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this.snapX = 0;
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/**
* @property {number} snapY - When a Sprite has snapping enabled this holds the height of the snap grid.
* @default
*/
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this.snapY = 0;
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/**
* @property {number} pixelPerfect - Should we use pixel perfect hit detection? Warning: expensive. Only enable if you really need it!
* @default
*/
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this.pixelPerfect = false;
/**
* @property {number} pixelPerfectAlpha - The alpha tolerance threshold. If the alpha value of the pixel matches or is above this value, it's considered a hit.
* @default
*/
this.pixelPerfectAlpha = 255;
/**
* @property {boolean} draggable - Is this sprite allowed to be dragged by the mouse? true = yes, false = no
* @default
*/
this.draggable = false;
/**
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* @property {Phaser.Rectangle} boundsRect - A region of the game world within which the sprite is restricted during drag.
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* @default
*/
this.boundsRect = null;
/**
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* @property {Phaser.Sprite} boundsSprite - A Sprite the bounds of which this sprite is restricted during drag.
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* @default
*/
this.boundsSprite = null;
/**
* If this object is set to consume the pointer event then it will stop all propogation from this object on.
* For example if you had a stack of 6 sprites with the same priority IDs and one consumed the event, none of the others would receive it.
* @property {boolean} consumePointerEvent
* @default
*/
this.consumePointerEvent = false;
/**
* @property {Phaser.Point} _tempPoint - Description.
* @private
*/
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this._tempPoint = new Phaser.Point();
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this._pointerData = [];
this._pointerData.push({
id: 0,
x: 0,
y: 0,
isDown: false,
isUp: false,
isOver: false,
isOut: false,
timeOver: 0,
timeOut: 0,
timeDown: 0,
timeUp: 0,
downDuration: 0,
isDragged: false
});
};
Phaser.InputHandler.prototype = {
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/**
* Starts the Input Handler running. This is called automatically when you enable input on a Sprite, or can be called directly if you need to set a specific priority.
* @method Phaser.InputHandler#start
* @param {number} priority - Higher priority sprites take click priority over low-priority sprites when they are stacked on-top of each other.
* @param {boolean} useHandCursor - If true the Sprite will show the hand cursor on mouse-over (doesn't apply to mobile browsers)
* @return {Phaser.Sprite} The Sprite object to which the Input Handler is bound.
*/
start: function (priority, useHandCursor) {
console.log('InputHandler start');
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priority = priority || 0;
if (typeof useHandCursor == 'undefined') { useHandCursor = false; }
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// Turning on
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if (this.enabled === false)
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{
// Register, etc
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this.game.input.interactiveItems.add(this);
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this.useHandCursor = useHandCursor;
this.priorityID = priority;
for (var i = 0; i < 10; i++)
{
this._pointerData[i] = {
id: i,
x: 0,
y: 0,
isDown: false,
isUp: false,
isOver: false,
isOut: false,
timeOver: 0,
timeOut: 0,
timeDown: 0,
timeUp: 0,
downDuration: 0,
isDragged: false
};
}
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this.snapOffset = new Phaser.Point();
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this.enabled = true;
// Create the signals the Input component will emit
if (this.sprite.events & & this.sprite.events.onInputOver == null)
{
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this.sprite.events.onInputOver = new Phaser.Signal();
this.sprite.events.onInputOut = new Phaser.Signal();
this.sprite.events.onInputDown = new Phaser.Signal();
this.sprite.events.onInputUp = new Phaser.Signal();
this.sprite.events.onDragStart = new Phaser.Signal();
this.sprite.events.onDragStop = new Phaser.Signal();
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}
}
return this.sprite;
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},
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/**
* Resets the Input Handler and disables it.
* @method Phaser.InputHandler#reset
*/
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reset: function () {
this.enabled = false;
for (var i = 0; i < 10; i++)
{
this._pointerData[i] = {
id: i,
x: 0,
y: 0,
isDown: false,
isUp: false,
isOver: false,
isOut: false,
timeOver: 0,
timeOut: 0,
timeDown: 0,
timeUp: 0,
downDuration: 0,
isDragged: false
};
}
},
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/**
* Stops the Input Handler from running.
