如何在按下按钮时删除子/精灵？

我正在做一个项目，如果用户点击“种植花园”，它将生成随机数量的花和随机数量的杂草。一旦他们完成了他们的“种植”序列，用户就会看到一个“种植新花园”，其中的花/杂草将从舞台上删除并重新开始。

我绞尽脑汁，这是我离“带走孩子”最近的一次——一个我从来没有理解过的概念哈哈。非常感谢任何帮助/指导。

** 在我复制旧文件时编辑代码**

import flash.events.MouseEvent;
import flash.display.DisplayObject;

// stops the playhead on frame 1
stop();

// random amount of flowers generated
var flowerAmount:int = (Math.ceil((Math.random() * 20)) + 9);
var weedAmount = Math.ceil((Math.random() * 10));


// garden display container
var newGarden:DisplayObjectContainer;

// setting new flower variable equal to the function that creates an instance of the flower
var newFlower_mc:DisplayObject = newFlower();

// flowers currently in the garden
var flowersInGarden:int = 0;
var weedsInGarden:int = 0;


// event listener for the grow button to start the garden
grow_btn.addEventListener(MouseEvent.MOUSE_UP, frameTwo);

// when grow button is clicked go to frame two
function frameTwo(event:MouseEvent) {
    gotoAndPlay(2);
}

// changes the size and position of the flower
function configureFlower(myFlower_mc:DisplayObject) {
    myFlower_mc.x = Math.random() * 400;
    myFlower_mc.y = Math.random() * 200;
    var flowerSize:Number = Math.random() + .5;
    myFlower_mc.height = myFlower_mc.height * flowerSize;
    myFlower_mc.width = myFlower_mc.width * flowerSize;
}
import flash.display.DisplayObject;

// function to create new instance of a flower
function newFlower():DisplayObject {
    var newFlower_mc:DisplayObject = new flower();
    return newFlower_mc;
}

// function to call the create flower function and add flower to sprite 
function createFlower() {
    var myFlower_mc = newFlower();
        configureFlower(myFlower_mc);
        newGarden.addChild(myFlower_mc);
    trace(flowerAmount);
    }

newGarden = new Sprite();

// adds the flower to the stage/sprite and adds to the flower counter
    function showFlowers() {
    createFlower();
    addChild(newGarden);
    flowersInGarden++;
    trace("Flowers:" + flowersInGarden + " " + weedAmount + " weedsingarden" + weedsInGarden);


}
// calls the above function
showFlowers();


// function to create a weed, configure weed and add to the garden sprite
function createWeed(){ 
    var newWeed:DisplayObject; 
    trace("creating weed"); 
    newWeed = new weed(); 
    newGarden.addChild(newWeed); 
    configureFlower(newWeed);
    weedsInGarden++;
}// if all the flowers haven't grown yet, go back to frame 2 until they have

if (flowersInGarden < flowerAmount) {
    gotoAndPlay(2);
}

// if the amount of weeds decided haven't grown yet, create another weed

if (weedsInGarden < weedAmount){ createWeed(); };
stop();

// event listener to grow a new garden
new_btn.addEventListener(MouseEvent.MOUSE_UP, growNewGarden);


// function to create a new garden if there are more than 1 instance in the container
function growNewGarden(event:MouseEvent) {
    while (newGarden.numChildren > 0) {
    stage.removeChild(newFlower_mc); 
        stage.removeChild(newGarden);
        // add a new, fresh sprite
        stage.addChild(newGarden);
        // randomly chooses a number of flowers
        flowerAmount = (Math.ceil((Math.random() * 21)) + 10);
        // resets flower counter to zero
        flowersInGarden = 0;
    gotoAndPlay(2);

}}