save project

snake.py

@@ -12,30 +12,48 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-right = pygame.image.load('right.png')
-right = pygame.image.load('right.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')
 x = 240
 x , y = 240, 120 
 wz = [(x - 90, y),(x - 60, y),(x-30, y),(x, y)]#初始位置
 fx = "s"
-
-
+st = 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_LEFT and fx!= "y":
+                fx = "z"
+                st = left
+            if event.key == locals.K_RIGHT and fx!= "z":
+                fx = "y"
+                st = right
+            if event.key == locals.K_UP and fx!= "x":
+                fx = "s"
+                st = up
+            if event.key == locals.K_DOWN and fx!= "s":
+                fx = "x"
+                st = down
+    if fx=="s":
+        y = y - 30
+    elif fx=="x":
+        y = y + 30
+    elif fx=="z":
+        x = x - 30
+    else:
+        x = x + 30        
     # 将背景图画上去
-    x = x + 30
     wz.append((x,y))
     wz.pop(0)
 
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(st, (x, y))
     # 将贪吃蛇的身体画上去
     for i in range(len(wz) - 1):
         screen.blit(body,wz[i])