save project

snake.py

@@ -4,6 +4,8 @@ from pygame import locals
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 x,y=240,120
+position=[(180,90),(180,120),(210,120),(x,y)]
+setheading="right"
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
 
@@ -19,17 +21,40 @@ while True:
         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":
+                setheading="right"
+            if event.key==locals.K_LEFT and setheading!="right":
+                setheading="left"
+            if event.key==locals.K_UP and setheading!="down":
+                setheading="up"
+            if event.key==locals.K_DOWN and setheading!="up":
+                setheading="down"    
+
+
+    if setheading=="left":                    
+        x-=30
+    elif setheading=="right":                    
+        x+=30
+    elif 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, (x, y))
+    screen.blit(right, position[-1])
     # 将贪吃蛇的身体画上去
-    screen.blit(body, (210, 120))
-    screen.blit(body, (180, 120))
-    screen.blit(body, (180, 90))
+    #screen.blit(body, (210, 120))
+    #screen.blit(body, (180, 120))
+    #screen.blit(body, (180, 90))
+    for i in range(len(position)-1):
+        screen.blit(body,position[i])
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面
-    x+=30
+    #x+=30
     fpsclock.tick(3)
     pygame.display.update()
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