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snake.py

@@ -15,21 +15,53 @@ food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 body = pygame.image.load('body.png')
 #蛇头的初始位置x，y
 #蛇头的初始位置x，y
 x,y=240,120
 x,y=240,120
+#创建一个列表position记录贪吃蛇的坐标位置
+position=[(180,90),(180,120),(210,180),(x,y)]
+
+#设置贪吃蛇的初始朝向setheading
+setheading='right'
+#根据朝向设置蛇头朝向snake_heading
+snake_heading=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()
-    #蛇头右移
-    x+=30
+        elif event.type == locals.KEYDOWN:
+            if event.key==locals.K_RIGHT and setheading!='left':
+                setheading='right'
+                snake_heading=right
+            #朝左
+            if event.key==locals.K_LEFT and setheading!='right':
+                setheading='left'
+                snake_heading=left
+            #朝上up
+            #朝下down
+    #根据蛇头的朝向来移动
+    if setheading=='right':
+        x+=30
+    elif ?
+        ?
+    elif ?
+        ?
+    else:
+        ?
+    #将头移动后的坐标位置添加在列表末尾
+    #删除列表第一个元素
+    position.append((x,y))
+    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
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    #screen.blit(right, (x, y))
+    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
-    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])
+    # screen.blit(body, (210, 120))
+    # screen.blit(body, (180, 120))
+    # screen.blit(body, (180, 90))
     # 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