/*
*
*   This program 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; either version 2 of the License, or (at
*   your option) any later version.
*
*   This program 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 this program; if not, write to the Free Software Foundation,
*   Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*
*   In addition, as a special exception, the author gives permission to
*   link the code of this program with the Half-Life Game Engine ("HL
*   Engine") and Modified Game Libraries ("MODs") developed by Valve,
*   L.L.C ("Valve").  You must obey the GNU General Public License in all
*   respects for all of the code used other than the HL Engine and MODs
*   from Valve.  If you modify this file, you may extend this exception
*   to your version of the file, but you are not obligated to do so.  If
*   you do not wish to do so, delete this exception statement from your
*   version.
*
*/

#include "precompiled.h"

cvar_t cv_bot_traceview              = { "bot_traceview", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_stop                   = { "bot_stop", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_show_nav               = { "bot_show_nav", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_show_danger            = { "bot_show_danger", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_nav_edit               = { "bot_nav_edit", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_nav_zdraw              = { "bot_nav_zdraw", "4", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_walk                   = { "bot_walk", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_difficulty             = { "bot_difficulty", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_debug                  = { "bot_debug", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_quicksave              = { "bot_quicksave", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_quota                  = { "bot_quota", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_prefix                 = { "bot_prefix", "", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_allow_rogues           = { "bot_allow_rogues", "1", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_allow_pistols          = { "bot_allow_pistols", "1", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_allow_shotguns         = { "bot_allow_shotguns", "1", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_allow_sub_machine_guns = { "bot_allow_sub_machine_guns", "1", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_allow_rifles           = { "bot_allow_rifles", "1", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_allow_machine_guns     = { "bot_allow_machine_guns", "1", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_allow_grenades         = { "bot_allow_grenades", "1", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_allow_snipers          = { "bot_allow_snipers", "1", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_allow_shield           = { "bot_allow_shield", "1", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_join_team              = { "bot_join_team", "any", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_join_after_player      = { "bot_join_after_player", "1", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_auto_vacate            = { "bot_auto_vacate", "1", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_zombie                 = { "bot_zombie", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_defer_to_human         = { "bot_defer_to_human", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_chatter                = { "bot_chatter", "normal", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_profile_db             = { "bot_profile_db", "BotProfile.db", FCVAR_SERVER, 0.0f, nullptr };

#ifdef REGAMEDLL_ADD
cvar_t cv_bot_deathmatch             = { "bot_deathmatch", "0", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_quota_mode             = { "bot_quota_mode", "normal", FCVAR_SERVER, 0.0f, nullptr };
cvar_t cv_bot_join_delay             = { "bot_join_delay", "0", FCVAR_SERVER, 0.0f, nullptr };
#else
// Migrated to bot_quota_mode, use "match"
cvar_t cv_bot_quota_match            = { "bot_quota_match", "0", FCVAR_SERVER, 0.0f, nullptr };
#endif

void InstallBotControl()
{
	if (TheBots)
	{
		delete TheBots;
	}

	TheBots = new CCSBotManager;
}

// Engine callback for custom server commands
void Bot_ServerCommand()
{
	if (TheBots)
	{
		const char *pcmd = CMD_ARGV(0);
		TheBots->ServerCommand(pcmd);
	}
}

void Bot_RegisterCVars()
{
	if (!AreBotsAllowed())
		return;

	CVAR_REGISTER(&cv_bot_traceview);
	CVAR_REGISTER(&cv_bot_stop);
	CVAR_REGISTER(&cv_bot_show_nav);
	CVAR_REGISTER(&cv_bot_show_danger);
	CVAR_REGISTER(&cv_bot_nav_edit);
	CVAR_REGISTER(&cv_bot_nav_zdraw);
	CVAR_REGISTER(&cv_bot_walk);
	CVAR_REGISTER(&cv_bot_difficulty);
	CVAR_REGISTER(&cv_bot_debug);
	CVAR_REGISTER(&cv_bot_quicksave);
	CVAR_REGISTER(&cv_bot_quota);

