Connected Texture Manager

AAConnectedTextureManager.java

package izzyaxel.arcaneartificing.main.helpers;

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

@SuppressWarnings("all")
public class AAConnectedTextureManager
{
	private static AAConnectedTextureManager INSTANCE = new AAConnectedTextureManager();

	/**
	 * Get the manager instance
	 * @return Returns the singleton instance of the Connected Texture Manager
	 */
	public static AAConnectedTextureManager getManager()
	{
		return INSTANCE;
	}

	private boolean shouldTextureConnect(IBlockAccess world, int x, int y, int z, Block block, int dir)
	{
		//0 - Bottom, y neg
		//1 - Top, y pos
		//2 - North, z neg
		//3 = South, z pos
		//4 - West, x neg
		//5 - East, x pos
		switch(dir)
		{
			case 0: return world.getBlock(x, y - 1, z) == block;
			case 1: return world.getBlock(x, y + 1, z) == block;
			case 2: return world.getBlock(x, y, z - 1) == block;
			case 3: return world.getBlock(x, y, z + 1) == block;
			case 4: return world.getBlock(x - 1, y, z) == block;
			case 5: return world.getBlock(x + 1, y, z) == block;
			default: return false;
		}
	}

	/**
	 * Gets the appropriate IIcon texture for the given side based on the blocks surrounding the current one<br><br>
	 * Use this in conjunction with {@link Block#shouldSideBeRendered(IBlockAccess, int, int, int, int)} for transparent blocks<br><br>
	 * Follow this format for Block texture permutations:<br>
	 * 0 - None Connected<br>
	 * 1 - Up Connected<br>
	 * 2 - Right Connected<br>
	 * 3 - Down Connected<br>
	 * 4 - Left Connected<br>
	 * 5 - Up & Right Connected<br>
	 * 6 - Up, Right & Down Connected<br>
	 * 7 - Right & Down Connected<br>
	 * 8 - Right, Down & Left Connected<br>
	 * 9 - Down & Left Connected<br>
	 * 10 - Down, Left & Up Connected<br>
	 * 11 - Left & Up Connected<br>
	 * 12 - Left, Up & Right Connected<br>
	 * 13 - Up & Down Connected<br>
	 * 14 - Right & Left Connected<br>
	 * 15 - All Connected<br><br>
	 * Override {@link Block#getIcon(int, int)} to return a constant icon index to be used for the inventory render's texture<br>
	 * Override {@link Block#getIcon(IBlockAccess, int, int, int, int)} to call this method, such as:
	 * <br><br>return AAConnectedTextureManager.getManager().getIconForSide(iblockAccess, x, y, z, side, this#IIconArray, YourBlocks#blockInstance);<br><br>
	 * And finally, override {@link Block#registerBlockIcons(IIconRegister)} to register the 16 icons required.<br><br>
	 * @param world IBlockAccess, pass in from {@link Block#getIcon(IBlockAccess, int, int, int, int)}
	 * @param x X coordinate of the block to check, pass in from {@link Block#getIcon(IBlockAccess, int, int, int, int)}
	 * @param y Y coordinate of the block to check, pass in from {@link Block#getIcon(IBlockAccess, int, int, int, int)}
	 * @param z Z coordinate of the block to check, pass in from {@link Block#getIcon(IBlockAccess, int, int, int, int)}
	 * @param side Side of the block to check, pass in from {@link Block#getIcon(IBlockAccess, int, int, int, int)}
	 * @param icons IIcon array, must have a length of 16 or it'll cause crashes
	 * @param block Block to check against
	 * @return Returns an index in the passed in IIcon array, which contains the texture suited for the side passed in based on the surrounding blocks
	 */
	public IIcon getIconForSide(IBlockAccess world, int x, int y, int z, int side, IIcon[] icons, Block block)
	{
		boolean up, down, north, south, east, west;
		down = this.shouldTextureConnect(world, x, y, z, block, 0);
		up = this.shouldTextureConnect(world, x, y, z, block, 1);
		north = this.shouldTextureConnect(world, x, y, z, block, 2);
		south = this.shouldTextureConnect(world, x, y, z, block, 3);
		west = this.shouldTextureConnect(world, x, y, z, block, 4);
		east = this.shouldTextureConnect(world, x, y, z, block, 5);

