mirror of
https://github.com/photonstorm/phaser
synced 2024-12-19 17:44:45 +00:00
95b0532f59
Emitter.setAlpha has a new 'rate' parameter which allows particles to change alpha over time, using any Easing value or timescale. Emitter.bringToTop and Emitter.sendToBack are booleans that let you optionally set the display order of the Particle when emitted.
751 lines
23 KiB
JavaScript
751 lines
23 KiB
JavaScript
/**
|
|
* @author Richard Davey <rich@photonstorm.com>
|
|
* @copyright 2014 Photon Storm Ltd.
|
|
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
|
|
*/
|
|
|
|
/**
|
|
* Phaser - ArcadeEmitter
|
|
*
|
|
* @class Phaser.Particles.Arcade.Emitter
|
|
* @classdesc Emitter is a lightweight particle emitter. It can be used for one-time explosions or for
|
|
* continuous effects like rain and fire. All it really does is launch Particle objects out
|
|
* at set intervals, and fixes their positions and velocities accorindgly.
|
|
* @constructor
|
|
* @extends Phaser.Group
|
|
* @param {Phaser.Game} game - Current game instance.
|
|
* @param {number} [x=0] - The x coordinate within the Emitter that the particles are emitted from.
|
|
* @param {number} [y=0] - The y coordinate within the Emitter that the particles are emitted from.
|
|
* @param {number} [maxParticles=50] - The total number of particles in this emitter..
|
|
*/
|
|
|
|
Phaser.Particles.Arcade.Emitter = function (game, x, y, maxParticles) {
|
|
|
|
/**
|
|
* @property {number} maxParticles - The total number of particles in this emitter..
|
|
* @default
|
|
*/
|
|
this.maxParticles = maxParticles || 50;
|
|
|
|
Phaser.Group.call(this, game);
|
|
|
|
/**
|
|
* @property {string} name - Description.
|
|
*/
|
|
this.name = 'emitter' + this.game.particles.ID++;
|
|
|
|
/**
|
|
* @property {number} type - Internal Phaser Type value.
|
|
* @protected
|
|
*/
|
|
this.type = Phaser.EMITTER;
|
|
|
|
/**
|
|
* @property {number} width - The width of the emitter. Particles can be randomly generated from anywhere within this box.
|
|
* @default
|
|
*/
|
|
this.width = 1;
|
|
|
|
/**
|
|
* @property {number} height - The height of the emitter. Particles can be randomly generated from anywhere within this box.
|
|
* @default
|
|
*/
|
|
this.height = 1;
|
|
|
|
/**
|
|
* @property {Phaser.Point} minParticleSpeed - The minimum possible velocity of a particle.
|
|
* @default
|
|
*/
|
|
this.minParticleSpeed = new Phaser.Point(-100, -100);
|
|
|
|
/**
|
|
* @property {Phaser.Point} maxParticleSpeed - The maximum possible velocity of a particle.
|
|
* @default
|
|
*/
|
|
this.maxParticleSpeed = new Phaser.Point(100, 100);
|
|
|
|
/**
|
|
* @property {number} minParticleScale - The minimum possible scale of a particle.
|
|
* @default
|
|
*/
|
|
this.minParticleScale = 1;
|
|
|
|
/**
|
|
* @property {number} maxParticleScale - The maximum possible scale of a particle.
|
|
* @default
|
|
*/
|
|
this.maxParticleScale = 1;
|
|
|
|
/**
|
|
* @property {array} scaleData - An array of the calculated scale easing data applied to particles with scaleRates > 0.
|
|
*/
|
|
this.scaleData = null;
|
|
|
|
/**
|
|
* @property {number} minRotation - The minimum possible angular velocity of a particle.
|
|
* @default
|
|
*/
|
|
this.minRotation = -360;
|
|
|
|
/**
|
|
* @property {number} maxRotation - The maximum possible angular velocity of a particle.
|
|
* @default
|
|
*/
|
|
this.maxRotation = 360;
|
|
|
|
/**
|
|
* @property {number} minParticleAlpha - The minimum possible alpha value of a particle.
