source/Tactical/Merc Hiring.cpp

#ifdef PRECOMPILEDHEADERS
	#include "Tactical All.h"
	#include "strategic.h"
#else
	#include "builddefines.h"
	#include <stdio.h>
	#include <string.h>
	#include "wcheck.h"
	#include "stdlib.h"
	#include "debug.h"
	#include "math.h"
	#include "worlddef.h"
	#include "worldman.h"
	#include "renderworld.h"
	#include "Assignments.h"
	#include "Soldier Control.h"
	#include "Animation Control.h"
	#include "Animation Data.h"
	#include "Isometric Utils.h"
	#include "Event Pump.h"
	#include "Timer Control.h"
	#include "Render Fun.h" 
	#include "Render Dirty.h"
	#include "mousesystem.h"
	#include "interface.h"
	#include "sysutil.h"
	#include "FileMan.h"
	#include "points.h"
	#include "Random.h"
	#include "ai.h"
	#include "Interactive Tiles.h"
	#include "soldier ani.h"
	#include "english.h"
	#include "overhead.h"
	#include "Soldier Profile.h"
	#include "Game Clock.h"
	#include "soldier create.h"
	#include "Merc Hiring.h"
	#include "Game Event Hook.h"
	#include "message.h"
	#include "strategicmap.h"
	#include "strategic.h"
	#include "items.h"
	#include "Soldier Add.h"
	#include "History.h"
	#include "Squads.h"
	#include "Strategic Merc Handler.h"
	#include "Dialogue Control.h"
	#include "Map Screen Interface.h"
	#include "Map Screen Interface Map.h"
	#include "screenids.h"
	#include "jascreens.h"
	#include "text.h"
	#include "Merc Contract.h"
	#include "LaptopSave.h"
	#include "personnel.h"
	#include "Auto Resolve.h"
	#include "Map Screen Interface Bottom.h"
	#include "Quests.h"
	#include "GameSettings.h"
#endif

#define	MIN_FLIGHT_PREP_TIME	6

#ifdef JA2TESTVERSION
	BOOLEAN	gForceHireMerc=FALSE;
	void SetFlagToForceHireMerc( BOOLEAN fForceHire );
#endif

extern BOOLEAN		gfTacticalDoHeliRun;
extern BOOLEAN		gfFirstHeliRun;

// ATE: Globals that dictate where the mercs will land once being hired
// Default to Omerta
// Saved in general saved game structure
INT16	gsMercArriveSectorX = 9;
INT16	gsMercArriveSectorY = 1;

void CheckForValidArrivalSector( );


INT8 HireMerc( MERC_HIRE_STRUCT *pHireMerc)
{
	SOLDIERTYPE	*pSoldier;
	UINT8		iNewIndex;
	UINT8		ubCount=0;
	UINT8		ubCurrentSoldier = pHireMerc->ubProfileID;
	MERCPROFILESTRUCT				*pMerc;
	SOLDIERCREATE_STRUCT		MercCreateStruct;
	BOOLEAN fReturn = FALSE;
	pMerc = &gMercProfiles[ ubCurrentSoldier ];

	//If we are to disregard the ststus of the merc
	#ifdef JA2TESTVERSION
		if( !gForceHireMerc )
	#endif
	//If the merc is away, Dont hire him, or if the merc is only slightly annoyed at the player
	if( ( pMerc->bMercStatus != 0 ) && (pMerc->bMercStatus != MERC_ANNOYED_BUT_CAN_STILL_CONTACT ) && ( pMerc->bMercStatus != MERC_HIRED_BUT_NOT_ARRIVED_YET ) )
		return( MERC_HIRE_FAILED );

	if( NumberOfMercsOnPlayerTeam() >= 18 )
		return( MERC_HIRE_OVER_18_MERCS_HIRED );

	// ATE: if we are to use landing zone, update to latest value
	// they will be updated again just before arrival...
	if ( pHireMerc->fUseLandingZoneForArrival )
	{
		pHireMerc->sSectorX	= gsMercArriveSectorX;
		pHireMerc->sSectorY	= gsMercArriveSectorY;
		pHireMerc->bSectorZ	= 0;
	}