#ifndef REGAMEDLL_ADD
	CVAR_REGISTER(&cv_bot_quota_match);
#endif

	CVAR_REGISTER(&cv_bot_prefix);
	CVAR_REGISTER(&cv_bot_allow_rogues);
	CVAR_REGISTER(&cv_bot_allow_pistols);
	CVAR_REGISTER(&cv_bot_allow_shotguns);
	CVAR_REGISTER(&cv_bot_allow_sub_machine_guns);
	CVAR_REGISTER(&cv_bot_allow_rifles);
	CVAR_REGISTER(&cv_bot_allow_machine_guns);
	CVAR_REGISTER(&cv_bot_allow_grenades);
	CVAR_REGISTER(&cv_bot_allow_snipers);
	CVAR_REGISTER(&cv_bot_allow_shield);
	CVAR_REGISTER(&cv_bot_join_team);
	CVAR_REGISTER(&cv_bot_join_after_player);
	CVAR_REGISTER(&cv_bot_auto_vacate);
	CVAR_REGISTER(&cv_bot_zombie);
	CVAR_REGISTER(&cv_bot_defer_to_human);
	CVAR_REGISTER(&cv_bot_chatter);
	CVAR_REGISTER(&cv_bot_profile_db);

#ifdef REGAMEDLL_ADD
	CVAR_REGISTER(&cv_bot_deathmatch);
	CVAR_REGISTER(&cv_bot_quota_mode);
	CVAR_REGISTER(&cv_bot_join_delay);
#endif

}

// Constructor
CCSBot::CCSBot() : m_gameState(this), m_chatter(this)
{
	;
}

// Prepare bot for action
bool CCSBot::Initialize(const BotProfile *profile)
{
	// extend
	CBot::Initialize(profile);

	// CS bot initialization
	m_diedLastRound = false;
	m_morale = POSITIVE;		// starting a new round makes everyone a little happy

	m_combatRange = RANDOM_FLOAT(325, 425);

	m_navNodeList = nullptr;
	m_currentNode = nullptr;

	// set initial safe time guess for this map
	m_safeTime = 15.0f + 5.0f * GetProfile()->GetAggression();

	m_name[0] = '\0';

	ResetValues();
	StartNormalProcess();

	return true;
}

// Reset internal data to initial state
void CCSBot::ResetValues()
{
	m_chatter.Reset();
	m_gameState.Reset();

	m_avoid = nullptr;
	m_avoidTimestamp = 0.0f;

	m_hurryTimer.Invalidate();

	m_isStuck = false;
	m_stuckTimestamp = 0.0f;
	m_wiggleTimestamp = 0.0f;
	m_stuckJumpTimestamp = 0.0f;

	m_pathLength = 0;
	m_pathIndex = 0;
	m_areaEnteredTimestamp = 0.0f;
	m_currentArea = nullptr;
	m_lastKnownArea = nullptr;

	m_avoidFriendTimer.Invalidate();
	m_isFriendInTheWay = false;
	m_isWaitingBehindFriend = false;

	m_disposition = ENGAGE_AND_INVESTIGATE;

	m_enemy = nullptr;

	m_isWaitingToTossGrenade = false;
	m_wasSafe = true;

	m_nearbyEnemyCount = 0;
	m_enemyPlace = 0;
	m_nearbyFriendCount = 0;
	m_closestVisibleFriend = nullptr;
	m_closestVisibleHumanFriend = nullptr;

	for (int w = 0; w < ARRAYSIZE(m_watchInfo); w++)
	{
		m_watchInfo[w].timestamp = 0.0f;
		m_watchInfo[w].isEnemy = false;
	}

	m_isEnemyVisible = false;
	m_visibleEnemyParts = NONE;
	m_lastSawEnemyTimestamp = 0.0f;
	m_firstSawEnemyTimestamp = 0.0f;
	m_currentEnemyAcquireTimestamp = 0.0f;
	m_isLastEnemyDead = true;
	m_attacker = nullptr;
	m_attackedTimestamp = 0.0f;
	m_enemyDeathTimestamp = 0.0f;
	m_lastVictimID = 0;
	m_isAimingAtEnemy = false;
	m_fireWeaponTimestamp = 0.0f;
	m_equipTimer.Invalidate();

