/**********************************************************************
 * Copyright (c)2000-2002 Sony Online Entertainment Inc.
 * All Rights Reserved
 *
 * Title:        districts.scriptlib
 * Description:  municipal districts library
 * @author       $Author:$
 * @version      $Revision:$
 **********************************************************************/

/***** INCLUDES ********************************************************/

include library.utils;
include library.regions;

/***** CONSTANTS *******************************************************/

const int DISTRICT_SIZE                                   = 256;

const int PLANET_X_MIN                                    = -8192;
const int PLANET_Z_MIN                                    = -8192;

const int PLANET_X_MAX                                    = 8192;
const int PLANET_Z_MAX                                    = 8192;

const int PLANET_DISTRICT_WIDTH                           = (PLANET_X_MAX - PLANET_X_MIN) / DISTRICT_SIZE;
const int PLANET_DISTRICT_LENGTH                          = (PLANET_Z_MAX - PLANET_Z_MIN) / DISTRICT_SIZE;

const int PLANET_DISTRICTS_TOTAL                          = PLANET_DISTRICT_WIDTH * PLANET_DISTRICT_LENGTH;

const string_id DISTRICT_FICTIONAL_NAME                   = new string_id("region_names", "municipal_district");

const string VAR_DISTRICT_ID	                          = "district.id";			//stores int (district number for planet)

const string VAR_DISTRICT_LOC                             = "district.loc";			//stores location (lower left)

const string VAR_DISTRICT_POLLBOOTH                       = "district.pollbooth";		//stores obj_id
const string VAR_DISTRICT_CITYHALL                        = "district.cityhall";		//stores obj_id

const string VAR_DISTRICT_RESIDENTS                       = "district.residents";		//stores obj_id[]

const string VAR_DISTRICT_MASTER_DISTRICT                 = "district.master_district";   	//stores obj_id
const string VAR_DISTRICT_JOINED_DISTRICTS                = "district.joined_districts";	//stores obj_id[]

const string VAR_DISTRICT_IS_MASTER_DISTRICT              = "district.is_master";		//stores boolean

const string VAR_PLANET_DISTRICT_REGISTER                 = "districts.register";
const string VAR_PLANET_DISTRICT_OBJ_IDS                  = "districts.obj_ids";

const string SCRIPT_CITIES_PLANET                         = "systems.player_run_cities.planet";

/***** FUNCTIONS *******************************************************/

/*****************************************************************
 * @brief sections a planet into discrete municipal district regions
 *
 * @return void
 ******************************************************************
 void createMunicipalDistricts()
 {
  int n = 0;

  for ( int z = PLANET_Z_MIN; z < (PLANET_Z_MAX - DISTRICT_SIZE); z = z + DISTRICT_SIZE )
  {
   for ( int x = PLANET_X_MIN; x < (PLANET_X_MAX - DISTRICT_SIZE); x = x + DISTRICT_SIZE )
   {
    location loc1 = new location();
    loc1.x = x;
    loc1.z = z;

    location loc2 = new location();
    loc2.x = x + DISTRICT_SIZE;
    loc2.z = z + DISTRICT_SIZE;

    region district = createRectRegion(loc1, loc2);

    setRegionFictionalName(district, DISTRICT_FICTIONAL_NAME);

    //initDistrictObjVars(district);

    n++;
   }
  }
 }
 */
/*****************************************************************
 * @brief creates the municipal district for the point specified
 *
 * @param location loc
 *
 * @return boolean; false on error
 ******************************************************************
 boolean createMunicipalDistrictAtPoint(location loc)
 {
  if ( loc == null )
  {
   return false;
  }

  if ( (loc.x > PLANET_X_MAX) || (loc.x < PLANET_X_MIN) || (loc.z > PLANET_Z_MAX) || (loc.z < PLANET_Z_MIN) )
  {
   return false;
  }

  int districtNumber = calculateDistrictNumber(loc);
  if ( districtNumber < 0 )
  {
   return false;
  }

  location ll = calculateDistrictCoordinate(loc);
  location ur = new location();

  ur.x = ll.x + DISTRICT_SIZE;
  ur.z = ll.z + DISTRICT_SIZE;

  region district = createRectRegion(ll, ur);

  setRegionFictionalName(district, DISTRICT_FICTIONAL_NAME);

  //registerDistrictWithPlanet(district);

