Lesson 18: Swords and Sorcery

import mcpi.minecraft as minecraft
import mcpi.block as block
import time

mc = minecraft.Minecraft.create()

counter = 1

while(True):

	time.sleep(.2)

	hits = mc.events.pollBlockHits()
	
	for hit in hits:
		x = hit.pos.x
		y = hit.pos.y
		z = hit.pos.z
	
		blockType = mc.getBlock(x,y,z)
		if blockType == 57:
			mc.setBlock(x,y,z,152)
			mc.postToChat("Block replaced")