Update physics::Fixture

src/kiwano-physics/Body.cpp

@@ -69,40 +69,35 @@ namespace kiwano
 			UpdateFromActor();
 		}
 
-		PhysicFixture PhysicBody::AddShape(PhysicShape* shape, float density, float friction, float restitution)
+		PhysicFixture PhysicBody::AddFixture(PhysicShape* shape, const PhysicFixture::Param& param)
 		{
 			KGE_ASSERT(body_ && world_);
-
+			return PhysicFixture(this, shape, param);
-			if (shape)
-			{
-				return PhysicFixture::Create(this, shape, density, friction, restitution);
-			}
-			return PhysicFixture();
 		}
 
 		PhysicFixture PhysicBody::AddCircleShape(float radius, float density)
 		{
-			return AddShape(&PhysicCircleShape(radius), density);
+			return AddFixture(&PhysicCircleShape(radius), PhysicFixture::Param(density));
 		}
 
 		PhysicFixture PhysicBody::AddBoxShape(Vec2 const& size, float density)
 		{
-			return AddShape(&PhysicBoxShape(size), density);
+			return AddFixture(&PhysicBoxShape(size), PhysicFixture::Param(density));
 		}
 
 		PhysicFixture PhysicBody::AddPolygonShape(Vector<Point> const& vertexs, float density)
 		{
-			return AddShape(&PhysicPolygonShape(vertexs), density);
+			return AddFixture(&PhysicPolygonShape(vertexs), PhysicFixture::Param(density));
 		}
 
 		PhysicFixture PhysicBody::AddEdgeShape(Point const& p1, Point const& p2, float density)
 		{
-			return AddShape(&PhysicEdgeShape(p1, p2), density);
+			return AddFixture(&PhysicEdgeShape(p1, p2), PhysicFixture::Param(density));
 		}
 
 		PhysicFixture PhysicBody::AddChainShape(Vector<Point> const& vertexs, bool loop, float density)
 		{
-			return AddShape(&PhysicChainShape(vertexs, loop), density);
+			return AddFixture(&PhysicChainShape(vertexs, loop), PhysicFixture::Param(density));
 		}
 
 		void PhysicBody::RemoveFixture(PhysicFixture const& fixture)
@@ -165,7 +160,7 @@ namespace kiwano
 			}
 		}
 
-		void PhysicBody::GetMassData(float* mass, Point* center, float* inertia)
+		void PhysicBody::GetMassData(float* mass, Point* center, float* inertia) const
 		{
 			KGE_ASSERT(body_ && world_);
 

src/kiwano-physics/Body.h

@@ -52,8 +52,10 @@ namespace kiwano
 			// 初始化
 			void Init(PhysicWorld* world, Actor* actor);
 
+			// 警속셸야
+			PhysicFixture AddFixture(PhysicShape* shape, const PhysicFixture::Param& param);
+
 			// 添加形状
-			PhysicFixture AddShape(PhysicShape* shape, float density = 0.f, float friction = 0.2f, float restitution = 0.f);
 			PhysicFixture AddCircleShape(float radius, float density = 0.f);
 			PhysicFixture AddBoxShape(Vec2 const& size, float density = 0.f);
 			PhysicFixture AddPolygonShape(Vector<Point> const& vertexs, float density = 0.f);
@@ -99,7 +101,7 @@ namespace kiwano
 			float GetInertia() const						{ KGE_ASSERT(body_); return body_->GetInertia(); }
 
 			// 质量数据
-			void GetMassData(float* mass, Point* center, float* inertia);
+			void GetMassData(float* mass, Point* center, float* inertia) const;
 			void SetMassData(float mass, Point const& center, float inertia);
 			void ResetMassData();
 

src/kiwano-physics/Fixture.cpp

@@ -38,7 +38,8 @@ namespace kiwano
 			SetB2Fixture(fixture);
 		}
 
-		PhysicFixture PhysicFixture::Create(PhysicBody* body, PhysicShape* shape, float density, float friction, float restitution)
+		PhysicFixture::PhysicFixture(PhysicBody* body, PhysicShape* shape, const Param& param)
+			: PhysicFixture()
 		{
 			KGE_ASSERT(body);
 