  //return initDistrictObjVars(district);
  return true; //used in place of above line
 }
*/
 /*****************************************************************
  * @brief initializes a municipal district's objvars
  *
  * @param region r
  *
  * @return boolean
  ******************************************************************
 boolean initDistrictObjVars(region r)
 {
  if ( r == null )
  	return false;

  obj_id districtId = r.getObjId();

  setObjVar(districtId, VAR_DISTRICT_IS_MASTER_DISTRICT, false);

  return true;
 }
*/

 /*****************************************************************
  * @brief adds an obj_id to the list of district residents
  *
  * @param obj_id	districtId
  * @param obj_id	player
  *
  * @return boolean
  ******************************************************************
  boolean addResidentToDistrict(obj_id districtId, obj_id player)
  {
   if ( (districtId == null) || (player == null) )
   	return false;

   if ( hasObjVar(districtId, VAR_DISTRICT_RESIDENTS) )
   {
    obj_id[] residents = getObjIdArrayObjVar(districtId, VAR_DISTRICT_RESIDENTS);

    if ( (residents == null) || (residents.length == 0) )
    {
     removeObjVar(districtId, VAR_DISTRICT_RESIDENTS);
     return addResidentToDistrict(districtId, player);
    }

    obj_id[] newResidents = new obj_id[residents.length + 1];
    newResidents = utils.addElement(residents, player);

    return setObjVar(districtId, VAR_DISTRICT_RESIDENTS, newResidents);
   }
   else
   {
    obj_id[] residents = new obj_id[1];
    residents[0] = player;
    return setObjVar(districtId, VAR_DISTRICT_RESIDENTS, residents);
   }
  }
*/
 /*****************************************************************
  * @brief adds an obj_id to the list of district residents
  *
  * @param region	district
  * @param obj_id	player
  *
  * @return boolean
  ******************************************************************
  boolean addResidentToDistrict(region district, obj_id player)
  {
   if ( (district == null) || (player == null) )
   	return false;

   return addResidentToDistrict(district.getObjId(), player);
  }
*/
 /*****************************************************************
  * @brief adds an obj_id[] to the list of district residents
  *
  * @param obj_id	districtId
  * @param obj_id[]	players
  *
  * @return boolean
  ******************************************************************
  boolean addResidentsToDistrict(obj_id districtId, obj_id[] players)
  {
   if ( (districtId == null) || (players == null) )
   	return false;

   if ( hasObjVar(districtId, VAR_DISTRICT_RESIDENTS) )
   {
    obj_id[] residents = getObjIdArrayObjVar(districtId, VAR_DISTRICT_RESIDENTS);

    if ( (residents == null) || (residents.length == 0) )
    {
     removeObjVar(districtId, VAR_DISTRICT_RESIDENTS);
     return addResidentsToDistrict(districtId, players);
    }

    obj_id[] newResidents = new obj_id[residents.length + players.length];
    newResidents = utils.concatArrays(residents, players);

    return setObjVar(districtId, VAR_DISTRICT_RESIDENTS, newResidents);
   }
   else
   {
    return setObjVar(districtId, VAR_DISTRICT_RESIDENTS, players);
   }
  }
*/
 /*****************************************************************
  * @brief adds an obj_id[] to the list of district residents
  *
  * @param region	district
  * @param obj_id[]	players
  *
  * @return boolean
  ******************************************************************
  boolean addResidentsToDistrict(region district, obj_id[] players)
  {
   if ( (district == null) || (players == null) )
   	return false;

   return addResidentsToDistrict(district.getObjId(), players);
  }
*/
 /*****************************************************************
  * @brief removes an obj_id from the list of district residents
  *
  * @param obj_id	districtId
  * @param obj_id	player
  *
  * @return boolean
  ******************************************************************
  boolean removeResidentFromDistrict(obj_id districtId, obj_id player)
  {
   if ( (districtId == null) || (player == null) )
   	return false;

   if ( hasObjVar(districtId, VAR_DISTRICT_RESIDENTS) )
   {
    obj_id[] residents = getObjIdArrayObjVar(districtId, VAR_DISTRICT_RESIDENTS);

    if ( (residents == null) || (residents.length == 0) )
    {
     removeObjVar(districtId, VAR_DISTRICT_RESIDENTS);
     return false;
    }

    obj_id[] newResidents = new obj_id[residents.length - 1];
    newResidents = utils.removeElement(residents, player);

    return setObjVar(districtId, VAR_DISTRICT_RESIDENTS, newResidents);
   }
   else
   {
    return false;
   }
  }
*/
 /*****************************************************************
  * @brief removes an obj_id from the list of district residents
  *
  * @param region	district
  * @param obj_id	player
  *
  * @return boolean
  ******************************************************************
  boolean removeResidentFromDistrict(region district, obj_id player)
  {
   if ( (district == null) || (player == null) )
   	return false;

