save project

snake.py

@@ -54,9 +54,12 @@ while True:
         y += 30
     position.append((x, y))
     if x==apple_x and y==apple_y:
-        apple_x=random.randint(0,660)
-        apple_y=random.randint(0,480)
-    position.pop(0)
+        z1=random.randint(0,22)
+        z2=random.randint(0,16)
+        apple_x=z1*30-30
+        apple_y=z2*30-30
+    else:
+        position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -69,4 +72,4 @@ while True:
     screen.blit(food, (apple_x, apple_y))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(4)
\ No newline at end of file