Body.h

// Copyright (c) 2018-2019 Kiwano - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
 
#pragma once
#include <kiwano-physics/Global.h>
 
#define KGE_COMP_PHYSIC_BODY "__KGE_PHYSIC_BODY__"
 
namespace kiwano
{
namespace physics
{
 
class World;
 
class KGE_API Body : public Component
{
    friend class World;
 
public:
    Body(b2Body* body, b2World* world = nullptr);
 
    virtual ~Body();
 
    b2Body* GetB2Body() const;
 
    Point GetLocalPoint(const Point& world) const;
 
    Vec2 GetLocalVector(const Vec2& world) const;
 
    Point GetWorldPoint(const Point& local) const;
 
    Vec2 GetWorldVector(const Vec2& local) const;
 
protected:
    void InitComponent(Actor* actor) override;
 
    void DestroyComponent() override;
 
    void UpdateFromActor(Actor* actor);
 
    void UpdateFromActor(Actor* actor, const Matrix3x2& actor_to_world, float parent_rotation);
 
    void BeforeSimulation(Actor* actor, const Matrix3x2& parent_to_world, const Matrix3x2& actor_to_world,
                          float parent_rotation);
 
    void AfterSimulation(Actor* actorconst, const Matrix3x2& parent_to_world, float parent_rotation);
 
private:
    b2World* b2world_;
    b2Body*  b2body_;
 
    // Point offset_;
    Point position_cached_;
};
 
inline b2Body* Body::GetB2Body() const
{
    return b2body_;
}
 
}  // namespace physics
}  // namespace kiwano