|
|
* @default
|
|
*/
|
|
this.minParticleAlpha = 1;
|
|
|
|
/**
|
|
* @property {number} maxParticleAlpha - The maximum possible alpha value of a particle.
|
|
* @default
|
|
*/
|
|
this.maxParticleAlpha = 1;
|
|
|
|
/**
|
|
* @property {array} alphaData - An array of the calculated alpha easing data applied to particles with alphaRates > 0.
|
|
*/
|
|
this.alphaData = null;
|
|
|
|
/**
|
|
* @property {number} gravity - Sets the `body.gravity.y` of each particle sprite to this value on launch.
|
|
* @default
|
|
*/
|
|
this.gravity = 100;
|
|
|
|
/**
|
|
* @property {any} particleClass - For emitting your own particle class types. They must extend Phaser.Particle.
|
|
* @default
|
|
*/
|
|
this.particleClass = Phaser.Particle;
|
|
|
|
/**
|
|
* @property {Phaser.Point} particleDrag - The X and Y drag component of particles launched from the emitter.
|
|
*/
|
|
this.particleDrag = new Phaser.Point();
|
|
|
|
/**
|
|
* @property {number} angularDrag - The angular drag component of particles launched from the emitter if they are rotating.
|
|
* @default
|
|
*/
|
|
this.angularDrag = 0;
|
|
|
|
/**
|
|
* @property {boolean} frequency - How often a particle is emitted in ms (if emitter is started with Explode === false).
|
|
* @default
|
|
*/
|
|
this.frequency = 100;
|
|
|
|
/**
|
|
* @property {number} lifespan - How long each particle lives once it is emitted in ms. Default is 2 seconds. Set lifespan to 'zero' for particles to live forever.
|
|
* @default
|
|
*/
|
|
this.lifespan = 2000;
|
|
|
|
/**
|
|
* @property {Phaser.Point} bounce - How much each particle should bounce on each axis. 1 = full bounce, 0 = no bounce.
|
|
*/
|
|
this.bounce = new Phaser.Point();
|
|
|
|
/**
|
|
* @property {boolean} on - Determines whether the emitter is currently emitting particles. It is totally safe to directly toggle this.
|
|
* @default
|
|
*/
|
|
this.on = false;
|
|
|
|
/**
|
|
* @property {Phaser.Point} particleAnchor - When a particle is created its anchor will be set to match this Point object (defaults to x/y: 0.5 to aid in rotation)
|
|
* @default
|
|
*/
|
|
this.particleAnchor = new Phaser.Point(0.5, 0.5);
|
|
|
|
/**
|
|
* @property {number} blendMode - The blendMode as set on the particle when emitted from the Emitter. Defaults to NORMAL. Needs browser capable of supporting canvas blend-modes (most not available in WebGL)
|
|
* @default
|
|
*/
|
|
this.blendMode = Phaser.blendModes.NORMAL;
|
|
|
|
/**
|
|
* The point the particles are emitted from.
|
|
* Emitter.x and Emitter.y control the containers location, which updates all current particles
|
|
* Emitter.emitX and Emitter.emitY control the emission location relative to the x/y position.
|
|
* @property {number} emitX
|
|
*/
|
|
this.emitX = x;
|
|
|
|
/**
|
|
* The point the particles are emitted from.
|
|
* Emitter.x and Emitter.y control the containers location, which updates all current particles
|
|
* Emitter.emitX and Emitter.emitY control the emission location relative to the x/y position.
|
|
* @property {number} emitY
|
|
*/
|
|
this.emitY = y;
|
|
|
|
/**
|
|
* @property {boolean} autoScale - When a new Particle is emitted this controls if it will automatically scale in size. Use Emitter.setScale to configure.
|
|
*/
|
|
this.autoScale = false;
|
|
|
|
/**
|
|
* @property {boolean} autoAlpha - When a new Particle is emitted this controls if it will automatically change alpha. Use Emitter.setAlpha to configure.
