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author | Loek Le Blansch <loek@pipeframe.xyz> | 2024-10-10 07:04:27 +0200 |
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committer | Loek Le Blansch <loek@pipeframe.xyz> | 2024-10-10 07:04:27 +0200 |
commit | 29fb4bda4872bdfe33a2416a239fb62fc0238167 (patch) | |
tree | 367f8b32fc843b481b42dff54adfd0939afeb0b7 /mwe/ecs-homemade/inc/ComponentManager.h | |
parent | 08d0b07c19edfe8c81dfe4e21c0d4c1ef128b628 (diff) | |
parent | dcfb674ccdf48a7fd78c98644e5b3b826c399206 (diff) |
merge `loek/scripts` into `master`
Diffstat (limited to 'mwe/ecs-homemade/inc/ComponentManager.h')
-rw-r--r-- | mwe/ecs-homemade/inc/ComponentManager.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/mwe/ecs-homemade/inc/ComponentManager.h b/mwe/ecs-homemade/inc/ComponentManager.h new file mode 100644 index 0000000..d368516 --- /dev/null +++ b/mwe/ecs-homemade/inc/ComponentManager.h @@ -0,0 +1,55 @@ +#pragma once + +#include "Components.h" +#include <cstdint> +#include <memory> +#include <typeindex> +#include <unordered_map> +#include <utility> +#include <vector> + +class ComponentManager { +public: + static ComponentManager & GetInstance(); //Singleton + + ComponentManager(const ComponentManager &) = delete; //Singleton + ComponentManager(ComponentManager &&) = delete; //Singleton + ComponentManager & operator=(const ComponentManager &) = delete; //Singleton + ComponentManager & operator=(ComponentManager &&) = delete; //Singleton + + template <typename T, typename... Args> + void AddComponent(std::uint32_t id, + Args &&... args); //Add a component of a specific type + template <typename T> + void DeleteComponentsById( + std::uint32_t id); //Deletes all components of a specific type and id + template <typename T> + void DeleteComponents(); //Deletes all components of a specific type + void DeleteAllComponentsOfId( + std::uint32_t id); //Deletes all components of a specific id + void DeleteAllComponents(); //Deletes all components + + template <typename T> + std::vector<std::reference_wrapper<T>> GetComponentsByID(std::uint32_t id) + const; //Get a vector<> of all components at specific type and id + template <typename T> + std::vector<std::reference_wrapper<T>> GetComponentsByType() + const; //Get a vector<> of all components of a specific type + +private: + static ComponentManager mInstance; //Singleton + + ComponentManager(); //Singleton + + /* + * The std::unordered_map<std::type_index, std::vector<std::vector<std::unique_ptr<Component>>>> below might seem a bit strange, let me explain this structure: + * The std::unordered_map<> has a key and value. The key is a std::type_index and the value is a std::vector. So, a new std::vector will be created for each new std::type_index. + * The first std::vector<> stores another vector<>. This first vector<> is to bind the entity's id to a component. + * The second std::vector<> stores unique_ptrs. Each component can be gathered via an unique_ptr. This second vector<> allows multiple components of the same std::type_index for one entity (id). + */ + std::unordered_map<std::type_index, + std::vector<std::vector<std::unique_ptr<Component>>>> + mComponents; +}; + +#include "ComponentManager.hpp" |