OreDetector.java

package vazkii.oredetector;

import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.StringSelection;
import java.util.HashMap;
import java.util.Map;

import net.minecraft.block.Block;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraftforge.oredict.OreDictionary;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.Mod.EventHandler;
import cpw.mods.fml.common.event.FMLPostInitializationEvent;
import cpw.mods.fml.common.event.FMLPreInitializationEvent;
import cpw.mods.fml.common.registry.GameRegistry;

@Mod(modid = "oreDetector")
public class OreDetector {

	@EventHandler
	public void preInit(FMLPreInitializationEvent event) {
		new ItemOreDetector();
		OreDictionary.registerOre("oreCoal", Block.oreCoal);
	}

	@EventHandler
	public void postInit(FMLPostInitializationEvent event) {
		for(BiomeGenBase biome : BiomeGenBase.biomeList)
			if(biome != BiomeGenBase.extremeHills)
				GameRegistry.removeBiome(biome);
	}

	class ItemOreDetector extends Item {

		public ItemOreDetector() {
			super(15555);
			setUnlocalizedName("oredetector");
		}

		@Override
		public ItemStack onItemRightClick(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer) {
			Map<String, Integer> ores = new HashMap();

			int chunks = 256;
			int range = (int) Math.sqrt(chunks);

			for(int x = 0; x < (16 * range); x++)
				for(int y = 0; y < 128; y++)
					for(int z = 0; z < (16 * range); z++) {
						int id = par2World.getBlockId(x, y, z);
						int meta = par2World.getBlockMetadata(x, y, z);
						Block block = Block.blocksList[id];
						if(block != null) {
							String oredict = OreDictionary.getOreName(OreDictionary.getOreID(new ItemStack(block, 1, meta)));
							if(oredict.toLowerCase().contains("ore")) {
								int count = ores.containsKey(oredict) ? ores.get(oredict) : 0;
								ores.put(oredict, count + 1);
							}
						}
					}

			String selectionStr = "Chunks checked: " + chunks + "\n\n";
			for(String s : ores.keySet())
				selectionStr = selectionStr + s + " = " + ores.get(s) + " (avg " + ((double) ores.get(s) / (double) chunks) + " per chunk)\n";

			StringSelection selection = new StringSelection(selectionStr);
			Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
			clipboard.setContents(selection, selection);

			par3EntityPlayer.addChatMessage("Results copied to clipboard.");

			return par1ItemStack;
		}
	}
}