How to code a selective nuker

        int var5000 = (int)mc.playerController.getBlockReachDistance();
        if(yourvarclass.yourvarmod)
        {
        	for(int x = -var5000; x < var5000 + 1; x++)
        	{
        		for(int z = -var5000; z < var5000 + 1; z++)
        		{
        			for(int y = -var5000; y < var5000 + 1; y++)
        			{
        				int e = (int) posX + x;
        				int f = (int) posY + y;
        				int g = (int) posZ + z;
        				if(mc.theWorld.getBlockId(e, f, g) == mods.blockID)
        				{
        					this.sendQueue.addToSendQueue(new Packet14BlockDig(0, e, f, g, 0));
        					this.sendQueue.addToSendQueue(new Packet14BlockDig(2, e, f, g, 0));
        				}
        			}
        		}
        	}
        }

        if(yourvarclass.yourvarmod)
        {
        	yourvarclass.blockID = mc.theWorld.getBlockId(par1, par2, par3);
        }