flashbox2d测试

flashbox2d测试lib

package crawlingtosea.box2d{import flash.display.Sprite;import flash.events.Event;import Box2D.Collision.b2Pair;import Box2D.Collision.Shapes.b2CircleShape;import Box2D.Collision.Shapes.b2PolygonShape;import Box2D.Collision.Shapes.b2Shape;import Box2D.Common.Math.b2Vec2;import Box2D.Dynamics.b2Body;import Box2D.Dynamics.b2BodyDef;import Box2D.Dynamics.b2DebugDraw;import Box2D.Dynamics.b2FixtureDef;import Box2D.Dynamics.b2World;/** * ... * @author mengtianwxs */public class GameWorld extends Sprite {private var worldScale:Number = 30;private var world:b2World;private var isDebugDraw:Boolean=false;private var isRenderSkin:Boolean=false;private var radToDeg:Number=180 / Math.PI;private const dt:Number=1/30;public function GameWorld(isRender:Boolean=true,isDebug:Boolean=false) {world = new b2World(new b2Vec2(0, 10), true);if (isRender) {addEventListener(Event.ENTER_FRAME, render);}if(isDebug){var debugSprite:Sprite=new Sprite();addChild(debugSprite);var debug:b2DebugDraw=new b2DebugDraw();debug.SetAlpha(0.3);debug.SetLineThickness(2);debug.SetSprite(debugSprite);debug.SetDrawScale(30);debug.SetFlags(b2DebugDraw.e_shapeBit|b2DebugDraw.e_jointBit);world.SetDebugDraw(debug);isDebugDraw=isDebug;}}private function render(e:Event):void {world.Step(dt, 10, 10);//world.ClearForces();if(isDebugDraw){world.DrawDebugData();}if(isRenderSkin){for (var b:b2Body = world.GetBodyList(); b; b = b.GetNext()){if(b.GetUserData()){b.GetUserData().asset.x = b.GetPosition().x * 30;b.GetUserData().asset.y = b.GetPosition().y * 30;b.GetUserData().asset.rotation = b.GetAngle() * radToDeg;b.ResetMassData();}}}}public function createAABBWorld(w:int=15):b2Body{var _w:int=w;var _hw:int=_w/2;var _sw:int=this.stage.stageWidth;var _sh:int=this.stage.stageHeight;var _hsw:int=this.stage.stageWidth/2;var _hsh:int=this.stage.stageHeight/2;/*var b1:b2Body=createBoxShape(_hsw,_hw,_sw,_w);var b2:b2Body=createBoxShape(_hw,_hsh,_w,_sh);var b3:b2Body=createBoxShape(_sw-_hw, _hsh,_w,_sh);var b4:b2Body=createBoxShape(_hsw,_sh-_hw,_sw,_w);*/var shapeVec:Vector.<b2PolygonShape>=new Vector.<b2PolygonShape>();var b2bodydef:b2BodyDef = new b2BodyDef();b2bodydef.type = 0;var b2fixture:b2FixtureDef = new b2FixtureDef();b2fixture.density = 1;b2fixture.restitution = 0;var b2body:b2Body = world.CreateBody(b2bodydef);var vec1:b2Vec2 = new b2Vec2(_hsw/worldScale,_hw/worldScale);var shape1:b2PolygonShape =b2PolygonShape.AsOrientedBox(_sw/2/worldScale,_w/2/worldScale,vec1);shapeVec.push(shape1);var vec2:b2Vec2=new b2Vec2(_hw/worldScale,_hsh/worldScale);var shape2:b2PolygonShape= b2PolygonShape.AsOrientedBox(_w/2/worldScale,_sh/2/worldScale,vec2);shapeVec.push(shape2);var vec3:b2Vec2=new b2Vec2((_sw-_hw)/worldScale,_hsh/worldScale);var shape3:b2PolygonShape=b2PolygonShape.AsOrientedBox(_w/2/worldScale,_sh/2/worldScale,vec3);shapeVec.push(shape3);var vec4:b2Vec2=new b2Vec2(_hsw/worldScale,(_sh-_hw)/worldScale);var shape4:b2PolygonShape=b2PolygonShape.AsOrientedBox(_sw/2/worldScale,_w/2/worldScale,vec4);shapeVec.push(shape4);trace(shapeVec.length);for(var i:int=0;i<=(shapeVec.length-1);i++){b2fixture.shape=shapeVec[i];b2body.CreateFixture(b2fixture);}return b2body; }public function pushB2ShapeToWorld(b2shape:b2Shape,posx:int,posy:int):void{                }public function createCircleShape(posx:Number,posy:Number,radius:int,whatisit:int=0):b2Body{var bddf:b2BodyDef=new b2BodyDef();bddf.position.Set(posx/worldScale,posy/worldScale);bddf.type=whatisit;var shape:b2CircleShape=new b2CircleShape(radius/worldScale);var b2fd:b2FixtureDef=new b2FixtureDef();b2fd.density=5;b2fd.shape=shape;var b2body:b2Body=world.CreateBody(bddf);b2body.CreateFixture(b2fd);return b2body;}public function createBoxShape(posx:int, posy:int, w:Number, h:Number,whatisit:int=0):b2Body{var bddf:b2BodyDef=new b2BodyDef();bddf.position.Set(posx/worldScale,posy/worldScale);bddf.type=whatisit;var shape:b2PolygonShape=new b2PolygonShape();shape.SetAsBox(w/2/worldScale,h/2/worldScale);var b2fd:b2FixtureDef=new b2FixtureDef();b2fd.density=5;b2fd.shape=shape;var b2body:b2Body=world.CreateBody(bddf);b2body.CreateFixture(b2fd);return b2body;}public function createBoxAndBindSkin(posx:int, posy:int, w:Number, h:Number,whatisit:int=0, s:String="", asset:Sprite=null):b2Body{var bodyDef:b2BodyDef = new b2BodyDef();bodyDef.position.Set(posx/ worldScale, posy/ worldScale);bodyDef.type = whatisit;bodyDef.userData = new Object();bodyDef.userData.name = s;if((asset!=null)&&(asset is Sprite)){bodyDef.userData.asset = asset;addChild(bodyDef.userData.asset);isRenderSkin=true;}var polygonShape:b2PolygonShape = new b2PolygonShape();polygonShape.SetAsBox(w / 2 / worldScale, h / 2 / worldScale);var fixtureDef:b2FixtureDef = new b2FixtureDef();fixtureDef.shape = polygonShape;var b2body:b2Body = world.CreateBody(bodyDef);b2body.CreateFixture(fixtureDef);return b2body;}public function ressetB2FDByName(s:String="",b2fd:b2FixtureDef=null):void{if((s!="")&&(b2fd!=null)){for (var b:b2Body = world.GetBodyList(); b; b = b.GetNext()){if(b.GetUserData().name==s){b.GetFixtureList().SetFriction(b2fd.friction);b.GetFixtureList().SetRestitution(b2fd.restitution);b.GetFixtureList().SetDensity(b2fd.density);b.GetFixtureList().SetSensor(b2fd.isSensor);b.GetFixtureList().SetFilterData(b2fd.filter);b.ResetMassData();}}}}}}