* @method Phaser.InputHandler#stop
*/
stop: function () {
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// Turning off
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if (this.enabled === false)
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{
return;
}
else
{
// De-register, etc
this.enabled = false;
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this.game.input.interactiveItems.remove(this);
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}
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},
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/**
* Clean up memory.
* @method Phaser.InputHandler#destroy
*/
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destroy: function () {
if (this.enabled)
{
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this.enabled = false;
this.game.input.interactiveItems.remove(this);
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this.stop();
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this.sprite = null;
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}
},
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/**
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* The x coordinate of the Input pointer, relative to the top-left of the parent Sprite.
* This value is only set when the pointer is over this Sprite.
* @method Phaser.InputHandler#pointerX
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* @param {Phaser.Pointer} pointer
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* @return {number} The x coordinate of the Input pointer.
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*/
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pointerX: function (pointer) {
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pointer = pointer || 0;
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return this._pointerData[pointer].x;
},
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/**
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* The y coordinate of the Input pointer, relative to the top-left of the parent Sprite
* This value is only set when the pointer is over this Sprite.
* @method Phaser.InputHandler#pointerY
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* @param {Phaser.Pointer} pointer
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* @return {number} The y coordinate of the Input pointer.
*/
pointerY: function (pointer) {
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pointer = pointer || 0;
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return this._pointerData[pointer].y;
},
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/**
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* If the Pointer is touching the touchscreen, or the mouse button is held down, isDown is set to true.
* @method Phaser.InputHandler#pointerDown
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* @param {Phaser.Pointer} pointer
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* @return {boolean}
*/
pointerDown: function (pointer) {
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pointer = pointer || 0;
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return this._pointerData[pointer].isDown;
},
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/**
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* If the Pointer is not touching the touchscreen, or the mouse button is up, isUp is set to true
* @method Phaser.InputHandler#pointerUp
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* @param {Phaser.Pointer} pointer
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* @return {boolean}
*/
pointerUp: function (pointer) {
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pointer = pointer || 0;
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return this._pointerData[pointer].isUp;
},
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/**
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* A timestamp representing when the Pointer first touched the touchscreen.
* @method Phaser.InputHandler#pointerTimeDown
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* @param {Phaser.Pointer} pointer
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* @return {number}
*/
pointerTimeDown: function (pointer) {
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pointer = pointer || 0;
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return this._pointerData[pointer].timeDown;
},
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/**
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* A timestamp representing when the Pointer left the touchscreen.
* @method Phaser.InputHandler#pointerTimeUp
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* @param {Phaser.Pointer} pointer
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* @return {number}
*/
pointerTimeUp: function (pointer) {
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pointer = pointer || 0;
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return this._pointerData[pointer].timeUp;
},
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/**
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* Is the Pointer over this Sprite?
* @method Phaser.InputHandler#pointerOver
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* @param {number} [index] - The ID number of a Pointer to check. If you don't provide a number it will check all Pointers.
* @return {boolean} True if the given pointer (if a index was given, or any pointer if not) is over this object.
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*/
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pointerOver: function (index) {
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if (this.enabled)
{
if (typeof index === 'undefined')
{
for (var i = 0; i < 10; i++)
{
if (this._pointerData[i].isOver)
{
return true;
}
}
}
else
{
return this._pointerData[index].isOver;
}
}
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return false;
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},
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/**
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* Is the Pointer outside of this Sprite?
* @method Phaser.InputHandler#pointerOut
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* @param {number} [index] - The ID number of a Pointer to check. If you don't provide a number it will check all Pointers.
* @return {boolean} True if the given pointer (if a index was given, or any pointer if not) is out of this object.
