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 /*
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 * HexGL
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 * @author Thibaut 'BKcore' Despoulain <http://bkcore.com>
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 * @license This work is licensed under the Creative Commons Attribution-NonCommercial 3.0 Unported License.
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 *          To view a copy of this license, visit http://creativecommons.org/licenses/by-nc/3.0/.
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 */
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var bkcore = bkcore || {};
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bkcore.hexgl = bkcore.hexgl || {};
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bkcore.hexgl.ShipEffects = function(opts)
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{
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	this.scene = opts.scene;
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	this.shipControls = opts.shipControls;
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	this.booster = opts.booster;
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	this.boosterLight = opts.boosterLight;
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	this.boosterSprite = opts.boosterSprite;
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	this.useParticles = opts.useParticles;
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	if(this.useParticles)
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	{
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		this.pVel = new THREE.Vector3(0.5,0,0);
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		this.pOffset = new THREE.Vector3(-3,-0.3,0);
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		this.pRad = new THREE.Vector3(0,0,1.5);
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		this.shipVelocity = new THREE.Vector3();
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		this.pVelS = this.pVel.length();
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		this.pOffsetS = this.pOffset.length();
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		this.pRadS = this.pRad.length();
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		this.pVel.normalize();
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		this.pOffset.normalize();
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		this.pRad.normalize();
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		this.particles = {
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			leftSparks: new bkcore.threejs.Particles(
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			{
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				randomness: new THREE.Vector3(0.4,0.4,0.4),
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				tint: 0xffffff,
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				color: 0xffc000,
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				color2: 0xffffff,
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				texture: opts.textureSpark,
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				size: 2,
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				life: 60,
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				max: 200
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			}),
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			leftClouds: new bkcore.threejs.Particles(
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			{
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				opacity: 0.8,
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				tint: 0xffffff,
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				color: 0x666666,
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				color2: 0xa4f1ff,
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				texture: opts.textureCloud,
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				size: 6,
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				blending: THREE.NormalBlending,
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				life: 60,
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				max: 200,
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				spawn: new THREE.Vector3(3,-0.3,0),
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				spawnRadius: new THREE.Vector3(1,1,2),
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				velocity: new THREE.Vector3(0,0,-0.4),
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				randomness: new THREE.Vector3(0.05,0.05,0.1)
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			}),
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			rightSparks: new bkcore.threejs.Particles(
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			{
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				randomness: new THREE.Vector3(0.4,0.4,0.4),
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				tint: 0xffffff,
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				color: 0xffc000,
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				color2: 0xffffff,
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				texture: opts.textureSpark,
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				size: 2,
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				life: 60,
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				max: 200
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			}),
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			rightClouds: new bkcore.threejs.Particles(
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			{
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				opacity: 0.8,
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				tint: 0xffffff,
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				color: 0x666666,
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				color2: 0xa4f1ff,
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				texture: opts.textureCloud,
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				size: 6,
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				blending: THREE.NormalBlending,
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				life: 60,
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				max: 200,
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				spawn: new THREE.Vector3(-3,-0.3,0),
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				spawnRadius: new THREE.Vector3(1,1,2),
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				velocity: new THREE.Vector3(0,0,-0.4),
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				randomness: new THREE.Vector3(0.05,0.05,0.1)
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			})
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		};
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		this.shipControls.mesh.add(this.particles.leftClouds.system);
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		this.shipControls.mesh.add(this.particles.rightClouds.system);
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		this.scene.add(this.particles.leftSparks.system);
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		this.scene.add(this.particles.rightSparks.system);
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	}
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}
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bkcore.hexgl.ShipEffects.prototype.update = function(dt)
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{
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	var boostRatio, opacity, scale, intensity, random;
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	if(this.shipControls.destroyed)
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	{
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		opacity = 0;
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		scale = 0;
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		intensity = 0;
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		random = 0;
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	}
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	else
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	{
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		boostRatio = this.shipControls.getBoostRatio();
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		opacity = this.shipControls.key.forward ? 0.8 : 0.3 + boostRatio * 0.4;
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		scale = (this.shipControls.key.forward ? 1.0 : 0.8) + boostRatio * 0.5;
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		intensity = this.shipControls.key.forward ? 4.0 : 2.0;
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		random = Math.random()*0.2;
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	}
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	if(this.booster)
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	{
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		this.booster.rotation.z += 1;
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		this.booster.scale.set(scale, scale, scale);
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		this.booster.material.opacity = random+opacity;
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		this.boosterSprite.opacity = random+opacity;
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		this.boosterLight.intensity = intensity*(random+0.8);
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	}
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	// PARTICLES
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	if(this.useParticles)
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	{
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		this.shipVelocity.copy(this.shipControls.currentVelocity).multiplyScalar(0.7);
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		this.particles.rightSparks.velocity.copy(this.pVel);
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		this.particles.rightSparks.spawnRadius.copy(this.pRad);
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		this.particles.rightSparks.spawn.copy(this.pOffset);
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		this.particles.leftSparks.velocity.copy(this.pVel).x *= -1;
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		this.particles.leftSparks.spawn.copy(this.pOffset).x *= -1;
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		if(this.shipControls.mesh)
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		{
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			// RIGHT
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			this.shipControls.mesh.matrix.rotateAxis(this.particles.rightSparks.spawn);
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			this.particles.rightSparks.spawn.multiplyScalar(this.pOffsetS).addSelf(this.shipControls.dummy.position);
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			this.shipControls.mesh.matrix.rotateAxis(this.particles.rightSparks.velocity);
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			this.particles.rightSparks.velocity.multiplyScalar(this.pVelS).addSelf(this.shipVelocity);
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			this.shipControls.mesh.matrix.rotateAxis(this.particles.rightSparks.spawnRadius);
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			this.particles.rightSparks.spawnRadius.multiplyScalar(this.pRadS);
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			// LEFT
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			this.shipControls.mesh.matrix.rotateAxis(this.particles.leftSparks.spawn);
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			this.particles.leftSparks.spawn.multiplyScalar(this.pOffsetS).addSelf(this.shipControls.dummy.position);
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			this.shipControls.mesh.matrix.rotateAxis(this.particles.leftSparks.velocity);
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			this.particles.leftSparks.velocity.multiplyScalar(this.pVelS).addSelf(this.shipVelocity);
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			this.particles.leftSparks.spawnRadius.copy(this.particles.rightSparks.spawnRadius);
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		}
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		if(this.shipControls.collision.right)
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		{
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			this.particles.rightSparks.emit(10);
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			this.particles.rightClouds.emit(5);
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		}
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		if(this.shipControls.collision.left)
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		{
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			this.particles.leftSparks.emit(10);
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			this.particles.leftClouds.emit(5);
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		}
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		this.particles.rightSparks.update(dt);
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		this.particles.rightClouds.update(dt);
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		this.particles.leftSparks.update(dt);
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		this.particles.leftClouds.update(dt);
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	}
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}
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