Chisel/src/main/java/com/cricketcraft/chisel/entity/EntitySmashingRock.java

package com.cricketcraft.chisel.entity;

import net.minecraft.block.Block;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.projectile.EntityThrowable;
import net.minecraft.init.Blocks;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.world.World;

import com.cricketcraft.chisel.utils.General;

public class EntitySmashingRock extends EntityThrowable {

	public EntitySmashingRock(World par1World) {
		super(par1World);
	}

	public EntitySmashingRock(World par1World, EntityLivingBase par2EntityLiving) {
		super(par1World, par2EntityLiving);
	}

	public EntitySmashingRock(World par1World, double x, double y, double z) {
		super(par1World, x, y, z);
	}

	@Override
	protected void onImpact(MovingObjectPosition movingobjectposition) {
		int x = movingobjectposition.blockX;
		int y = movingobjectposition.blockY;
		int z = movingobjectposition.blockZ;

		switch (movingobjectposition.sideHit) {
		case 0:
			y--;
			break;
		case 1:
			y++;
			break;
		case 2:
			z--;
			break;
		case 3:
			z++;
			break;
		case 4:
			x--;
			break;
		case 5:
			x++;
			break;
		}

		setDead();

		if (worldObj.isRemote) {
			worldObj.playSound(x, y, z, "chisel:squash", 1.0f, 1.0f, false);

			// for(int i = 0; i < 32; i++)
			// GeneralChiselClient.spawn

			return;
		}

		int radius = 5;
		int falloff = 3;

		for (int xx = -radius; xx < radius; xx++) {
			for (int yy = -radius; yy < radius; yy++) {
				for (int zz = -radius; zz < radius; zz++) {
					double dist = (xx < 0 ? -xx : xx) + (yy < 0 ? -yy : yy) + (zz < 0 ? -zz : zz);

					if (!(dist < falloff || General.rand.nextInt(radius * 3 - falloff) >= dist * 2))
						continue;

					if (!worldObj.isRemote)
						smash(worldObj, x + xx, y + yy, z + zz);
				}
			}
		}

	}

	public static void smash(World world, int x, int y, int z) {
		Block block = world.getBlock(x, y, z);
		int meta = world.getBlockMetadata(x, y, z);
		Block resBlock = block;
		int resMeta = meta;

		if (block.equals(Blocks.stone)) {
			resBlock = Blocks.cobblestone;
		} else if (block.equals(Blocks.stonebrick) && meta == 0) {
			resMeta = 2;
		} else if (block.equals(Blocks.cobblestone)) {
			resBlock = Blocks.gravel;
		} else if (block.equals(Blocks.gravel)) {
			resBlock = Blocks.sand;
		}

		if (resBlock.equals(block) && resMeta == meta)
			return;
		world.setBlock(x, y, z, resBlock, resMeta, 3);
	}

}