   return removeResidentFromDistrict(district.getObjId(), player);
  }
*/
 /*****************************************************************
  * @brief removes an obj_id from the list of district residents
  *
  * @param obj_id	districtId
  * @param obj_id[]	players
  *
  * @return boolean
  ******************************************************************
  boolean removeResidentsFromDistrict(obj_id districtId, obj_id[] players)
  {
   if ( (districtId == null) || (players == null) )
   	return false;

   if ( hasObjVar(districtId, VAR_DISTRICT_RESIDENTS) )
   {
    obj_id[] residents = getObjIdArrayObjVar(districtId, VAR_DISTRICT_RESIDENTS);

    if ( (residents == null) || (residents.length == 0) )
    {
     removeObjVar(districtId, VAR_DISTRICT_RESIDENTS);
     return false;
    }

    if ( residents.length < players.length )
    	return false;

    if ( utils.isSubset(residents, players) )
    {
     obj_id[] newResidents = new obj_id[residents.length - players.length];
     newResidents = utils.removeElements(residents, players);
     return setObjVar(districtId, VAR_DISTRICT_RESIDENTS, newResidents);
    }
    else
    {
     //not all elements in players are in residents
     return false;
    }
   }
   else
   {
    return false;
   }
  }
*/
 /*****************************************************************
  * @brief removes an obj_id from the list of district residents
  *
  * @param region	district
  * @param obj_id[]	players
  *
  * @return boolean
  ******************************************************************
  boolean removeResidentsFromDistrict(region district, obj_id[] players)
  {
   if ( (district == null) || (players == null) )
   	return false;

   return removeResidentsFromDistrict(district.getObjId(), players);
  }
*/

 /*****************************************************************
  * @brief validates that a pollbooth may be placed and sets it if possible
  *
  * @param obj_id	districtId
  * @param obj_id	pollbooth
  *
  * @return boolean
  ******************************************************************
  boolean addPollbooth(obj_id districtId, obj_id pollbooth)
  {
   if ( (districtId == null) || (pollbooth == null) )
   	return false;

   if ( hasObjVar(districtId, VAR_DISTRICT_POLLBOOTH) )
   {
    obj_id currentBooth = getObjIdObjVar(districtId, VAR_DISTRICT_POLLBOOTH);

    if ( currentBooth == null )
    {
     removeObjVar(districtId, VAR_DISTRICT_POLLBOOTH);
     return addPollbooth(districtId, pollbooth);
    }
    else
    {
     return false;
    }
   }
   else
   {
    return setObjVar(districtId, VAR_DISTRICT_POLLBOOTH, pollbooth);
   }
  }
*/
 /*****************************************************************
  * @brief validates that a pollbooth may be placed and sets it if possible
  *
  * @param region	district
  * @param obj_id	pollbooth
  *
  * @return boolean
  ******************************************************************
  boolean addPollbooth(region district, obj_id pollbooth)
  {
   if ( (district == null) || (pollbooth == null) )
   	return false;

   return addPollbooth(district.getObjId(), pollbooth);
  }
*/
 /*****************************************************************
  * @brief validates that a pollbooth is placed and removes it if possible
  *
  * @param obj_id	districtId
  * @param obj_id	pollbooth
  *
  * @return boolean
  ******************************************************************
  boolean removePollbooth(obj_id districtId, obj_id pollbooth)
  {
   if ( (districtId == null) || (pollbooth == null) )
   	return false;

   if ( hasObjVar(districtId, VAR_DISTRICT_POLLBOOTH) )
   {
    obj_id currentBooth = getObjIdObjVar(districtId, VAR_DISTRICT_POLLBOOTH);

    if ( currentBooth == pollbooth )
    {
     removeObjVar(districtId, VAR_DISTRICT_POLLBOOTH);
     return true;
    }
   }
   return false;
  }
*/
 /*****************************************************************
  * @brief validates that a pollbooth is placed and removes it if possible
  *
  * @param region	district
  * @param obj_id	pollbooth
  *
  * @return boolean
  ******************************************************************
  boolean removePollbooth(region district, obj_id pollbooth)
  {
   if ( (district == null) || (pollbooth == null) )
   	return false;

   return removePollbooth(district.getObjId(), pollbooth);
  }
*/
 /*****************************************************************
  * @brief retrieves the municipal district region at the specified location
  *
  * @param location	loc
  *
  * @return region; null on error
  ******************************************************************
  region getDistrictRegiontAtPoint(location loc)
  {
   if ( loc == null )
   	return null;