|
|
*/
|
|
this.autoAlpha = false;
|
|
|
|
/**
|
|
* @property {boolean} particleBringToTop - If this is `true` then when the Particle is emitted it will be bought to the top of the Emitters display list.
|
|
* @default
|
|
*/
|
|
this.particleBringToTop = false;
|
|
|
|
/**
|
|
* @property {boolean} particleSendToBack - If this is `true` then when the Particle is emitted it will be sent to the back of the Emitters display list.
|
|
* @default
|
|
*/
|
|
this.particleSendToBack = false;
|
|
|
|
/**
|
|
* @property {number} _quantity - Internal helper for deciding how many particles to launch.
|
|
* @private
|
|
*/
|
|
this._quantity = 0;
|
|
|
|
/**
|
|
* @property {number} _timer - Internal helper for deciding when to launch particles or kill them.
|
|
* @private
|
|
*/
|
|
this._timer = 0;
|
|
|
|
/**
|
|
* @property {number} _counter - Internal counter for figuring out how many particles to launch.
|
|
* @private
|
|
*/
|
|
this._counter = 0;
|
|
|
|
/**
|
|
* @property {boolean} _explode - Internal helper for the style of particle emission (all at once, or one at a time).
|
|
* @private
|
|
*/
|
|
this._explode = true;
|
|
|
|
/**
|
|
* @property {any} _frames - Internal helper for the particle frame.
|
|
* @private
|
|
*/
|
|
this._frames = null;
|
|
|
|
};
|
|
|
|
Phaser.Particles.Arcade.Emitter.prototype = Object.create(Phaser.Group.prototype);
|
|
Phaser.Particles.Arcade.Emitter.prototype.constructor = Phaser.Particles.Arcade.Emitter;
|
|
|
|
/**
|
|
* Called automatically by the game loop, decides when to launch particles and when to "die".
|
|
* @method Phaser.Particles.Arcade.Emitter#update
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.update = function () {
|
|
|
|
if (this.on)
|
|
{
|
|
var i = this.children.length;
|
|
|
|
while (i--)
|
|
{
|
|
this.children[i].update();
|
|
}
|
|
|
|
if (this._explode)
|
|
{
|
|
this._counter = 0;
|
|
|
|
do
|
|
{
|
|
this.emitParticle();
|
|
this._counter++;
|
|
}
|
|
while (this._counter < this._quantity);
|
|
|
|
this.on = false;
|
|
}
|
|
else
|
|
{
|
|
if (this.game.time.now >= this._timer)
|
|
{
|
|
this.emitParticle();
|
|
|
|
this._counter++;
|
|
|
|
if (this._quantity > 0)
|
|
{
|
|
if (this._counter >= this._quantity)
|
|
{
|
|
this.on = false;
|
|
}
|
|
}
|
|
|
|
this._timer = this.game.time.now + this.frequency;
|
|
}
|
|
}
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* This function generates a new set of particles for use by this emitter.
|
|
* The particles are stored internally waiting to be emitted via Emitter.start.
|
|
*
|
|
* @method Phaser.Particles.Arcade.Emitter#makeParticles
|
|
* @param {array|string} keys - A string or an array of strings that the particle sprites will use as their texture. If an array one is picked at random.
|
|
* @param {array|number} [frames=0] - A frame number, or array of frames that the sprite will use. If an array one is picked at random.
|
|
* @param {number} [quantity] - The number of particles to generate. If not given it will use the value of Emitter.maxParticles.
|
|
* @param {boolean} [collide=false] - If you want the particles to be able to collide with other Arcade Physics bodies then set this to true.
|
|
* @param {boolean} [collideWorldBounds=false] - A particle can be set to collide against the World bounds automatically and rebound back into the World if this is set to true. Otherwise it will leave the World.
|
|
* @return {Phaser.Particles.Arcade.Emitter} This Emitter instance.
