Flash as3 Var movieClip duplicates

Question

有多个影片剪辑能够在网格上移动，一旦拖动它，它似乎就会复制，而"原始"仍然存在。 是什么导致它在我的代码中重复？

import flash.display.MovieClip
[SWF(width = 1300, height = 1000)]
var tileSize: int = 100;
var cols: int = stage.stageWidth / tileSize;
var rows: int = stage.stageHeight / tileSize;
var grid: Sprite = Sprite(addChild(new Sprite()));
grid.graphics.lineStyle(0, 0x000000, 0);
var i: int = 0;
for (i = 1; i < cols; i++) {
var posX: Number = i * tileSize
grid.graphics.moveTo(posX, 0);
grid.graphics.lineTo(posX, stage.stageHeight);
}
for (i = 1; i < rows; i++) {
var posY: Number = i * tileSize
grid.graphics.moveTo(0, posY);
grid.graphics.lineTo(stage.stageWidth, posY);

var ball: the_ball = new the_ball();
addChild(ball);
ball.x = tileSize * 5;
ball.y = tileSize * 5;
ball.buttonMode = true;
ball.addEventListener(MouseEvent.MOUSE_DOWN, onDown);
function onDown(evt: MouseEvent): void {
addEventListener(Event.ENTER_FRAME, onRunSnapping);
}
function onRunSnapping(evt: Event): void {
ball.x = Math.round(mouseX / tileSize) * tileSize;
ball.y = Math.round(mouseY / tileSize) * tileSize;
}
stage.addEventListener(MouseEvent.MOUSE_UP, onUp);
function onUp(evt: MouseEvent): void {
removeEventListener(Event.ENTER_FRAME, onRunSnapping);
}
}

Answer 1

它不是重复的，只是有许多电影剪辑堆叠在一起。 您为在完全相同的位置上添加的每一行添加一个新球。

我不知道您希望球如何分配，但请尝试更换ball.y = tileSize * 5;ball.y = posY;看看我在说什么。