class SnakeEnv(Env):
def __init__(self):
self.action_space = Discrete(3) # 0 = turn left, 1 = do nothing, 2 = turn right
self.state = [0, 0, 1, 0]
self.game = Game()
self.reward = 0
self.done = False
def step(self, action):
offset = (action - 1)
translated_action = offset + self.game.snake.direction
if translated_action < 0:
translated_action = 3
if translated_action > 3:
translated_action = 0
self.reward, self.done = self.game.run(1, translated_action)
diff = (self.game.food.position[0] - self.game.snake.snake[0][0], self.game.food.position[1] - self.game.snake.snake[0][1])
self.state[0] = int(diff[0] < 0)
self.state[2] = int(diff[0] > 1)
self.state[1] = int(diff[1] < 0)
self.state[3] = int(diff[1] > 0)
return self.state, self.reward, self.done, {}
def render(self):
self.game.render()
def reset(self):
self.game.reset()
# average fitness of a population
lstr(sum(n.fitness for n in networks) / len(networks)),
])
if generation >= max_generation:
break
# select for the next generation
networks = select_networks(networks)
# crossover for the next generation
networks = crossover_networks(networks)
# save data for the performance graph
with open("snake_data.csv", 'w') as file:
writer = csv.writer(file, delimiter=';') # delimit with semicolons
writer.writerows(snake_data)
# restore the best network
best_net = Network(net_args)
best_net.fitness = best_net_data[0]
best_net.import_data(best_net_data[1])
# run it
print(f"\nRunning best network: {best_net.fitness} fitness")
# attach the controller
game.external = partial(controller, best_net)
game.fps = 6
while not game.window.has_exit:
# reset the game
game.reset()
# run the game
game.run()
print(f"Score: {game.score}")
sleep(1)
from snake import Game
# This is a sample Python script.
# Press Shift+F10 to execute it or replace it with your code.
# Press Double Shift to search everywhere for classes, files, tool windows, actions, and settings.
# Press the green button in the gutter to run the script.
if __name__ == '__main__':
snake = Game()
snake.run()
# See PyCharm help at https://www.jetbrains.com/help/pycharm/
from snake import Game
if __name__ == "__main__":
a = Game('snake', 1280, 640, 10)
a.run()
