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#!/usr/bin/python
#
# 10th October 2013
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import pygame
from pygame.locals import *
# init pygame
pygame.init()
# the main game
def game_loop():
# set properties
displaysize = (90, 90)
display = pygame.display.set_mode(displaysize)
# get a pixel array
pxarr = pygame.PixelArray(display)
display.fill((255, 255, 255))
# init the ant
antdir = 0
antx = displaysize[0] // 2
anty = displaysize[1] // 2
loop = True
# start the main loop
while loop:
# check window events
for event in pygame.event.get():
if event.type == QUIT:
loop = False
# check if the ant is inside the window
if antx > 0 and anty > 0 and antx < displaysize[0] and anty < displaysize[1]:
# operate
if pxarr[antx][anty] == 0:
# if white, set black and turn right
pxarr[antx][anty] = (255, 255, 255)
antdir += 1
if antdir == 4:
antdir = 0
else:
# if black, set the pixel white and turn left
pxarr[antx][anty] = (0, 0, 0)
antdir -= 1
if antdir == -1:
antdir = 3
# move the ant in its direction
if antdir % 2 == 0:
antx += antdir - 1
else:
anty += antdir - 2
# update the display
pygame.display.update()
if __name__ == '__main__':
game_loop()
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