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*/
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pointerOut: function (index) {
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if (this.enabled)
{
if (typeof index === 'undefined')
{
for (var i = 0; i < 10; i++)
{
if (this._pointerData[i].isOut)
{
return true;
}
}
}
else
{
return this._pointerData[index].isOut;
}
}
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return false;
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},
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/**
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* A timestamp representing when the Pointer first touched the touchscreen.
* @method Phaser.InputHandler#pointerTimeOver
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* @param {Phaser.Pointer} pointer
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* @return {number}
*/
pointerTimeOver: function (pointer) {
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pointer = pointer || 0;
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return this._pointerData[pointer].timeOver;
},
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/**
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* A timestamp representing when the Pointer left the touchscreen.
* @method Phaser.InputHandler#pointerTimeOut
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* @param {Phaser.Pointer} pointer
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* @return {number}
*/
pointerTimeOut: function (pointer) {
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pointer = pointer || 0;
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return this._pointerData[pointer].timeOut;
},
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/**
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* Is this sprite being dragged by the mouse or not?
* @method Phaser.InputHandler#pointerTimeOut
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* @param {Phaser.Pointer} pointer
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* @return {number}
*/
pointerDragged: function (pointer) {
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pointer = pointer || 0;
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return this._pointerData[pointer].isDragged;
},
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/**
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* Checks if the given pointer is over this Sprite.
* @method Phaser.InputHandler#checkPointerOver
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* @param {Phaser.Pointer} pointer
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* @return {boolean}
*/
checkPointerOver: function (pointer) {
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if (this.enabled === false || this.sprite.visible === false || (this.sprite.group & & this.sprite.group.visible === false))
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{
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return false;
}
this.sprite.getLocalUnmodifiedPosition(this._tempPoint, pointer.x, pointer.y);
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if (this._tempPoint.x >= 0 & & this._tempPoint.x < = this.sprite.currentFrame.width & & this._tempPoint.y >= 0 & & this._tempPoint.y < = this.sprite.currentFrame.height)
{
if (this.pixelPerfect)
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{
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return this.checkPixel(this._tempPoint.x, this._tempPoint.y);
}
else
{
return true;
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}
}
},
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/**
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* Runs a pixel perfect check against the given x/y coordinates of the Sprite this InputHandler is bound to.
* It compares the alpha value of the pixel and if >= InputHandler.pixelPerfectAlpha it returns true.
* @method Phaser.InputHandler#checkPixel
* @param {number} x - The x coordinate to check.
* @param {number} y - The y coordinate to check.
* @return {boolean} true if there is the alpha of the pixel is >= InputHandler.pixelPerfectAlpha
*/
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checkPixel: function (x, y) {
// Grab a pixel from our image into the hitCanvas and then test it
if (this.sprite.texture.baseTexture.source)
{
this.game.input.hitContext.clearRect(0, 0, 1, 1);
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x += this.sprite.texture.frame.x;
y += this.sprite.texture.frame.y;
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this.game.input.hitContext.drawImage(this.sprite.texture.baseTexture.source, x, y, 1, 1, 0, 0, 1, 1);
var rgb = this.game.input.hitContext.getImageData(0, 0, 1, 1);
if (rgb.data[3] >= this.pixelPerfectAlpha)
{
return true;
}
}
return false;
},
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/**
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* Update.
* @method Phaser.InputHandler#update
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* @param {Phaser.Pointer} pointer
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*/
update: function (pointer) {
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if (this.enabled === false || this.sprite.visible === false || (this.sprite.group & & this.sprite.group.visible === false))
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{
this._pointerOutHandler(pointer);
return false;
}
if (this.draggable & & this._draggedPointerID == pointer.id)
{
return this.updateDrag(pointer);
}
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else if (this._pointerData[pointer.id].isOver === true)
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{
if (this.checkPointerOver(pointer))
{
this._pointerData[pointer.id].x = pointer.x - this.sprite.x;
this._pointerData[pointer.id].y = pointer.y - this.sprite.y;
return true;
}
else
{
this._pointerOutHandler(pointer);
return false;
}
}
},
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/**
* Internal method handling the pointer over event.