	// BUILD STRUCTURES
	memset( &MercCreateStruct, 0, sizeof( MercCreateStruct ) );
	MercCreateStruct.ubProfile						= ubCurrentSoldier;
	MercCreateStruct.fPlayerMerc					= TRUE;
	MercCreateStruct.sSectorX							= pHireMerc->sSectorX;
	MercCreateStruct.sSectorY							= pHireMerc->sSectorY;
	MercCreateStruct.bSectorZ							= pHireMerc->bSectorZ;
	MercCreateStruct.bTeam								= SOLDIER_CREATE_AUTO_TEAM;
	MercCreateStruct.fCopyProfileItemsOver= pHireMerc->fCopyProfileItemsOver;

	if ( !TacticalCreateSoldier( &MercCreateStruct, &iNewIndex ) )
	{
		DebugMsg( TOPIC_JA2, DBG_LEVEL_3, "TacticalCreateSoldier in HireMerc():  Failed to Add Merc");
		return( MERC_HIRE_FAILED );
	}

	if( DidGameJustStart() )
	{
		// OK, CHECK FOR FIRST GUY, GIVE HIM SPECIAL ITEM!
		if ( iNewIndex == 0 )
		{
			// OK, give this item to our merc!
			OBJECTTYPE Object;
		
			// make an objecttype
			memset( &Object, 0, sizeof( OBJECTTYPE ) );
			Object.usItem						= LETTER;
			Object.ubNumberOfObjects = 1;
			Object.bStatus[0]				= 100;
			// Give it 
			fReturn = AutoPlaceObject( MercPtrs[iNewIndex], &Object, FALSE );
			Assert( fReturn );
		}

		// Set insertion for first time in chopper

		// ATE: Insert for demo , not using the heli sequence....
		pHireMerc->ubInsertionCode				= INSERTION_CODE_CHOPPER;
	}


	//record how long the merc will be gone for
	pMerc->bMercStatus = (UINT8)pHireMerc->iTotalContractLength;

	pSoldier = &Menptr[iNewIndex];

	//Copy over insertion data....
	pSoldier->ubStrategicInsertionCode = pHireMerc->ubInsertionCode;
	pSoldier->usStrategicInsertionData = pHireMerc->usInsertionData;
	// ATE: Copy over value for using alnding zone to soldier type
	pSoldier->fUseLandingZoneForArrival = pHireMerc->fUseLandingZoneForArrival;


	// Set assignment
	//ATE: If first time, make ON_DUTY, otherwise GUARD
	if( ( pSoldier->bAssignment != IN_TRANSIT ) )
	{
		SetTimeOfAssignmentChangeForMerc( pSoldier );
	}
	ChangeSoldiersAssignment( pSoldier, IN_TRANSIT );

	//set the contract length
	pSoldier->iTotalContractLength = pHireMerc->iTotalContractLength;

	//reset the insurance values
	pSoldier->iStartOfInsuranceContract = 0;
	pSoldier->iTotalLengthOfInsuranceContract = 0;

	//Init the contract charge
//	pSoldier->iTotalContractCharge = 0;

	// store arrival time in soldier structure so map screen can display it
	pSoldier->uiTimeSoldierWillArrive = pHireMerc->uiTimeTillMercArrives;


	//Set the type of merc

	if( DidGameJustStart() )
	{
		// Set time of initial merc arrival in minutes
		pHireMerc->uiTimeTillMercArrives = ( gGameExternalOptions.iGameStartingTime + gGameExternalOptions.iFirstArrivalDelay ) / NUM_SEC_IN_MIN;

		// Set insertion for first time in chopper
		pHireMerc->ubInsertionCode				= INSERTION_CODE_CHOPPER;

		//set when the merc's contract is finished
		pSoldier->iEndofContractTime = GetMidnightOfFutureDayInMinutes( pSoldier->iTotalContractLength ) + ( GetHourWhenContractDone( pSoldier ) * 60 );
	}
	else
	{
		//set when the merc's contract is finished ( + 1 cause it takes a day for the merc to arrive )
		pSoldier->iEndofContractTime = GetMidnightOfFutureDayInMinutes( 1 + pSoldier->iTotalContractLength ) + ( GetHourWhenContractDone( pSoldier ) * 60 );
	}

