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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef SIMOBJECT_IDPOOL_H
#define SIMOBJECT_IDPOOL_H
#include "System/creg/creg_cond.h"
#include "System/UnorderedMap.hpp"
class CSolidObject;
class SimObjectIDPool {
CR_DECLARE_STRUCT(SimObjectIDPool)
public:
SimObjectIDPool() {} // FIXME: creg, needs PostLoad
SimObjectIDPool(unsigned int maxObjects) {
// pools are reused as part of object handlers, internal table sizes must be
// constant at runtime to prevent desyncs between fresh and reloaded clients
// (both must execute Expand since it touches the RNG)
poolIDs.reserve(maxObjects);
freeIDs.reserve(maxObjects);
tempIDs.reserve(maxObjects);
}
void Expand(unsigned int baseID, unsigned int numIDs);
void Clear() {
freeIDs.clear();
poolIDs.clear();
tempIDs.clear();
}
void AssignID(CSolidObject* object);
void FreeID(unsigned int uid, bool delayed);
bool RecycleID(unsigned int uid);
bool HasID(unsigned int uid) const;
bool IsEmpty() const { return (freeIDs.empty()); }
unsigned int GetSize() const { return (freeIDs.size()); } // number of ID's still unused
unsigned int MaxSize() const { return (poolIDs.size()); } // number of ID's this pool owns
private:
unsigned int ExtractID();
void ReserveID(unsigned int uid);
void RecycleIDs();
private:
spring::unordered_map<unsigned int, unsigned int> poolIDs; // uid to idx
spring::unordered_map<unsigned int, unsigned int> freeIDs; // idx to uid
spring::unordered_map<unsigned int, unsigned int> tempIDs; // idx to uid
};
#endif
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