Custom event and private classes
/**
* Copyright Fumio ( http://wonderfl.net/user/Fumio )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/4KBE
*/
package {
import flash.display.Sprite;
import flash.events.Event;
public class BallFollowingMouse extends Sprite {
private var ballCount:uint = 50;
private var speed:Number = 0.2;
public function BallFollowingMouse() {
for (var i:uint = 0; i<ballCount; i++) {
addChild(new Ball(this, 200));
}
addEventListener(Event.ENTER_FRAME, followMouse);
}
private function followMouse(eventObject:Event):void {
dispatchEvent(new BallEvent(BallEvent.FOLLOW, mouseX, mouseY, speed));
}
}
}
import flash.display.Sprite;
import flash.display.Graphics;
import flash.events.Event;
class Ball extends Sprite {
private const deceleration:Number = 0.2;
private var angle:Number;
private var radius:Number;
private var sizeRate:Number = 0.1;
public function Ball(timeline:Sprite, maxRadius:Number) {
var randomRate:Number = Math.random();
angle = 2 * Math.PI * Math.random();
radius = maxRadius * randomRate;
createBall(randomRate);
timeline.addEventListener(BallEvent.FOLLOW, follow);
}
private function createBall(randomRate:Number):void {
var myGraphics:Graphics = graphics;
myGraphics.beginFill(Math.floor(0xFFFFFF * randomRate) + 1);
myGraphics.drawCircle(0, 0, radius * sizeRate);
alpha = 1 - randomRate;
}
private function follow(eventObject:BallEvent):void {
var randomRate:Number = Math.random();
angle += eventObject.speed;
angle%=Math.PI*2;
var nX:Number=eventObject.targetX+radius*Math.cos(angle);
var nY:Number=eventObject.targetY+radius*Math.sin(angle);
x += (nX - x) * deceleration * randomRate;
y += (nY - y) * deceleration * randomRate;
}
}
class BallEvent extends Event {
public static const FOLLOW:String = "follow";
private var _targetX:Number;
private var _targetY:Number;
private var _speed:Number;
public function get targetX():Number {
return _targetX;
}
public function get targetY():Number {
return _targetY;
}
public function get speed():Number {
return _speed;
}
public function BallEvent(event_str:String, myTargetX:Number, myTargetY:Number, mySpeed:Number) {
super(event_str);
_targetX = myTargetX;
_targetY = myTargetY;
_speed = mySpeed;
}
public override function clone():Event {
return new BallEvent(type, targetX, targetY, speed);
}
public override function toString():String {
return formatToString("BallEvent", "type", "bubbles", "cancelable", "eventPhase", "targetX", "targetY", "speed");
}
}