/**
* Copyright ohisama ( http://wonderfl.net/user/ohisama )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/fBGL
*/
// forked from Nuno.Ribeiro's forked from: Box2Dテスト
// forked from narutohyper's Box2Dテスト
package
{
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
{
CreateBackGround();
view = new View()
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() + 0.05);
}
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)
{
_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, 100);
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;
}
if (sprite && sprite.y > 600)
{
_world.DestroyBody(b);
removeChild(sprite);
}
}
}
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;
}
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 ++ )
{
var angle : Number = divisionAngle * a * Math.PI / 180 ;
var radiusOut : Number = radiusIn + radiusWidth;
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);
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 = 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;
}
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:
beads = new b2PolygonDef();
beads.SetAsBox(radius / SCALE, radius / SCALE);
beadsSp.graphics.drawRect(-radius, -radius, radius * 2, radius * 2)
break;
case 1:
beads = new b2CircleDef();
beads.radius = radius / SCALE;
beadsSp.graphics.drawCircle(0, 0, radius)
break;
default:
beads = new b2PolygonDef();
beads.SetAsBox(radius / SCALE, radius / SCALE);
var vertexCount : uint = 3;
beads.vertexCount = vertexCount;
var h : Number = Math.tan(60 * Math.PI / 180) * radius;
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();
}
}
