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snake.py

@@ -6,64 +6,59 @@ pygame.init()
 
 
 # 创建一个窗口
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
 screen = pygame.display.set_mode((660, 480))
-FPSCLOCK = pygame.time.Clock()
+
+FPSCLOCK = pygame.time.Clock()  # pygame时钟，控制游戏速度（帧数）
 # 背景
 # 背景
 background = pygame.image.load('bg.png')
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 body = pygame.image.load('body.png')
 left = pygame.image.load('left.png')
 left = pygame.image.load('left.png')
+right = pygame.image.load('right.png')
 up = pygame.image.load('up.png')
 up = pygame.image.load('up.png')
 down = pygame.image.load('down.png')
 down = pygame.image.load('down.png')
+x, y = 240, 120
+position = [(180, 90), (180, 120), (210, 120), (x, y)]
 
 
-x,y = 240,120
-position = [(180,90),(180,120),(210,120),(x,y)]
 setheading = "right"
 setheading = "right"
-snake_head = right
-
+setheading = right
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
-        #print(event)
         if event.type == locals.QUIT:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             # 接收到退出事件后退出程序
             exit()
             exit()
-        elif event.type == locals.KEYDOWN:
+        if event.type == locals.KEYDOWN:
             if event.key == locals.K_RIGHT and setheading != "left":
             if event.key == locals.K_RIGHT and setheading != "left":
-                setheading = "right"
+                setheading = 'right'
                 snake_head = right
                 snake_head = right
             if event.key == locals.K_LEFT and setheading != "right":
             if event.key == locals.K_LEFT and setheading != "right":
-                setheading = "left"
+                setheading = 'left'
                 snake_head = left
                 snake_head = left
             if event.key == locals.K_UP and setheading != "down":
             if event.key == locals.K_UP and setheading != "down":
-                setheading = "up"
+                setheading = 'up'
                 snake_head = up
                 snake_head = up
             if event.key == locals.K_DOWN and setheading != "up":
             if event.key == locals.K_DOWN and setheading != "up":
-                setheading = "down"
+                setheading = 'down'
                 snake_head = down
                 snake_head = down
-
     if setheading == "right":
     if setheading == "right":
-        x+=30
-    elif setheading == "left":
-        x-=30
-    elif setheading == "up":
-        y-=30
-    else:
-        y+=30
-    #x +=30
-    #y +=30       
-    position.append((x,y))
+        x +=30
+    if setheading == "left":
+        x -=30
+    if setheading == "up":
+        y +=30
+    if setheading == "down":
+        y -=30
+    #x += 30   #
+    position.append((x, y))
     position.pop(0)
     position.pop(0)
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
-    # 将贪吃蛇画上去
-    screen.blit(right, (x,y))
-    #screen.blit(right, (position)-1)
+    # 将贪吃蛇的头画上去
+    screen.blit(right, position[-1])  #
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
     for i in range(len(position)-1):
-        screen.blit(body,position[i])
-    #screen.blit(body, (210, 120))
-    #screen.blit(body, (180, 120))
-    #screen.blit(body, (180, 90))
+        screen.blit(body, position[i])
+
     # 将果实画上去
     # 将果实画上去
     screen.blit(food, (360, 300))
     screen.blit(food, (360, 300))
     # 刷新画面
     # 刷新画面