save project

snake.py

@@ -3,7 +3,7 @@ from pygame import locals
 
 # 初始化pygame，为使用硬件做准备
 pygame.init()
-
+FPSCLOCK = pygame.time.Clock()
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
 
@@ -12,27 +12,47 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-
-
-FPSCLOCK = pygame.time.Clock()
+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"
+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()
         if event.type == locals.KEYDOWN:
-            if event.key == locals.K_RIGHT and setheading !="left"
-                
-    x +=30
+            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 = down
+    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)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right,position[-1])
+    screen.blit(snake_head,position[-1])
     # 将贪吃蛇的身体画上去
     #screen.blit(body, (210, 120))
     #screen.blit(body, (180, 120))