Flappy Bird环境中离散动作空间设置代码
时间: 2024-05-13 13:18:12 浏览: 12
在Flappy Bird环境中,动作空间是离散的,只有两个动作:向上跳和不跳。下面是一个示例代码,展示如何设置离散动作空间:
```python
import gym
from gym import spaces
class FlappyBirdEnv(gym.Env):
def __init__(self):
self.action_space = spaces.Discrete(2) # 离散动作空间,只有两个动作:向上跳和不跳
...
```
这段代码创建了一个名为`action_space`的离散空间,其中有两个动作:0表示不跳,1表示向上跳。在使用时,你可以将`action`参数设为0或1来表示相应的动作。
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Flappy Bird环境代码
以下是使用Python和Pygame库编写的Flappy Bird环境代码:
```python
import pygame
import random
WIDTH = 288
HEIGHT = 512
FPS = 60
pygame.init()
pygame.mixer.init()
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Flappy Bird")
clock = pygame.time.Clock()
font_name = pygame.font.match_font('arial')
def draw_text(surf, text, size, x, y):
font = pygame.font.Font(font_name, size)
text_surface = font.render(text, True, (255, 255, 255))
text_rect = text_surface.get_rect()
text_rect.midtop = (x, y)
surf.blit(text_surface, text_rect)
def draw_base(base_x):
screen.blit(base_img, (base_x, 450))
screen.blit(base_img, (base_x + WIDTH, 450))
def draw_pipes(pipes):
for pipe in pipes:
if pipe.bottom >= 400:
screen.blit(pipe_img, (pipe.x, pipe.bottom))
else:
flip_pipe = pygame.transform.flip(pipe_img, False, True)
screen.blit(flip_pipe, (pipe.x, pipe.top))
def check_collision(player, pipes):
for pipe in pipes:
if pipe.top <= player.y <= pipe.bottom:
if pipe.x - 10 <= player.x <= pipe.x + 52:
return True
if player.y > 450 or player.y < 0:
return True
return False
class Player(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.image.load('assets/images/bird.png').convert_alpha()
self.rect = self.image.get_rect()
self.rect.centerx = 50
self.rect.centery = HEIGHT/2
self.y_speed = 0
def update(self):
self.y_speed += 1
self.rect.centery += self.y_speed
class Pipe:
def __init__(self):
self.top = random.randint(100, 300)
self.bottom = self.top + 150
self.x = WIDTH
def update(self):
self.x -= 2
def game():
player = Player()
pipes = []
score = 0
base_x = 0
pipe_timer = pygame.time.get_ticks()
running = True
while running:
clock.tick(FPS)
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_SPACE:
player.y_speed = -10
if pygame.time.get_ticks() - pipe_timer > 2000:
pipes.append(Pipe())
pipe_timer = pygame.time.get_ticks()
for pipe in pipes:
pipe.update()
if pipes and pipes[0].x < -50:
pipes.pop(0)
base_x -= 2
if base_x < -WIDTH:
base_x = 0
if check_collision(player, pipes):
running = False
for pipe in pipes:
if pipe.x == player.rect.centerx:
score += 1
screen.blit(background_img, (0, 0))
draw_pipes(pipes)
draw_base(base_x)
draw_text(screen, str(score), 32, WIDTH/2, 30)
player.update()
screen.blit(player.image, player.rect)
pygame.display.update()
pygame.quit()
background_img = pygame.image.load('assets/images/background.png').convert()
base_img = pygame.image.load('assets/images/base.png').convert()
pipe_img = pygame.image.load('assets/images/pipe.png').convert()
game()
```
这个代码实现了一个基本的Flappy Bird游戏环境,包括游戏逻辑、碰撞检测、得分计算等功能。你可以使用该环境来训练和测试自己编写的Flappy Bird AI算法。
ppo强化学习flappy bird训练代码
下面是使用PPO算法来训练Flappy Bird游戏的Python代码:
```python
import gym
from stable_baselines import PPO2
from stable_baselines.common.policies import CnnPolicy
# 创建Flappy Bird游戏环境
env = gym.make('FlappyBird-v0')
# 创建一个卷积神经网络策略
policy = CnnPolicy
# 用PPO算法训练模型
model = PPO2(policy=policy, env=env, verbose=1)
model.learn(total_timesteps=100000)
# 保存模型
model.save("flappy_bird_model")
```
这段代码使用了Stable Baselines库,它是一个用于强化学习的Python库,可以让我们非常方便地使用PPO算法来训练模型。在这里,我们使用了Flappy Bird的游戏环境,使用了卷积神经网络策略,并训练了100000个时间步长。最后,我们将训练好的模型保存在了名为"flappy_bird_model"的文件中。