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I was trying to hook up http://www.a-jie.cn/proton/example/render/custom/pixijs.html to my project. var proton; var emitter; function Main() { createProton(); createRender(); tick(); } Main(); function createProton() { var texture = PIXI.utils.TextureCache["image/fire.png"]; proton = new Proton(); emitter = new Proton.BehaviourEmitter(); emitter.rate = new Proton.Rate(new Proton.Span(15, 30), new Proton.Span(.2, .5)); emitter.addInitialize(new Proton.Mass(1)); emitter.addInitialize(new Proton.ImageTarget(texture)); emitter.addInitialize(new Proton.Life(2, 3)); emitter.addInitialize(new Proton.Velocity(new Proton.Span(3, 9), new Proton.Span(0, 30, true), 'polar')); emitter.addBehaviour(new Proton.Gravity(8)); emitter.addBehaviour(new Proton.Scale(new Proton.Span(1, 3), 0.3)); emitter.addBehaviour(new Proton.Alpha(1, 0.5)); emitter.addBehaviour(new Proton.Rotate(0, Proton.getSpan(-8, 9), 'add')); emitter.p.x = 1003 / 2; emitter.p.y = 100; emitter.emit(); proton.addEmitter(emitter); emitter.addSelfBehaviour(new Proton.Gravity(5)); emitter.addSelfBehaviour(new Proton.RandomDrift(30, 30, .1)); emitter.addSelfBehaviour(new Proton.CrossZone(new Proton.RectZone(50, 0, 953, 610), 'bound')); } function createRender() { var renderer = new Proton.Renderer('other', proton); document.body.appendChild(renderPIXI.view); renderer.onProtonUpdate = function() { }; renderer.onParticleCreated = function(particle) { var particleSprite = new PIXI.Sprite(particle.target); particle.sprite = particleSprite; stage.addChild(particle.sprite); }; renderer.onParticleUpdate = function(particle) { transformSprite(particle.sprite, particle); }; renderer.onParticleDead = function(particle) { stage.removeChild(particle.sprite); }; renderer.start(); } function transformSprite(particleSprite, particle) { particleSprite.position.x = particle.p.x; particleSprite.position.y = particle.p.y; particleSprite.scale.x = particle.scale; particleSprite.scale.y = particle.scale; particleSprite.anchor.x = 0.5; particleSprite.anchor.y = 0.5; particleSprite.alpha = particle.alpha; particleSprite.rotation = particle.rotation*Math.PI/180; } function tick() { proton.update(); renderPIXI.render(stage); } tick(); I got rid of all the errors but nothing is displaying. I have this put inside the game loop.