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/* $Id$ */

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/** @file squirrel.hpp declarations of the class for squirrel loader */

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#ifndef AI_SQUIRREL_HPP

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#define AI_SQUIRREL_HPP

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#include <map>

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struct ltstr { bool operator()(const char *s1, const char *s2) const { return strcmp(s1, s2) < 0; } };

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class AISquirrel {

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public:

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	AISquirrel();

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	~AISquirrel();

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	/**

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	 * Import a library inside the Squirrel VM.

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	 */

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	/**

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	 * Register a library to be put in the available list.

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	 */

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	void RegisterLibrary(class AILibrary *library);

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	/**

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	 * Register an AI to be put in the available list.

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	 */

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	void RegisterAI(class AIInfo *info);

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	/**

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	 * Remove an AI from the available list.

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	 */

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	void UnregisterAI(class AIInfo *info);

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	/**

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	 * Select a Random AI.

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	 */

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	class AIInfo *SelectRandomAI();

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	/**

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	 * Select an AI by name.

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	 */

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	class AIInfo *SelectAI(const char *name);

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	/**

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	 * Get the list of available AIs for the console.

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	 */

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	char *GetAIConsoleList(char *p, const char *last);

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	/**

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	 * Get the engine of the main squirrel handler (it indexes all avialable squirrels).

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	 */

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	class Squirrel *GetEngine() { return this->engine; }

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	/**

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	 * Get the current script the ScanDir is looking at.

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	 */

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	const char *GetCurrentScript() { return this->current_script; }

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	/**

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	 * Get the directory of the current script the ScanDir is looking at.

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	 */

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	const char *GetCurrentDirName() { return this->current_dir; }

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	/**

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	 * Rescan the AI dir for scripts.

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	 */

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	void RescanAIDir();

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private:

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	typedef std::map<const char *, class AIInfo *, ltstr> AIInfoList;

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	typedef std::map<const char *, class AILibrary *, ltstr> AILibraryList;

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	/**

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	 * Scan the AI dir for scripts.

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	 */

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	void ScanAIDir();

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	/**

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	 * Scan a dir for AIs.

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	 *  For non-library-scan, if an AI is found, AIInfo is created, and the AI

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	 *    is registered to the central system.

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	 *  For library-scan, if a library is found, AILibrary is created, and the

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	 *    library is registered to the central system.

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	 */

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	void ScanDir(const char *dirname, bool library_dir, char *library_depth = NULL);

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	AIInfoList info_list;

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	AILibraryList library_list;

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	class Squirrel *engine;

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	char *current_script;

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	char *current_dir;

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};

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#endif /* AI_SQUIRREL_HPP */