/// Update the settle target information when a city grows
/// \param city The city
void SettleMap::HandleCityGrowth(const Unit & city)
{
Assert(city.IsValid());
MapPoint cityPos = city.RetPos();
CityData * citydata = city.GetCityData();
PLAYER_INDEX playerId = city.GetOwner();
sint32 radius = g_theCitySizeDB->Get(citydata->GetSizeIndex())->GetIntRadius();
/// @todo Check functionality. Using "2 * current radius + 1" looks arbitrary.
/// This does not account for future growth (city spacing may become too tight), but it also
/// prevents any overlap.
radius += radius + 1;
// Mark tiles near to the grown city as not worth to settle at all
RadiusIterator it(cityPos, radius);
for (it.Start(); !it.End(); it.Next())
{
MapPoint clearPos = it.Pos();
m_invalidCells.Set(clearPos.x, clearPos.y, TRUE);
}
const StrategyRecord & strategy = Diplomat::GetDiplomat(playerId).GetCurrentStrategy();
sint32 min_settle_distance = 0;
strategy.GetMinSettleDistance(min_settle_distance);
// Mark tiles further away as having only half the usual value
/// \todo Optimise using CircleIterator, to skip computing values for the already invalidated tiles.
RadiusIterator settleIt(cityPos, min_settle_distance);
for (settleIt.Start(); !settleIt.End(); settleIt.Next())
{
MapPoint claimPos = settleIt.Pos();
double const new_value = ComputeSettleValue(claimPos) * 0.5;
m_settleValues.SetGridValue(claimPos, new_value);
}
MapAnalysis::GetMapAnalysis().UpdateBoundingRectangle(city);
}
