// TODO
private void changePrice(StockReader stock, double amount)
{
double percentage = 0;
// fluctuate by ±amount * 0.4 ± skew
if (Math.Abs(amount) < 30)
{
double skew = randomGenerator.NextDouble() * 2;
skew *= randomGenerator.NextDouble() < 0.5 ? 1 : -1;
double fluctuation = fluctuation = randomGenerator.NextDouble() * (amount * 0.4 + skew);
fluctuation *= randomGenerator.NextDouble() < 0.5 ? 1 : -1;
percentage = amount + fluctuation;
}
// fluctuate by ±amount * 0.3 ± skew
else
{
double skew = randomGenerator.NextDouble() * 2;
skew *= randomGenerator.NextDouble() < 0.5 ? 1 : -1;
double fluctuation = fluctuation = randomGenerator.NextDouble() * (amount * 0.3 + skew);
fluctuation *= randomGenerator.NextDouble() < 0.5 ? 1 : -1;
percentage = amount + fluctuation;
}
// Update weight and percentage
StockReader lists = GameObject.Find("StockList").GetComponent <StockReader>();
double weight = System.Math.Sqrt(percentage);
lists.setWeight(weight);
lists.setPercentage(percentage);
}
private void PerturbAllStocks(double amount)
{
// Loop through all stocks
for (int i = 0; i < stockInitialiser.stockList.Length; i++)
{
StockReader stock = stockInitialiser.stockList[i];
double percentage = 0;
// fluctuate by ±amount * 0.4 ± skew
if (Math.Abs(amount) < 30)
{
double skew = randomGenerator.NextDouble() * 2;
skew *= randomGenerator.NextDouble() < 0.5 ? 1 : -1;
double fluctuation = fluctuation = randomGenerator.NextDouble() * (amount * 0.4 + skew);
fluctuation *= randomGenerator.NextDouble() < 0.5 ? 1 : -1;
percentage = amount + fluctuation;
}
// fluctuate by ±amount * 0.3 ± skew
else
{
double skew = randomGenerator.NextDouble() * 2;
skew *= randomGenerator.NextDouble() < 0.5 ? 1 : -1;
double fluctuation = fluctuation = randomGenerator.NextDouble() * (amount * 0.3 + skew);
fluctuation *= randomGenerator.NextDouble() < 0.5 ? 1 : -1;
percentage = amount + fluctuation;
}
// 3% of the time, the company will be hit very hard
// |x| = |x| ± 10.0
if (randomGenerator.NextDouble() < 0.03)
{
percentage += Math.Sign(percentage) * randomGenerator.NextDouble() * 10.0;
}
StockReader lists = GameObject.Find("StockList").GetComponent <StockReader>();
double weight = System.Math.Sqrt(percentage);
lists.setWeight(weight);
lists.setPercentage(percentage);
}
}