save project

snake.py

@@ -12,25 +12,54 @@ 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')
-x = 0 
-y = 0
+left  = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down =pygame.image.load('down.png')
+x,y = 240,120
+position =[(180, 90),(180, 120),(210, 120),(x,y)]
+
+setheading = "right"
+snake_head = right
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
         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()
+        if event.type == locals.KEYDOWN:
+            if event.key ==locals.K_RIGHT and setheading!='left':
+                setheading = 'right'
+                snake_head = right
+            if event.key ==locals.K_LEFT and setheading!='right':
+                setheading = 'left'
+                snake_head = left
+            if event.key ==locals.K_UP and setheading!='down':
+                setheading = 'up'
+                snake_head = up
+            if event.key ==locals.K_DOWN and setheading!='up':
+                setheading = 'down'
+                snake_head = down
     # 将背景图画上去
     # 将背景图画上去
-    x+=30
+    if setheading == 'right':
+        x+=30
+    elif setheading == 'left' :
+        x-=30
+    elif setheading == 'up' :
+        y-=30
+    elif setheading == 'down' :
+        y+=30
+    position.append((x,y))
+    position.pop(0)
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(snake_head,position[-1])
 
 
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
-    screen.blit(body, (210, 120))
-    screen.blit(body, (180, 120))
-    screen.blit(body, (180, 90))
+    for i in range(len(position)-1):
+        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
     pygame.display.update()
     pygame.display.update()
-    FPSCLOCK.tick(3)
+    FPSCLOCK.tick(3)
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+    
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