	m_isFollowing = false;
	m_leader = nullptr;
	m_followTimestamp = 0.0f;
	m_allowAutoFollowTime = 0.0f;

	m_enemyQueueIndex = 0;
	m_enemyQueueCount = 0;
	m_enemyQueueAttendIndex = 0;
	m_bomber = nullptr;

	m_lookAroundStateTimestamp = 0.0f;
	m_inhibitLookAroundTimestamp = 0.0f;

	m_lookPitch = 0.0f;
	m_lookPitchVel = 0.0f;
	m_lookYaw = 0.0f;
	m_lookYawVel = 0.0f;

	m_aimOffsetTimestamp = 0.0f;
	m_aimSpreadTimestamp = 0.0f;
	m_lookAtSpotState = NOT_LOOKING_AT_SPOT;

	m_spotEncounter = nullptr;
	m_spotCheckTimestamp = 0.0f;
	m_peripheralTimestamp = 0.0f;

	m_avgVelIndex = 0;
	m_avgVelCount = 0;

	m_lastOrigin = pev ? pev->origin : Vector(0, 0, 0);

	m_lastRadioCommand = EVENT_INVALID;
	m_lastRadioRecievedTimestamp = 0.0f;
	m_lastRadioSentTimestamp = 0.0f;
	m_radioSubject = nullptr;
	m_voiceFeedbackEndTimestamp = 0.0f;

	m_hostageEscortCount = 0;
	m_hostageEscortCountTimestamp = 0.0f;

	m_noisePosition = Vector(0, 0, 0);
	m_noiseTimestamp = 0.0f;
	m_noiseCheckTimestamp = 0.0f;
	m_isNoiseTravelRangeChecked = false;

	m_stateTimestamp = 0.0f;
	m_task = SEEK_AND_DESTROY;
	m_taskEntity = nullptr;

	m_approachPointCount = 0;
	m_approachPointViewPosition = Vector(0, 0, 0);

	m_checkedHidingSpotCount = 0;
	m_isJumpCrouching = false;

	StandUp();
	Run();
	m_mustRunTimer.Invalidate();
	m_repathTimer.Invalidate();
	m_pathLadder = nullptr;

	m_huntState.ClearHuntArea();

	// adjust morale - if we died, our morale decreased,
	// but if we live, no adjustement (round win/loss also adjusts morale
	if (m_diedLastRound)
		DecreaseMorale();

	m_diedLastRound = false;

	// IsRogue() randomly changes this
	m_isRogue = false;

	m_surpriseDelay = 0.0f;
	m_surpriseTimestamp = 0.0f;

	// even though these are EHANDLEs, they need to be NULL-ed
	m_goalEntity = nullptr;
	m_avoid = nullptr;
	m_enemy = nullptr;

#ifdef REGAMEDLL_FIXES
	for (int i = 0; i < MAX_ENEMY_QUEUE; i++)
	{
		m_enemyQueue[i].player = nullptr;
		m_enemyQueue[i].isReloading = false;
		m_enemyQueue[i].isProtectedByShield = false;
	}
#endif

	// start in idle state
	StopAttacking();
	Idle();
}

// Called when bot is placed in map, and when bots are reset after a round ends.
// NOTE: For some reason, this can be called twice when a bot is added.
void CCSBot::SpawnBot()
{
	TheCSBots()->ValidateMapData();
	ResetValues();

	Q_strcpy(m_name, STRING(pev->netname));

	SetState(&m_buyState);
	SetTouch(&CCSBot::BotTouch);

	if (TheNavAreaList.empty() && !TheCSBots()->IsLearningMap())
	{
		TheCSBots()->SetLearningMapFlag();
		StartLearnProcess();
	}
}

void CCSBot::RoundRespawn()
{
	// do the normal player spawn process
	CBasePlayer::RoundRespawn();
	EndVoiceFeedback();
}

void CCSBot::Disconnect()
{
	EndVoiceFeedback();

	if (m_processMode != PROCESS_NORMAL)
	{
		hideProgressMeter();
	}
}