@@ -48,14 +49,13 @@ namespace kiwano
 
 				b2Body* b2body = body->GetB2Body();
 				b2FixtureDef fd;
-				fd.density = density;
+				fd.density = param.density;
-				fd.friction = friction;
+				fd.friction = param.friction;
-				fd.restitution = restitution;
+				fd.restitution = param.restitution;
 				fd.shape = shape->GetB2Shape();
 				auto fixture = b2body->CreateFixture(&fd);
-				return PhysicFixture(fixture);
+				SetB2Fixture(fixture);
 			}
-			return PhysicFixture();
 		}
 
 		PhysicBody* PhysicFixture::GetBody()
@@ -82,5 +82,36 @@ namespace kiwano
 			return PhysicFixture(fixture_->GetNext());
 		}
 
+		void PhysicFixture::GetMassData(float* mass, Point* center, float* inertia) const
+		{
+			KGE_ASSERT(fixture_);
+
+			const PhysicBody* body = GetBody();
+			KGE_ASSERT(body);
+
+			const PhysicWorld* world = body->GetWorld();
+			KGE_ASSERT(world);
+
+			b2MassData data;
+			fixture_->GetMassData(&data);
+
+			if (mass) *mass = data.mass;
+			if (center) *center = world->World2Stage(data.center);
+			if (inertia) *inertia = data.I;
+		}
+
+		bool PhysicFixture::TestPoint(const Point& p) const
+		{
+			KGE_ASSERT(fixture_);
+
+			const PhysicBody* body = GetBody();
+			KGE_ASSERT(body);
+
+			const PhysicWorld* world = body->GetWorld();
+			KGE_ASSERT(world);
+
+			return fixture_->TestPoint(world->Stage2World(p));
+		}
+
 	}
 }

src/kiwano-physics/Fixture.h

@@ -32,10 +32,26 @@ namespace kiwano
 		class PhysicFixture
 		{
 		public:
+			struct Param
+			{
+				float density = 0.f;
+				float friction = 0.2f;
+				float restitution = 0.f;
+				bool is_sensor = false;
+
+				Param() {}
+
+				Param(float density, float friction = 0.2f, float restitution = 0.f, bool is_sensor = false)
+					: density(density)
+					, friction(friction)
+					, restitution(restitution)
+					, is_sensor(is_sensor)
+				{}
+			};
+
 			PhysicFixture();
 			PhysicFixture(b2Fixture* fixture);
-
+			PhysicFixture(PhysicBody* body, PhysicShape* shape, const Param& param);
-			static PhysicFixture Create(PhysicBody* body, PhysicShape* shape, float density = 0.f, float friction = 0.2f, float restitution = 0.f);
 
 			// 物体
 			PhysicBody* GetBody();
@@ -47,6 +63,28 @@ namespace kiwano
 			// 下一夹具 (同一物体上)
 			PhysicFixture GetNext() const;
 
+			// 接触传感器
+			bool IsSensor() const					{ KGE_ASSERT(fixture_); return fixture_->IsSensor(); }
+			void SetSensor(bool sensor)				{ KGE_ASSERT(fixture_); fixture_->SetSensor(sensor); }
+
+			// 质量数据
+			void GetMassData(float* mass, Point* center, float* inertia) const;
+
+			// 密度
+			float GetDensity() const				{ KGE_ASSERT(fixture_); return fixture_->GetDensity(); }
+			void SetDensity(float density)			{ KGE_ASSERT(fixture_); fixture_->SetDensity(density); }
+
+			// 摩擦力
+			float GetFriction() const				{ KGE_ASSERT(fixture_); return fixture_->GetFriction(); }
+			void SetFriction(float friction)		{ KGE_ASSERT(fixture_); fixture_->SetFriction(friction); }
+
+			// 弹性恢复
+			float GetRestitution() const			{ KGE_ASSERT(fixture_); return fixture_->GetRestitution(); }
+			void SetRestitution(float restitution)	{ KGE_ASSERT(fixture_); fixture_->SetRestitution(restitution); }
+
+			// 点测试
+			bool TestPoint(const Point& p) const;
+
 			bool IsValid() const					{ return !!fixture_; }
 
 			b2Fixture* GetB2Fixture()				{ return fixture_; }