phaser/src/gameobjects/Sprite.js

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/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2013 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
* @module Phaser.Sprite
*/
/**
* Create a new <code>Sprite</code>.
* @class Phaser.Sprite
* @classdesc Description of class.
* @constructor
* @param {Phaser.Game} game - Current game instance.
* @param {Description} x - Description.
* @param {Description} y - Description.
* @param {string} key - Description.
* @param {Description} frame - Description.
*/
Phaser.Sprite = function (game, x, y, key, frame) {
x = x || 0;
y = y || 0;
key = key || null;
frame = frame || null;
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/**
* @property {Phaser.Game} game - A reference to the currently running Game.
*/
this.game = game;
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/**
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* @property {boolean} exists - If exists = false then the Sprite isn't updated by the core game loop or physics subsystem at all.
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* @default
*/
this.exists = true;
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/**
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* @property {boolean} alive - This is a handy little var your game can use to determine if a sprite is alive or not, it doesn't effect rendering.
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* @default
*/
this.alive = true;
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/**
* @property {Description} group - Description.
* @default
*/
this.group = null;
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/**
* @property {string} name - The user defined name given to this Sprite.
* @default
*/
this.name = '';
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/**
* @property {Description} type - Description.
*/
this.type = Phaser.SPRITE;
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/**
* @property {number} renderOrderID - Description.
* @default
*/
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this.renderOrderID = -1;
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/**
* If you would like the Sprite to have a lifespan once 'born' you can set this to a positive value. Handy for particles, bullets, etc.
* The lifespan is decremented by game.time.elapsed each update, once it reaches zero the kill() function is called.
* @property {number} lifespan
* @default
*/
this.lifespan = 0;
/**
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* @property {Events} events - The Signals you can subscribe to that are dispatched when certain things happen on this Sprite or its components
*/
this.events = new Phaser.Events(this);
/**
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* @property {Phaser.AnimationManager} animations - This manages animations of the sprite. You can modify animations through it. (see Phaser.AnimationManager)
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*/
this.animations = new Phaser.AnimationManager(this);
/**
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* @property {InputHandler} input - The Input Handler Component.
*/
this.input = new Phaser.InputHandler(this);
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/**
* @property {Description} key - Description.
*/
this.key = key;
if (key instanceof Phaser.RenderTexture)
{
PIXI.Sprite.call(this, key);
this.currentFrame = this.game.cache.getTextureFrame(key.name);
}
else
{
if (key == null || this.game.cache.checkImageKey(key) == false)
{
key = '__default';
}
PIXI.Sprite.call(this, PIXI.TextureCache[key]);
if (this.game.cache.isSpriteSheet(key))
{
this.animations.loadFrameData(this.game.cache.getFrameData(key));
if (frame !== null)
{
if (typeof frame === 'string')
{
this.frameName = frame;
}
else
{
this.frame = frame;
}
}
}
else
{
this.currentFrame = this.game.cache.getFrame(key);
}
}
/**
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* The anchor sets the origin point of the texture.
* The default is 0,0 this means the textures origin is the top left
* Setting than anchor to 0.5,0.5 means the textures origin is centered
* Setting the anchor to 1,1 would mean the textures origin points will be the bottom right
*
* @property {Phaser.Point} anchor
*/
this.anchor = new Phaser.Point();
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/**
* @property {Description} _cropUUID - Description.
* @private
* @default
*/
this._cropUUID = null;
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/**
* @property {Description} _cropUUID - Description.
* @private
* @default
*/
this._cropRect = null;
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/**
* @property {number} x - Description.
*/
this.x = x;
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/**
* @property {number} y - Description.
*/
this.y = y;
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/**
* @property {Description} position - Description.
*/
this.position.x = x;
this.position.y = y;
/**
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* Should this Sprite be automatically culled if out of range of the camera?
* A culled sprite has its visible property set to 'false'.
* Note that this check doesn't look at this Sprites children, which may still be in camera range.
* So you should set autoCull to false if the Sprite will have children likely to still be in camera range.
*
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* @property {boolean} autoCull
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* @default
*/
this.autoCull = false;
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/**
* @property {Phaser.Point} scale - Replaces the PIXI.Point with a slightly more flexible one.
*/
this.scale = new Phaser.Point(1, 1);
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/**
* @property {Phaser.Point} scrollFactor - Influence of camera movement upon the position.
*/
this.scrollFactor = new Phaser.Point(1, 1);
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/**
* @property {Phaser.Point} _cache - A mini cache for storing all of the calculated values.
