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#!/usr/bin/env python3
#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.
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