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

package com.cricketcraft.chisel.client.render;

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

public class RenderBlocksColumn extends RenderBlocks
{
    TextureSubmap submap;
    IIcon iconTop;
    IIcon sides[] = new IIcon[6];

    RenderBlocksColumn()
    {
        super();
    }

    boolean connected(IBlockAccess world, int x, int y, int z, Block block, int meta)
    {
        return world.getBlock(x, y, z).equals(block) && world.getBlockMetadata(x, y, z) == meta;
    }

    @Override
    public boolean renderStandardBlock(Block block, int x, int y, int z)
    {
        int metadata = blockAccess.getBlockMetadata(x, y, z);

        boolean yp = connected(blockAccess, x, y + 1, z, block, metadata);
        boolean yn = connected(blockAccess, x, y - 1, z, block, metadata);

        if(yp || yn)
        {
            sides[0] = iconTop;
            sides[1] = iconTop;

            if(yp && yn)
                sides[2] = submap.icons[2];
            else if(yp)
                sides[2] = submap.icons[3];
            else
                sides[2] = submap.icons[1];

            sides[3] = sides[4] = sides[5] = sides[2];
        } else
        {
            boolean xp = connected(blockAccess, x + 1, y, z, block, metadata);
            boolean xn = connected(blockAccess, x - 1, y, z, block, metadata);

            if(xp && (connected(blockAccess, x + 1, y + 1, z, block, metadata) || connected(blockAccess, x + 1, y - 1, z, block, metadata)))
                xp = false;
            if(xn && (connected(blockAccess, x - 1, y + 1, z, block, metadata) || connected(blockAccess, x - 1, y - 1, z, block, metadata)))
                xn = false;

            if(xp || xn)
            {
                uvRotateEast = 2;
                uvRotateWest = 1;
                uvRotateTop = 1;
                uvRotateBottom = 1;

                sides[4] = iconTop;
                sides[5] = iconTop;

                if(xp && xn)
                    sides[0] = submap.icons[2];
                else if(xp)
                    sides[0] = submap.icons[3];
                else
                    sides[0] = submap.icons[1];

                sides[1] = sides[2] = sides[3] = sides[0];
            } else
            {
                boolean zp = connected(blockAccess, x, y, z + 1, block, metadata);
                boolean zn = connected(blockAccess, x, y, z - 1, block, metadata);

                if(zp && (connected(blockAccess, x, y + 1, z + 1, block, metadata) || connected(blockAccess, x, y - 1, z + 1, block, metadata)))
                    zp = false;
                if(zp && (connected(blockAccess, x + 1, y, z + 1, block, metadata) || connected(blockAccess, x - 1, y, z + 1, block, metadata)))
                    zp = false;
                if(zn && (connected(blockAccess, x, y + 1, z - 1, block, metadata) || connected(blockAccess, x, y - 1, z - 1, block, metadata)))
                    zn = false;
                if(zn && (connected(blockAccess, x + 1, y, z - 1, block, metadata) || connected(blockAccess, x - 1, y, z - 1, block, metadata)))
                    zn = false;

                if(zp || zn)
                {
                    uvRotateSouth = 1;
                    uvRotateNorth = 2;

                    sides[2] = iconTop;
                    sides[3] = iconTop;

                    if(zp && zn)
                        sides[0] = submap.icons[2];
                    else if(zp)
                        sides[0] = submap.icons[1];
                    else
                        sides[0] = submap.icons[3];

                    sides[1] = sides[4] = sides[5] = sides[0];
                } else
                {
                    sides[0] = sides[1] = iconTop;
                    sides[2] = sides[3] = sides[4] = sides[5] = submap.icons[0];
                }
            }
        }


        boolean flag = super.renderStandardBlock(block, x, y, z);

        uvRotateSouth = 0;
        uvRotateEast = 0;
        uvRotateWest = 0;
        uvRotateNorth = 0;
        uvRotateTop = 0;
        uvRotateBottom = 0;

        return flag;
    }


    @Override
    public void renderFaceXNeg(Block block, double x, double y, double z, IIcon icon)
    {
        super.renderFaceXNeg(block, x, y, z, sides[4]);
    }

    @Override
    public void renderFaceXPos(Block block, double x, double y, double z, IIcon icon)
    {
        super.renderFaceXPos(block, x, y, z, sides[5]);
    }

    @Override
    public void renderFaceZNeg(Block block, double x, double y, double z, IIcon icon)
    {
        super.renderFaceZNeg(block, x, y, z, sides[2]);
    }


    @Override
    public void renderFaceZPos(Block block, double x, double y, double z, IIcon icon)
    {
        super.renderFaceZPos(block, x, y, z, sides[3]);
    }

    @Override
    public void renderFaceYNeg(Block block, double x, double y, double z, IIcon icon)
    {
        super.renderFaceYNeg(block, x, y, z, sides[0]);
    }

    @Override
    public void renderFaceYPos(Block block, double x, double y, double z, IIcon icon)
    {
        super.renderFaceYPos(block, x, y, z, sides[1]);
    }

}