* @private
*/
this._cache = {
dirty: false,
// Transform cache
a00: 1, a01: 0, a02: x, a10: 0, a11: 1, a12: y, id: 1,
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// Input specific transform cache
i01: 0, i10: 0, idi: 1,
// Bounds check
left: null, right: null, top: null, bottom: null,
// The previous calculated position inc. camera x/y and scrollFactor
x: -1, y: -1,
// The actual scale values based on the worldTransform
scaleX: 1, scaleY: 1,
// The width/height of the image, based on the un-modified frame size multiplied by the final calculated scale size
width: this.currentFrame.sourceSizeW, height: this.currentFrame.sourceSizeH,
// The actual width/height of the image if from a trimmed atlas, multiplied by the final calculated scale size
halfWidth: Math.floor(this.currentFrame.sourceSizeW / 2), halfHeight: Math.floor(this.currentFrame.sourceSizeH / 2),
// The current frame details
frameID: this.currentFrame.uuid, frameWidth: this.currentFrame.width, frameHeight: this.currentFrame.height,
boundsX: 0, boundsY: 0,
// If this sprite visible to the camera (regardless of being set to visible or not)
cameraVisible: true
};
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/**
* @property {Phaser.Point} offset - Corner point defaults.
*/
this.offset = new Phaser.Point;
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/**
* @property {Phaser.Point} center - Description.
*/
this.center = new Phaser.Point(x + Math.floor(this._cache.width / 2), y + Math.floor(this._cache.height / 2));
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/**
* @property {Phaser.Point} topLeft - Description.
*/
this.topLeft = new Phaser.Point(x, y);
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/**
* @property {Phaser.Point} topRight - Description.
*/
this.topRight = new Phaser.Point(x + this._cache.width, y);
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/**
* @property {Phaser.Point} bottomRight - Description.
*/
this.bottomRight = new Phaser.Point(x + this._cache.width, y + this._cache.height);
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/**
* @property {Phaser.Point} bottomLeft - Description.
*/
this.bottomLeft = new Phaser.Point(x, y + this._cache.height);
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/**
* @property {Phaser.Rectangle} bounds - Description.
*/
this.bounds = new Phaser.Rectangle(x, y, this._cache.width, this._cache.height);
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/**
* @property {Phaser.Physics.Arcade.Body} body - Set-up the physics body.
*/
this.body = new Phaser.Physics.Arcade.Body(this);
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/**
* @property {Description} velocity - Description.
*/
this.velocity = this.body.velocity;
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/**
* @property {Description} acceleration - Description.
*/
this.acceleration = this.body.acceleration;
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/**
* @property {Description} inWorld - World bounds check.
*/
this.inWorld = Phaser.Rectangle.intersects(this.bounds, this.game.world.bounds);
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/**
* @property {number} inWorldThreshold - World bounds check.
* @default
*/
this.inWorldThreshold = 0;
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/**
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* @property {boolean} _outOfBoundsFired - Description.
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* @private
* @default
*/
this._outOfBoundsFired = false;
};
// Needed to keep the PIXI.Sprite constructor in the prototype chain (as the core pixi renderer uses an instanceof check sadly)
Phaser.Sprite.prototype = Object.create(PIXI.Sprite.prototype);
Phaser.Sprite.prototype.constructor = Phaser.Sprite;
/**
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* Automatically called by World.update. You can create your own update in Objects that extend Phaser.Sprite.
* @method Phaser.Sprite.prototype.preUpdate
*/
Phaser.Sprite.prototype.preUpdate = function() {
if (!this.exists)
{
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this.renderOrderID = -1;
return;
}
if (this.lifespan > 0)
{
this.lifespan -= this.game.time.elapsed;
if (this.lifespan <= 0)
{
this.kill();
return;
}
}
this._cache.dirty = false;
if (this.animations.update())
{
this._cache.dirty = true;
}
if (this.visible)
{
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this.renderOrderID = this.game.world.currentRenderOrderID++;
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}
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this.prevX = this.x;
this.prevY = this.y;
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// |a c tx|
// |b d ty|
// |0 0 1|
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// Only update the values we need
if (this.worldTransform[0] != this._cache.a00 || this.worldTransform[1] != this._cache.a01)
{
this._cache.a00 = this.worldTransform[0]; // scaleX a
this._cache.a01 = this.worldTransform[1]; // skewY c
this._cache.i01 = this.worldTransform[1]; // skewY c
this._cache.scaleX = Math.sqrt((this._cache.a00 * this._cache.a00) + (this._cache.a01 * this._cache.a01)); // round this off a bit?
