def __init__(self, pygame_screen):
self.ticks = 0
self.num_sweepers = NUM_SWEEPERS
self.num_mines = NUM_MINES
self.screen = pygame_screen
self.generations = 0
self.sweepers = [MineSweeper() for i in xrange(self.num_sweepers)]
self.num_weights = self.sweepers[0].get_num_weights()
self.GA = GenAlg(NUM_SWEEPERS,
MUTATION_RATE,
CROSSOVER_RATE,
self.num_weights)
self.population = self.GA.get_population()
for i in xrange(self.num_sweepers):
self.sweepers[i].put_weights(self.population[i].weights)
self.mines = []
for i in xrange(self.num_mines):
self.mines.append(Mine(random() * WINDOW_WIDTH,
random() * WINDOW_HEIGHT))
class Controller(object):
'''
The controller class.
This class would rather be a module with the related functions.
Controller syncs the `MineSweeper`s and the `GenAlg` objects to produce
actual meaningful simulations.
'''
def __init__(self, pygame_screen):
self.ticks = 0
self.num_sweepers = NUM_SWEEPERS
self.num_mines = NUM_MINES
self.screen = pygame_screen
self.generations = 0
self.sweepers = [MineSweeper() for i in xrange(self.num_sweepers)]
self.num_weights = self.sweepers[0].get_num_weights()
self.GA = GenAlg(NUM_SWEEPERS,
MUTATION_RATE,
CROSSOVER_RATE,
self.num_weights)
self.population = self.GA.get_population()
for i in xrange(self.num_sweepers):
self.sweepers[i].put_weights(self.population[i].weights)
self.mines = []
for i in xrange(self.num_mines):
self.mines.append(Mine(random() * WINDOW_WIDTH,
random() * WINDOW_HEIGHT))
def update(self):
'''
Walks through the list of sweepers, checking whether a mine has been
swept. If yes, update the fitness.
'''
if self.ticks < NUM_TICKS:
self.ticks += 1
for i in xrange(self.num_sweepers):
self.sweepers[i].update(self.mines)
grab_hit = self.sweepers[i].check_for_mine(self.mines,
MINE_SCALE)
if grab_hit >= 0:
self.sweepers[i].inc_fitness()
self.mines[grab_hit].position = Vector2D(
random() * WINDOW_WIDTH,
random() * WINDOW_HEIGHT
)
self.population[i].fitness = self.sweepers[i].fitness
else:
self.generations += 1
self.ticks = 0
self.population = self.GA.epoch()
for i in xrange(self.num_sweepers):
self.sweepers[i].put_weights(self.population[i].weights)
self.sweepers[i].reset()
def render(self):
'''
The main rendering method.
'''
f_sweepers = []
i = 0
for sweeper in sorted(self.sweepers,
key=lambda x: x.fitness,
reverse=True):
# Paint the fittest sweepers green.
color = (0,255,0) if i < NUM_ELITE else None
f_sweepers.append(MineSweeperFigure(sweeper, color))
i += 1
f_mines = map(MineFigure, self.mines)
self.screen.fill(BACKGROUND_COLOUR)
map(lambda x: x.draw(self.screen), f_sweepers)
map(lambda x: x.draw(self.screen), f_mines)
pygame.display.flip()