	//Set the time and ID of the last hired merc will arrive
	LaptopSaveInfo.sLastHiredMerc.iIdOfMerc = pHireMerc->ubProfileID;
	LaptopSaveInfo.sLastHiredMerc.uiArrivalTime = pHireMerc->uiTimeTillMercArrives;


	//if we are trying to hire a merc that should arrive later, put the merc in the queue
	if( pHireMerc->uiTimeTillMercArrives  != 0 )
	{
		AddStrategicEvent( EVENT_DELAYED_HIRING_OF_MERC, pHireMerc->uiTimeTillMercArrives,  pSoldier->ubID );

		//specify that the merc is hired but hasnt arrived yet
		pMerc->bMercStatus = MERC_HIRED_BUT_NOT_ARRIVED_YET;

	}


	//if the merc is an AIM merc
	if( ubCurrentSoldier < 40 )
	{

		pSoldier->ubWhatKindOfMercAmI = MERC_TYPE__AIM_MERC;
		//determine how much the contract is, and remember what type of contract he got
		if( pHireMerc->iTotalContractLength == 1 )
		{
			//pSoldier->iTotalContractCharge = gMercProfiles[ pSoldier->ubProfile ].sSalary;
			pSoldier->bTypeOfLastContract = CONTRACT_EXTEND_1_DAY;
      pSoldier->iTimeCanSignElsewhere = GetWorldTotalMin();
		}
		else if( pHireMerc->iTotalContractLength == 7 )
		{
			//pSoldier->iTotalContractCharge = gMercProfiles[ pSoldier->ubProfile ].uiWeeklySalary;
			pSoldier->bTypeOfLastContract = CONTRACT_EXTEND_1_WEEK;
      pSoldier->iTimeCanSignElsewhere = GetWorldTotalMin();
		}
		else if( pHireMerc->iTotalContractLength == 14 )
		{
			//pSoldier->iTotalContractCharge = gMercProfiles[ pSoldier->ubProfile ].uiBiWeeklySalary;
			pSoldier->bTypeOfLastContract = CONTRACT_EXTEND_2_WEEK;
      // These luck fellows need to stay the whole duration!
      pSoldier->iTimeCanSignElsewhere = pSoldier->iEndofContractTime;
		}

		// remember the medical deposit we PAID.  The one in his profile can increase when he levels!
		pSoldier->usMedicalDeposit = gMercProfiles[ pSoldier->ubProfile ].sMedicalDepositAmount;
	}
	//if the merc is from M.E.R.C.
	else if( ( ubCurrentSoldier >= BIFF && ubCurrentSoldier <= BUBBA ) || ubCurrentSoldier >= GASTON ) 
	{
		pSoldier->ubWhatKindOfMercAmI = MERC_TYPE__MERC;
		//pSoldier->iTotalContractCharge = -1;

		gMercProfiles[ pSoldier->ubProfile ].iMercMercContractLength = 1;

		//Set starting conditions for the merc
		pSoldier->iStartContractTime = GetWorldDay( );

		AddHistoryToPlayersLog(HISTORY_HIRED_MERC_FROM_MERC, ubCurrentSoldier, GetWorldTotalMin(), -1, -1 );
	}
	//If the merc is from IMP, (ie a player character)
	else if( ( ubCurrentSoldier >= 51 ) && ( ubCurrentSoldier < 57 ) ) 
	{
		pSoldier->ubWhatKindOfMercAmI = MERC_TYPE__PLAYER_CHARACTER;
		//pSoldier->iTotalContractCharge = -1;
	}
	//else its a NPC merc
	else
	{
		pSoldier->ubWhatKindOfMercAmI = MERC_TYPE__NPC;
		//pSoldier->iTotalContractCharge = -1;
	}

