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flappy_bird.py
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flappy_bird.py
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import pygame
import neat
import time
import os
from bird import Bird
from pipe import Pipe
from base import Base
pygame.font.init()
WIN_WIDTH = 500
WIN_HEIGHT = 800
BG_IMG = pygame.transform.scale2x(pygame.image.load(os.path.join("imgs", "bg.png")))
STAT_FONT = pygame.font.SysFont("arial", 30)
def draw_window(win, birds, pipes, base, score):
win.blit(BG_IMG, (0, 0))
for pipe in pipes:
pipe.draw(win)
base.draw(win)
for bird in birds:
bird.draw(win)
text_score = STAT_FONT.render("Score : {}".format(score), 1, (255, 255, 255))
win.blit(text_score, (WIN_WIDTH - 10 - text_score.get_width(), 10))
text_birds_count = STAT_FONT.render(
"# Birds : {}".format(len(birds)), 1, (255, 255, 255)
)
win.blit(text_birds_count, (10, 10))
pygame.display.update()
def generation_exectuion(genomes, config):
nets = []
ge = []
birds = []
for _, g in genomes:
net = neat.nn.FeedForwardNetwork.create(g, config)
nets.append(net)
birds.append(Bird(230, 350))
g.fitness = 0
ge.append(g)
base = Base(730)
pipes = [Pipe(700)]
score = 0
win = pygame.display.set_mode((WIN_WIDTH, WIN_HEIGHT))
clock = pygame.time.Clock()
run = True
while run:
clock.tick(30)
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
pygame.quit()
quit()
if len(birds) == 0:
run = False
break
pipe_ind = 0
if pipes[0].passed:
pipe_ind = 1
for x, bird in enumerate(birds):
bird.move()
ge[x].fitness += 0.1
output = nets[x].activate(
(
bird.y - pipes[pipe_ind].height,
bird.y - pipes[pipe_ind].bottom,
)
)
if output[0] > 0.5:
bird.jump()
rem = []
add_pipe = False
for pipe in pipes:
for x, bird in enumerate(birds):
if pipe.collide(bird):
ge[x].fitness -= 1
birds.pop(x)
nets.pop(x)
ge.pop(x)
if not pipe.passed and pipe.end < bird.x:
pipe.passed = True
add_pipe = True
if pipe.end < 0:
rem.append(pipe)
pipe.move()
if add_pipe:
score += 1
for g in ge:
g.fitness += 5
pipes.append(Pipe(500))
for r in rem:
pipes.remove(r)
for x, bird in enumerate(birds):
if (bird.y + bird.img.get_height() >= 730) or (bird.y < 0):
birds.pop(x)
nets.pop(x)
ge.pop(x)
base.move()
draw_window(win, birds, pipes, base, score)
def run(config_path):
config = neat.config.Config(
neat.DefaultGenome,
neat.DefaultReproduction,
neat.DefaultSpeciesSet,
neat.DefaultStagnation,
config_path,
)
p = neat.Population(config)
p.add_reporter(neat.StdOutReporter(True))
p.add_reporter(neat.StatisticsReporter())
winner = p.run(generation_exectuion, 50)
if __name__ == "__main__":
local_dir = os.path.dirname(__file__)
config_path = os.path.join(local_dir, "config-feedforward.txt")
run(config_path)