[简介]我是OpenAI的初学者，我已经制作了一个自定义游戏，我想在其中实现一个自学习的代理。我遵循本指南在GitHub上设置一个存储库，但是我不明白如何将代码格式化以与Gym-foo/gym_foo/envs/foo_env.py.py
的内容一起使用。[问题]有人有可能有人指导我如何构造我的代码，从而与：
兼容：class FooEnv(gym.Env):
metadata = {'render.modes': ['human']}
def __init__(self):
...
def step(self, action):
...
def reset(self):
...
def render(self, mode='human', close=False):
...
[代码]
import pygame
import time
import random
from pygame.locals import *
pygame.init()
display_width = 1002
display_height = 720
black = (0,0,0)
white = (255,255,255)
red = (220,0,0)
blue = (53,155,255)
green = (0,190,0)
bright_red = (255,0,0)
bright_green = (0,255,0)
dark_blue = (0,102,204)
yellow = (255, 255, 0)
gameDisplay = pygame.display.set_mode((display_width,display_height)) #creates surface/ display
pygame.display.set_caption('Blob Arena') #name of project
clock = pygame.time.Clock() #sets a clock
#________________________________________________________________________________________
blobImage = pygame.image.load('blob2.png')
blobIcon = pygame.image.load('blob_img.png')
bulletpicture = pygame.image.load("bullet.png")
pygame.display.set_icon(blobIcon)
pause = True
blob_width = 51
blob_height = 51
bullet_width = 12
bullet_height = 5
bullets=[]
bullets2=[]
def blob(x,y):
gameDisplay.blit(blobImage,(x,y)) #drawing to background
def bullets_hit(count):
font = pygame.font.SysFont(None, 25)
text = font.render("Score: "+str(count), True, black)
gameDisplay.blit(text,(0,20))
def player_lives(count):
font = pygame.font.SysFont(None, 25)
text = font.render("Lives Left: "+str(count), True, bright_red)
gameDisplay.blit(text,(0,0))
def game_intro():
intro = True
while intro:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
gameDisplay.fill(dark_blue)
largeText = pygame.font.Font('freesansbold.ttf', 110)
TextSurf, TextRect = text_objects("Blob Arena", largeText) # Returns text surface and rectangle
TextRect.center = ((display_width / 2), (display_height / 2.5))
gameDisplay.blit(TextSurf, TextRect)
button("Training 1", 200, 430, 140, 53, green, bright_green, game_loop)
button("Training 2", 431, 430, 140, 53, green, bright_green, game_loop)
button("Training 3", 662, 430, 140, 53, green, bright_green, game_loop)
button("Human vs AI", 315.5, 550, 140, 53, green, bright_green, game_loop)
button("Quit", 546.5, 550, 140, 53, red, bright_red, quit_game)
pygame.display.update()
clock.tick(15)
def button(msg,x,y,w,h,ic,ac,action=None):
mouse = pygame.mouse.get_pos()
click = pygame.mouse.get_pressed() #collects mouse left, right and middle button
if x + w > mouse[0] > x and y + h > mouse[1] > y:
pygame.draw.rect(gameDisplay, ac, (x, y, w, h))
if click[0] == 1 and action!= None:
action()
else:
pygame.draw.rect(gameDisplay, ic, (x, y, w, h))
smallText = pygame.font.Font("freesansbold.ttf", 20)
textSurf, textRect = text_objects(msg, smallText)
textRect.center = ((x + (w / 2)), (y + (h / 2)))
gameDisplay.blit(textSurf, textRect)
def unpause():
global pause
pause = False
def paused():
