ShapeFilter.h

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// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
// SPDX-License-Identifier: MIT
 
#pragma once
 
#include <Jolt/Physics/Body/BodyID.h>
#include <Jolt/Core/NonCopyable.h>
 
JPH_NAMESPACE_BEGIN
 
class Shape;
class SubShapeID;
 
class ShapeFilter : public NonCopyable
{
public:
    virtual                 ~ShapeFilter() = default;
 
    virtual bool            ShouldCollide([[maybe_unused]] const Shape *inShape2, [[maybe_unused]] const SubShapeID &inSubShapeIDOfShape2) const
    {
        return true;
    }
 
    virtual bool            ShouldCollide([[maybe_unused]] const Shape *inShape1, [[maybe_unused]] const SubShapeID &inSubShapeIDOfShape1, [[maybe_unused]] const Shape *inShape2, [[maybe_unused]] const SubShapeID &inSubShapeIDOfShape2) const
    {
        return true;
    }
 
    mutable BodyID          mBodyID2;
};
 
class ReversedShapeFilter : public ShapeFilter
{
public:
    explicit                ReversedShapeFilter(const ShapeFilter &inFilter) : mFilter(inFilter)
    {
        mBodyID2 = inFilter.mBodyID2;
    }
 
    virtual bool            ShouldCollide(const Shape *inShape2, const SubShapeID &inSubShapeIDOfShape2) const override
    {
        return mFilter.ShouldCollide(inShape2, inSubShapeIDOfShape2);
    }
 
    virtual bool            ShouldCollide(const Shape *inShape1, const SubShapeID &inSubShapeIDOfShape1, const Shape *inShape2, const SubShapeID &inSubShapeIDOfShape2) const override
    {
        return mFilter.ShouldCollide(inShape2, inSubShapeIDOfShape2, inShape1, inSubShapeIDOfShape1);
    }
 
private:
    const ShapeFilter &     mFilter;
};
 
JPH_NAMESPACE_END