save project

snake.py

@@ -10,8 +10,13 @@ screen = pygame.display.set_mode((660, 480))
 # 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+sh="right"
+head=right
 x=240
 y=120
 l1=[(x,y),(x,y),(x,y),(x,y)]
@@ -21,11 +26,32 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
+        if event.type==locals.KEYDOWN:
+            if event.key==locals.K_UP and sh !="down":
+                sh="up"
+                head=up
+            elif event.key==locals.K_DOWN and sh !="up":
+                sh="down"
+                head=down
+            elif event.key==locals.K_LEFT and sh !="right":
+                sh="left"
+                head=left
+            elif event.key==locals.K_RIGHT and sh !="left":
+                sh="right"
+                head=right
+
+    if sh=="right":
+        x+=30
+    elif sh=="left":
+        x-=30
+    elif sh=="up":
+        y-=30
+    elif sh=="down":
+        y+=30
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    x+=30
-    screen.blit(right, (x, y))
+    screen.blit(head, (x, y))
     l1.append((x,y))
     l1.pop(0)
     # 将贪吃蛇的身体画上去
@@ -39,4 +65,4 @@ while True:
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()
-    z.tick(2)
\ No newline at end of file
+    z.tick(5)
\ No newline at end of file