save project

snake.py

@@ -12,20 +12,45 @@ 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')
+left = pygame.image.load('left.png')
+down = pygame.image.load('down.png')
+up = pygame.image.load('up.png')
 x,y=240,120
 x,y=240,120
 pos=[(180, 90),(180, 120),(210, 120),(x,y)]
 pos=[(180, 90),(180, 120),(210, 120),(x,y)]
+seth="right"
+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 seth != "left":
+                seth = "right"
+                head = right
+            if event.key == locals.K_LEFT and seth != "right":
+                seth = "left"
+                head = left
+            if event.key == locals.K_UP and seth != "down":
+                seth = "up"
+                head = up
+            if event.key == locals.K_DOWN and seth != "up":
+                seth = "down"
+                head = down
+    if seth == "right":
         x+=30
         x+=30
+    if seth == "left":
+        x-=30
+    if seth == "up":
+        y-=30
+    if seth == "down":
+        y+=30
     pos.pop(0)
     pos.pop(0)
     pos.append((x,y))
     pos.append((x,y))
     # 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(head, (x, y))
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
     for i in range(len(pos)-1):
     for i in range(len(pos)-1):
         screen.blit(body,pos[i])
         screen.blit(body,pos[i])