Box2Dテスト
前作ったkaleidoscopeのBox2D部分
同じ物を、QuickBox2Dで作ってみるのでとりあえず投稿
/**
* Copyright narutohyper ( http://wonderfl.net/user/narutohyper )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/hCEe
*/
package {
/*
前作ったkaleidoscopeのBox2D部分
同じ物を、QuickBox2Dで作ってみるのでとりあえず投稿
*/
import Box2D.Dynamics.b2Body;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Loader;
import flash.display.Shape;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.geom.Matrix;
import flash.geom.Point;
import flash.geom.Rectangle;
import flash.net.URLRequest;
import flash.system.LoaderContext;
import flash.display.DisplayObject;
[SWF(width = 465, height = 465, frameRate = 60)]
public class SimpleDemo extends Sprite {
private var view:View;
private var count:int;
private var donut:b2Body;
private var loaded:Boolean;
private var bmp:Bitmap;
public function SimpleDemo():void {
// 描画コンテナ
trace('描画コンテナ')
CreateBackGround();
view = new View(true)
this.addChild(view);
donut = view.GetWorldBody();
view.CreateRegularPolygon(3,200 / View.SCALE, 50 / View.SCALE,new Point(240 / View.SCALE, 240/ View.SCALE),donut);
for (var i:uint=0;i<30;i++) {
view.CreateBeads((Math.random()*60+240) / View.SCALE, (Math.random()*60+240) / View.SCALE);
}
this.addEventListener(Event.ENTER_FRAME, RotateDonuts);
}
private function RotateDonuts(e:Event):void {
donut.SetXForm(donut.GetPosition(), donut.GetAngle() + 0.01);
}
private function CreateBeads(event:MouseEvent) : void {
view.CreateBeads(event.stageX / View.SCALE, event.stageY / View.SCALE);
}
private function CreateBackGround():void {
var sprite:Sprite = new Sprite();
sprite.graphics.beginFill(0xFFFFFF, 1);
sprite.graphics.drawRect(0, 0, stage.stageWidth, stage.stageHeight);
addChild( sprite );
}
}
}
import Box2D.Collision.b2AABB;
import Box2D.Collision.Shapes.b2CircleDef;
import Box2D.Dynamics.b2Body;
import Box2D.Dynamics.b2BodyDef;
import Box2D.Dynamics.b2DebugDraw;
import Box2D.Dynamics.b2World;
import Box2D.Common.Math.b2Vec2;
import Box2D.Collision.Shapes.b2PolygonDef;
import flash.display.Graphics;
import flash.display.Sprite;
import flash.events.Event;
import flash.external.ExternalInterface;
import flash.net.URLRequest;
import flash.text.TextField;
import flash.utils.getTimer;
import flash.geom.Point;
internal class View extends Sprite
{
private var _world:b2World;
private var _gravity:b2Vec2;
private var _doSleep:Boolean;
private var _worldAABB:b2AABB;
private var _body:b2BodyDef;
private var _bodyPolygon:b2Body;
public static var SCALE:int = 100;
public function View(debug:Boolean = false)
{
// world;
_worldAABB = new b2AABB();
_worldAABB.lowerBound.Set( -500.0, -500.0);
_worldAABB.upperBound.Set( 500.0, 500.0);
_gravity = new b2Vec2(0.0, 6.0);
_doSleep = true;
_world = new b2World(_worldAABB, _gravity, _doSleep);
_body = new b2BodyDef();
_body.position.Set(0,0);
_bodyPolygon = _world.CreateBody(_body);
if ( debug ) {
Debug();
}
addEventListener(Event.ENTER_FRAME, EnterFrame);
}
public function GetWorldBody() :b2Body
{
return _world.CreateBody(_body);
}
private function EnterFrame(e:Event):void {
_world.Step(1 / 60, 10);
// Sprite の場所を更新する
for (var b:b2Body = _world.GetBodyList(); b; b = b.GetNext()) {
var sprite:Sprite = b.GetUserData() as Sprite;
if (sprite){
sprite.x = b.GetWorldCenter().x * SCALE;
sprite.y = b.GetWorldCenter().y * SCALE;
sprite.rotation = b.GetAngle() * 180 / Math.PI;
}
// 画面外に出たオブジェクトを削除する
if (sprite && sprite.y > 600){
_world.DestroyBody(b);
removeChild(sprite);
}
}
}
//debug
private function Debug() : void
{
var dbgDraw:b2DebugDraw = new b2DebugDraw();
dbgDraw.m_sprite = this;