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.makeParticles = function (keys, frames, quantity, collide, collideWorldBounds) {
|
|
|
|
if (typeof frames === 'undefined') { frames = 0; }
|
|
if (typeof quantity === 'undefined') { quantity = this.maxParticles; }
|
|
if (typeof collide === 'undefined') { collide = false; }
|
|
if (typeof collideWorldBounds === 'undefined') { collideWorldBounds = false; }
|
|
|
|
var particle;
|
|
var i = 0;
|
|
var rndKey = keys;
|
|
var rndFrame = frames;
|
|
this._frames = frames;
|
|
|
|
while (i < quantity)
|
|
{
|
|
if (typeof keys === 'object')
|
|
{
|
|
rndKey = this.game.rnd.pick(keys);
|
|
}
|
|
|
|
if (typeof frames === 'object')
|
|
{
|
|
rndFrame = this.game.rnd.pick(frames);
|
|
}
|
|
|
|
particle = new this.particleClass(this.game, 0, 0, rndKey, rndFrame);
|
|
|
|
this.game.physics.arcade.enable(particle, false);
|
|
|
|
if (collide)
|
|
{
|
|
particle.body.checkCollision.any = true;
|
|
particle.body.checkCollision.none = false;
|
|
}
|
|
else
|
|
{
|
|
particle.body.checkCollision.none = true;
|
|
}
|
|
|
|
particle.body.collideWorldBounds = collideWorldBounds;
|
|
|
|
particle.exists = false;
|
|
particle.visible = false;
|
|
particle.anchor.copyFrom(this.particleAnchor);
|
|
|
|
this.add(particle);
|
|
|
|
i++;
|
|
}
|
|
|
|
return this;
|
|
|
|
};
|
|
|
|
/**
|
|
* Call this function to turn off all the particles and the emitter.
|
|
*
|
|
* @method Phaser.Particles.Arcade.Emitter#kill
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.kill = function () {
|
|
|
|
this.on = false;
|
|
this.alive = false;
|
|
this.exists = false;
|
|
|
|
};
|
|
|
|
/**
|
|
* Handy for bringing game objects "back to life". Just sets alive and exists back to true.
|
|
*
|
|
* @method Phaser.Particles.Arcade.Emitter#revive
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.revive = function () {
|
|
|
|
this.alive = true;
|
|
this.exists = true;
|
|
|
|
};
|
|
|
|
/**
|
|
* Call this function to start emitting particles.
|
|
* @method Phaser.Particles.Arcade.Emitter#start
|
|
* @param {boolean} [explode=true] - Whether the particles should all burst out at once (true) or at the frequency given (false).
|
|
* @param {number} [lifespan=0] - How long each particle lives once emitted in ms. 0 = forever.
|
|
* @param {number} [frequency=250] - Ignored if Explode is set to true. Frequency is how often to emit a particle in ms.
|
|
* @param {number} [quantity=0] - How many particles to launch. 0 = "all of the particles".
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.start = function (explode, lifespan, frequency, quantity) {
|
|
|
|
if (typeof explode === 'undefined') { explode = true; }
|
|
if (typeof lifespan === 'undefined') { lifespan = 0; }
|
|
if (typeof frequency === 'undefined' || frequency === null) { frequency = 250; }
|
|
if (typeof quantity === 'undefined') { quantity = 0; }
|
|
|
|
this.revive();
|
|
|
|
this.visible = true;
|
|
this.on = true;
|
|
|
|
this._explode = explode;
|
|
this.lifespan = lifespan;
|
|
this.frequency = frequency;
|
|
|
|
if (explode)
|
|
{
|
|
this._quantity = quantity;
|
|
}
|
|
else
|
|
{
|
|
this._quantity += quantity;
|
|
}
|
|
|
|
this._counter = 0;
|
|
this._timer = this.game.time.now + frequency;
|
|
|
|
};
|
|
|
|
/**
|
|
* This function can be used both internally and externally to emit the next particle in the queue.
