47 lines
1.8 KiB
C++
47 lines
1.8 KiB
C++
// Copyright (C) 2019 Jérôme Leclercq
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// This file is part of the "Nazara Development Kit"
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// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
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#include <NDK/Components/ConstraintComponent2D.hpp>
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#include <NDK/Components/PhysicsComponent2D.hpp>
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#include <NDK/Components/CollisionComponent2D.hpp>
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namespace Ndk
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{
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template<typename T, typename ...Args>
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T* ConstraintComponent2D::CreateConstraint(const Ndk::EntityHandle& first, const Ndk::EntityHandle& second, Args&& ...args)
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{
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auto FetchBody = [](const Ndk::EntityHandle& entity) -> Nz::RigidBody2D*
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{
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if (entity->HasComponent<Ndk::PhysicsComponent2D>())
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return entity->GetComponent<Ndk::PhysicsComponent2D>().GetRigidBody();
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else if (entity->HasComponent<Ndk::CollisionComponent2D>())
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return entity->GetComponent<Ndk::CollisionComponent2D>().GetStaticBody();
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return nullptr;
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};
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Nz::RigidBody2D* firstBody = FetchBody(first);
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NazaraAssert(firstBody, "First entity has no CollisionComponent2D nor PhysicsComponent2D component");
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Nz::RigidBody2D* secondBody = FetchBody(second);
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NazaraAssert(secondBody, "Second entity has no CollisionComponent2D nor PhysicsComponent2D component");
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m_constraints.emplace_back();
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auto& constraintData = m_constraints.back();
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constraintData.constraint = std::make_unique<T>(*firstBody, *secondBody, std::forward<Args>(args)...);
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constraintData.onBodyADestruction.Connect(first->OnEntityDestruction, [this, constraint = constraintData.constraint.get()](const Ndk::Entity* /*entity*/)
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{
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RemoveConstraint(constraint);
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});
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constraintData.onBodyBDestruction.Connect(second->OnEntityDestruction, [this, constraint = constraintData.constraint.get()](const Ndk::Entity* /*entity*/)
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{
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RemoveConstraint(constraint);
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});
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return static_cast<T*>(constraintData.constraint.get());
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}
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}
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