# # Code under the MIT license by Alexander Pruss # from mcturtle import * import lsystem t = Turtle() t.pendelay(0) t.turtle(None) t.penblock(BRICK_BLOCK) # ensure angles are always integral multiples of 90 degrees t.gridalign() rules = {'X':'X+YF+', 'Y':'-FX-Y'} def go(): # draw a wall segment with a door t.pendown() t.penblock(BRICK_BLOCK) t.startface() for i in range(4): t.go(4) t.pitch(90) t.endface() t.penup() t.go(2) t.pendown() t.penblock(AIR) t.pitch(90) t.go(1) t.penup() t.pitch(180) t.go(1) t.pitch(90) t.go(2) dictionary = { '+': lambda: t.yaw(90), '-': lambda: t.yaw(-90), 'F': lambda: go() } lsystem.lsystem('FX', rules, dictionary, 14)