Generally speaking, there is no a streamlined way to literally duplicate instances. So, to create a "duplicate" you should create another instance of the same class.
The code below does that - it creates two instance of the same class that (the class) implements your functionality
Logic that accomplishes the functionality of falling object is now encapsulated into a special class FallingThings. Place this class into the same directory where you FLA. To create class (if you don't know yet how it is done):
1. Create a files in the same directory as you FLA.
2. Name this file FallingThings.as.
3. Paste the code below into this file.
On the main timeline place this code:
init();
function init():void
{
var fallingThingsLeft:FallingThings = new FallingThings(stage.stageWidth / 2, stage.stageHeight);
var fallingThingsRight:FallingThings = new FallingThings(stage.stageWidth / 2, stage.stageHeight);
addChild(fallingThingsLeft);
addChild(fallingThingsRight);
fallingThingsRight.x = stage.stageWidth / 2;
}
Class:
package
{
import flash.display.Graphics;
import flash.display.MovieClip;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.TimerEvent;
import flash.utils.Timer;
public class FallingThings extends Sprite
{
// set width
private var w:Number = 0;
// set height
private var h:Number = 0;
private var objectSpawner:Timer;
private var fallers:Array;
private var speed:Number = 10;
public function FallingThings(w:Number, h:Number)
{
this.w = w;
this.h = h;
init();
}
private function init():void
{
fallers = [];
objectSpawner = new Timer(1000);
objectSpawner.addEventListener(TimerEvent.TIMER, createEnemy);
objectSpawner.start();
addEventListener(Event.ENTER_FRAME, dropEnemies);
}
private function createEnemy(e:TimerEvent):void
{
var enemy:Faller = new Faller();
enemy.y = -h;
enemy.x = Math.random() * w;
MovieClip(enemy).cacheAsBitmap = true;
addChild(enemy);
fallers.push(enemy);
drawConnectors();
}
private function dropEnemies(e:Event):void
{
for each (var mc:Faller in fallers)
{
mc.y += speed;
if (mc.y > h * 2)
fallers.splice(fallers.indexOf(removeChild(mc)), 1);
}
drawConnectors();
}
private function drawConnectors():void
{
if (fallers.length == 0)
return;
var g:Graphics = this.graphics;
g.clear();
g.lineStyle(1);
var mc:Faller = fallers[0];
g.moveTo(mc.x, mc.y);
for each (mc in fallers)
g.lineTo(mc.x, mc.y);
}
}
}
1 Correct answer
8
Replies
AdChoices