|
|
*
|
|
* @method Phaser.Particles.Arcade.Emitter#emitParticle
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.emitParticle = function () {
|
|
|
|
var particle = this.getFirstExists(false);
|
|
|
|
if (particle === null)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (this.width > 1 || this.height > 1)
|
|
{
|
|
particle.reset(this.game.rnd.integerInRange(this.left, this.right), this.game.rnd.integerInRange(this.top, this.bottom));
|
|
}
|
|
else
|
|
{
|
|
particle.reset(this.emitX, this.emitY);
|
|
}
|
|
|
|
particle.angle = 0;
|
|
particle.lifespan = this.lifespan;
|
|
|
|
if (this.particleBringToTop)
|
|
{
|
|
this.bringToTop(particle);
|
|
}
|
|
else if (this.particleSendToBack)
|
|
{
|
|
this.sendToBack(particle);
|
|
}
|
|
|
|
if (this.autoScale)
|
|
{
|
|
particle.setScaleData(this.scaleData);
|
|
}
|
|
else
|
|
{
|
|
particle.scale.set(this.game.rnd.realInRange(this.minParticleScale, this.maxParticleScale));
|
|
}
|
|
|
|
if (Array.isArray(this._frames === 'object'))
|
|
{
|
|
particle.frame = this.game.rnd.pick(this._frames);
|
|
}
|
|
else
|
|
{
|
|
particle.frame = this._frames;
|
|
}
|
|
|
|
if (this.autoAlpha)
|
|
{
|
|
particle.setAlphaData(this.alphaData);
|
|
}
|
|
else
|
|
{
|
|
particle.alpha = this.game.rnd.realInRange(this.minParticleAlpha, this.maxParticleAlpha);
|
|
}
|
|
|
|
particle.blendMode = this.blendMode;
|
|
|
|
particle.body.updateBounds();
|
|
|
|
particle.body.bounce.setTo(this.bounce.x, this.bounce.y);
|
|
|
|
particle.body.velocity.x = this.game.rnd.integerInRange(this.minParticleSpeed.x, this.maxParticleSpeed.x);
|
|
particle.body.velocity.y = this.game.rnd.integerInRange(this.minParticleSpeed.y, this.maxParticleSpeed.y);
|
|
particle.body.angularVelocity = this.game.rnd.integerInRange(this.minRotation, this.maxRotation);
|
|
|
|
particle.body.gravity.y = this.gravity;
|
|
|
|
particle.body.drag.x = this.particleDrag.x;
|
|
particle.body.drag.y = this.particleDrag.y;
|
|
|
|
particle.body.angularDrag = this.angularDrag;
|
|
|
|
particle.onEmit();
|
|
|
|
};
|
|
|
|
/**
|
|
* A more compact way of setting the width and height of the emitter.
|
|
* @method Phaser.Particles.Arcade.Emitter#setSize
|
|
* @param {number} width - The desired width of the emitter (particles are spawned randomly within these dimensions).
|
|
* @param {number} height - The desired height of the emitter.
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.setSize = function (width, height) {
|
|
|
|
this.width = width;
|
|
this.height = height;
|
|
|
|
};
|
|
|
|
/**
|
|
* A more compact way of setting the X velocity range of the emitter.
|
|
* @method Phaser.Particles.Arcade.Emitter#setXSpeed
|
|
* @param {number} [min=0] - The minimum value for this range.
|
|
* @param {number} [max=0] - The maximum value for this range.
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.setXSpeed = function (min, max) {
|
|
|
|
min = min || 0;
|
|
max = max || 0;
|
|
|
|
this.minParticleSpeed.x = min;
|
|
this.maxParticleSpeed.x = max;
|
|
|
|
};
|
|
|
|
/**
|
|
* A more compact way of setting the Y velocity range of the emitter.
|
|
* @method Phaser.Particles.Arcade.Emitter#setYSpeed
|
|
* @param {number} [min=0] - The minimum value for this range.
|
|
* @param {number} [max=0] - The maximum value for this range.
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.setYSpeed = function (min, max) {
|
|
|
|
min = min || 0;
|
|
max = max || 0;
|
|
|
|
this.minParticleSpeed.y = min;
|
|
this.maxParticleSpeed.y = max;
|
|
|
|
};
|
|
|
|
/**
|
|
* A more compact way of setting the angular velocity constraints of the particles.
|
|
*
|
|
* @method Phaser.Particles.Arcade.Emitter#setRotation
|
|
* @param {number} [min=0] - The minimum value for this range.
|
|
* @param {number} [max=0] - The maximum value for this range.
