save project

snake.py

@@ -2,8 +2,7 @@ import pygame
 from pygame import locals
 
 # 初始化pygame，为使用硬件做准备
-x,y = 240,120
-position=[(180,90),(180,120),(210,120),(x,y)]
+
 pygame.init()
 FPSCLOCK = pygame.time.Clock()
 
@@ -15,8 +14,14 @@ 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')
+down = pygame.image.load('down.png')
+up = pygame.image.load('up.png')
+x,y = 240,120
+position=[(180,90),(180,120),(210,120),(x,y)]
 
-
+setheading = 'right'
+snake_head = right
 
 
 
@@ -25,13 +30,37 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-    x += 30
+        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 = down
+
+    if setheading == 'right':
+        x += 30
+    if setheading == 'left':
+        x -= 30
+    if setheading == 'up':
+        y -= 30
+    else:
+        y += 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
     for i in range(len(position)-1):
         screen.blit(body,position[i])