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path: root/src/main/java/darkknight/jewelrycraft/particles/EntityFlatShadowFX.java
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package darkknight.jewelrycraft.particles;

import org.lwjgl.opengl.GL11;

import net.minecraft.client.Minecraft;
import net.minecraft.client.particle.EntityFX;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.World;

public class EntityFlatShadowFX extends EntityFX {
	float			moteParticleScale;
	ResourceLocation	texture;

	/**
	 * @param world
	 * @param x
	 * @param y
	 * @param z
	 * @param size
	 * @param maxAge
	 * @param texture
	 */
	public EntityFlatShadowFX(World world, double x, double y,
			double z, float size, float maxAge,
			ResourceLocation texture) {
		super(world, x, y, z, 0D, 0D, 0D);
		particleMaxAge = (int) (28D / (Math.random() * 0.3D + 0.7D)
				* maxAge);
		particleGravity = 0F;
		motionX = motionY = motionZ = 0;
		particleScale = size;
		noClip = true;
		this.texture = texture;
		setSize(0.1F, 0.1F);
	}

	/**
	 * @param tessellator
	 * @param partialTicks
	 * @param minX
	 * @param minY
	 * @param minZ
	 * @param maxX
	 * @param maxZ
	 */
	@Override
	public void renderParticle(Tessellator tessellator,
			float partialTicks, float minX, float minY,
			float minZ, float maxX, float maxZ) {
		tessellator.draw();
		Minecraft.getMinecraft().renderEngine.bindTexture(texture);
		tessellator.startDrawingQuads();
		GL11.glEnable(GL11.GL_BLEND);
		GL11.glBlendFunc(GL11.GL_SRC_ALPHA,
				GL11.GL_ONE_MINUS_SRC_ALPHA);
		GL11.glDepthMask(false);
		float scale = 1F * particleScale;
		float x = (float) (posX - interpPosX);
		float y = (float) (posX - interpPosY);
		float z = (float) (posZ - interpPosZ);
		tessellator.setColorRGBA_F(0F, 0F, 0F, 1F);
		tessellator.addVertexWithUV(
				x - minX * scale - maxX * scale,
				y + minY * scale,
				z - minZ * scale - maxZ * scale, 0, 0);
		tessellator.addVertexWithUV(
				x - minX * scale + maxX * scale,
				y + minY * scale,
				z - minZ * scale + maxZ * scale, 1, 0);
		tessellator.addVertexWithUV(
				x + minX * scale + maxX * scale,
				y + minY * scale,
				z + minZ * scale + maxZ * scale, 1, 1);
		tessellator.addVertexWithUV(
				x + minX * scale - maxX * scale,
				y + minY * scale,
				z + minZ * scale - maxZ * scale, 0, 1);
		tessellator.draw();
		GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
		GL11.glDisable(GL11.GL_BLEND);
		GL11.glDepthMask(true);
		tessellator.startDrawingQuads();
	}

	/**
	 * 
	 */
	@Override
	public void onUpdate() {
		prevPosX = posX;
		prevPosY = posY;
		prevPosZ = posZ;
		motionX = motionY = motionZ = 0;
		if (particleAge++ >= particleMaxAge)
			setDead();
	}

	/**
	 * @return
	 */
	@Override
	public int getFXLayer() {
		return 0;
	}
}