   region[] allRegions = getRegionsAtPoint(loc);

   if ( allRegions == null )
   	return null;

   for ( int i = 0; i < allRegions.length; i++ )
   {
    if ( allRegions[i].getFictionalName() == DISTRICT_FICTIONAL_NAME )
    	return allRegions[i];
   }
   return null;
  }
*/
 /*****************************************************************
  * @brief retrieves the municipal district region at the specified location
  *
  * @param obj_id	target
  *
  * @return region; null on error
  ******************************************************************
  region getDistrictRegiontAtPoint(obj_id target)
  {
   if ( target == null )
   	return null;

   return getDistrictRegiontAtPoint(getLocation(target));
  }
*/
 /*****************************************************************
  * @brief retrieves the municipal district obj_id at the specified location
  *
  * @param location	loc
  *
  * @return obj_id; null on error
  ******************************************************************
  obj_id getDistrictObjIdAtPoint(location loc)
  {
   if ( loc == null )
   	return null;

   return getDistrictRegiontAtPoint(loc).getObjId();
  }
*/
 /*****************************************************************
  * @brief retrieves the municipal district region at the specified location
  *
  * @param obj_id	target
  *
  * @return obj_id; null on error
  ******************************************************************
  obj_id getDistrictObjIdAtPoint(obj_id target)
  {
   if ( target == null )
   	return null;

   return getDistrictObjIdAtPoint(getLocation(target));
  }
*/
 /*****************************************************************
  * @brief validates that a cityhall may be placed and sets it if possible
  *
  * @param obj_id	districtId
  * @param obj_id	cityhall
  *
  * @return boolean
  ******************************************************************
  boolean addCityHall(obj_id districtId, obj_id cityhall)
  {
   if ( (districtId == null) || (cityhall == null) )
   	return false;

   if ( hasObjVar(districtId, VAR_DISTRICT_CITYHALL) )
   {
    obj_id currentBooth = getObjIdObjVar(districtId, VAR_DISTRICT_CITYHALL);

    if ( currentBooth == null )
    {
     removeObjVar(districtId, VAR_DISTRICT_CITYHALL);
     return addCityHall(districtId, cityhall);
    }
    else
    {
     return false;
    }
   }
   else
   {
    return setObjVar(districtId, VAR_DISTRICT_CITYHALL, cityhall);
   }
  }
*/
 /*****************************************************************
  * @brief validates that a cityhall may be placed and sets it if possible
  *
  * @param region	district
  * @param obj_id	cityhall
  *
  * @return boolean
  ******************************************************************
  boolean addCityHall(region district, obj_id cityhall)
  {
   if ( (district == null) || (cityhall == null) )
   	return false;

   return addCityHall(district.getObjId(), cityhall);
  }
*/
 /*****************************************************************
  * @brief validates that a cityhall is placed and removes it if possible
  *
  * @param obj_id	districtId
  * @param obj_id	cityhall
  *
  * @return boolean
  ******************************************************************
  boolean removeCityHall(obj_id districtId, obj_id cityhall)
  {
   if ( (districtId == null) || (cityhall == null) )
   	return false;

   if ( hasObjVar(districtId, VAR_DISTRICT_CITYHALL) )
   {
    obj_id currentBooth = getObjIdObjVar(districtId, VAR_DISTRICT_CITYHALL);

    if ( currentBooth == cityhall )
    {
     removeObjVar(districtId, VAR_DISTRICT_CITYHALL);
     return true;
    }
   }
   return false;
  }
*/
 /*****************************************************************
  * @brief validates that a cityhall is placed and removes it if possible
  *
  * @param region	district
  * @param obj_id	cityhall
  *
  * @return boolean
  ******************************************************************
  boolean removeCityHall(region district, obj_id cityhall)
  {
   if ( (district == null) || (cityhall == null) )
   	return false;

   return removeCityHall(district.getObjId(), cityhall);
  }
*/

 /*****************************************************************
  * @brief determines if a district is a master district of a city
  *
  * @param obj_id	districtId
  *
  * @return boolean
  ******************************************************************
  boolean isMasterDistrict(obj_id districtId)
  {
   if ( districtId == null )
   	return false;

