#!/usr/bin/env python #www.stuffaboutcode.com #Raspberry Pi, Minecraft Analogue Clock # mcpipy.com retrieved from URL below, written by stuffaboutcode # http://www.stuffaboutcode.com/2013/02/raspberry-pi-minecraft-analogue-clock.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 datetime, to get the time! import datetime #import math so we can use cos and sin import math import server #mid point circle algorithm def drawCircle(mc, x0, y0, z, radius, blockType): f = 1 - radius ddf_x = 1 ddf_y = -2 * radius x = 0 y = radius mc.setBlock(x0, y0 + radius, z, blockType) mc.setBlock(x0, y0 - radius, z, blockType) mc.setBlock(x0 + radius, y0, z, blockType) mc.setBlock(x0 - radius, y0, z, blockType) while x < y: if f >= 0: y -= 1 ddf_y += 2 f += ddf_y x += 1 ddf_x += 2 f += ddf_x mc.setBlock(x0 + x, y0 + y, z, blockType) mc.setBlock(x0 - x, y0 + y, z, blockType) mc.setBlock(x0 + x, y0 - y, z, blockType) mc.setBlock(x0 - x, y0 - y, z, blockType) mc.setBlock(x0 + y, y0 + x, z, blockType) mc.setBlock(x0 - y, y0 + x, z, blockType) mc.setBlock(x0 + y, y0 - x, z, blockType) mc.setBlock(x0 - y, y0 - x, z, blockType) #Brensenham line algorithm def drawLine(mc, x, y, z, x2, y2, blockType): steep = 0 coords = [] dx = abs(x2 - x) if (x2 - x) > 0: sx = 1 else: sx = -1 dy = abs(y2 - y) if (y2 - y) > 0: sy = 1 else: sy = -1 if dy > dx: steep = 1 x,y = y,x dx,dy = dy,dx sx,sy = sy,sx d = (2 * dy) - dx for i in range(0,dx): if steep: mc.setBlock(y, x, z, blockType) else: mc.setBlock(x, y, z, blockType) while d >= 0: y = y + sy d = d - (2 * dx) x = x + sx d = d + (2 * dy) mc.setBlock(x2, y2, z, blockType) #find point on circle def findPointOnCircle(cx, cy, radius, angle): x = cx + math.sin(math.radians(angle)) * radius y = cy + math.cos(math.radians(angle)) * radius return((int(x + 0.5),int(y + 0.5))) def getAngleForHand(positionOnClock): angle = 360 * (positionOnClock / 60.0) return angle def drawHourHand(mc, clockCentre, hours, minutes, blockType): if (hours > 11): hours = hours - 12 angle = getAngleForHand(int((hours * 5) + (minutes * (5.0/60.0)))) hourHandEnd = findPointOnCircle(clockCentre.x, clockCentre.y, 10.0, angle) drawLine(mc, clockCentre.x, clockCentre.y, clockCentre.z - 1, hourHandEnd[0], hourHandEnd[1], blockType) def drawMinuteHand(mc, clockCentre, minutes, blockType): angle = getAngleForHand(minutes) minuteHandEnd = findPointOnCircle(clockCentre.x, clockCentre.y, 18.0, angle) drawLine(mc, clockCentre.x, clockCentre.y, clockCentre.z, minuteHandEnd[0], minuteHandEnd[1], blockType) def drawSecondHand(mc, clockCentre, seconds, blockType): angle = getAngleForHand(seconds) secondHandEnd = findPointOnCircle(clockCentre.x, clockCentre.y, 20.0, angle) drawLine(mc, clockCentre.x, clockCentre.y, clockCentre.z + 1, secondHandEnd[0], secondHandEnd[1], blockType) #function to draw the clock def drawClock(mc, clockCentre, radius, time): blockType = block.DIAMOND_BLOCK #draw the circle drawCircle(mc, clockCentre.x, clockCentre.y, clockCentre.z, radius, blockType) #draw hour hand drawHourHand(mc, clockCentre, time.hour, time.minute, block.DIRT) #draw minute hand drawMinuteHand(mc, clockCentre, time.minute, block.STONE) #draw second hand drawSecondHand(mc, clockCentre, time.second, block.WOOD_PLANKS) #function to update the time on the clock def updateTime(mc, clockCentre, lastTime, time): #draw hour and minute hand if (lastTime.minute != time.minute): #clear hour hand drawHourHand(mc, clockCentre, lastTime.hour, lastTime.minute, block.AIR) #new hour hand drawHourHand(mc, clockCentre, time.hour, time.minute, block.DIRT) #clear hand drawMinuteHand(mc, clockCentre, lastTime.minute, block.AIR) #new hand drawMinuteHand(mc, clockCentre, time.minute, block.STONE) #draw second hand if (lastTime.second != time.second): #clear hand drawSecondHand(mc, clockCentre, lastTime.second, block.AIR) #new hand drawSecondHand(mc, clockCentre, time.second, block.WOOD_PLANKS) if __name__ == "__main__": clockCentre = minecraft.Vec3(0, 30, 0) radius = 20 time.sleep(5) #Connect to minecraft by creating the minecraft object # - minecraft needs to be running and in a game mc = minecraft.Minecraft.create(server.address) #Post a message to the minecraft chat window mc.postToChat("Hi, Minecraft Analogue Clock, www.stuffaboutcode.com") time.sleep(2) lastTime = datetime.datetime.now() #draw the clock drawClock(mc, clockCentre, radius, lastTime) #loop until Ctrl C is pressed try: while True: nowTime = datetime.datetime.now() #update the time on the clock updateTime(mc, clockCentre, lastTime, nowTime) lastTime = nowTime time.sleep(0.5) except KeyboardInterrupt: print "stopped" #Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: # #The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. # #THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.