50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
#pragma once
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#include <entt/entt.hpp>
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#include "BVH.h"
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#include "Containers/Map.h"
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#include "Containers/Array.h"
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#include "Component/Collider.h"
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#include "Component/Transform.h"
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namespace Seele
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{
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struct Collision
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{
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entt::entity a, b;
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};
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class CollisionSystem
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{
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public:
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CollisionSystem(entt::registry& registry);
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virtual ~CollisionSystem();
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void detectCollisions(Array<Collision>& collisions);
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private:
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struct Witness
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{
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Vector p;
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Vector n;
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// for finding p
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uint32_t point1Index;
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// and the face where the plane lies on
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uint32_t point2Index;
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uint32_t point3Index;
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uint32_t point4Index = UINT32_MAX;
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entt::entity source;
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entt::entity other;
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};
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BVH bvh;
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entt::registry& registry;
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Map<Pair<entt::entity, entt::entity>, Witness> cachedWitness;
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bool checkCollision(Pair<entt::entity, entt::entity> pair);
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void updateWitness(Witness& witness, const Vector& point, const Vector& v1, const Vector& v2);
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// returns true if a collision was found
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bool createWitness(Witness& witness, const Component::ShapeBase& source, const Component::ShapeBase& other);
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// returns true if a collision was found
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bool witnessValid(const Witness& witness, const Component::ShapeBase& shape1, const Component::ShapeBase& shape2);
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};
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} // namespace Seele
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