	//remove the merc from the Personnel screens departed list ( if they have never been hired before, its ok to call it )
	RemoveNewlyHiredMercFromPersonnelDepartedList( pSoldier->ubProfile );

	gfAtLeastOneMercWasHired = TRUE;
	return( MERC_HIRE_OK );
}


void MercArrivesCallback(	UINT8	ubSoldierID )
{
	MERCPROFILESTRUCT				*pMerc;
	SOLDIERTYPE							*pSoldier;
	UINT32									uiTimeOfPost;

	if( !DidGameJustStart() && gsMercArriveSectorX == 9 && gsMercArriveSectorY == 1 )
	{ //Mercs arriving in A9.  This sector has been deemed as the always safe sector.
		//Seeing we don't support entry into a hostile sector (except for the beginning),
		//we will nuke any enemies in this sector first.
		if( gWorldSectorX != 9 || gWorldSectorY != 1 || gbWorldSectorZ )
		{
			EliminateAllEnemies( (UINT8)gsMercArriveSectorX, (UINT8)gsMercArriveSectorY );
		}
	}

	// This will update ANY soldiers currently schedules to arrive too
	CheckForValidArrivalSector( );

	// stop time compression until player restarts it
	StopTimeCompression();

	pSoldier = &Menptr[ ubSoldierID ];

	pMerc = &gMercProfiles[ pSoldier->ubProfile ];

	// add the guy to a squad
	AddCharacterToAnySquad( pSoldier );

	// ATE: Make sure we use global.....
	if ( pSoldier->fUseLandingZoneForArrival )
	{
		pSoldier->sSectorX	= gsMercArriveSectorX;
		pSoldier->sSectorY	= gsMercArriveSectorY;
		pSoldier->bSectorZ	= 0;
	}

	// Add merc to sector ( if it's the current one )
	if ( gWorldSectorX == pSoldier->sSectorX && gWorldSectorY == pSoldier->sSectorY && pSoldier->bSectorZ == gbWorldSectorZ )
	{
		// OK, If this sector is currently loaded, and guy does not have CHOPPER insertion code....
		// ( which means we are at beginning of game if so ) 
		// Setup chopper....
		if ( pSoldier->ubStrategicInsertionCode != INSERTION_CODE_CHOPPER && pSoldier->sSectorX == 9 && pSoldier->sSectorY == 1 )
		{
			gfTacticalDoHeliRun = TRUE;

			// OK, If we are in mapscreen, get out...
			if ( guiCurrentScreen == MAP_SCREEN )
			{
        // ATE: Make sure the current one is selected!
				ChangeSelectedMapSector( gWorldSectorX, gWorldSectorY, 0 );

				RequestTriggerExitFromMapscreen( MAP_EXIT_TO_TACTICAL );
			}

			pSoldier->ubStrategicInsertionCode = INSERTION_CODE_CHOPPER;
		}

		UpdateMercInSector( pSoldier, pSoldier->sSectorX, pSoldier->sSectorY, pSoldier->bSectorZ );
	}
	else
	{
		// OK, otherwise, set them in north area, so once we load again, they are here.
		pSoldier->ubStrategicInsertionCode = INSERTION_CODE_NORTH;
	}

	if ( pSoldier->ubStrategicInsertionCode != INSERTION_CODE_CHOPPER )
	{
		ScreenMsg( FONT_MCOLOR_WHITE, MSG_INTERFACE, TacticalStr[ MERC_HAS_ARRIVED_STR ], pSoldier->name );

		// ATE: He's going to say something, now that they've arrived...
		if ( gTacticalStatus.bMercArrivingQuoteBeingUsed == FALSE && !gfFirstHeliRun )
		{
			gTacticalStatus.bMercArrivingQuoteBeingUsed = TRUE;

			//Setup the highlight sector value (note this isn't for mines but using same system)
			gsSectorLocatorX = pSoldier->sSectorX;
			gsSectorLocatorY = pSoldier->sSectorY;

			TacticalCharacterDialogueWithSpecialEvent( pSoldier, 0, DIALOGUE_SPECIAL_EVENT_MINESECTOREVENT, 2, 0 );
			TacticalCharacterDialogue( pSoldier, QUOTE_MERC_REACHED_DESTINATION );
			TacticalCharacterDialogueWithSpecialEvent( pSoldier, 0, DIALOGUE_SPECIAL_EVENT_MINESECTOREVENT, 3, 0 );
			TacticalCharacterDialogueWithSpecialEventEx( pSoldier, 0, DIALOGUE_SPECIAL_EVENT_UNSET_ARRIVES_FLAG, 0, 0, 0 );
		}
	}

