Chisel/src/main/java/com/cricketcraft/chisel/client/render/RendererLayeredGlow.java

package com.cricketcraft.chisel.client.render;

import net.minecraft.block.Block;
import net.minecraft.client.renderer.RenderBlocks;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.world.IBlockAccess;

import org.lwjgl.opengl.GL11;

import com.cricketcraft.chisel.Chisel;
import com.cricketcraft.chisel.block.BlockCarvableGlow;
import com.cricketcraft.chisel.config.Configurations;
import com.cricketcraft.chisel.utils.GeneralClient;
import com.cricketcraft.ctmlib.Drawing;
import com.cricketcraft.ctmlib.RenderBlocksCTM;

import cpw.mods.fml.client.registry.ISimpleBlockRenderingHandler;
import cpw.mods.fml.client.registry.RenderingRegistry;

public class RendererLayeredGlow implements ISimpleBlockRenderingHandler {

	public RendererLayeredGlow() {
		Chisel.renderGlowId = RenderingRegistry.getNextAvailableRenderId();
	}

	@Override
	public void renderInventoryBlock(Block block, int metadata, int modelId, RenderBlocks renderer) {
		GL11.glTranslatef(-0.5F, -0.5F, -0.5F);
		GeneralClient.setGLColorFromInt(Configurations.configColors[metadata]);
		GL11.glDisable(GL11.GL_LIGHTING);
		Drawing.drawBlock(block, ((BlockCarvableGlow)block).getGlowTexture(), renderer);
		GL11.glEnable(GL11.GL_LIGHTING);
		GL11.glColor3f(1, 1, 1);
		Drawing.drawBlock(block, metadata, renderer);
		GL11.glTranslatef(0.5F, 0.5F, 0.5F);
	}

	@Override
	public boolean renderWorldBlock(IBlockAccess world, int x, int y, int z, Block block, int modelId, RenderBlocks renderer) {
		Tessellator.instance.setColorOpaque_I(Configurations.configColors[world.getBlockMetadata(x, y, z)]);
		Tessellator.instance.setBrightness(0xF000F0);
		BlockCarvableGlow glow = (BlockCarvableGlow) block;
		if(glow.hasSubmapManager()){
			renderer.overrideBlockTexture = glow.getGlowTexture();
			getContext(renderer, glow, world).renderBlockAllFaces(glow, x, y, z);
		} else {
			Drawing.renderAllFaces(renderer, block, x, y, z, ((BlockCarvableGlow) block).getGlowTexture());
		}
		renderer.renderStandardBlock(block, x, y, z);
		return true;
	}

	private RenderBlocks getContext(RenderBlocks rendererOld, BlockCarvableGlow block, IBlockAccess world) {
		if (!rendererOld.hasOverrideBlockTexture() && block != null) {
			RenderBlocks rb = block.getSubmapManager().createRenderContext(rendererOld, block, world);
			if (rb != null && rb != rendererOld) {
				rb.blockAccess = world;
				if (rb instanceof RenderBlocksCTM) {
					RenderBlocksCTM rbctm = (RenderBlocksCTM) rb;
					rbctm.manager = rbctm.manager == null ? block.getSubmapManager() : rbctm.manager;
					rbctm.rendererOld = rbctm.rendererOld == null ? rendererOld : rbctm.rendererOld;
				}
				return rb;
			}
		}
		return rendererOld;
	}
	
	@Override
	public boolean shouldRender3DInInventory(int modelId) {
		return true;
	}

	@Override
	public int getRenderId() {
		return Chisel.renderGlowId;
	}
}