[Study] AS 3.0 Animation ch09_01
/**
* Copyright nmrtmnr ( http://wonderfl.net/user/nmrtmnr )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/hxX2
*/
package {
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.text.TextField;
import flash.events.Event;
import flash.events.MouseEvent;
public class Bubbles extends Sprite {
private var balls:Array;
private var numBalls:Number = 10;
private var centerBall:Ball;
private var bounce:Number = -1;
private var spring:Number = 0.2;
private var rand:Number;
private var ballScale:Number;
public function Bubbles() {
init();
}
private function init():void {
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
balls = new Array();
centerBall = new Ball(90);
addChild(centerBall);
centerBall.x = stage.stageWidth / 2;
centerBall.y = stage.stageHeight / 2;
for(var i:uint = 0; i < numBalls; i++) {
rand = Math.random() * 100;
if(rand < 50) {
ballScale = Math.random() * 10 + 5;
} else {
ballScale = Math.random() * 15 + 30;
}
var ball:Ball = new Ball(ballScale, 0x1c1c1c);
ball.x = Math.random() * stage.stageWidth;
ball.y = Math.random() * stage.stageHeight;
ball.vx = Math.random() * 6 - 3;
ball.vy = Math.random() * 6 - 3;
addChild(ball);
balls.push(ball);
}
addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
private function onEnterFrame(event:Event):void {
for(var i:uint = 0; i < numBalls; i++) {
var ball:Ball = balls[i];
move(ball);
var dx:Number = ball.x - centerBall.x;
var dy:Number = ball.y - centerBall.y;
var dist:Number = Math.sqrt(dx * dx + dy * dy);
var minDist:Number = ball.radius + centerBall.radius;
if(dist < minDist) {
var angle:Number = Math.atan2(dy, dx);
var tx:Number = centerBall.x + Math.cos(angle) * minDist;
var ty:Number = centerBall.y + Math.sin(angle) * minDist;
ball.vx += (tx - ball.x) * spring;
ball.vy += (ty - ball.y) * spring;
}
}
}
private function move(ball:Ball):void {
ball.x += ball.vx;
ball.y += ball.vy;
if(ball.x + ball.radius > stage.stageWidth) {
ball.x = stage.stageWidth - ball.radius;
ball.vx *= bounce;
} else if (ball.x - ball.radius < 0) {
ball.x = ball.radius;
ball.vx *= bounce;
}
if(ball.y + ball.radius > stage.stageHeight) {
ball.y = stage.stageHeight - ball.radius;
ball.vy *= bounce;
} else if (ball.y - ball.radius < 0) {
ball.y = ball.radius;
ball.vy *= bounce;
}
}
}
}
import flash.display.Sprite;
// Boxクラス
class Box extends Sprite {
private var w:Number;
private var h:Number;
private var color:uint;
public var vx:Number;
public var vy:Number;
public function Box(width:Number = 50, height:Number = 50, color:uint = 0xff0000) {
w = width;
h = height;
this.color = color;
init();
}
public function init():void {
graphics.beginFill(color);
graphics.drawRect(-w / 2, -h / 2, w, h);
graphics.endFill();
}
}
// ↑↑↑
// Arrowクラス
class Arrow extends Sprite {
public function Arrow() {
init();
}
private function init():void {
graphics.lineStyle(1, 0, 1);
graphics.beginFill(0xffff00);
graphics.moveTo(-50, -25);
graphics.lineTo(0, -25);
graphics.lineTo(0, -50);
graphics.lineTo(50, 0);
graphics.lineTo(0, 50);
graphics.lineTo(0, 25);
graphics.lineTo(-50, 25);
graphics.lineTo(-50, -25);
graphics.endFill();
}
}
// ↑↑↑
// Ballクラス
class Ball extends Sprite {
public var radius:Number;
public var color:uint;
public var vx:Number = 0;
public var vy:Number = 0;
public function Ball(radius:Number = 40, color:uint=0xff0000) {
this.radius = radius;
this.color = color;
init();
}
private function init():void {
graphics.beginFill(color);
graphics.drawCircle(0, 0, radius);
graphics.endFill();
}
}
// ↑↑↑