	//record how long the merc will be gone for
	pMerc->bMercStatus = (UINT8)pSoldier->iTotalContractLength;

	// remember when excatly he ARRIVED in Arulco, in case he gets fired early
	pSoldier->uiTimeOfLastContractUpdate = GetWorldTotalMin();

	//set when the merc's contract is finished 
	pSoldier->iEndofContractTime = GetMidnightOfFutureDayInMinutes( pSoldier->iTotalContractLength ) + ( GetHourWhenContractDone( pSoldier ) * 60 );

	// Do initial check for bad items
	if ( pSoldier->bTeam == gbPlayerNum )
	{
		//ATE: Try to see if our equipment sucks!
		if ( SoldierHasWorseEquipmentThanUsedTo( pSoldier ) )
		{
			// Randomly anytime between 9:00, and 10:00
			uiTimeOfPost =  540 + Random( 660 );

			if ( GetWorldMinutesInDay() < uiTimeOfPost )
			{
				AddSameDayStrategicEvent( EVENT_MERC_COMPLAIN_EQUIPMENT, uiTimeOfPost , pSoldier->ubProfile );
			}
		}
	}

	HandleMercArrivesQuotes( pSoldier );

	fTeamPanelDirty = TRUE;

	// if the currently selected sector has no one in it, select this one instead
	if ( !CanGoToTacticalInSector( sSelMapX, sSelMapY, ( UINT8 )iCurrentMapSectorZ ) )
	{
		ChangeSelectedMapSector( pSoldier->sSectorX, pSoldier->sSectorY, 0 );
	}

	return;
}


BOOLEAN IsMercHireable( UINT8 ubMercID )
{
	//If the merc has an .EDT file, is not away on assignment, and isnt already hired (but not arrived yet), he is not DEAD and he isnt returning home
	if( ( gMercProfiles[ ubMercID ].bMercStatus == MERC_HAS_NO_TEXT_FILE ) || 
			( gMercProfiles[ ubMercID ].bMercStatus > 0 ) || 
			( gMercProfiles[ ubMercID ].bMercStatus == MERC_HIRED_BUT_NOT_ARRIVED_YET ) || 
			( gMercProfiles[ ubMercID ].bMercStatus == MERC_IS_DEAD ) ||
			( gMercProfiles[ ubMercID ].uiDayBecomesAvailable > 0 ) ||
			( gMercProfiles[ ubMercID ].bMercStatus == MERC_WORKING_ELSEWHERE ) ||
			( gMercProfiles[ ubMercID ].bMercStatus == MERC_FIRED_AS_A_POW ) ||
			( gMercProfiles[ ubMercID ].bMercStatus == MERC_RETURNING_HOME ) )
		return(FALSE);
	else
		return(TRUE);
}

BOOLEAN IsMercDead( UINT8 ubMercID )
{
	if( gMercProfiles[ ubMercID ].bMercStatus == MERC_IS_DEAD )
		return(TRUE);
	else
		return(FALSE);
}

BOOLEAN IsTheSoldierAliveAndConcious( SOLDIERTYPE		*pSoldier )
{
	if( pSoldier->bLife >= CONSCIOUSNESS )	
		return(TRUE);
	else
		return(FALSE);
}

UINT8	NumberOfMercsOnPlayerTeam()
{
	INT8					cnt;
	SOLDIERTYPE		*pSoldier;
	INT16					bLastTeamID;
	UINT8					ubCount=0;

	// Set locator to first merc
	cnt = gTacticalStatus.Team[ gbPlayerNum ].bFirstID;
	bLastTeamID = gTacticalStatus.Team[ gbPlayerNum ].bLastID;

  for ( pSoldier = MercPtrs[ cnt ]; cnt <= bLastTeamID; cnt++,pSoldier++)
	{	
		//if the is active, and is not a vehicle
		if( pSoldier->bActive && !( pSoldier->uiStatusFlags & SOLDIER_VEHICLE ) )
		{
			ubCount++;
		}
	}

	return( ubCount );
}


void HandleMercArrivesQuotes( SOLDIERTYPE *pSoldier )
{
	INT8										cnt, bHated, bLastTeamID;
	SOLDIERTYPE							*pTeamSoldier;
 