* @method Phaser.InputHandler#_pointerOverHandler
* @private
* @param {Phaser.Pointer} pointer
*/
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_pointerOverHandler: function (pointer) {
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if (this._pointerData[pointer.id].isOver === false)
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{
this._pointerData[pointer.id].isOver = true;
this._pointerData[pointer.id].isOut = false;
this._pointerData[pointer.id].timeOver = this.game.time.now;
this._pointerData[pointer.id].x = pointer.x - this.sprite.x;
this._pointerData[pointer.id].y = pointer.y - this.sprite.y;
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if (this.useHandCursor & & this._pointerData[pointer.id].isDragged === false)
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{
this.game.stage.canvas.style.cursor = "pointer";
}
this.sprite.events.onInputOver.dispatch(this.sprite, pointer);
}
},
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/**
* Internal method handling the pointer out event.
* @method Phaser.InputHandler#_pointerOutHandler
* @private
* @param {Phaser.Pointer} pointer
*/
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_pointerOutHandler: function (pointer) {
this._pointerData[pointer.id].isOver = false;
this._pointerData[pointer.id].isOut = true;
this._pointerData[pointer.id].timeOut = this.game.time.now;
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if (this.useHandCursor & & this._pointerData[pointer.id].isDragged === false)
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{
this.game.stage.canvas.style.cursor = "default";
}
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if (this.sprite & & this.sprite.events)
{
this.sprite.events.onInputOut.dispatch(this.sprite, pointer);
}
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},
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/**
* Internal method handling the touched event.
* @method Phaser.InputHandler#_touchedHandler
* @private
* @param {Phaser.Pointer} pointer
*/
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_touchedHandler: function (pointer) {
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if (this._pointerData[pointer.id].isDown === false & & this._pointerData[pointer.id].isOver === true)
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{
this._pointerData[pointer.id].isDown = true;
this._pointerData[pointer.id].isUp = false;
this._pointerData[pointer.id].timeDown = this.game.time.now;
this.sprite.events.onInputDown.dispatch(this.sprite, pointer);
// Start drag
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if (this.draggable & & this.isDragged === false)
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{
this.startDrag(pointer);
}
if (this.bringToTop)
{
this.sprite.bringToTop();
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}
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}
// Consume the event?
return this.consumePointerEvent;
},
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/**
* Internal method handling the pointer released event.
* @method Phaser.InputHandler#_releasedHandler
* @private
* @param {Phaser.Pointer} pointer
*/
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_releasedHandler: function (pointer) {
// If was previously touched by this Pointer, check if still is AND still over this item
if (this._pointerData[pointer.id].isDown & & pointer.isUp)
{
this._pointerData[pointer.id].isDown = false;
this._pointerData[pointer.id].isUp = true;
this._pointerData[pointer.id].timeUp = this.game.time.now;
this._pointerData[pointer.id].downDuration = this._pointerData[pointer.id].timeUp - this._pointerData[pointer.id].timeDown;
// Only release the InputUp signal if the pointer is still over this sprite
if (this.checkPointerOver(pointer))
{
//console.log('releasedHandler: ' + Date.now());
this.sprite.events.onInputUp.dispatch(this.sprite, pointer);
}
else
{
// Pointer outside the sprite? Reset the cursor
if (this.useHandCursor)
{
this.game.stage.canvas.style.cursor = "default";
}
}
// Stop drag
if (this.draggable & & this.isDragged & & this._draggedPointerID == pointer.id)
{
this.stopDrag(pointer);
}
}
},
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/**
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* Updates the Pointer drag on this Sprite.