this._cache.a01 *= -1;
this._cache.dirty = true;
}
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// Need to test, but probably highly unlikely that a scaleX would happen without effecting the Y skew
if (this.worldTransform[3] != this._cache.a10 || this.worldTransform[4] != this._cache.a11)
{
this._cache.a10 = this.worldTransform[3]; // skewX b
this._cache.i10 = this.worldTransform[3]; // skewX b
this._cache.a11 = this.worldTransform[4]; // scaleY d
this._cache.scaleY = Math.sqrt((this._cache.a10 * this._cache.a10) + (this._cache.a11 * this._cache.a11)); // round this off a bit?
this._cache.a10 *= -1;
this._cache.dirty = true;
}
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if (this.worldTransform[2] != this._cache.a02 || this.worldTransform[5] != this._cache.a12)
{
this._cache.a02 = this.worldTransform[2]; // translateX tx
this._cache.a12 = this.worldTransform[5]; // translateY ty
this._cache.dirty = true;
}
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// Frame updated?
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if (this.currentFrame && this.currentFrame.uuid != this._cache.frameID)
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{
this._cache.frameWidth = this.texture.frame.width;
this._cache.frameHeight = this.texture.frame.height;
this._cache.frameID = this.currentFrame.uuid;
this._cache.dirty = true;
}
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if (this._cache.dirty && this.currentFrame)
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{
this._cache.width = Math.floor(this.currentFrame.sourceSizeW * this._cache.scaleX);
this._cache.height = Math.floor(this.currentFrame.sourceSizeH * this._cache.scaleY);
this._cache.halfWidth = Math.floor(this._cache.width / 2);
this._cache.halfHeight = Math.floor(this._cache.height / 2);
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this._cache.id = 1 / (this._cache.a00 * this._cache.a11 + this._cache.a01 * -this._cache.a10);
this._cache.idi = 1 / (this._cache.a00 * this._cache.a11 + this._cache.i01 * -this._cache.i10);
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this.updateBounds();
}
// Re-run the camera visibility check
if (this._cache.dirty)
{
this._cache.cameraVisible = Phaser.Rectangle.intersects(this.game.world.camera.screenView, this.bounds, 0);
if (this.autoCull == true)
{
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// Won't get rendered but will still get its transform updated
this.renderable = this._cache.cameraVisible;
}
// Update our physics bounds
this.body.updateBounds(this.center.x, this.center.y, this._cache.scaleX, this._cache.scaleY);
}
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this.body.preUpdate();
}
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Phaser.Sprite.prototype.postUpdate = function() {
if (this.exists)
{
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// The sprite is positioned in this call, after taking into consideration motion updates and collision
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// this.body.postUpdate();
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// this._cache.x = this.x - (this.game.world.camera.x * this.scrollFactor.x);
// this._cache.y = this.y - (this.game.world.camera.y * this.scrollFactor.y);
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// if (this.position.x != this._cache.x || this.position.y != this._cache.y)
// {
// this.position.x = this._cache.x;
// this.position.y = this._cache.y;
// }
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}
}
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Phaser.Sprite.prototype.deltaAbsX = function () {
return (this.deltaX() > 0 ? this.deltaX() : -this.deltaX());
}
Phaser.Sprite.prototype.deltaAbsY = function () {
return (this.deltaY() > 0 ? this.deltaY() : -this.deltaY());
}
Phaser.Sprite.prototype.deltaX = function () {
return this.x - this.prevX;
}
Phaser.Sprite.prototype.deltaY = function () {
return this.y - this.prevY;
}
/**
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* Moves the sprite so its center is located on the given x and y coordinates.
* Doesn't change the origin of the sprite.
*
* @method Phaser.Sprite.prototype.centerOn
* @param {number} x - Description.
* @param {number} y - Description.
*/
Phaser.Sprite.prototype.centerOn = function(x, y) {
this.x = x + (this.x - this.center.x);
this.y = y + (this.y - this.center.y);
}
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/**
* Description.
*
* @method Phaser.Sprite.prototype.revive
*/
Phaser.Sprite.prototype.revive = function() {
this.alive = true;
this.exists = true;
this.visible = true;
this.events.onRevived.dispatch(this);
}
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/**
* Description.
*
* @method Phaser.Sprite.prototype.kill
*/
Phaser.Sprite.prototype.kill = function() {
this.alive = false;
this.exists = false;
this.visible = false;
this.events.onKilled.dispatch(this);
}
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/**
* Description.
