save project

snake.py

@@ -59,6 +59,8 @@ while True:
         apple_y = random.randint(0,21)*30
     else:
         position.pop(0)
+    if x<0 or x>630 or y<0 or y>450:
+        exit()
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -66,10 +68,12 @@ while True:
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body, position[i])
+        if position[i] == (x,y):
+            exit()
 
     # 将果实画上去
     text = 'Score:'+str(score)
-    info = myfont.render(text,True,(20,20,20))
+    info = myfont.render(text,True,(0,255,0))
     screen.blit(info, (540,10))
     screen.blit(food, (apple_x, apple_y))
     # 刷新画面