* @method Phaser.InputHandler#updateDrag
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* @param {Phaser.Pointer} pointer
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* @return {boolean}
*/
updateDrag: function (pointer) {
if (pointer.isUp)
{
this.stopDrag(pointer);
return false;
}
if (this.allowHorizontalDrag)
{
this.sprite.x = pointer.x + this._dragPoint.x + this.dragOffset.x;
}
if (this.allowVerticalDrag)
{
this.sprite.y = pointer.y + this._dragPoint.y + this.dragOffset.y;
}
if (this.boundsRect)
{
this.checkBoundsRect();
}
if (this.boundsSprite)
{
this.checkBoundsSprite();
}
if (this.snapOnDrag)
{
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this.sprite.x = Math.round(this.sprite.x / this.snapX) * this.snapX;
this.sprite.y = Math.round(this.sprite.y / this.snapY) * this.snapY;
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}
return true;
},
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/**
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* Returns true if the pointer has entered the Sprite within the specified delay time (defaults to 500ms, half a second)
* @method Phaser.InputHandler#justOver
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* @param {Phaser.Pointer} pointer
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* @param {number} delay - The time below which the pointer is considered as just over.
* @return {boolean}
*/
justOver: function (pointer, delay) {
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pointer = pointer || 0;
delay = delay || 500;
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return (this._pointerData[pointer].isOver & & this.overDuration(pointer) < delay);
},
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/**
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* Returns true if the pointer has left the Sprite within the specified delay time (defaults to 500ms, half a second)
* @method Phaser.InputHandler#justOut
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* @param {Phaser.Pointer} pointer
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* @param {number} delay - The time below which the pointer is considered as just out.
* @return {boolean}
*/
justOut: function (pointer, delay) {
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pointer = pointer || 0;
delay = delay || 500;
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return (this._pointerData[pointer].isOut & & (this.game.time.now - this._pointerData[pointer].timeOut < delay));
},
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/**
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* Returns true if the pointer has entered the Sprite within the specified delay time (defaults to 500ms, half a second)
* @method Phaser.InputHandler#justPressed
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* @param {Phaser.Pointer} pointer
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* @param {number} delay - The time below which the pointer is considered as just over.
* @return {boolean}
*/
justPressed: function (pointer, delay) {
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pointer = pointer || 0;
delay = delay || 500;
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return (this._pointerData[pointer].isDown & & this.downDuration(pointer) < delay);
},
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/**
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* Returns true if the pointer has left the Sprite within the specified delay time (defaults to 500ms, half a second)
* @method Phaser.InputHandler#justReleased
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* @param {Phaser.Pointer} pointer
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* @param {number} delay - The time below which the pointer is considered as just out.
* @return {boolean}
*/
justReleased: function (pointer, delay) {
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pointer = pointer || 0;
delay = delay || 500;
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return (this._pointerData[pointer].isUp & & (this.game.time.now - this._pointerData[pointer].timeUp < delay));
},
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/**
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* If the pointer is currently over this Sprite this returns how long it has been there for in milliseconds.
* @method Phaser.InputHandler#overDuration
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* @param {Phaser.Pointer} pointer
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* @return {number} The number of milliseconds the pointer has been over the Sprite, or -1 if not over.
*/
overDuration: function (pointer) {
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pointer = pointer || 0;
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if (this._pointerData[pointer].isOver)
{
return this.game.time.now - this._pointerData[pointer].timeOver;
}
return -1;
},
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/**
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* If the pointer is currently over this Sprite this returns how long it has been there for in milliseconds.
* @method Phaser.InputHandler#downDuration
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* @param {Phaser.Pointer} pointer
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* @return {number} The number of milliseconds the pointer has been pressed down on the Sprite, or -1 if not over.
*/
downDuration: function (pointer) {
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pointer = pointer || 0;
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if (this._pointerData[pointer].isDown)
{
return this.game.time.now - this._pointerData[pointer].timeDown;
}
return -1;
},
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/**
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* Make this Sprite draggable by the mouse. You can also optionally set mouseStartDragCallback and mouseStopDragCallback
* @method Phaser.InputHandler#enableDrag
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* @param {boolean} [lockCenter=false] - If false the Sprite will drag from where you click it minus the dragOffset. If true it will center itself to the tip of the mouse pointer.