		//If no valid blocks are adjacent to this one
		if(!up && !down && !north && !south && !east && !west)
		{
			return icons[0];
		}

		//If there are valid blocks surrounding this one, texture doesn't matter for opaque blocks, shouldn't be rendered on transparent ones
		if(up && down && north && south && east && west)
		{
			return icons[15];
		}

		switch(side)
		{
			case 0:
				if(!north && !south && !east && !west)
				{
					return icons[0];
				}
				else if(north && !south && !east && !west)
				{
					return icons[1];
				}
				else if(!north && !south && east && !west)
				{
					return icons[2];
				}
				else if(!north && south && !east && !west)
				{
					return icons[3];
				}
				else if(!north && !south && !east && west)
				{
					return icons[4];
				}
				else if(north && !south && east && !west)
				{
					return icons[5];
				}
				else if(north && south && east && !west)
				{
					return icons[6];
				}
				else if(!north && south && east && !west)
				{
					return icons[7];
				}
				else if(!north && south && east && west)
				{
					return icons[8];
				}
				else if(!north && south && !east && west)
				{
					return icons[9];
				}
				else if(north && south && !east && west)
				{
					return icons[10];
				}
				else if(north && !south && !east && west)
				{
					return icons[11];
				}
				else if(north && !south && east && west)
				{
					return icons[12];
				}
				else if(north && south && !east && !west)
				{
					return icons[13];
				}
				else if(!north && !south && west && east)
				{
					return icons[14];
				}
				else if(north && south && east && west)
				{
					return icons[15];
				}
			case 1:
				if(!north && !south && !east && !west)
				{
					return icons[0];
				}
				else if(north && !south && !east && !west)
				{
					return icons[1];
				}
				else if(!north && !south && east && !west)
				{
					return icons[2];
				}
				else if(!north && south && !east && !west)
				{
					return icons[3];
				}
				else if(!north && !south && !east && west)
				{
					return icons[4];
				}
				else if(north && !south && east && !west)
				{
					return icons[5];
				}
				else if(north && south && east && !west)
				{
					return icons[6];
				}
				else if(!north && south && east && !west)
				{
					return icons[7];
				}
				else if(!north && south && east && west)
				{
					return icons[8];
				}
				else if(!north && south && !east && west)
				{
					return icons[9];
				}
				else if(north && south && !east && west)
				{
					return icons[10];
				}
				else if(north && !south && !east && west)
				{
					return icons[11];
				}
				else if(north && !south && east && west)
				{
					return icons[12];
				}
				else if(north && south && !east && !west)
				{
					return icons[13];
				}
				else if(!north && !south && west && east)
				{
					return icons[14];
				}
				else if(north && south && east && west)
				{
					return icons[15];
				}
			case 2:
				if(!up && !down && !east && !west)
				{
					return icons[0];
				}
				else if(up && !down && !east && !west)
				{
					return icons[1];
				}
				else if(!up && !down && !east && west)
				{
					return icons[2];
				}
				else if(!up && down && !east && !west)
				{
					return icons[3];
				}
				else if(!up && !down && east && !west)
				{
					return icons[4];
				}
				else if(up && !down && !east && west)
				{
					return icons[5];
				}
				else if(up && down && !east && west)
				{
					return icons[6];
				}
				else if(!up && down && !east && west)
				{
					return icons[7];
				}
				else if(!up && down && east && west)
				{
					return icons[8];
				}
				else if(!up && down && east && !west)
				{
					return icons[9];
				}
				else if(up && down && east && !west)
				{
					return icons[10];
				}
				else if(up && !down && east && !west)
				{
					return icons[11];
				}
				else if(up && !down && east && west)
				{
					return icons[12];
				}
				else if(up && down && !east && !west)
