save project

snake.py

@@ -12,14 +12,41 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+left = pygame.image.load("left.png")
+up = pygame.image.load("up.png")
+down = pygame.image.load("down.png")
 x ,y = 240, 120
 position = [(180,90),(180,120),(210,120),(x,y)]
+setheading = "right"
+snake_head = 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()
+        elif event.type ==locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading != "left":
+                setheading ="right"
+                snake_head = right
+            if event.key == locals.K_LEFT and setheading != "right":
+                setheading ="left"
+                snake_head = left
+            if event.key == locals.K_UP and setheading != "down":
+                setheading ="up"
+                snake_head = up
+            
+            if event.key == locals.K_DOWN and setheading != "up":
+                setheading ="down"
+                snake_head = dowm
+    if setheading == "right":
+        x+=30
+    elif setheading == "left":
+         x-=30
+    elif setheading == "up":
+        y-=30
+    else:
+        y+=30
     x+=30
     position.append((x,y))
     position.pop(0)