*
* @method Phaser.Sprite.prototype.reset
*/
Phaser.Sprite.prototype.reset = function(x, y) {
this.x = x;
this.y = y;
this.position.x = this.x - (this.game.world.camera.x * this.scrollFactor.x);
this.position.y = this.y - (this.game.world.camera.y * this.scrollFactor.y);
this.alive = true;
this.exists = true;
this.visible = true;
this._outOfBoundsFired = false;
this.body.reset();
}
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/**
* Description.
*
* @method Phaser.Sprite.prototype.updateBounds
*/
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Phaser.Sprite.prototype.updateBounds = function() {
// Update the edge points
this.offset.setTo(this._cache.a02 - (this.anchor.x * this._cache.width), this._cache.a12 - (this.anchor.y * this._cache.height));
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this.getLocalPosition(this.center, this.offset.x + this._cache.halfWidth, this.offset.y + this._cache.halfHeight);
this.getLocalPosition(this.topLeft, this.offset.x, this.offset.y);
this.getLocalPosition(this.topRight, this.offset.x + this._cache.width, this.offset.y);
this.getLocalPosition(this.bottomLeft, this.offset.x, this.offset.y + this._cache.height);
this.getLocalPosition(this.bottomRight, this.offset.x + this._cache.width, this.offset.y + this._cache.height);
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this._cache.left = Phaser.Math.min(this.topLeft.x, this.topRight.x, this.bottomLeft.x, this.bottomRight.x);
this._cache.right = Phaser.Math.max(this.topLeft.x, this.topRight.x, this.bottomLeft.x, this.bottomRight.x);
this._cache.top = Phaser.Math.min(this.topLeft.y, this.topRight.y, this.bottomLeft.y, this.bottomRight.y);
this._cache.bottom = Phaser.Math.max(this.topLeft.y, this.topRight.y, this.bottomLeft.y, this.bottomRight.y);
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this.bounds.setTo(this._cache.left, this._cache.top, this._cache.right - this._cache.left, this._cache.bottom - this._cache.top);
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// This is the coordinate the Sprite was at when the last bounds was created
this._cache.boundsX = this._cache.x;
this._cache.boundsY = this._cache.y;
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if (this.inWorld == false)
{
// Sprite WAS out of the screen, is it still?
this.inWorld = Phaser.Rectangle.intersects(this.bounds, this.game.world.bounds, this.inWorldThreshold);
if (this.inWorld)
{
// It's back again, reset the OOB check
this._outOfBoundsFired = false;
}
}
else
{
// Sprite WAS in the screen, has it now left?
this.inWorld = Phaser.Rectangle.intersects(this.bounds, this.game.world.bounds, this.inWorldThreshold);
if (this.inWorld == false)
{
this.events.onOutOfBounds.dispatch(this);
this._outOfBoundsFired = true;
}
}
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}
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/**
* Description.
*
* @method Phaser.Sprite.prototype.getLocalPosition
* @param {Description} p - Description.
* @param {number} x - Description.
* @param {number} y - Description.
* @return {Description} Description.
*/
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Phaser.Sprite.prototype.getLocalPosition = function(p, x, y) {
p.x = ((this._cache.a11 * this._cache.id * x + -this._cache.a01 * this._cache.id * y + (this._cache.a12 * this._cache.a01 - this._cache.a02 * this._cache.a11) * this._cache.id) * this._cache.scaleX) + this._cache.a02;
p.y = ((this._cache.a00 * this._cache.id * y + -this._cache.a10 * this._cache.id * x + (-this._cache.a12 * this._cache.a00 + this._cache.a02 * this._cache.a10) * this._cache.id) * this._cache.scaleY) + this._cache.a12;
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return p;
}
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/**
* Description.
*
* @method Phaser.Sprite.prototype.getLocalUnmodifiedPosition
* @param {Description} p - Description.
* @param {number} x - Description.
* @param {number} y - Description.
* @return {Description} Description.
*/
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Phaser.Sprite.prototype.getLocalUnmodifiedPosition = function(p, x, y) {
p.x = this._cache.a11 * this._cache.idi * x + -this._cache.i01 * this._cache.idi * y + (this._cache.a12 * this._cache.i01 - this._cache.a02 * this._cache.a11) * this._cache.idi;
p.y = this._cache.a00 * this._cache.idi * y + -this._cache.i10 * this._cache.idi * x + (-this._cache.a12 * this._cache.a00 + this._cache.a02 * this._cache.i10) * this._cache.idi;
return p;
}
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/**
* Description.
