Files @ r17613:a9b2554a5d79
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Location: cpp/openttd-patchpack/source/src/ai/ai.hpp

rubidium
(svn r22387) -Fix-ish [FS#4601]: Windows' recv seems to return "graceful closed" before having passed the remaining buffer which causes OpenTTD to think all connections are "incorrectly" terminated, i.e. without the "I'm leaving" packet from the client. So let the client wait a tiny bit after sending the "I'm leaving" packet and before gracefully closing the connection
/* $Id$ */

/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file ai.hpp Base functions for all AIs. */

#ifndef AI_HPP
#define AI_HPP

#ifdef ENABLE_AI
#include "api/ai_event_types.hpp"
#include "../date_type.h"
#include "../core/string_compare_type.hpp"
#include <map>

/** A list that maps AI names to their AIInfo object. */
typedef std::map<const char *, class AIInfo *, StringCompare> AIInfoList;

/**
 * Main AI class. Contains all functions needed to start, stop, save and load AIs.
 */
class AI {
public:
	/**
	 * The default months AIs start after eachother.
	 */
	enum StartNext {
		START_NEXT_EASY   = DAYS_IN_YEAR * 2,
		START_NEXT_MEDIUM = DAYS_IN_YEAR,
		START_NEXT_HARD   = DAYS_IN_YEAR / 2,
		START_NEXT_MIN    = 1,
		START_NEXT_MAX    = 3600,
		START_NEXT_DEVIATION = 60,
	};

	/**
	 * Is it possible to start a new AI company?
	 * @return True if a new AI company can be started.
	 */
	static bool CanStartNew();

	/**
	 * Start a new AI company.
	 * @param company At which slot the AI company should start.
	 * @param rerandomise_ai Whether to rerandomise the configured AI.
	 */
	static void StartNew(CompanyID company, bool rerandomise_ai = true);

	/**
	 * Called every game-tick to let AIs do something.
	 */
	static void GameLoop();

	/**
	 * Get the current AI tick.
	 */
	static uint GetTick();

	/**
	 * Stop a company to be controlled by an AI.
	 * @param company The company from which the AI needs to detach.
	 * @pre Company::IsValidAiID(company)
	 */
	static void Stop(CompanyID company);

	/**
	 * Suspend an AI for the reminder of the current tick. If the AI is
	 * in a state when it cannot be suspended, it will continue to run
	 * until it can be suspended.
	 * @param company The company for which the AI should be suspended.
	 * @pre Company::IsValidAiID(company)
	 */
	static void Suspend(CompanyID company);

	/**
	 * Kill any and all AIs we manage.
	 */
	static void KillAll();

	/**
	 * Initialize the AI system.
	 */
	static void Initialize();

	/**
	 * Uninitialize the AI system
	 * @param keepConfig Should we keep AIConfigs, or can we free that memory?
	 */
	static void Uninitialize(bool keepConfig);

	/**
	 * Reset all AIConfigs, and make them reload their AIInfo.
	 * If the AIInfo could no longer be found, an error is reported to the user.
	 */
	static void ResetConfig();

	/**
	 * Queue a new event for an AI.
	 */
	static void NewEvent(CompanyID company, AIEvent *event);

	/**
	 * Broadcast a new event to all active AIs.
	 */
	static void BroadcastNewEvent(AIEvent *event, CompanyID skip_company = MAX_COMPANIES);

	/**
	 * Save data from an AI to a savegame.
	 */
	static void Save(CompanyID company);

	/**
	 * Load data for an AI from a savegame.
	 */
	static void Load(CompanyID company, int version);

	/**
	 * Get the number of days before the next AI should start.
	 */
	static int GetStartNextTime();

	/** Wrapper function for AIScanner::GetAIConsoleList */
	static char *GetConsoleList(char *p, const char *last, bool newest_only = false);
	/** Wrapper function for AIScanner::GetAIConsoleLibraryList */
	static char *GetConsoleLibraryList(char *p, const char *last);
	/** Wrapper function for AIScanner::GetAIInfoList */
	static const AIInfoList *GetInfoList();
	/** Wrapper function for AIScanner::GetUniqueAIInfoList */
	static const AIInfoList *GetUniqueInfoList();
	/** Wrapper function for AIScanner::FindInfo */
	static AIInfo *FindInfo(const char *name, int version, bool force_exact_match);
	/** Wrapper function for AIScanner::ImportLibrary */
	static bool ImportLibrary(const char *library, const char *class_name, int version, HSQUIRRELVM vm);

	/**
	 * Rescans all searchpaths for available AIs. If a used AI is no longer
	 * found it is removed from the config.
	 */
	static void Rescan();
#if defined(ENABLE_NETWORK)
	/** Wrapper function for AIScanner::HasAI */
	static bool HasAI(const struct ContentInfo *ci, bool md5sum);
#endif
private:
	static uint frame_counter;          ///< Tick counter for the AI code
	static class AIScanner *ai_scanner; ///< AIScanner instance that is used to find AIs
};

#else /* ENABLE_AI */

#include "../company_type.h"

#define NewEvent(cid, event) nop()
#define BroadcastNewEvent(...) nop()

class AI {
public:
	static void StartNew(CompanyID company, bool rerandomise_ai = true) {}
	static void Stop(CompanyID company) {}
	static void Initialize() {}
	static void Uninitialize(bool keepConfig) {}
	static void KillAll() {}
	static void GameLoop() {}
	static bool HasAI(const struct ContentInfo *ci, bool md5sum) { return false; }
	static void Rescan() {}
	static char *GetConsoleList(char *p, const char *last, bool newest_only = false) { return p; }
	static void nop() { }
};

#endif /* ENABLE_AI */
#endif /* AI_HPP */