BlockEngine.java

package buildcraft.core;

import java.util.List;

import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;

import buildcraft.core.lib.engines.BlockEngineBase;
import buildcraft.core.lib.engines.TileEngineBase;

public class BlockEngine extends BlockEngineBase {
	private final Class[] engineTiles;
	private final String[] names;
	private final String[] texturePaths;

	public BlockEngine() {
		super();
		setBlockName("engineBlock");

		engineTiles = new Class[16];
		names = new String[16];
		texturePaths = new String[16];
	}

	@Override
	public String getTexturePrefix(int meta, boolean addPrefix) {
		if (texturePaths[meta] != null) {
			if (addPrefix) {
				return texturePaths[meta].replaceAll(":", ":textures/blocks/");
			} else {
				return texturePaths[meta];
			}
		} else {
			return null;
		}
	}

	@Override
	public String getUnlocalizedName(int metadata) {
		return names[metadata] != null ? names[metadata] : "unknown";
	}

	public void registerTile(Class<? extends TileEngineBase> engineTile, int meta, String name, String texturePath) {
		if (BCRegistry.INSTANCE.isEnabled("engines", name)) {
			engineTiles[meta] = engineTile;
			names[meta] = name;
			texturePaths[meta] = texturePath;
		}
	}

	@Override
	public TileEntity createTileEntity(World world, int metadata) {
	    if (engineTiles[metadata] == null) {
	        return null;
	    }
		try {
			return (TileEntity) engineTiles[metadata].newInstance();
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	@SuppressWarnings({"unchecked", "rawtypes"})
	@Override
	public void getSubBlocks(Item item, CreativeTabs par2CreativeTabs, List itemList) {
		for (int i = 0; i < 16; i++) {
			if (engineTiles[i] != null) {
				itemList.add(new ItemStack(this, 1, i));
			}
		}
	}

	@Override
	public boolean hasEngine(int meta) {
		return engineTiles[meta] != null;
	}
}