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61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
#ifndef ENGINE_INCLUDE_SYSTEMS_COLLISIONS_H_
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#define ENGINE_INCLUDE_SYSTEMS_COLLISIONS_H_
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#include <cstdint>
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#include <glm/mat4x4.hpp>
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#include <vector>
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#include "components/collider.h"
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#include "ecs_system.h"
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namespace engine {
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class PhysicsSystem : public System {
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public:
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PhysicsSystem(Scene* scene);
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void OnUpdate(float ts) override;
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void OnComponentInsert(uint32_t entity) override;
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struct CollisionEvent {
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bool is_collision_enter; // false == collision exit
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uint32_t collided_entity; // the entity that this entity collided with
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glm::vec3 normal; // the normal of the surface this entity collided with;
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// ignored on collision exit
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glm::vec3 point; // where the collision was detected
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};
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private:
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// dynamic arrays to avoid realloc on every frame
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// entity, aabb, is_trigger
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std::vector<std::tuple<uint32_t, AABB, bool>> static_aabbs_{};
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std::vector<std::tuple<uint32_t, AABB, bool>> dynamic_aabbs_{};
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struct PossibleCollision {
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PossibleCollision(uint32_t static_entity, AABB static_aabb,
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bool static_trigger, uint32_t dynamic_entity,
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AABB dynamic_aabb, bool dynamic_trigger)
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: static_entity(static_entity),
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static_aabb(static_aabb),
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static_trigger(static_trigger),
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dynamic_entity(dynamic_entity),
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dynamic_aabb(dynamic_aabb),
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dynamic_trigger(dynamic_trigger) {}
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uint32_t static_entity;
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AABB static_aabb;
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bool static_trigger;
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uint32_t dynamic_entity;
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AABB dynamic_aabb;
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bool dynamic_trigger;
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};
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std::vector<PossibleCollision> possible_collisions_{};
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std::vector<std::pair<uint32_t, CollisionEvent>>
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collision_infos_{}; // target entity, event info
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};
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} // namespace engine
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#endif |