*
* @method Phaser.Sprite.prototype.bringToTop
*/
Phaser.Sprite.prototype.bringToTop = function() {
if (this.group)
{
this.group.bringToTop(this);
}
else
{
this.game.world.bringToTop(this);
}
}
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/**
* Description.
*
* @method Phaser.Sprite.prototype.bringToTop
* @param {Phaser.Rectangle} rect - Description.
* @return {Phaser.Rectangle} Description.
*/
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Phaser.Sprite.prototype.getBounds = function(rect) {
rect = rect || new Phaser.Rectangle;
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var left = Phaser.Math.min(this.topLeft.x, this.topRight.x, this.bottomLeft.x, this.bottomRight.x);
var right = Phaser.Math.max(this.topLeft.x, this.topRight.x, this.bottomLeft.x, this.bottomRight.x);
var top = Phaser.Math.min(this.topLeft.y, this.topRight.y, this.bottomLeft.y, this.bottomRight.y);
var bottom = Phaser.Math.max(this.topLeft.y, this.topRight.y, this.bottomLeft.y, this.bottomRight.y);
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rect.x = left;
rect.y = top;
rect.width = right - left;
rect.height = bottom - top;
return rect;
}
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/**
* Play an animation based on the given key. The animation should previously have been added via sprite.animations.add()
* If the requested animation is already playing this request will be ignored. If you need to reset an already running animation do so directly on the Animation object itself.
*
* @method play
* @param {String} name The name of the animation to be played, e.g. "fire", "walk", "jump".
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* @param {number} [frameRate=null] The framerate to play the animation at. The speed is given in frames per second. If not provided the previously set frameRate of the Animation is used.
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* @param {Boolean} [loop=null] Should the animation be looped after playback. If not provided the previously set loop value of the Animation is used.
* @return {Phaser.Animation} A reference to playing Animation instance.
*/
Phaser.Sprite.prototype.play = function (name, frameRate, loop) {
if (this.animations)
{
this.animations.play(name, frameRate, loop);
}
}
Object.defineProperty(Phaser.Sprite.prototype, 'angle', {
get: function() {
return Phaser.Math.radToDeg(this.rotation);
},
set: function(value) {
this.rotation = Phaser.Math.degToRad(value);
}
});
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/**
* Get the animation frame number.
* @returns {Description}
*//**
* Set the animation frame by frame number.
* @param {Description} value - Description
*/
Object.defineProperty(Phaser.Sprite.prototype, "frame", {
get: function () {
return this.animations.frame;
},
set: function (value) {
this.animations.frame = value;
}
});
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/**
* Get the animation frame name.
* @returns {Description}
*//**
* Set the animation frame by frame name.
* @param {Description} value - Description
*/
Object.defineProperty(Phaser.Sprite.prototype, "frameName", {
get: function () {
return this.animations.frameName;
},
set: function (value) {
this.animations.frameName = value;
}
});
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/**
* Is this sprite visible to the camera or not?
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* @returns {boolean}
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*/
Object.defineProperty(Phaser.Sprite.prototype, "inCamera", {
get: function () {
return this._cache.cameraVisible;
}
});
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/**
* Get the input enabled state of this Sprite.
* @returns {Description}
*//**
* Set the ability for this sprite to receive input events.
* @param {Description} value - Description
*/
Object.defineProperty(Phaser.Sprite.prototype, "crop", {
get: function () {
return this._cropRect;
},
set: function (value) {
if (value instanceof Phaser.Rectangle)
{
if (this._cropUUID == null)
{
this._cropUUID = this.game.rnd.uuid();
PIXI.TextureCache[this._cropUUID] = new PIXI.Texture(PIXI.BaseTextureCache[this.key], {
x: value.x,
y: value.y,
width: value.width,
height: value.height
});
}
else
{
PIXI.TextureCache[this._cropUUID].frame = value;
}
this._cropRect = value;
this.setTexture(PIXI.TextureCache[this._cropUUID]);
}
}
});
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/**
* Get the input enabled state of this Sprite.
* @returns {Description}
*//**
* Set the ability for this sprite to receive input events.
* @param {Description} value - Description
*/
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Object.defineProperty(Phaser.Sprite.prototype, "inputEnabled", {
get: function () {
return (this.input.enabled);
},
set: function (value) {
if (value)
{
if (this.input.enabled == false)
{
this.input.start();
}
}
else
{
if (this.input.enabled)
{
this.input.stop();
}
}
}
});