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Pong.py
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import pygame
import cv2
import random
class MyBallClass(pygame.sprite.Sprite):
def __init__(self,image_file,speed=[10,5],location=[0,0]):#定义Ball类
pygame.sprite.Sprite.__init__(self)
self.image=pygame.image.load(image_file)
self.rect=self.image.get_rect()
self.rect.left,self.rect.top=location
self.speed=speed
def move(self):#定义move()方法
global score,score_surf,score_font
self.rect=self.rect.move(self.speed)
if self.rect.left<0 or self.rect.right>screen.get_width():
self.speed[0]=-self.speed[0]
if self.rect.top<=0: #球碰到屏幕顶部
self.speed[1]=-self.speed[1]
class MyPaddleClass(pygame.sprite.Sprite):#定义球拍类
def __init__(self,location=[0,0]):
pygame.sprite.Sprite.__init__(self)
image_surface=pygame.surface.Surface([100,10])
image_surface.fill([0,0,0])
self.image=image_surface.convert()
self.rect=self.image.get_rect()
self.rect.left,self.rect.top=location
pygame.init()
screen = pygame.display.set_mode([640,480])
clock = pygame.time.Clock()
Ball_vertical_speed = 4
Ball_horizontal_speed = 8
myBall = MyBallClass(r"ball.bmp",[Ball_horizontal_speed,Ball_vertical_speed],[50,50]) #球的速度和出现位置
ballGroup = pygame.sprite.Group(myBall)
paddle = MyPaddleClass([320,470])
lives = 3
score = 0
score_one_round = 0
offset = 10 #板子速度
score_font = pygame.font.Font(None,50) #创建font对象 50
score_surf = score_font.render(str(score),1,(0,0,0))
score_pos = [10,10]
def game_init():
global lives,score,score_surf
screen.fill([255,255,255])
screen.blit(myBall.image,myBall.rect)
screen.blit(paddle.image,paddle.rect)
screen.blit(score_surf,score_pos)
for i in range(lives):#画出右上角显示为三条命的球
width=screen.get_width()
screen.blit(myBall.image,[width-40*i,20])
pygame.display.flip()
pygame.image.save(screen,"game.jpg") #有改进空间
state = cv2.imread("game.jpg",0)
return state
def game_step(action):
global lives,score,score_surf,score_one_round
done_show = False
reward = 0
clock.tick(60)
screen.fill([255,255,255])
for event in pygame.event.get():
if event.type == pygame.QUIT:
return -1,-2
#keys_pressed = pygame.key.get_pressed() #change this to trans the mode between random(machine control) and keyboard control
#if keys_pressed[pygame.K_d] and paddle.rect.centerx < 590: #change this to trans the mode between random(machine control) and keyboard control
if action == 0 and paddle.rect.centerx < 590: #change this to trans the mode between keyboard control and random(machine control)
paddle.rect.centerx += offset
#if keys_pressed[pygame.K_a] and paddle.rect.centerx > 50: #change this to trans the mode between random(machine control) and keyboard
elif action == 2 and paddle.rect.centerx > 50: #change this to trans the mode between keyboard control and random(machine control)
paddle.rect.centerx -= offset
if pygame.sprite.spritecollide(paddle,ballGroup,False):#检测球与球拍的碰撞
score= score + 1
score_one_round = score_one_round + 1
score_surf = score_font.render(str(score),1,(0,0,0))
if screen.get_rect().bottom - myBall.rect.bottom >= 2:
myBall.speed[1] =- myBall.speed[1]
reward = 5
if abs(myBall.rect.centerx - paddle.rect.centerx) <= 12:
reward = 10
elif abs(myBall.rect.centerx - paddle.rect.centerx) <= 30:
reward = 8
else:
myBall.speed[0]=-myBall.speed[0]
print("bad")
reward = 1
myBall.move()
screen.blit(myBall.image,myBall.rect)
screen.blit(paddle.image,paddle.rect)
screen.blit(score_surf,score_pos)
for i in range(lives):#画出右上角显示为三条命的球
width = screen.get_width()
screen.blit(myBall.image,[width-40*i,20])
pygame.display.flip()
if myBall.rect.bottom >= screen.get_rect().bottom:#如果球碰到底边就减一条命,是否需要重置球拍位置？
score_one_round = 0
lives = lives-1
reward = -5
if abs(myBall.rect.centerx - paddle.rect.centerx) <= 100:
reward = 0
elif abs(myBall.rect.centerx - paddle.rect.centerx) <= 200:
reward = -3
if lives == 0:#创和绘制最终的分数文本
f = open("scores.txt","a")
f.write("%d \n" % score)
reward += -5
lives = 3
score = 0
score_surf = score_font.render(str(score),1,(0,0,0))
final_text2 = "Game Over"
ft2_font = pygame.font.Font(None,70)
ft2_surf = ft2_font.render(final_text2,1,(0,0,0))
screen.blit(ft2_surf,[screen.get_width()/2-ft2_surf.get_width()/2,100])
pygame.display.flip()
#pygame.time.delay(1000)
final_text3 = "Restart"
ft3_font = pygame.font.Font(None,70)
ft3_surf = ft3_font.render(final_text3,1,(0,0,0))
screen.blit(ft3_surf,[screen.get_width()/2-ft3_surf.get_width()/2,200])
pygame.display.flip()
#pygame.time.delay(1000)
myBall.rect.topleft=[50,50]
myBall.speed = [Ball_horizontal_speed,Ball_vertical_speed] #Ball speed
paddle.rect.left,paddle.rect.top=[320,470]
done_show = True
else:
final_text4 = "left %s lives"%lives
ft4_font = pygame.font.Font(None,70)
ft4_surf = ft4_font.render(final_text4,1,(0,0,0))
screen.blit(ft4_surf,[screen.get_width()/2-ft4_surf.get_width()/2,100])
pygame.display.flip()
#pygame.time.delay(2000)
myBall.rect.topleft = [50,50]
myBall.speed = [Ball_horizontal_speed,Ball_vertical_speed] #Ball speed
paddle.rect.left,paddle.rect.top = [320,470]
reward_1 = (50 - abs(myBall.rect.centerx - paddle.rect.centerx))/50
if reward_1 < -0.00005:
reward_1 = -0.00005
reward_all = reward/10.0 *0.7 + reward_1*0.3
pygame.image.save(screen,"game.jpg")
state = cv2.imread("game.jpg",0)
return state, reward_all, score_one_round,score ,done_show
def game_stop():
pygame.quit()
# use following code to run game without AI
# game_init()
# for i in range(0,10000):
# action = random.choice([0, 1, 2])
# a,b,c,d,e = game_step(action)
# if b == -2:
# game_stop()
# break