rubidium@9380: /* $Id$ */
rubidium@9380: 
truebrain@9833: /** @file ai_town.cpp Implementation of AITown. */
rubidium@9380: 
rubidium@9430: #include "ai_town.hpp"
truebrain@9814: #include "ai_map.hpp"
rubidium@9430: #include "../../town.h"
rubidium@9723: #include "../../strings_func.h"
rubidium@9723: #include "../../town_type.h"
rubidium@9723: #include "../../core/alloc_func.hpp"
rubidium@9405: #include "table/strings.h"
rubidium@9380: 
truebrain@9737: /* static */ TownID AITown::GetMaxTownID()
rubidium@9380: {
rubidium@9380: 	return ::GetMaxTownIndex();
rubidium@9380: }
rubidium@9380: 
truebrain@9737: /* static */ int32 AITown::GetTownCount()
rubidium@9380: {
rubidium@9380: 	return ::GetNumTowns();
rubidium@9380: }
rubidium@9380: 
rubidium@9497: /* static */ bool AITown::IsValidTown(TownID town_id)
rubidium@9380: {
rubidium@9380: 	return ::IsValidTownID(town_id);
rubidium@9380: }
rubidium@9380: 
truebrain@9737: /* static */ char *AITown::GetName(TownID town_id)
rubidium@9380: {
truebrain@9736: 	if (!IsValidTown(town_id)) return NULL;
rubidium@9380: 	static const int len = 64;
rubidium@9380: 	char *town_name = MallocT<char>(len);
rubidium@9380: 
truebrain@9736: 	::SetDParam(0, town_id);
truebrain@9736: 	::GetString(town_name, STR_TOWN, &town_name[len - 1]);
rubidium@9380: 
rubidium@9380: 	return town_name;
rubidium@9380: }
rubidium@9380: 
truebrain@9737: /* static */ int32 AITown::GetPopulation(TownID town_id)
rubidium@9380: {
truebrain@10194: 	if (!IsValidTown(town_id)) return -1;
rubidium@9380: 	const Town *t = ::GetTown(town_id);
rubidium@9380: 	return t->population;
rubidium@9380: }
rubidium@9380: 
truebrain@9737: /* static */ TileIndex AITown::GetLocation(TownID town_id)
rubidium@9380: {
truebrain@9736: 	if (!IsValidTown(town_id)) return INVALID_TILE;
rubidium@9380: 	const Town *t = ::GetTown(town_id);
rubidium@9380: 	return t->xy;
rubidium@9380: }
truebrain@9814: 
truebrain@9814: /* static */ int32 AITown::GetDistanceManhattanToTile(TownID town_id, TileIndex tile)
truebrain@9814: {
truebrain@9814: 	return AIMap::DistanceManhattan(tile, GetLocation(town_id));
truebrain@9814: }
truebrain@9814: 
truebrain@9814: /* static */ int32 AITown::GetDistanceSquareToTile(TownID town_id, TileIndex tile)
truebrain@9814: {
truebrain@9814: 	return AIMap::DistanceSquare(tile, GetLocation(town_id));
truebrain@9814: }