largeText = pygame.font.Font('freesansbold.ttf', 110)
TextSurf, TextRect = text_objects("Paused", largeText) # Returns text surface and rectangle
TextRect.center = ((display_width / 2), (display_height / 2.5))
gameDisplay.blit(TextSurf, TextRect)
while pause:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
button("Continue", 315.5, 450, 140, 53, green, bright_green, unpause)
button("Quit", 546.5, 450, 140, 53, red, bright_red, quit_game)
pygame.display.update()
clock.tick(15)
def text_objects(text, font):
textSurface = font.render(text, True, black)
return textSurface, textSurface.get_rect()
def quit_game():
pygame.quit()
quit()
def game_over():
largeText = pygame.font.Font('freesansbold.ttf', 110)
TextSurf, TextRect = text_objects("Game Over", largeText) # Returns text surface and rectangle
TextRect.center = ((display_width / 2), (display_height / 2.5))
gameDisplay.blit(TextSurf, TextRect)
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
button("Play Again", 280.5, 450, 140, 53, green, bright_green,game_loop)
button("Quit", 581.5, 450, 140, 53, red, bright_red,quit_game)
pygame.display.update()
clock.tick(15)
def game_loop():
global pause
x = (display_width * 0.08)
y = (display_height * 0.2)
x_change = 0
y_change = 0
blob_speed = 2
velocity = [2, 2]
score = 0
lives = 3
pos_x = display_width/1.2
pos_y = display_height/1.2
previous_time = pygame.time.get_ticks()
previous_time2 = pygame.time.get_ticks()
gameExit = False
while not gameExit:
for event in pygame.event.get():#monitors hardware movement/ clicks
if event.type == pygame.QUIT:
pygame.quit()
quit()
pos_x += velocity[0]
pos_y += velocity[1]
if pos_x + blob_width > display_width or pos_x < 601:
velocity[0] = -velocity[0]
if pos_y + blob_height > display_height or pos_y < 0:
velocity[1] = -velocity[1]
for b in range(len(bullets2)):
bullets2[b][0] -= 6
for bullet in bullets2:
if bullet[0] < 0:
bullets2.remove(bullet)
current_time2 = pygame.time.get_ticks()
#ready to fire when 500 ms have passed.
if current_time2 - previous_time2 > 500:
previous_time2 = current_time2
bullets2.append([pos_x+25, pos_y+24])
# Checks to see if any keys are held down and remembers them with the variable keys.
keys = pygame.key.get_pressed()
for b in range(len(bullets)):
bullets[b][0] += 6
for bullet in bullets:
if bullet[0] > 1005:
bullets.remove(bullet)
if keys[pygame.K_SPACE]:
current_time = pygame.time.get_ticks()
#ready to fire when 500 ms have passed.
if current_time - previous_time > 500:
previous_time = current_time
bullets.append([x+25, y+24])
# If the player is holding down one key or the other the blob moves in that direction
if x < 0:
x = 0
if keys[pygame.K_a]:
x_change = -blob_speed
if x > 401 - blob_width:
x = 401 - blob_width
if keys[pygame.K_d]:
x_change = blob_speed
if keys[pygame.K_p]:
pause = True
paused()
# If the player is holding down both or neither of the keys the blob stops
if keys[pygame.K_a] and keys[pygame.K_d]:
x_change = 0