* @param {boolean} [bringToTop=false] - If true the Sprite will be bought to the top of the rendering list in its current Group.
* @param {boolean} [pixelPerfect=false] - If true it will use a pixel perfect test to see if you clicked the Sprite. False uses the bounding box.
* @param {boolean} [alphaThreshold=255] - If using pixel perfect collision this specifies the alpha level from 0 to 255 above which a collision is processed.
* @param {Phaser.Rectangle} [boundsRect=null] - If you want to restrict the drag of this sprite to a specific Rectangle, pass the Phaser.Rectangle here, otherwise it's free to drag anywhere.
* @param {Phaser.Sprite} [boundsSprite=null] - If you want to restrict the drag of this sprite to within the bounding box of another sprite, pass it here.
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*/
enableDrag: function (lockCenter, bringToTop, pixelPerfect, alphaThreshold, boundsRect, boundsSprite) {
if (typeof lockCenter == 'undefined') { lockCenter = false; }
if (typeof bringToTop == 'undefined') { bringToTop = false; }
if (typeof pixelPerfect == 'undefined') { pixelPerfect = false; }
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if (typeof alphaThreshold == 'undefined') { alphaThreshold = 255; }
if (typeof boundsRect == 'undefined') { boundsRect = null; }
if (typeof boundsSprite == 'undefined') { boundsSprite = null; }
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this._dragPoint = new Phaser.Point();
this.draggable = true;
this.bringToTop = bringToTop;
this.dragOffset = new Phaser.Point();
this.dragFromCenter = lockCenter;
this.pixelPerfect = pixelPerfect;
this.pixelPerfectAlpha = alphaThreshold;
if (boundsRect)
{
this.boundsRect = boundsRect;
}
if (boundsSprite)
{
this.boundsSprite = boundsSprite;
}
},
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/**
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* Stops this sprite from being able to be dragged. If it is currently the target of an active drag it will be stopped immediately. Also disables any set callbacks.
* @method Phaser.InputHandler#disableDrag
*/
disableDrag: function () {
if (this._pointerData)
{
for (var i = 0; i < 10; i++)
{
this._pointerData[i].isDragged = false;
}
}
this.draggable = false;
this.isDragged = false;
this._draggedPointerID = -1;
},
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/**
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* Called by Pointer when drag starts on this Sprite. Should not usually be called directly.
* @method Phaser.InputHandler#startDrag
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* @param {Phaser.Pointer} pointer
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*/
startDrag: function (pointer) {
this.isDragged = true;
this._draggedPointerID = pointer.id;
this._pointerData[pointer.id].isDragged = true;
if (this.dragFromCenter)
{
this.sprite.centerOn(pointer.x, pointer.y);
this._dragPoint.setTo(this.sprite.x - pointer.x, this.sprite.y - pointer.y);
}
else
{
this._dragPoint.setTo(this.sprite.x - pointer.x, this.sprite.y - pointer.y);
}
this.updateDrag(pointer);
if (this.bringToTop)
{
this.sprite.bringToTop();
}
this.sprite.events.onDragStart.dispatch(this.sprite, pointer);
},
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/**
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* Called by Pointer when drag is stopped on this Sprite. Should not usually be called directly.
* @method Phaser.InputHandler#stopDrag
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* @param {Phaser.Pointer} pointer
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*/
stopDrag: function (pointer) {
this.isDragged = false;
this._draggedPointerID = -1;
this._pointerData[pointer.id].isDragged = false;
if (this.snapOnRelease)
{
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this.sprite.x = Math.round(this.sprite.x / this.snapX) * this.snapX;
this.sprite.y = Math.round(this.sprite.y / this.snapY) * this.snapY;
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}
this.sprite.events.onDragStop.dispatch(this.sprite, pointer);
this.sprite.events.onInputUp.dispatch(this.sprite, pointer);
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if (this.checkPointerOver(pointer) === false)
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{
this._pointerOutHandler(pointer);
}
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},
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/**
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* Restricts this sprite to drag movement only on the given axis. Note: If both are set to false the sprite will never move!
