SLIC-Reference : : CreateCity

Arguments:

owner, nearlocation, distance[, savecity]

Type:

int

Create a city belonging to owner, at approximately distance tiles away from nearlocation

If a city variable is passed in to savecity, it will contain the newly created city after this function returns. Example:

//when the first city is created (i.e. I settle a settler)

city_t my_city;
city_t new_city;

HandleEvent(CreateCity) post
{

    if(IsHumanPlayer(player[0]))
    {
        my_city = city[0];

        //I want to create a city about 5 tiles from my first city,
        //and then save the new city in a variable
        CreateCity(player[0], my_city.location, 5, new_city);

    }

}

tested working

Source:

SFN_ERROR Slic_CreateCity::Call(SlicArgList *args)
{
	if (args->Count() < 3 || args->Count() > 4)
		return SFN_ERROR_NUM_ARGS;

	sint32 owner;
	if(!args->GetPlayer(0, owner)) {
		return SFN_ERROR_TYPE_ARGS;
	}

	MapPoint pos;
	if(!args->GetPos(1, pos))
		return SFN_ERROR_TYPE_ARGS;

	sint32 distance;
	if(!args->GetInt(2, distance))
		return SFN_ERROR_TYPE_ARGS;

	sint32 x, y;
	BOOL found = FALSE;
	static DynamicArray legalPoints;
	legalPoints.Clear();

	sint16 origContinent = g_theWorld->GetContinent(pos);
	
	for(x = 0; x < g_theWorld->GetXWidth(); x++) {
		for(y = 0; y < g_theWorld->GetYHeight(); y++) {
			MapPoint chk(x, y);
			if(g_theWorld->GetContinent(chk) == origContinent &&
			   !g_theWorld->IsNextToCity(chk) &&
			   !g_theWorld->IsCity(chk)) {
				legalPoints.Insert(chk);
				found = TRUE;
			}
		}
	}

	if(!found) {
		m_result.m_int = 0;
		return SFN_ERROR_OK;
	}

	sint32 bestDistance = 0x7fffffff;
	sint32 bestDiff = 0x7fffffff;
	sint32 i;
	for(i = 0; i < legalPoints.Num(); i++) {
		sint32 dist = pos.NormalizedDistance(legalPoints[i]);
		if(abs(distance - dist) < bestDiff) {
			bestDiff = abs(distance - dist);
			bestDistance = dist;
		}
	}

	for(i = legalPoints.Num() - 1; i >= 0; i--) {
		sint32 dist = pos.NormalizedDistance(legalPoints[i]);
		if(dist != bestDistance) {
			legalPoints.DelIndex(i);
		}
	}

	MapPoint cpos;
	cpos = legalPoints[g_rand->Next(legalPoints.Num())];
	const UnitRecord *rec;
	for(i = 0; i < g_theUnitDB->NumRecords() - 1; i++) {
		rec = g_theUnitDB->Get(i, g_player[owner]->GetGovernmentType());
		if(!rec->GetHasPopAndCanBuild())
			continue;
		if((g_theWorld->IsLand(cpos) || g_theWorld->IsMountain(cpos)) && 
		   !g_theWorld->IsWater(cpos) && rec->GetMovementTypeLand())
			break;
		if(g_theWorld->IsWater(cpos) && rec->GetMovementTypeSea())
			break;
		if(g_theWorld->IsSpace(cpos) && rec->GetMovementTypeSpace())
			break;
	}
	if(i >= g_theUnitDB->NumRecords() - 1) {
		m_result.m_int = 0;
		return SFN_ERROR_OK;
	}

	Unit city = g_player[owner]->CreateCity(i, cpos,
											CAUSE_NEW_CITY_SCENARIO,
											NULL, -1);
	if(city.m_id == 0) {
		m_result.m_int = 0;
		return SFN_ERROR_OK;
	}

	m_result.m_int = 1;
	if (args->Count() > 3) {
		if(args->m_argValue[3].m_type == SA_TYPE_INT_VAR) {
			SlicSymbolData *sym = args->m_argValue[3].m_symbol;
			if(sym->GetType() == SLIC_SYM_CITY) {
				sym->SetCity(city);
			}
		}
	}
	return SFN_ERROR_OK;
}

Information last updated by BureauBert on 23.11.2010

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