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Added ability to Scale particles when emitted.

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This commit is contained in:
Richard Davey 2013-09-10 11:18:50 +01:00
parent 4f950ae801
commit 609ea7ec8f
2 changed files with 24 additions and 6 deletions
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9
examples/particles.php
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@ -33,15 +33,18 @@
game.stage.backgroundColor = 0x337799;
p = game.add.emitter(200, 100, 50);
p = game.add.emitter(200, 100, 250);
// p.width = 200;
// p.height = 200;
// keys, frames, quantity, collide
// p.makeParticles(['diamond', 'carrot', 'star']);
p.makeParticles('balls', [0,1,2,3,4,5]);
// p.makeParticles('pixies', [0,1,2,3]);
// p.makeParticles('balls', [0,1,2,3,4,5]);
p.makeParticles('pixies', [0,1,2,3]);
p.minParticleScale = 0.1;
p.maxParticleScale = 0.5;
// Steady constant stream at 250ms delay and 10 seconds lifespan
// p.start(false, 10000, 250, 100);

21
src/particles/arcade/Emitter.js
View file

@ -46,15 +46,25 @@ Phaser.Particles.Arcade.Emitter = function (game, x, y, maxParticles) {
*/
this.maxParticleSpeed = new Phaser.Point(100, 100);
/**
* The minimum possible scale of a particle.
* The default value is 1.
*/
this.minParticleScale = 1;
/**
* The maximum possible scale of a particle.
* The default value is 1.
*/
this.maxParticleScale = 1;
/**
* The minimum possible angular velocity of a particle. The default value is -360.
* NOTE: rotating particles are more expensive to draw than non-rotating ones!
*/
this.minRotation = -360;
/**
* The maximum possible angular velocity of a particle. The default value is 360.
* NOTE: rotating particles are more expensive to draw than non-rotating ones!
*/
this.maxRotation = 360;
@ -325,7 +335,6 @@ Phaser.Particles.Arcade.Emitter.prototype.emitParticle = function () {
if (this.width > 1 || this.height > 1)
{
// particle.reset(this.x - this.game.rnd.integerInRange(this.left, this.right), this.y - this.game.rnd.integerInRange(this.top, this.bottom));
particle.reset(this.x - this.game.rnd.integerInRange(this.left, this.right), this.y - this.game.rnd.integerInRange(this.top, this.bottom));
}
else
@ -366,6 +375,12 @@ Phaser.Particles.Arcade.Emitter.prototype.emitParticle = function () {
particle.body.angularVelocity = this.minRotation;
}
if (this.minParticleScale !== 1 || this.maxParticleScale !== 1)
{
var scale = this.game.rnd.realInRange(this.minParticleScale, this.maxParticleScale);
particle.scale.setTo(scale, scale);
}
particle.body.drag.x = this.particleDrag.x;
particle.body.drag.y = this.particleDrag.y;