cocos_lib/cocos/physics/physx/shapes/PhysXShape.cpp

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#include "physics/physx/shapes/PhysXShape.h"
#include "base/std/container/unordered_map.h"
#include "physics/physx/PhysXSharedBody.h"
#include "physics/physx/PhysXUtils.h"
#include "physics/physx/PhysXWorld.h"

namespace cc {
namespace physics {

PhysXShape::PhysXShape() : _mCenter(physx::PxIdentity), _mRotation(physx::PxIdentity) {
    _mObjectID = PhysXWorld::getInstance().addWrapperObject(reinterpret_cast<uintptr_t>(this));
};

void PhysXShape::initialize(Node *node) {
    PhysXWorld &ins = PhysXWorld::getInstance();
    _mSharedBody = ins.getSharedBody(node);
    getSharedBody().reference(true);
    onComponentSet();
    insertToShapeMap();
}

void PhysXShape::onEnable() {
    _mEnabled = true;
    if (_mShape) getSharedBody().addShape(*this);
    getSharedBody().enabled(true);
}

void PhysXShape::onDisable() {
    _mEnabled = false;
    if (_mShape) getSharedBody().removeShape(*this);
    getSharedBody().enabled(false);
}

void PhysXShape::onDestroy() {
    getSharedBody().reference(false);
    eraseFromShapeMap();
    PhysXWorld::getInstance().removeWrapperObject(_mObjectID);
}

void PhysXShape::setMaterial(uint16_t id, float f, float df, float r,
                             uint8_t m0, uint8_t m1) {
    if (!_mShape) return;
    PhysXWorld::getInstance().createMaterial(id, f, df, r, m0, m1);
    auto *mat = reinterpret_cast<physx::PxMaterial *>(PhysXWorld::getInstance().getPXMaterialPtrWithMaterialID(id));
    getShape().setMaterials(&mat, 1);
}

void PhysXShape::setAsTrigger(bool v) {
    if (v) {
        getShape().setFlag(physx::PxShapeFlag::eSIMULATION_SHAPE, !v);
        getShape().setFlag(physx::PxShapeFlag::eTRIGGER_SHAPE, v);
    } else {
        getShape().setFlag(physx::PxShapeFlag::eTRIGGER_SHAPE, v);
        getShape().setFlag(physx::PxShapeFlag::eSIMULATION_SHAPE, !v);
    }
    if (_mEnabled) {
        getSharedBody().removeShape(*this);
        getSharedBody().addShape(*this);
    }
}

void PhysXShape::setCenter(float x, float y, float z) {
    _mCenter = physx::PxVec3{x, y, z};
    updateCenter();
}

uint32_t PhysXShape::getGroup() {
    return getSharedBody().getGroup();
}

void PhysXShape::setGroup(uint32_t g) {
    getSharedBody().setGroup(g);
}

uint32_t PhysXShape::getMask() {
    return getSharedBody().getMask();
}

void PhysXShape::setMask(uint32_t m) {
    getSharedBody().setMask(m);
}

void PhysXShape::updateEventListener(EShapeFilterFlag flag) {
}

geometry::AABB &PhysXShape::getAABB() {
    static IntrusivePtr<geometry::AABB> aabb; // this variable is shared with JS with refcounter
    if (!aabb) {
        aabb = new geometry::AABB;
    }
    if (_mShape) {
        auto bounds = physx::PxShapeExt::getWorldBounds(getShape(), *getSharedBody().getImpl().rigidActor);
        pxSetVec3Ext(aabb->center, (bounds.maximum + bounds.minimum) / 2);
        pxSetVec3Ext(aabb->halfExtents, (bounds.maximum - bounds.minimum) / 2);
    }
    return *aabb;
}

geometry::Sphere &PhysXShape::getBoundingSphere() {
    static IntrusivePtr<geometry::Sphere> sphere; // this variable is shared with JS with refcounter
    if (!sphere) {
        sphere = new geometry::Sphere;
    }
    if (_mShape) sphere->define(getAABB());
    return *sphere;
}

void PhysXShape::updateFilterData(const physx::PxFilterData &data) {
}

void PhysXShape::updateCenter() {
    if (!_mShape) return;
    auto &sb = getSharedBody();
    auto *node = sb.getNode();
    node->updateWorldTransform();
    physx::PxTransform local{_mCenter * node->getWorldScale(), _mRotation};
    getShape().setLocalPose(local);
}

void PhysXShape::insertToShapeMap() {
    if (_mShape) {
        getPxShapeMap().insert(std::pair<uintptr_t, uint32_t>(reinterpret_cast<uintptr_t>(&getShape()), getObjectID()));
    }
}

void PhysXShape::eraseFromShapeMap() {
    if (_mShape) {
        getPxShapeMap().erase(reinterpret_cast<uintptr_t>(&getShape()));
    }
}

} // namespace physics
} // namespace cc