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#!/usr/bin/env python

#www.stuffaboutcode.com
#Raspberry Pi, Minecraft - hide and seek

# mcpipy.com retrieved from URL below, written by stuffaboutcode
# http://www.stuffaboutcode.com/2013/01/raspberry-pi-minecraft-hide-and-seek.html

#import the minecraft.py module from the minecraft directory
import mcpi.minecraft as minecraft
#import minecraft block module
import mcpi.block as block
#import time, so delays can be used
import time
#import random module to create random number
import random
#import math module to use square root function
import math


#function to round players float position to integer position
def roundVec3(vec3):
    return minecraft.Vec3(int(vec3.x), int(vec3.y), int(vec3.z))

def distanceBetweenPoints(point1, point2):
    xd = point2.x - point1.x
    yd = point2.y - point1.y
    zd = point2.z - point1.z
    return math.sqrt((xd*xd) + (yd*yd) + (zd*zd))
  
if __name__ == "__main__":

    #Connect to minecraft by creating the minecraft object
    # - minecraft needs to be running and in a game
    mc = minecraft.Minecraft.create()

    #Post a message to the minecraft chat window
    mc.postToChat("Hi, Minecraft Hide & Seek")

    time.sleep(2)
  
    #Find the players position
    playerPos = mc.player.getPos()
  
    #Create random position within 50 blocks from the player, our hidden block will go there
    randomBlockPos = roundVec3(playerPos)
    randomBlockPos.x = random.randrange(randomBlockPos.x - 50, randomBlockPos.x + 50)
    randomBlockPos.y = random.randrange(randomBlockPos.y - 5, randomBlockPos.y + 5)
    randomBlockPos.z = random.randrange(randomBlockPos.z - 50, randomBlockPos.z + 50)
    print randomBlockPos
  
    #Create hidden diamond block
    mc.setBlock(randomBlockPos.x, randomBlockPos.y, randomBlockPos.z, block.DIAMOND_BLOCK)
    mc.postToChat("A diamond has been hidden - go find!")
  
    #Start hide and seek
    seeking = True
    lastPlayerPos = playerPos
    lastDistanceFromBlock = distanceBetweenPoints(randomBlockPos, lastPlayerPos)
    timeStarted = time.time()
    while (seeking == True):
        #Get players position
        playerPos = mc.player.getPos()
        #Has the player moved
        if lastPlayerPos != playerPos:
            #print "lastDistanceFromBlock = " + str(lastDistanceFromBlock)
            distanceFromBlock = distanceBetweenPoints(randomBlockPos, playerPos)
            #print "distanceFromBlock = " + str(distanceFromBlock)
            if distanceFromBlock < 2:
                #found it!
                seeking = False
            else:
                if distanceFromBlock < lastDistanceFromBlock:
                    mc.postToChat("Warmer " + str(int(distanceFromBlock)) + " blocks away")
                if distanceFromBlock > lastDistanceFromBlock:
                    mc.postToChat("Colder " + str(int(distanceFromBlock)) + " blocks away")
          
            lastDistanceFromBlock = distanceFromBlock
          
        time.sleep(2)
    timeTaken = time.time() - timeStarted
    mc.postToChat("Well done - " + str(int(timeTaken)) + " seconds to find the diamond")

    time.sleep(5)
  
    mc.postToChat("www.stuffaboutcode.com")