AtomicGameEngine/Source/Atomic/Atomic2D/ConstraintFriction2D.h

//
// Copyright (c) 2008-2017 the Urho3D project.
//
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// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
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// 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.
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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//

#pragma once

#include "../Atomic2D/Constraint2D.h"

namespace Atomic
{

/// 2D friction constraint component.
class ATOMIC_API ConstraintFriction2D : public Constraint2D
{
    ATOMIC_OBJECT(ConstraintFriction2D, Constraint2D);

public:
    /// Construct.
    ConstraintFriction2D(Context* context);
    /// Destruct.
    virtual ~ConstraintFriction2D();
    /// Register object factory.
    static void RegisterObject(Context* context);

    /// Set anchor.
    void SetAnchor(const Vector2& anchor);
    /// Set max force.
    void SetMaxForce(float maxForce);
    /// Set max torque.
    void SetMaxTorque(float maxTorque);

    /// Return anchor.
    const Vector2& GetAnchor() const { return anchor_; }

    /// Set max force.
    float GetMaxForce() const { return jointDef_.maxForce; }

    /// Set max torque.
    float GetMaxTorque() const { return jointDef_.maxTorque; }

private:
    /// Return joint def.
    virtual b2JointDef* GetJointDef();

    /// Box2D joint def.
    b2FrictionJointDef jointDef_;
    /// Anchor.
    Vector2 anchor_;
};

}