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flash on 2009-7-16 forked from: flash on 2009-7-16
- // forked from tmn's flash on 2009-7-16
- //参考文献「ActionScript3.0 アニメーション」Keith Peters 永井 勝則
- package{
- import flash.display.Sprite;
- import flash.display.StageAlign;
- import flash.display.StageScaleMode;
- import flash.events.Event;
- import flash.events.MouseEvent;
- import funnel.*;
- [SWF(backgroundColor="0xFFFFFF", frameRate="30")]
- public class ballballball extends Sprite{
- private var ball:Ball;
- private var ball1:Ball;
- private var vx:Number;
- private var vy:Number;
- private var spring:Number = 0.05;
- private var gravity:Number = .5;
- private var oldX:Number;
- private var oldY:Number;
- private var gio:Gainer;
- private var flasher0:Osc;
- private var flasher1:Osc;
- private var balls:Array;
- private var numBalls:Number = 10;
- public function ballballball(){
- init();
- }
- private function init():void{
- stage.scaleMode = StageScaleMode.NO_SCALE;
- stage.align = StageAlign.TOP_LEFT;
- balls = new Array();
- for(var i:uint = 0; i < numBalls; i++){
- var ball:Ball = new Ball(Math.random() * 30 + 20, Math.random() * 0xFFFFFF);
- 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);
- ball.addEventListener(MouseEvent.MOUSE_DOWN, onMousedown);
- balls.push(ball);
- }
- addEventListener(Event.ENTER_FRAME, onEnterframe);
- gio = new Gainer();
- flasher0 = new Osc(Osc.IMPULSE, 1, 1, 0, 0, 1);
- gio.digitalOutput(0).filters = [flasher0];
- flasher1 = new Osc(Osc.IMPULSE,1, 1, 0, 0, 1);
- gio.digitalOutput(1).filters = [flasher1];
- }
- private function onEnterframe(event:Event):void{
- var left:Number = 0;
- var right:Number = stage.stageWidth;
- var top:Number = 0;
- var bottom:Number = stage.stageHeight;
- for(var i:uint = 0; i < numBalls - 1; i++){
- var ball0:Ball = balls[ i ];
- for(var j:uint = 0; j < numBalls; j++){
- var ball1:Ball = balls[ j ];
- var dx:Number = ball1.x - ball0.x;
- var dy:Number = ball1.y - ball0.y;
- var dist:Number = Math.sqrt(dx * dx + dy * dy);
- var minDist:Number = ball0.radius + ball1.radius;
- if(dist < minDist){
- var angle:Number = Math.atan2(dy, dx);
- var tx:Number = ball0.x + Math.cos(angle) * minDist;
- var ty:Number = ball0.y + Math.sin(angle) * minDist;
- var ax:Number = (tx - ball1.x) * spring;
- var ay:Number = (ty - ball1.y) * spring;
- ball0.vx -= ax;
- ball0.vy -= ay;
- ball1.vx += ax;
- ball1.vy += ay;
- }
- }
- }
- for(i = 0; i < numBalls; i++){
- var ball:Ball = balls[ i ];
- move(ball);
- }
- }
- private function move(ball:Ball):void{
- ball.y += ball.vy;
- if(ball.x + ball.radius > stage.stageWidth){
- ball.x = stage.stageWidth - ball.radius;
- ball.vx *= -1;
- } else if(ball.x - ball.radius < 0){
- ball.x = ball.radius;
- ball.vx *= -1;
- }
- if(ball.y + ball.radius > stage.stageHeight){
- ball.y = stage.stageHeight - ball.radius;
- ball.vy *= -1;
- flasher0.reset();
- flasher0.start();
- gio.digitalOutput(0).value = 1;
- } else if (ball.y - ball.radius < 0){
- ball.y = ball.radius;
- ball.vy *= -1;
- flasher1.reset();
- flasher1.start();
- gio.digitalOutput(1).value = 1;
- }
- }
- private function onMousedown(event:MouseEvent):void{
- for(var i:uint = 0; i < balls.length; i++){
- if(balls[i] == Ball(event.target)){
- oldX = Ball(event.target).x;
- oldY = Ball(event.target).y;
- stage.addEventListener(MouseEvent.MOUSE_UP, onMouseup);
- Ball(event.target).startDrag();
- removeEventListener(Event.ENTER_FRAME, onEnterframe);
- addEventListener(Event.ENTER_FRAME, trackVelocity);
- }
- }
- for(var n:Number = 0; n < 4; n++){
- gio.digitalOutput(n).value = 0;
- }
- }
- //ボールを離した時、enterFrameハンドラを入れ替え、trackVelocityを削除し、onEnterFrameを追加
- private function onMouseup(event:MouseEvent):void{
- for(var i:uint = 0; i < balls.length; i++){
- if(balls[i] == Ball(event.target)){
- stage.removeEventListener(MouseEvent.MOUSE_UP, onMouseup);
- Ball(event.target).stopDrag();
- removeEventListener(Event.ENTER_FRAME, trackVelocity);
- addEventListener(Event.ENTER_FRAME, onEnterframe);
- }
- }
- }
- //ボールの現在のx, y位置からそれぞれoldX,oldYを引き=現在の速度が分かる → その値をvx, vyに保持 oldX, oldYをボールの現在位置に再設定
- private function trackVelocity(event:Event):void{
- for(var i:uint = 0; i < balls.length; i++){
- if(balls[i] == event.target){
- vx = Ball(event.target).x - oldX;
- vy = Ball(event.target).y - oldY;
- oldX = Ball(event.target).x;
- oldY = Ball(event.target).y;
- }
- }
- }
- }
- }
- import flash.display.Sprite;
- 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 = 10, color:uint = 0xFFFFFF){
- this.radius = radius;
- this.color = color;
- init();
- }
- public function init():void{
- graphics.beginFill(color);
- graphics.drawCircle(0, 0, radius);
- graphics.endFill();
- }
- }
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