* @method Phaser.InputHandler#setDragLock
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* @param {boolean} [allowHorizontal=true] - To enable the sprite to be dragged horizontally set to true, otherwise false.
* @param {boolean} [allowVertical=true] - To enable the sprite to be dragged vertically set to true, otherwise false.
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*/
setDragLock: function (allowHorizontal, allowVertical) {
if (typeof allowHorizontal == 'undefined') { allowHorizontal = true; }
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if (typeof allowVertical == 'undefined') { allowVertical = true; }
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this.allowHorizontalDrag = allowHorizontal;
this.allowVerticalDrag = allowVertical;
},
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/**
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* Make this Sprite snap to the given grid either during drag or when it's released.
* For example 16x16 as the snapX and snapY would make the sprite snap to every 16 pixels.
* @method Phaser.InputHandler#enableSnap
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* @param {number} snapX - The width of the grid cell to snap to.
* @param {number} snapY - The height of the grid cell to snap to.
* @param {boolean} [onDrag=true] - If true the sprite will snap to the grid while being dragged.
* @param {boolean} [onRelease=false] - If true the sprite will snap to the grid when released.
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*/
enableSnap: function (snapX, snapY, onDrag, onRelease) {
if (typeof onDrag == 'undefined') { onDrag = true; }
if (typeof onRelease == 'undefined') { onRelease = false; }
this.snapX = snapX;
this.snapY = snapY;
this.snapOnDrag = onDrag;
this.snapOnRelease = onRelease;
},
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/**
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* Stops the sprite from snapping to a grid during drag or release.
* @method Phaser.InputHandler#disableSnap
*/
disableSnap: function () {
this.snapOnDrag = false;
this.snapOnRelease = false;
},
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/**
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* Bounds Rect check for the sprite drag
* @method Phaser.InputHandler#checkBoundsRect
*/
checkBoundsRect: function () {
if (this.sprite.x < this.boundsRect.left)
{
this.sprite.x = this.boundsRect.x;
}
else if ((this.sprite.x + this.sprite.width) > this.boundsRect.right)
{
this.sprite.x = this.boundsRect.right - this.sprite.width;
}
if (this.sprite.y < this.boundsRect.top)
{
this.sprite.y = this.boundsRect.top;
}
else if ((this.sprite.y + this.sprite.height) > this.boundsRect.bottom)
{
this.sprite.y = this.boundsRect.bottom - this.sprite.height;
}
},
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/**
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* Parent Sprite Bounds check for the sprite drag.
* @method Phaser.InputHandler#checkBoundsSprite
*/
checkBoundsSprite: function () {
if (this.sprite.x < this.boundsSprite.x)
{
this.sprite.x = this.boundsSprite.x;
}
else if ((this.sprite.x + this.sprite.width) > (this.boundsSprite.x + this.boundsSprite.width))
{
this.sprite.x = (this.boundsSprite.x + this.boundsSprite.width) - this.sprite.width;
}
if (this.sprite.y < this.boundsSprite.y)
{
this.sprite.y = this.boundsSprite.y;
}
else if ((this.sprite.y + this.sprite.height) > (this.boundsSprite.y + this.boundsSprite.height))
{
this.sprite.y = (this.boundsSprite.y + this.boundsSprite.height) - this.sprite.height;
}
}
};< / pre >
< / article >
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Phaser Copyright © 2012-2013 Photon Storm Ltd.
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Documentation generated by < a href = "https://github.com/jsdoc3/jsdoc" > JSDoc 3.3.0-dev< / a >
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on Thu Nov 28 2013 15:56:25 GMT-0000 (GMT) using the < a href = "https://github.com/terryweiss/docstrap" > DocStrap template< / a > .
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