スライム forked from: [QuickBox2D] Soft body
...
@author paq89
/**
* Copyright poiasd ( http://wonderfl.net/user/poiasd )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/ojYC
*/
// forked from paq's [QuickBox2D] Soft body
package
{
import Box2D.Common.Math.b2Vec2;
import com.actionsnippet.qbox.objects.CircleObject;
import com.actionsnippet.qbox.QuickBox2D;
import flash.display.BlendMode;
import flash.display.MovieClip;
import flash.display.Sprite;
import flash.display.StageQuality;
import flash.events.Event;
/**
* ...
* @author paq89
*/
[SWF(backgroundColor="0xFFFFFF", width=465, height=465, frameRate=60)]
public class Main extends Sprite
{
private var _qbox:QuickBox2D;
private var _softbody:/*SoftBody*/Array = [];
public function Main():void
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
// クオリティーを低に
//stage.quality = StageQuality.LOW;
// QuickBox2Dを表示するMovieClipを作成
var mc:MovieClip = new MovieClip();
addChild(mc);
// QuickBox2Dを作成
_qbox = new QuickBox2D(mc);
// 色の設定
_qbox.setDefault( { lineAlpha:0, fillColor:0 } );
_qbox.createStageWalls();
_qbox.mouseDrag();
_qbox.start();
// 箱を2つ作成
_qbox.addBox( { x:12, y:1, width:1, height:1 } );
//_qbox.addBox( { x:12, y:1, width:2, height:2 } );
// Alphaを0にして見えないようにする
_qbox.setDefault( { lineAlpha:0, fillAlpha:0 } );
for (var i:int = 0; i < 1; i++)
{
_softbody[i] = new SoftBody(_qbox, { x:6, y:7, lineAlpha:0, fillColor:0x2485F3, fillAlpha:0.7, radius:3 } );
addChild(_softbody[i]);
}
// イベントリスナー
addEventListener(Event.ENTER_FRAME, loop);
}
private function loop(e:Event):void
{
for each (var sb:SoftBody in _softbody)
{
sb.update();
}
}
}
}
import flash.display.Sprite;
import Box2D.Common.Math.b2Vec2;
import com.actionsnippet.qbox.QuickBox2D;
import com.actionsnippet.qbox.objects.CircleObject;
import com.actionsnippet.qbox.QuickObject;
class Anchor extends CircleObject
{
private var vx:Number = 0;
private var vy:Number = 0;
private var spring:Number = 1.5;
private var friction:Number = 0.1;
private var vec:b2Vec2;
public var target:QuickObject;
private var rot:Number;
public function Anchor(qbox:QuickBox2D, params:Object, target:QuickObject = null, rot:Number = 0)
{
super(qbox, params);
this.target = target;
this.rot = rot;
vec = new b2Vec2();
}
public function update():void
{
if (!target) return;
var targetPos:b2Vec2 = target.body.GetPosition();
var thisPos:b2Vec2 = body.GetPosition();
var dx:Number = Math.sin(rot * Math.PI / 180)*2 + targetPos.x - thisPos.x;
var dy:Number = Math.cos(rot * Math.PI / 180)*2 + targetPos.y - thisPos.y;
var ax:Number = dx * spring;
var ay:Number = dy * spring;
vx += ax;
vy += ay;
vec.x = vx;
vec.y = vy;
body.ApplyForce(vec, thisPos);
vx *= friction;
vy *= friction;
}
}
class SoftBody extends Sprite
{
public var params:Object;
private var _anchor:/*Anchor*/Array = [];
private var qbox:QuickBox2D;
public function SoftBody(qbox:QuickBox2D, params:Object)
{
this.params = params;
this.qbox = qbox;
if (this.params.lineColor == null) this.params.lineColor = 1;
if (this.params.lineAlpha == null) this.params.lineAlpha = 1;
if (this.params.fillColor == null) this.params.fillColor = 0;
if (this.params.fillAlpha == null) this.params.fillAlpha = 1;
if (this.params.radius == null) this.params.radius = 1;
create();
}
private function create():void
{
var rot:Number = 0;
for (var i:int = 0; i < 18; i++)
{
rot+=20;
_anchor[i] = new Anchor(qbox, { x:Math.sin(rot * Math.PI / 180) * params.radius + params.x, y:Math.cos(rot * Math.PI / 180) * params.radius + params.y, radius:0.1 }, _anchor[i - 1], rot);
_anchor[i].shape.m_radius = 0.01 * params.radius;
if (i != 0) qbox.addJoint( { type:QuickBox2D.DISTANCE, a:_anchor[i-1].body, b:_anchor[i].body } );
}
qbox.addJoint( { type:QuickBox2D.DISTANCE, a:_anchor[0].body, b:_anchor[_anchor.length-1].body } );
}
public function update():void
{
var len:uint = _anchor.length;
for (var i:int = 0; i < len; i++) _anchor[i].update();
graphics.clear();
graphics.beginFill(params.fillColor, params.fillAlpha);
graphics.lineStyle(1, params.lineColor, params.lineAlpha);
var mx:Number = (_anchor[0].x + _anchor[1].x) * 15;
var my:Number = (_anchor[0].y + _anchor[1].y) * 15;
graphics.moveTo(mx, my);
for (i = 1; i < len - 1; i++)
{
mx = (_anchor[i].x + _anchor[i + 1].x) * 15;
my = (_anchor[i].y + _anchor[i + 1].y) * 15;
graphics.curveTo(_anchor[i].x * 30, _anchor[i].y * 30, mx, my);
//graphics.lineTo(_anchor[i].x * 30, _anchor[i].y * 30);
}
mx = (_anchor[0].x + _anchor[1].x) * 15;
my = (_anchor[0].y + _anchor[1].y) * 15;
graphics.curveTo(_anchor[len - 1].x * 30, _anchor[len - 1].y * 30, mx, my);
//graphics.lineTo(_anchor[1].x * 30, _anchor[1].y * 30);
mx = (_anchor[1].x + _anchor[11].x) * 15;
my = (_anchor[1].y + _anchor[11].y) * 15;
graphics.beginFill(0xFFFFFF, 0.9);
graphics.drawCircle(mx, my, 14);
graphics.beginFill(0x0, 0.9);
graphics.drawCircle(mx + 1, my, 7);
mx = (_anchor[2].x + _anchor[8].x) * 15;
my = (_anchor[2].y + _anchor[8].y) * 15;
graphics.beginFill(0xFFFFFF, 0.9);
graphics.drawCircle(mx, my, 14);
graphics.beginFill(0x0, 0.9);
graphics.drawCircle(mx - 1, my, 7);
}
}