save project

snake.py

@@ -11,22 +11,45 @@ position=[(180, 90),(180, 120),(210, 120),(x,y)]
 # 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')
-
+setheading='right'
+snakeheading=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()
     # 将背景图画上去
-
+        if event.type == locals.KEYDOWN :
+            if event.key == locals.K_DOWN and snakeheading != 'up' :
+                snakeheading=down
+                setheading='down'
+            if event.key == locals.K_UP and setheading != 'down' :
+                snakeheading=up
+                setheading='up'
+            if event.key == locals.K_RIGHT and setheading != 'left' :
+                snakeheading=right
+                setheading='right'
+            if event.key == locals.K_LEFT and setheading != 'right' :
+                snakeheading=left
+                setheading='left'
     position.pop(0)
+    if setheading == 'left' :
+        x-=30
+    elif setheading == 'right' :
         x+=30
+    elif setheading == 'up' :
+        y-=30
+    elif setheading == 'down' :
+        y+=30
     position.append((x,y))
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(snakeheading, (x, y))
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body, position[i])
@@ -37,4 +60,4 @@ while True:
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(5)
\ No newline at end of file