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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef AI_INTERFACE_LIBRARY_H
#define AI_INTERFACE_LIBRARY_H
#include "System/Platform/SharedLib.h"
#include "ExternalAI/Interface/ELevelOfSupport.h"
#include "ExternalAI/Interface/SAIInterfaceLibrary.h"
#include "ExternalAI/Interface/SAIInterfaceCallback.h"
#include "ExternalAI/SkirmishAIKey.h"
#include <string>
#include <map>
class CAIInterfaceLibraryInfo;
class CSkirmishAILibrary;
class CSkirmishAILibraryInfo;
struct SSkirmishAILibrary;
/**
* The engines container for an AI Interface library.
* An instance of this class may represent the Java or the C AI Interface.
*/
class CAIInterfaceLibrary {
public:
CAIInterfaceLibrary(const CAIInterfaceLibraryInfo& info);
~CAIInterfaceLibrary();
AIInterfaceKey GetKey() const;
LevelOfSupport GetLevelOfSupportFor(
const std::string& engineVersionString, int engineVersionNumber) const;
int GetSkirmishAICount() const;
std::map<std::string, std::string> GetSkirmishAIInfos(int aiIndex) const;
std::string GetSkirmishAIOptions(int aiIndex) const;
/**
* @brief how many times is this interface loaded
* Thought the AI library may be loaded only once, it can be logically
* loaded multiple times.
* Example: If we load one RAI and two AAIs over this interface,
* the interface load counter will be three.
*/
int GetLoadCount() const;
// Skirmish AI methods
/**
* @brief loads the AI library
* This only loads the AI library, and does not yet create an instance
* for a team.
* For the C and C++ AI interface eg, this will load a shared library.
* Increments the load counter.
*/
const CSkirmishAILibrary* FetchSkirmishAILibrary(const CSkirmishAILibraryInfo& aiInfo);
/**
* @brief unloads the Skirmish AI library
* This unloads the Skirmish AI library.
* For the C and C++ AI interface eg, this will unload a shared library.
* This should not be done when any instances
* of that AI are still in use, as it will result in a crash.
* Decrements the load counter.
*/
int ReleaseSkirmishAILibrary(const SkirmishAIKey& sAISpecifier);
/**
* @brief how many times is the Skirmish AI loaded
* Thought the AI library may be loaded only once, it can be logically
* loaded multiple times (load counter).
*/
int GetSkirmishAILibraryLoadCount(const SkirmishAIKey& sAISpecifier) const;
/**
* @brief is the Skirmish AI library loaded
*/
bool IsSkirmishAILibraryLoaded(const SkirmishAIKey& key) const;
/**
* @brief unloads all AIs
* Unloads all AI libraries currently loaded through this interface.
*/
int ReleaseAllSkirmishAILibraries();
/**
* @brief path to the library file
* Returns the path to the shared library file wrapped by this class.
*/
const std::string& GetLibraryFilePath() const;
/**
* @brief whether this interface is successfully initialized
*/
const bool IsInitialized() const;
private:
void InitStatic();
void ReleaseStatic();
static void reportInterfaceFunctionError(const std::string* libFileName,
const std::string* functionName);
int InitializeFromLib(const std::string& libFilePath);
std::string FindLibFile();
struct SSkirmishAILibrary* NewEmptyInterfaceLib();
int interfaceId;
struct SAIInterfaceCallback callback;
bool initialized;
std::string libFilePath;
SharedLib* sharedLib;
SAIInterfaceLibrary sAIInterfaceLibrary;
const CAIInterfaceLibraryInfo& info;
std::map<const SkirmishAIKey, CSkirmishAILibrary*> loadedSkirmishAILibraries;
std::map<const SkirmishAIKey, int> skirmishAILoadCount;
static const int MAX_INFOS = 128;
};
#endif // AI_INTERFACE_LIBRARY_H
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