public override void Step(CityMap cityMap)
{
object[] parameters = { XIndex, YIndex };
int xMiddle = cityMap.XSize / 2;
int yMiddle = cityMap.YSize / 2;
int randVal = cityMap.rand.Next();
double randomChanceWithHouse = cityMap.CountPercentTypeAround(XIndex, YIndex, 4, typeof(House));
double randomChanceWithCommercialBuildingNear = cityMap.CountPercentTypeAround(XIndex, YIndex, 2, typeof(CommercialBuilding));
double randomChanceWithHighRiseNear = cityMap.CountPercentTypeAround(XIndex, YIndex, 2, typeof(HighRise));
double randomChanceWithEmptyFar = cityMap.CountPercentTypeAround(XIndex, YIndex, 4, typeof(Empty));
double randomChanceWithSurroundingBias;
if (randomChanceWithEmptyFar < 0.001)
{
randomChanceWithSurroundingBias = 100000 * randomChanceWithHighRiseNear + 100 * randomChanceWithCommercialBuildingNear;
}
else
{
randomChanceWithSurroundingBias = 0;
}
double percentCenterBias = CalculateCenterBias(xMiddle, yMiddle, 100, 1);
double randomOddsOfPromotion = (randomChanceWithSurroundingBias * PromotionMultiplierOnUpgradeType) + RandomChancePromotion;
randomOddsOfPromotion = randomOddsOfPromotion * percentCenterBias;
if (randVal < Int32.MaxValue * randomOddsOfPromotion)
{
CityStructure newStructure = (CityStructure)Activator.CreateInstance(typeof(HighRise), parameters);
cityMap[XIndex, YIndex] = newStructure;
}
}
private double CalculateSurroundingEffectOnHousePromote(CityMap cityMap, double housePromoteProbability)
{
double contributingEffect = cityMap.CountPercentTypeAround(XIndex, YIndex, 3, typeof(CommercialBuilding)) + cityMap.CountPercentTypeAround(XIndex, YIndex, 3, typeof(House));
return(contributingEffect * housePromoteProbability);
}