dbgDraw.m_drawScale = SCALE;
dbgDraw.m_fillAlpha= 0.8;
dbgDraw.m_lineThickness= 1.0;
dbgDraw.m_alpha=1.0;
dbgDraw.m_xformScale = 1.0;
dbgDraw.m_drawFlags = b2DebugDraw.e_shapeBit;
//_world.SetDebugDraw(dbgDraw);
trace("debug");
}
public function CreateRegularPolygon( num:int, radiusIn:Number, radiusWidth:Number,center:Point, b2body:b2Body = null ) : b2Body {
if ( b2body == null ) {
b2body = _world.CreateBody(_body);
}
var divisionAngle:Number = 360 / num;
var baseSp:Sprite=new Sprite()
for ( var a:int = 0; a < num; a ++ ) {
// 計算のためのtmp
var angle:Number = divisionAngle * a * Math.PI / 180 ;
var radiusOut:Number = radiusIn + radiusWidth;
// 初期ﾎﾟｲﾝﾄ
var cos:Number = Math.cos(angle);
var sin:Number = Math.sin(angle);
var rI:Point = new Point(cos * radiusIn, sin * radiusIn);
var rO:Point = new Point(cos * radiusOut, sin * radiusOut);
// N 次のﾎﾟｲﾝﾄ
var angleN:Number = divisionAngle * (a+1) * Math.PI / 180 ;
var cosN:Number = Math.cos(angleN);
var sinN:Number = Math.sin(angleN);
var rIN:Point = new Point(cosN * radiusIn, sinN * radiusIn);
var rON:Point = new Point(cosN * radiusOut, sinN * radiusOut);
var poly:b2PolygonDef = new b2PolygonDef();
poly.vertexCount = 4;
poly.vertices[0].Set(rI.x, rI.y);
poly.vertices[1].Set(rO.x, rO.y);
poly.vertices[2].Set(rON.x, rON.y);
poly.vertices[3].Set(rIN.x, rIN.y );
baseSp.graphics.beginFill(0x669966)
baseSp.graphics.moveTo(rI.x*SCALE, rI.y*SCALE)
baseSp.graphics.lineTo(rO.x*SCALE, rO.y*SCALE)
baseSp.graphics.lineTo(rON.x*SCALE, rON.y*SCALE)
baseSp.graphics.lineTo(rIN.x*SCALE, rIN.y*SCALE)
baseSp.graphics.endFill();
//poly.density = 1;
//poly.restitution = 0.4;
//poly.friction = 0.1;
poly.density = 0;
poly.restitution = 0;
poly.friction = 0;
b2body.CreateShape(poly);
}
b2body.m_userData = new Sprite();
b2body.GetUserData().addChild(baseSp);
b2body.SetXForm(new b2Vec2(center.x, center.y),0)
addChild(b2body.GetUserData());
return b2body;
}
//-----------------------------------------------------------
//ビーズを作成する
//-----------------------------------------------------------
public function CreateBeads( x:Number, y:Number):void {
var b2body:b2Body = _world.CreateBody(_body);
var radius:Number=(Math.random() * 5 + 10)
var beads:*
var beadsSp:Sprite=new Sprite()
beadsSp.graphics.beginFill(0xFFFFFF * Math.random());
switch (Math.round(Math.random()*3)) {
case 0:
trace('beads（四角）作成')
//四角の作成
beads= new b2PolygonDef();
beads.SetAsBox(radius / SCALE, radius / SCALE);
beadsSp.graphics.drawRect(-radius,-radius,radius*2,radius*2)
break;
case 1:
trace('beads（丸）作成')
//丸の作成
beads = new b2CircleDef();
beads.radius = radius / SCALE;
beadsSp.graphics.drawCircle(0,0,radius)
break;
default:
trace('beads（三角）作成')
beads= new b2PolygonDef();
beads.SetAsBox(radius / SCALE, radius / SCALE);
var vertexCount:uint=3;
beads.vertexCount = vertexCount;
// 底辺の半分の長さと高さを設定
var h:Number=Math.tan(60 * Math.PI / 180) * radius;
// 角の数を設定して頂点の位置を設定する
beads.vertices[0].Set(-1 * radius / SCALE, -1 * h / 2 / SCALE);
beads.vertices[1].Set(radius / SCALE, -1 * h / 2 / SCALE);
beads.vertices[2].Set(0, h / 2 / SCALE);
beadsSp.graphics.moveTo(-1 * radius, -1 * h / 2);
beadsSp.graphics.lineTo(radius, -1 * h / 2);
beadsSp.graphics.lineTo(0, h / 2);
beadsSp.graphics.endFill();
break;
}
beads.density = 6;
beads.restitution = 0;
beads.friction = 0;
b2body.CreateShape(beads);
b2body.SetXForm(new b2Vec2(x ,y), 0);
b2body.m_userData = new Sprite();
b2body.GetUserData().x = b2body.GetWorldCenter().x;
b2body.GetUserData().y = b2body.GetWorldCenter().y;
b2body.GetUserData().addChild( beadsSp );
addChild(b2body.GetUserData());
b2body.SetMassFromShapes();
}
}