ModBlockDispenser.java

package vazkii.blockdispenser;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;

import com.google.common.collect.ImmutableSet;

import net.minecraft.block.Block;
import net.minecraft.block.BlockDirectional;
import net.minecraft.block.BlockDispenser;
import net.minecraft.block.BlockHorizontal;
import net.minecraft.block.BlockLog;
import net.minecraft.block.BlockLog.EnumAxis;
import net.minecraft.block.BlockQuartz;
import net.minecraft.block.BlockRotatedPillar;
import net.minecraft.block.BlockStairs;
import net.minecraft.block.SoundType;
import net.minecraft.block.properties.IProperty;
import net.minecraft.block.state.IBlockState;
import net.minecraft.dispenser.BehaviorDefaultDispenseItem;
import net.minecraft.dispenser.IBlockSource;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemStack;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.EnumFacing.Axis;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.SoundCategory;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.common.config.Configuration;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.Mod.EventHandler;
import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;

@Mod(modid = "BlockDispenser", name = "BlockDispenser", version = "1.0")
public class ModBlockDispenser {

	List<String> blacklist;

	@EventHandler
	public void preInit(FMLPreInitializationEvent event) {
		Configuration config = new Configuration(event.getSuggestedConfigurationFile());

		String[] blacklist = config.getStringList("blacklist", Configuration.CATEGORY_GENERAL, new String[] {
				"minecraft:water",
				"minecraft:flowing_water",
				"minecraft:lava",
				"minecraft:flowing_lava",
				"minecraft:fire",
				"minecraft:web"
		}, "");

		this.blacklist = Arrays.asList(blacklist);

		if(config.hasChanged())
			config.save();
	}

	@EventHandler
	public void postInit(FMLPostInitializationEvent event) {
		for(ResourceLocation r : Block.REGISTRY.getKeys()) {
			Block block = Block.REGISTRY.getObject(r);
			Item item = Item.getItemFromBlock(block);

			if(block == null || item == null || !(item instanceof ItemBlock) || blacklist.contains(r.toString()))
				continue;

			if(!BlockDispenser.DISPENSE_BEHAVIOR_REGISTRY.containsKey(item))
				BlockDispenser.DISPENSE_BEHAVIOR_REGISTRY.putObject(item, new BehaviourBlock((ItemBlock) item, block));
		}
	}

	public class BehaviourBlock extends BehaviorDefaultDispenseItem {

		ItemBlock item;
		Block block;

		public BehaviourBlock(ItemBlock item, Block block) {
			this.item = item;
			this.block = block;
		}

		@Override
		public ItemStack dispenseStack(IBlockSource par1IBlockSource, ItemStack par2ItemStack) {
			EnumFacing facing = par1IBlockSource.func_189992_e().getValue(BlockDispenser.FACING);
			Axis axis = facing.getAxis();

			BlockPos pos = par1IBlockSource.getBlockPos().offset(facing);
			World world = par1IBlockSource.getWorld();

			if(world.isAirBlock(pos) && block.canPlaceBlockAt(world, pos)) {
				int meta = item.getMetadata(par2ItemStack.getItemDamage());
				IBlockState state = block.getStateFromMeta(meta);
				Collection<IProperty<?>> props = state.getPropertyNames();

				if(props.contains(BlockDirectional.FACING))
					state = state.withProperty(BlockDirectional.FACING, facing);
				else if(props.contains(BlockHorizontal.FACING) && axis != Axis.Y)
					state = state.withProperty(BlockHorizontal.FACING, facing);
				else if(props.contains(BlockRotatedPillar.AXIS))
					state = state.withProperty(BlockRotatedPillar.AXIS, axis);

				// fuck yeah special cases

				if(block instanceof BlockStairs)
					state = state.withProperty(BlockHorizontal.FACING, facing.getOpposite());

				if(block instanceof BlockLog)
					state = state.withProperty(BlockLog.LOG_AXIS, BlockLog.LOG_AXIS.parseValue(axis.getName()).or(EnumAxis.NONE));

				if(block instanceof BlockQuartz) {
					BlockQuartz.EnumType type = state.getValue(BlockQuartz.VARIANT);
					if(ImmutableSet.of(BlockQuartz.EnumType.LINES_X, BlockQuartz.EnumType.LINES_Y, BlockQuartz.EnumType.LINES_Z).contains(type))
						state = state.withProperty(BlockQuartz.VARIANT, BlockQuartz.VARIANT.parseValue("lines_" + axis.getName()).or(BlockQuartz.EnumType.LINES_Y));
				}


				world.setBlockState(pos, state);
				SoundType soundtype = block.getSoundType();
				world.playSound(null, pos, soundtype.getPlaceSound(), SoundCategory.BLOCKS, (soundtype.getVolume() + 1.0F) / 2.0F, soundtype.getPitch() * 0.8F);
				par2ItemStack.stackSize--;
				return par2ItemStack;
			}

			return super.dispenseStack(par1IBlockSource, par2ItemStack);
		}

	}

}