package shootergame.entity.particle;

import java.util.Random;

import shootergame.display.Camera;
import shootergame.entity.EntityParticle;
import shootergame.util.gl.GlHelpers;
import shootergame.util.math.MathHelpers;
import shootergame.util.math.random.RandomHelpers;
import shootergame.util.math.vec.Vec2d;
import shootergame.util.math.vec.Vec2i;
import shootergame.world.chunk.Chunk;
import shootergame.world.layer.Layer;

public class ParticleBlood extends EntityParticle
{
	private double r_color;
	private double speed = 0.1;
	private double time = 1000;
	private double height = 0;
	private double height_velocity = 0;
	
	public ParticleBlood(Random rand, Vec2d pos, double angle) {
		super(rand.nextDouble() / 5, 0);
		
		this.pos = pos;
		this.angle = angle + RandomHelpers.randrange(rand, -100, 100);
		this.speed = rand.nextDouble() / 10;
		this.height = rand.nextDouble();
		this.height_velocity = rand.nextDouble() / 10;
		this.pos.x += 0.5;
		this.pos.y += 0.5;
		r_color = RandomHelpers.randrange(rand, 200, 800) / 1000.0;
	}
	
	@Override
	public void tick(Chunk chunk, Layer layer)
	{
		// Call super
		super.tick(chunk, layer);
		
		// Move in the velocity and remove some of it
		moveBackward(speed);
		height += height_velocity;
		speed /= 1.05;
		height_velocity -= 0.001;
		if(height < 0) {
			height = 0;
			height_velocity = 0;
		}
		
		// Remove some time
		time -= 1;
		
		// Should this particle too old; destroy it
		if(time < 0) chunk.killEntity(this);
	}
	
	@Override
	public void render(Vec2d pos, Camera camera)
	{
		// Get the light level
		double light = chunk.getLightLevel(new Vec2i(
				MathHelpers.floor(pos.x), MathHelpers.floor(pos.y)));
		
		// Set some settings
		GlHelpers.pushMatrix();
		GlHelpers.color3(r_color * light, 0, 0);
		GlHelpers.translate(0, 0, height);
		
		// Call super
		super.render(pos, camera);
		GlHelpers.color3(1, 1, 1);
		GlHelpers.popMatrix();
	}
}