save project

snake.py

@@ -57,29 +57,32 @@ while True:
         y -= 30
     else:
         y += 30
+    if x<0:
+        x=630
+    if x>630:
+        x=0
+    if y<0:
+        y=450
+    if y>450:
+        y=0
     if x==apple_x and y==apple_y:
         num1=random.randint(1,22)
         num2=random.randint(1,16)
         score=+10
         apple_x=30*num1-30
         apple_y=30*num2-30
-        #
     else:
         position.pop(0)
     position.append((x, y))
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
+    
     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])
     # if x<0 or x>630 or y<0 or y>450:
-    if x<0 :
-        x=-30
-    if y<0 or y>450:
-        y=-30
-
     #exit()
     
     # 将果实画上去