package electroblob.wizardry.client.particle;

import org.lwjgl.opengl.GL11;

import electroblob.wizardry.Wizardry;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.client.renderer.OpenGlHelper;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.World;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

@SideOnly(Side.CLIENT)
public class ParticleSpark extends ParticleCustomTexture {
	
	private static final ResourceLocation TEXTURE = new ResourceLocation(Wizardry.MODID, "textures/particle/lightning_particles.png");
	
    public ParticleSpark(World world, double x, double y, double z, double vx, double vy, double vz){
    	// Max age is always 3.
        super(world, x, y, z, vx, vy, vz, 3);
    }
    
    @Override
    public void init(){
    	// Multiplied by 4 because the index works slightly differently for spark particles.
        this.setParticleTextureIndex(rand.nextInt(8)*4);
        this.particleScale *= 1.4f;
        this.fullBrightness = true;
        this.canCollide = false;
    }

    @Override
    public void onUpdate(){
        super.onUpdate();
        // Well this is handy! Looks like vanilla uses the texture index like this too.
        this.nextTextureIndexX();
    }
    
	@Override public ResourceLocation getTexture(){ return TEXTURE; }
	@Override protected int getXFrames(){ return 4; }
	@Override protected int getYFrames(){ return 8; }
    
    @Override
    public void applyGLStateChanges(){
    	GlStateManager.enableBlend();
    	GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
    	// TESTME: Are these two actually necessary?
    	GlStateManager.disableLighting();
        OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240, 240);
    }
    
    @Override
    public void undoGLStateChanges(){
    	GlStateManager.disableBlend();
    	GlStateManager.enableLighting();
    }
    
}