   if ( hasObjVar(districtId, VAR_DISTRICT_IS_MASTER_DISTRICT) )
   {
    return getBooleanObjVar(districtId, VAR_DISTRICT_IS_MASTER_DISTRICT);
   }
   else
   {
    setObjVar(districtId, VAR_DISTRICT_IS_MASTER_DISTRICT, false);
    return false;
   }
  }
*/
 /*****************************************************************
  * @brief determines if a district is a master district of a city
  *
  * @param region	district
  *
  * @return boolean
  ******************************************************************
  boolean isMasterDistrict(region district)
  {
   return isMasterDistrict(district.getObjId());
  }
*/
 /*****************************************************************
  * @brief tries to discover the master district associated with the current district
  *
  * @param obj_id	districtId
  *
  * @return obj_id; null on error
  ******************************************************************
  obj_id deduceMasterDistrict(obj_id districtId)
  {
   if ( districtId == null )
   	return null;

   if ( hasObjVar(districtId, VAR_DISTRICT_JOINED_DISTRICTS) )
   {
    obj_id[] joinedDistricts = getObjIdArrayObjVar(districtId, VAR_DISTRICT_JOINED_DISTRICTS);

    if ( joinedDistricts == null )
    	return null;

    for ( int i = 0; i < joinedDistricts.length; i++ )
    {
     if ( hasObjVar(joinedDistricts[i], VAR_DISTRICT_JOINED_DISTRICTS) && hasObjVar(joinedDistricts[i], VAR_DISTRICT_IS_MASTER_DISTRICT))
     {
      boolean isMaster = getBooleanObjVar(joinedDistricts[i], VAR_DISTRICT_IS_MASTER_DISTRICT);
      if ( isMaster )
      {
       obj_id[] masterJoined = getObjIdArrayObjVar(joinedDistricts[i], VAR_DISTRICT_JOINED_DISTRICTS);
       if ( masterJoined == null )
       	return null;

       if ( utils.getElementPositionInArray(masterJoined, districtId) > -1 )
       {
        return joinedDistricts[i];
       }
      }
     }
    }
    return null;
   }
   else
   {
    return null;
   }
  }
*/
 /*****************************************************************
  * @brief tries to discover the master district associated with the current district
  *
  * @param region	district
  *
  * @return obj_id; null on error
  ******************************************************************
  obj_id deduceMasterDistrict(region district)
  {
   return deduceMasterDistrict(district.getObjId());
  }
*/
 /*****************************************************************
  * @brief calculates the district number given the specified location
  *
  * @param location	loc
  *
  * @return int; -1 on error
  ******************************************************************/
  int calculateDistrictNumber(location loc)
  {
   if ( loc == null )
   {
    return -1;
   }

   if ( (loc.x > PLANET_X_MAX) || (loc.x < PLANET_X_MIN) || (loc.z > PLANET_Z_MAX) || (loc.z < PLANET_Z_MIN) )
   {
    return -1;
   }

   int gridColumn = (int)(loc.x/DISTRICT_SIZE);
   int gridRow = (int)(loc.z/DISTRICT_SIZE);

   int districtNumber = (gridRow * PLANET_DISTRICT_WIDTH) + gridColumn;

   return districtNumber;
  }

 /*****************************************************************
  * @brief calculates the district base coordinate
  *
  * @param location	loc
  *
  * @return location; null on error
  ******************************************************************/
  location calculateDistrictCoordinate(location loc)
  {
   if ( loc == null )
   {
    return null;
   }

   if ( (loc.x > PLANET_X_MAX) || (loc.x < PLANET_X_MIN) || (loc.z > PLANET_Z_MAX) || (loc.z < PLANET_Z_MIN) )
   {
    return null;
   }

   int gridColumn = (int)(loc.x/DISTRICT_SIZE);
   int gridRow = (int)(loc.z/DISTRICT_SIZE);

   location retLoc = new location();

   retLoc.x = gridColumn * DISTRICT_SIZE;
   retLoc.z = gridRow * DISTRICT_SIZE;

   return retLoc;
  }

 /*****************************************************************
  * @brief calculates the district base coordinate
  *
  * @param int districtId
  *
  * @return location; null on error
  ******************************************************************/
  location calculateDistrictCoordinate(int districtId)
  {
   if ( districtId < 0 )
   {
    return null;
   }

   int gridRow = districtId / PLANET_DISTRICT_WIDTH;
   int gridColumn = districtId % PLANET_DISTRICT_WIDTH;

   location retLoc = new location();

   retLoc.x = gridColumn * DISTRICT_SIZE;
   retLoc.z = gridRow * DISTRICT_SIZE;

   return retLoc;
  }


 /*****************************************************************
  * @brief registers an independent municipal district with the planet
  *
  * @param region district
  *
  * @return boolean; false on error
  ******************************************************************/
  boolean registerDistrictWithPlanet(region district)
  {
   return true; //HACK
  }