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.setRotation = function (min, max) {
|
|
|
|
min = min || 0;
|
|
max = max || 0;
|
|
|
|
this.minRotation = min;
|
|
this.maxRotation = max;
|
|
|
|
};
|
|
|
|
/**
|
|
* A more compact way of setting the alpha constraints of the particles.
|
|
* The rate parameter, if set to a value above zero, lets you set the speed at which the Particle change in alpha from min to max.
|
|
* If rate is zero, which is the default, the particle won't change alpha - instead it will pick a random alpha between min and max on emit.
|
|
*
|
|
* @method Phaser.Particles.Arcade.Emitter#setAlpha
|
|
* @param {number} [min=1] - The minimum value for this range.
|
|
* @param {number} [max=1] - The maximum value for this range.
|
|
* @param {number} [rate=0] - The rate (in ms) at which the particles will change in alpha from min to max, or set to zero to pick a random alpha between the two.
|
|
* @param {number} [ease=Phaser.Easing.Linear.None] - If you've set a rate > 0 this is the easing formula applied between the min and max values.
|
|
* @param {boolean} [yoyo=false] - If you've set a rate > 0 you can set if the ease will yoyo or not (i.e. ease back to its original values)
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.setAlpha = function (min, max, rate, ease, yoyo) {
|
|
|
|
if (typeof min === 'undefined') { min = 1; }
|
|
if (typeof max === 'undefined') { max = 1; }
|
|
if (typeof rate === 'undefined') { rate = 0; }
|
|
if (typeof ease === 'undefined') { ease = Phaser.Easing.Linear.None; }
|
|
if (typeof yoyo === 'undefined') { yoyo = false; }
|
|
|
|
this.minParticleAlpha = min;
|
|
this.maxParticleAlpha = max;
|
|
this.autoAlpha = false;
|
|
|
|
if (rate > 0)
|
|
{
|
|
var tweenData = { v: min };
|
|
var tween = this.game.make.tween(tweenData).to( { v: max }, rate, ease);
|
|
tween.yoyo(yoyo);
|
|
|
|
this.alphaData = tween.generateData(60);
|
|
|
|
// Inverse it so we don't have to do array length look-ups in Particle update loops
|
|
this.alphaData.reverse();
|
|
this.autoAlpha = true;
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* A more compact way of setting the scale constraints of the particles.
|
|
* The rate parameter, if set to a value above zero, lets you set the speed and ease which the Particle uses to change in scale from min to max.
|
|
* If rate is zero, which is the default, the particle won't change scale - instead it will pick a random scale between min and max on emit.
|
|
*
|
|
* @method Phaser.Particles.Arcade.Emitter#setScale
|
|
* @param {number} [min=1] - The minimum value for this range.
|
|
* @param {number} [max=1] - The maximum value for this range.
|
|
* @param {number} [rate=0] - The rate (in ms) at which the particles will change in scale from min to max, or set to zero to pick a random size between the two.
|
|
* @param {number} [ease=Phaser.Easing.Linear.None] - If you've set a rate > 0 this is the easing formula applied between the min and max values.
|
|
* @param {boolean} [yoyo=false] - If you've set a rate > 0 you can set if the ease will yoyo or not (i.e. ease back to its original values)
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.setScale = function (min, max, rate, ease, yoyo) {
|
|
|
|
if (typeof min === 'undefined') { min = 1; }
|
|
if (typeof max === 'undefined') { max = 1; }
|
|
if (typeof rate === 'undefined') { rate = 0; }
|
|
if (typeof ease === 'undefined') { ease = Phaser.Easing.Linear.None; }
|
|
if (typeof yoyo === 'undefined') { yoyo = false; }
|
|
|
|
this.minParticleScale = min;
|
|
this.maxParticleScale = max;
|
|
this.autoScale = false;
|
|
|
|
if (rate > 0)
|
|
{
|
|
var tweenData = { v: min };
|
|
var tween = this.game.make.tween(tweenData).to( { v: max }, rate, ease);
|
|
tween.yoyo(yoyo);
|
|
|
|
this.scaleData = tween.generateData(60);
|
|
|
|
// Inverse it so we don't have to do array length look-ups in Particle update loops
|
|
this.scaleData.reverse();
|
|
this.autoScale = true;
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Change the emitters center to match the center of any object with a `center` property, such as a Sprite.