if not keys[pygame.K_a] and not keys[pygame.K_d]:
x_change = 0
if y < 0:
y = 0
if keys[pygame.K_w]:
y_change = -blob_speed
if y > display_height - blob_height:
y = display_height - blob_height
if keys[pygame.K_s]:
y_change = blob_speed
if keys[pygame.K_w] and keys[pygame.K_s]:
y_change = 0
if not keys[pygame.K_w] and not keys[pygame.K_s]:
y_change = 0
#print(event)
# Reset x and y to new position
x += x_change
y += y_change
gameDisplay.fill(blue) #changes background surface
bullets_hit(score)
player_lives(lives)
pygame.draw.line(gameDisplay, black, (601, display_height), (601, 0), 3)
pygame.draw.line(gameDisplay, black, (401, display_height), (401, 0), 3)
blob(pos_x, pos_y)
blob(x, y)
for bullet in bullets:
gameDisplay.blit(bulletpicture, pygame.Rect(bullet[0], bullet[1], 0, 0))
if bullet[0] > pos_x and bullet[0] < pos_x + blob_width:
if bullet[1] > pos_y and bullet[1] < pos_y + blob_height or bullet[1] + bullet_height > pos_y and bullet[1] + bullet_height < pos_y + blob_height:
bullets.remove(bullet)
score+=1
for bullet in bullets2:
gameDisplay.blit(bulletpicture, pygame.Rect(bullet[0], bullet[1], 0, 0))
if bullet[0] + bullet_width < x + blob_width and bullet[0] > x:
if bullet[1] > y and bullet[1] < y + blob_height or bullet[1] + bullet_height > y and bullet[1] + bullet_height < y + blob_height:
bullets2.remove(bullet)
lives-=1
if lives == 0:
game_over()
pygame.display.update() #update screen
clock.tick(120)#moves frame on (fps in parameters)
game_intro()
game_loop()
pygame.quit()
quit()
[附加信息]我将使用https://github.com/hvass-labs/tensorflow-tutorials/blob/master/reinforcement_learning.py来使用增强型学习算法。需要一个健身房环境才能使Gym.Make((工作。任何帮助将不胜感激，如果需要更多的话，请告诉我。
我没有pygame库的经验，也不了解其内部工作，这可能会影响到需要运行的代码的某些影响那。但是，只要从一定的直观理解开始，这是一件好事。
-
__init__()应运行任何一次性设置。我可以想象类似pygame.init()之类的东西可能必须进入这里，但这我不确定，因为我不熟悉pygame。 -
step()应每当代理选择一个操作，然后运行游戏的单个"框架"，然后将其向前移动给定给定给代理选择的操作。或者，如果您有一个游戏，单个操作采用多个帧，则应在此处运行多个帧。本质上：保持游戏向前前进，直到您达到代理应该再次选择新动作的地步，然后返回当前的游戏状态。 -
reset()应该...好吧，重置游戏。因此，请恢复回到(或随机，无论您想要的(初始游戏状态，运行可能需要的任何清理。例如，我也可以想象这里属于这里的pygame.init()。这取决于该功能的确切功能。如果仅需要运行一次，则属于__init__()。如果需要在每个新游戏/"情节"的开始时运行，则IR属于reset()。 -
render()可能应包含大多数与图形相关的代码。您可以尝试从例如健身房中的Cartpole环境中汲取灵感，该环境在这里还绘制了一些相当简单的图形。看起来应该精确地画一个框架。
现在，查看您从开始的代码，似乎有大量的用户界面代码...与按钮相关的各种代码，暂停/unpaise，fancy(andioned？(intro开始游戏。我不知道您是否有能力摆脱所有这些？如果您纯粹是在进行强化学习，那么您可能可以。如果您仍然需要用户互动，则可能无法进行，然后事情变得更加困难，因为所有这些内容都不适合gym框架。
我可以尝试对代码的其余部分以及应该去的地方进行一些有根据的猜测，但是您应该根据上述更一般的准则仔细检查所有内容：
def reset(self):
# all the following code seems to define the initial game state
x = (display_width * 0.08)
y = (display_height * 0.2)
x_change = 0
y_change = 0
blob_speed = 2
velocity = [2, 2]
score = 0
lives = 3
pos_x = display_width/1.2
pos_y = display_height/1.2
bullets=[]
bullets2=[]
step()可能应包含game_loop()中while循环中的大多数代码。不过，应修改键输入检查代码，而应该开始利用传递到step()的action。最后，step()有望返回包含元组的：
- 下一个游戏状态，代理商可以用来确定下一个动作是什么。如果您愿意，这可能是原始像素，或者可以更容易学习的东西(例如，一堆功能告诉您事物在哪里(。
- 奖励，有些迹象表明您的行动有多好。
-
True如果游戏结束了，False否则。 - 一些词典带有您喜欢的任何额外信息，用于调试目的。可以简单地是一个空的dict
{}。