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-rw-r--r--ant.py77
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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()