|
|
* If the object doesn't have a center property it will be set to object.x + object.width / 2
|
|
*
|
|
* @method Phaser.Particles.Arcade.Emitter#at
|
|
* @param {object|Phaser.Sprite|Phaser.Image|Phaser.TileSprite|Phaser.Text|PIXI.DisplayObject} object - The object that you wish to match the center with.
|
|
*/
|
|
Phaser.Particles.Arcade.Emitter.prototype.at = function (object) {
|
|
|
|
if (object.center)
|
|
{
|
|
this.emitX = object.center.x;
|
|
this.emitY = object.center.y;
|
|
}
|
|
else
|
|
{
|
|
this.emitX = object.world.x + (object.anchor.x * object.width);
|
|
this.emitY = object.world.y + (object.anchor.y * object.height);
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* @name Phaser.Particles.Arcade.Emitter#x
|
|
* @property {number} x - Gets or sets the x position of the Emitter.
|
|
*/
|
|
Object.defineProperty(Phaser.Particles.Arcade.Emitter.prototype, "x", {
|
|
|
|
get: function () {
|
|
return this.emitX;
|
|
},
|
|
|
|
set: function (value) {
|
|
this.emitX = value;
|
|
}
|
|
|
|
});
|
|
|
|
/**
|
|
* @name Phaser.Particles.Arcade.Emitter#y
|
|
* @property {number} y - Gets or sets the y position of the Emitter.
|
|
*/
|
|
Object.defineProperty(Phaser.Particles.Arcade.Emitter.prototype, "y", {
|
|
|
|
get: function () {
|
|
return this.emitY;
|
|
},
|
|
|
|
set: function (value) {
|
|
this.emitY = value;
|
|
}
|
|
|
|
});
|
|
|
|
/**
|
|
* @name Phaser.Particles.Arcade.Emitter#left
|
|
* @property {number} left - Gets the left position of the Emitter.
|
|
* @readonly
|
|
*/
|
|
Object.defineProperty(Phaser.Particles.Arcade.Emitter.prototype, "left", {
|
|
|
|
get: function () {
|
|
return Math.floor(this.x - (this.width / 2));
|
|
}
|
|
|
|
});
|
|
|
|
/**
|
|
* @name Phaser.Particles.Arcade.Emitter#right
|
|
* @property {number} right - Gets the right position of the Emitter.
|
|
* @readonly
|
|
*/
|
|
Object.defineProperty(Phaser.Particles.Arcade.Emitter.prototype, "right", {
|
|
|
|
get: function () {
|
|
return Math.floor(this.x + (this.width / 2));
|
|
}
|
|
|
|
});
|
|
|
|
/**
|
|
* @name Phaser.Particles.Arcade.Emitter#top
|
|
* @property {number} top - Gets the top position of the Emitter.
|
|
* @readonly
|
|
*/
|
|
Object.defineProperty(Phaser.Particles.Arcade.Emitter.prototype, "top", {
|
|
|
|
get: function () {
|
|
return Math.floor(this.y - (this.height / 2));
|
|
}
|
|
|
|
});
|
|
|
|
/**
|
|
* @name Phaser.Particles.Arcade.Emitter#bottom
|
|
* @property {number} bottom - Gets the bottom position of the Emitter.
|
|
* @readonly
|
|
*/
|
|
Object.defineProperty(Phaser.Particles.Arcade.Emitter.prototype, "bottom", {
|
|
|
|
get: function () {
|
|
return Math.floor(this.y + (this.height / 2));
|
|
}
|
|
|
|
});
|