save project

my_game.py

@@ -81,4 +81,18 @@ while True:
     screen.blit(obstacle, (rect.x, rect.y)) 
     screen.blit(obstacle, (rect.x, rect.y)) 
     # 刷新画面
     # 刷新画面
     pygame.display.update()
     pygame.display.update()
-    FPS.tick(30)
+    FPS.tick(30)
\ No newline at end of file
+    time += 1
+    if time >= 60:
+        r = ramdon.randint(0,100)
+        if r > 40:
+            obstacle = Block(bush,cacti,stone)
+            block_list.add(obstacle)
+        time = 0
+    for prop in block_list:
+        prop.rect.x -= 8
+        screen.blit(prop.image,(prop.rect.x,prop.rect.y))
+        if prop.rect.x<=0-prop.rect.width:
+            prop.kill()
+    pygame.display.update()
+    FPS.tick(60)
\ No newline at end of file