save project

snake.py

 import pygame
 from pygame import locals
+import sys
 
 # 初始化pygame，为使用硬件做准备
 pygame.init()
@@ -9,12 +10,20 @@ fps = pygame.time.Clock()
 headX = 240
 headY = 120
 
+bodyFX = 0
+bodyFY = 0
+
+setheading = "right"
+
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 380))
 
 # 背景
 background = pygame.image.load('bg.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')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 
@@ -22,21 +31,43 @@ 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()
+            sys.exit()
+        if event.type == locals.K_d and setheading != "left":
+            setheading = "right"
+        elif event.type == locals.K_a and setheading != "right":
+            setheading = "left"
+        elif event.type == locals.K_w and setheading != "down":
+            setheading = "up"
+        elif event.type == locals.K_s and setheading != "up":
+            setheading = "down"
+    
     position = [(headX, headY)]
+
+    
+
+    if setheading == "right":
+        # 将贪吃蛇画上去
+        screen.blit(right, position[0])
+    elif setheading == "left":
+        # 将贪吃蛇画上去
+        screen.blit(left, position[0])
+    elif setheading == "up":
+        # 将贪吃蛇画上去
+        screen.blit(up, position[0])
+    elif setheading == "down":
+        # 将贪吃蛇画上去
+        screen.blit(down, position[0])
+
     # 将背景图画上去
     screen.blit(background, (0, 0))
-    # 将贪吃蛇画上去
-    screen.blit(right, position[0])
+
     # 将贪吃蛇的身体画上去
-    screen.blit(body, (210, 120))
+    screen.blit(body, (0, 0))
     screen.blit(body, (180, 120))
     screen.blit(body, (180, 90))
     # 将果实画上去
     screen.blit(food, (360, 300))
 
-    headX += 30
-
     # 刷新画面
     pygame.display.update()