45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
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#pragma once
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#include <string>
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namespace SE {
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// Forward declaration.
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class EntityComponent;
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/**
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* A System is a routine that operates over the Components in an Entity.
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* A System may be local to a given Entity, or it may be glboal to the Scene.
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*
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* Components must be registered to the System that works over them.
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*
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* TODO: Think of better names for these functions
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*/
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class EntitySystem {
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public:
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virtual ~EntitySystem();
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virtual std::string& GetName() const = 0;
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// Pre-Component Register
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virtual void Initialize() {}
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// Post-Component Register
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virtual void Initialized() {}
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// Pre-Component Unregister
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virtual void Uninitialize() {}
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// Post-Component Unregister
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virtual void Uninitialized() {}
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protected:
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// Register a Component with this System
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virtual void RegisterComponent(EntityComponent* component) = 0;
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// Unregister a Component from this system
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virtual void UnregisterComponent(EntityComponent* component) = 0;
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// Update over all Components. TODO: Context?
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virtual void Update() = 0;
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};
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}
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