forked from 0ad/0ad
57 lines
2.1 KiB
C++
Executable File
57 lines
2.1 KiB
C++
Executable File
// EntityManager.h
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//
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// Last modified: 22 May 04, Mark Thompson mot20@cam.ac.uk / mark@wildfiregames.com
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//
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// Maintains entity id->object mappings. Does most of the work involved in creating an entity.
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//
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// Usage: Do not attempt to directly instantiate an entity class.
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// HEntity bob = g_EntityManager.create( unit_class_name, position, orientation );
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// or HEntity jim = g_EntityManager.create( pointer_to_unit_class, position, orientation );
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//
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// Perform updates on all world entities by g_EntityManager.updateAll( timestep )
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// Dispatch an identical message to all world entities by g_EntityManager.dispatchAll( message_pointer )
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// Get an STL vector container of all entities with a certain property with g_EntityManager.matches( predicate )
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// or just get all entities with g_EntityManager.getActive().
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//
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// Those last two functions - caller has responsibility for deleting the collection when you're done with it.
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#ifndef ENTITY_MANAGER_INCLUDED
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#define ENTITY_MANAGER_INCLUDED
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#include "Singleton.h"
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#include "Entity.h"
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#include "EntityHandles.h"
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#include "EntityMessage.h"
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#define MAX_HANDLES 4096
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#define g_EntityManager CEntityManager::GetSingleton()
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class CEntityManager : public Singleton<CEntityManager>
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{
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friend HEntity;
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friend CHandle;
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CHandle m_entities[MAX_HANDLES];
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std::vector<HEntity> m_reaper;
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int m_nextalloc;
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static bool m_extant;
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void destroy( u16 handle );
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public:
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typedef bool (*EntityPredicate)( CEntity* target );
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CEntityManager();
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~CEntityManager();
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HEntity create( CBaseEntity* base, CVector3D position, float orientation );
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HEntity create( CStr templatename, CVector3D position, float orientation );
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void kill( HEntity ent );
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void updateAll( float timestep );
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void dispatchAll( CMessage* msg );
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void renderAll(); // TODO MT: What's the correct way to hook this up to the renderer?
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std::vector<HEntity>* matches( EntityPredicate predicate );
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std::vector<HEntity>* getActive();
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static inline bool extant() // True if the singleton is actively maintaining handles. When false, system is shutting down, handles are quietly dumped.
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{
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return( m_extant );
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}
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};
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#endif |