	// If we are approaching with helicopter, don't say any ( yet )
	if ( pSoldier->ubStrategicInsertionCode != INSERTION_CODE_CHOPPER )
	{
		// Player-generated characters issue a comment about arriving in Omerta.
		if ( pSoldier->ubWhatKindOfMercAmI == MERC_TYPE__PLAYER_CHARACTER)
		{
			if ( gubQuest[ QUEST_DELIVER_LETTER ] == QUESTINPROGRESS )
			{
				TacticalCharacterDialogue( pSoldier, QUOTE_PC_DROPPED_OMERTA );
			}
		}

		// Check to see if anyone hates this merc and will now complain
		cnt = gTacticalStatus.Team[ gbPlayerNum ].bFirstID;
		bLastTeamID = gTacticalStatus.Team[ gbPlayerNum ].bLastID;
		//loop though all the mercs
		for ( pTeamSoldier = MercPtrs[ cnt ]; cnt <= bLastTeamID; cnt++,pTeamSoldier++)
		{
			if ( pTeamSoldier->bActive )
			{
				if ( pTeamSoldier->ubWhatKindOfMercAmI == MERC_TYPE__AIM_MERC )
				{
					bHated = WhichHated( pTeamSoldier->ubProfile, pSoldier->ubProfile );
					if ( bHated != -1 )
					{
						// hates the merc who has arrived and is going to gripe about it!
						switch( bHated )
						{
							case 0:
								TacticalCharacterDialogue( pTeamSoldier, QUOTE_HATED_1_ARRIVES );
								break;
							case 1:
								TacticalCharacterDialogue( pTeamSoldier, QUOTE_HATED_2_ARRIVES );
								break;
							default:
								break;
						}
					}
				}
			}
		}
	}
}


#ifdef JA2TESTVERSION
void SetFlagToForceHireMerc( BOOLEAN fForceHire )
{
	gForceHireMerc = fForceHire;
}
#endif


UINT32 GetMercArrivalTimeOfDay( )
{
	UINT32		uiCurrHour;
	UINT32		uiMinHour; 

	// Pick a time...

	// First get the current time of day.....
	uiCurrHour = GetWorldHour( );

	// Subtract the min time for any arrival....
	uiMinHour	= uiCurrHour + MIN_FLIGHT_PREP_TIME;

	// OK, first check if we need to advance a whole day's time...
	// See if we have missed the last flight for the day...
	if ( ( uiCurrHour ) > 13  ) // ( > 1:00 pm - too bad )
	{
		// 7:30 flight....
		return( GetMidnightOfFutureDayInMinutes( 1 ) + MERC_ARRIVE_TIME_SLOT_1 );
	}

	// Well, now we can handle flights all in one day....
	// Find next possible flight
	if ( uiMinHour <= 7 )
	{
		return( GetWorldDayInMinutes() + MERC_ARRIVE_TIME_SLOT_1 ); // 7:30 am
	}
	else if ( uiMinHour <= 13 )
	{
		return( GetWorldDayInMinutes() + MERC_ARRIVE_TIME_SLOT_2 ); // 1:30 pm
	}
	else
	{
		return( GetWorldDayInMinutes() + MERC_ARRIVE_TIME_SLOT_3 ); // 7:30 pm
	}
}


void UpdateAnyInTransitMercsWithGlobalArrivalSector( )
{
	INT32 cnt;
	SOLDIERTYPE		*pSoldier;

	cnt = gTacticalStatus.Team[ gbPlayerNum ].bFirstID;

  // look for all mercs on the same team, 
  for ( pSoldier = MercPtrs[ cnt ]; cnt <= gTacticalStatus.Team[ gbPlayerNum ].bLastID; cnt++,pSoldier++)
	{	
		if ( pSoldier->bActive )
		{	
			if ( pSoldier->bAssignment == IN_TRANSIT ) 
			{
				if ( pSoldier->fUseLandingZoneForArrival )
				{
					pSoldier->sSectorX	= gsMercArriveSectorX;
					pSoldier->sSectorY	= gsMercArriveSectorY;
					pSoldier->bSectorZ	= 0;
				}				
			}
		}
	}
}

