Chisel/src/main/java/info/jbcs/minecraft/chisel/entity/EntityBallOMossFX.java

package info.jbcs.minecraft.chisel.entity;

import info.jbcs.minecraft.chisel.Chisel;
import info.jbcs.minecraft.chisel.block.BlockSnakestoneObsidian;
import info.jbcs.minecraft.utilities.General;
import net.minecraft.client.particle.EntityFX;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.util.IIcon;
import net.minecraft.world.World;

import org.lwjgl.opengl.GL11;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class EntityBallOMossFX extends EntityFX
{
    BlockSnakestoneObsidian block;
    double tx, ty, tz;
    double speed;

    float u0, u1, v0, v1;
    IIcon icon;
    IIcon iconPlus = new IIcon()
    {

        @Override
        @SideOnly(Side.CLIENT)
        public int getIconWidth()
        {
            return 0;
        }

        @Override
        @SideOnly(Side.CLIENT)
        public int getIconHeight()
        {
            return 0;
        }

        @Override
        @SideOnly(Side.CLIENT)
        public float getMinU()
        {
            return u0;
        }

        @Override
        @SideOnly(Side.CLIENT)
        public float getMaxU()
        {
            return u1;
        }

        @Override
        @SideOnly(Side.CLIENT)
        public float getInterpolatedU(double d0)
        {
            return (float) (u0 + d0 * (u1 - u0) / 16.0f);
        }

        @Override
        @SideOnly(Side.CLIENT)
        public float getMinV()
        {
            return v0;
        }

        @Override
        @SideOnly(Side.CLIENT)
        public float getMaxV()
        {
            return v1;
        }

        @Override
        @SideOnly(Side.CLIENT)
        public float getInterpolatedV(double d0)
        {
            return (float) (v0 + d0 * (v1 - v0) / 16.0f);
        }

        @Override
        @SideOnly(Side.CLIENT)
        public String getIconName()
        {
            return "";
        }

    };

    public EntityBallOMossFX(World world, double x, double y, double z)
    {
        super(world, x, y + 0.5, z, 0, 0, 0);

        particleScale = 0.5f + 0.5f * General.rand.nextFloat();
        speed = 0.4 + 0.4 * General.rand.nextDouble();

        particleMaxAge = (int) (General.rand.nextDouble() * 10.0) + 5;
        if(General.rand.nextInt(10) == 0)
            particleMaxAge += General.rand.nextDouble() * 40.0;

        motionX = (General.rand.nextDouble() - 0.5) * 0.7;
        motionY = (General.rand.nextDouble() * 0.5) * 0.7;
        motionZ = (General.rand.nextDouble() - 0.5) * 0.7;
        particleGravity = 2.0f;

//		setParticleIcon(block.particles[General.rand.nextInt(block.particles.length)]);

        icon = Chisel.itemBallOMoss.getIconFromDamage(0);
        float width = 4.0f + General.rand.nextFloat() * 8.0f;
        float uu = General.rand.nextFloat() * (16.0f - width);
        float vv = General.rand.nextFloat() * (16.0f - width);
        u0 = icon.getInterpolatedU(uu);
        u1 = icon.getInterpolatedU(uu + width);
        v0 = icon.getInterpolatedV(vv);
        v1 = icon.getInterpolatedV(vv + width);

        setParticleIcon(iconPlus);
    }

    @Override
    public int getFXLayer()
    {
        return 2;
    }

    @Override
    public void renderParticle(Tessellator tessellator, float partialTick, float rotX, float rotXZ, float rotZ, float rotYZ, float rotXY)
    {
        GL11.glDepthMask(false);
        GL11.glEnable(3042);
        GL11.glBlendFunc(770, 771);
        super.renderParticle(tessellator, partialTick, rotX, rotXZ, rotZ, rotYZ, rotXY);
    }

    @Override
    public void onUpdate()
    {
        super.onUpdate();

        double remaining = particleMaxAge - particleAge;

        if(remaining < 5)
        {
            particleAlpha = (float) (remaining / 5.0);
        } else
        {
            particleAlpha = 1.0f;
        }
    }

}