				{
					return icons[13];
				}
				else if(!up && !down && east && west)
				{
					return icons[14];
				}
				else if(up && down && east && west)
				{
					return icons[15];
				}
			case 3:
				if(!up && !down && !east && !west)
				{
					return icons[0];
				}
				else if(up && !down && !east && !west)
				{
					return icons[1];
				}
				else if(!up && !down && east && !west)
				{
					return icons[2];
				}
				else if(!up && down && !east && !west)
				{
					return icons[3];
				}
				else if(!up && !down && !east && west)
				{
					return icons[4];
				}
				else if(up && !down && east && !west)
				{
					return icons[5];
				}
				else if(up && down && east && !west)
				{
					return icons[6];
				}
				else if(!up && down && east && !west)
				{
					return icons[7];
				}
				else if(!up && down && east && west)
				{
					return icons[8];
				}
				else if(!up && down && !east && west)
				{
					return icons[9];
				}
				else if(up && down && !east && west)
				{
					return icons[10];
				}
				else if(up && !down && !east && west)
				{
					return icons[11];
				}
				else if(up && !down && east && west)
				{
					return icons[12];
				}
				else if(up && down && !east && !west)
				{
					return icons[13];
				}
				else if(!up && !down && east && west)
				{
					return icons[14];
				}
				else if(up && down && east && west)
				{
					return icons[15];
				}
			case 4:
				if(!up && !down && !north && !south)
				{
					return icons[0];
				}
				else if(up && !down && !north && !south)
				{
					return icons[1];
				}
				else if(!up && !down && !north && south)
				{
					return icons[2];
				}
				else if(!up && down && !north && !south)
				{
					return icons[3];
				}
				else if(!up && !down && north && !south)
				{
					return icons[4];
				}
				else if(up && !down && !north && south)
				{
					return icons[5];
				}
				else if(up && down && !north && south)
				{
					return icons[6];
				}
				else if(!up && down && !north && south)
				{
					return icons[7];
				}
				else if(!up && down && north && south)
				{
					return icons[8];
				}
				else if(!up && down && north && !south)
				{
					return icons[9];
				}
				else if(up && down && north && !south)
				{
					return icons[10];
				}
				else if(up && !down && north && !south)
				{
					return icons[11];
				}
				else if(up && !down && north && south)
				{
					return icons[12];
				}
				else if(up && down && !north && !south)
				{
					return icons[13];
				}
				else if(!up && !down && north && south)
				{
					return icons[14];
				}
				else if(up && down && north && south)
				{
					return icons[15];
				}
			case 5:
				if(!up && !down && !north && !south)
				{
					return icons[0];
				}
				else if(up && !down && !north && !south)
				{
					return icons[1];
				}
				else if(!up && !down && north && !south)
				{
					return icons[2];
				}
				else if(!up && down && !north && !south)
				{
					return icons[3];
				}
				else if(!up && !down && !north && south)
				{
					return icons[4];
				}
				else if(up && !down && north && !south)
				{
					return icons[5];
				}
				else if(up && down && north && !south)
				{
					return icons[6];
				}
				else if(!up && down && north && !south)
				{
					return icons[7];
				}
				else if(!up && down && north && south)
				{
					return icons[8];
				}
				else if(!up && down && !north && south)
				{
					return icons[9];
				}
				else if(up && down && !north && south)
				{
					return icons[10];
				}
				else if(up && !down && !north && south)
				{
					return icons[11];
				}
				else if(up && !down && north && south)
				{
					return icons[12];
				}
				else if(up && down && !north && !south)
				{
					return icons[13];
				}
				else if(!up && !down && north && south)
				{
					return icons[14];
				}
				else if(up && down && north && south)
				{
					return icons[15];
				}
			default: return icons[0];
		}
	}
}