INT16 StrategicPythSpacesAway(INT16 sOrigin, INT16 sDest)
{
	INT16 sRows,sCols,sResult;

	sRows = abs((sOrigin / MAP_WORLD_X) - (sDest / MAP_WORLD_X));
	sCols = abs((sOrigin % MAP_WORLD_X) - (sDest % MAP_WORLD_X));

 
	// apply Pythagoras's theorem for right-handed triangle:
	// dist^2 = rows^2 + cols^2, so use the square root to get the distance
	sResult = (INT16)sqrt((double)(sRows * sRows) + (sCols * sCols));

	return(sResult);
}


// ATE: This function will check if the current arrival sector
// is valid
// if there are enemies present, it's invalid
// if so, search around for nearest non-occupied sector.
void CheckForValidArrivalSector( )
{
	INT16  sTop, sBottom;
	INT16  sLeft, sRight;
	INT16  cnt1, cnt2, sGoodX, sGoodY;
	UINT8	 ubRadius = 4;
	INT32	 leftmost;
	INT16	 sSectorGridNo, sSectorGridNo2;
	INT32	 uiRange, uiLowestRange = 999999;
	BOOLEAN	fFound = FALSE;
	CHAR16 sString[ 1024 ];
	CHAR16 zShortTownIDString1[ 50 ];
	CHAR16 zShortTownIDString2[ 50 ];

	sSectorGridNo = gsMercArriveSectorX + ( MAP_WORLD_X * gsMercArriveSectorY );

	// Check if valid...
	if ( !StrategicMap[ sSectorGridNo ].fEnemyControlled )
	{
		return;
	}

	GetShortSectorString( gsMercArriveSectorX ,gsMercArriveSectorY, zShortTownIDString1 );


	// If here - we need to do a search!
	sTop		= ubRadius;
	sBottom = -ubRadius;
	sLeft   = - ubRadius;
	sRight  = ubRadius;

	for( cnt1 = sBottom; cnt1 <= sTop; cnt1++ )
	{
		leftmost = ( ( sSectorGridNo + ( MAP_WORLD_X * cnt1 ) )/ MAP_WORLD_X ) * MAP_WORLD_X;

		for( cnt2 = sLeft; cnt2 <= sRight; cnt2++ )
		{
			sSectorGridNo2 = sSectorGridNo + ( MAP_WORLD_X * cnt1 ) + cnt2;

			if( sSectorGridNo2 >=1 && sSectorGridNo2 < ( ( MAP_WORLD_X - 1 ) * ( MAP_WORLD_X - 1 ) ) && sSectorGridNo2 >= leftmost && sSectorGridNo2 < ( leftmost + MAP_WORLD_X ) )
			{
				if ( !StrategicMap[ sSectorGridNo2 ].fEnemyControlled && !StrategicMap[ sSectorGridNo2 ].fEnemyAirControlled )
				{
					uiRange = StrategicPythSpacesAway( sSectorGridNo2, sSectorGridNo );

					if ( uiRange < uiLowestRange )
					{
						sGoodY = cnt1;
						sGoodX = cnt2;
						uiLowestRange = uiRange;
						fFound = TRUE;
					}
				}
			}
		}
	}

	if ( fFound )
	{
		gsMercArriveSectorX = gsMercArriveSectorX + sGoodX;
		gsMercArriveSectorY = gsMercArriveSectorY + sGoodY;

		UpdateAnyInTransitMercsWithGlobalArrivalSector( );

		GetShortSectorString( gsMercArriveSectorX ,gsMercArriveSectorY, zShortTownIDString2 );

		swprintf( sString, L"Arrival of new recruits is being rerouted to sector %s, as scheduled drop-off point of sector %s is enemy occupied.", zShortTownIDString2, zShortTownIDString1 );

		DoScreenIndependantMessageBox(  sString, MSG_BOX_FLAG_OK, NULL );

	}
}