save project

snake.py

@@ -16,13 +16,30 @@ body = pygame.image.load('body.png')
 
 x, y = 240,120
 position = [(180,90),(180,120),(210,120),(x,y)]
-
+setheading="right"
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-    x += 30
+    if event.type == locals.KEYDOWN:
+        if event.key == locals.K_RIGHT and setheading !="left":
+            setheading = 'right'
+        if event.key == locals.K_LEFT and setheading !="right":
+            setheading ='left'
+        if event.key ==locals.K_UP and setheading !="down":
+            setheading = "up"
+        if event.key == locals.K_DOWN and setheading !="up":
+            setheading = 'down'
+    
+    if setheading == "right":
+        x += 30
+    elif setheading == "left":
+        x -= 30
+    elif setheading == "up":
+        y -= 30
+    else:
+        y += 30
     position.append((x,y))
     position.pop(0)
     # 将背景图画上去
@@ -30,7 +47,7 @@ while True:
     # 将贪吃蛇画上去
     screen.blit(right, position[-1])
     # 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])
     # 将果实画上去
     screen.blit(food, (360, 300))