public Spinner(
IElementsMatrix machineSlots,
IRandomElementPicker randomElementPicker,
IWinCalculator winCalculator)
{
this.machineSlots = machineSlots;
this.randomElementPicker = randomElementPicker;
this.winCalculator = winCalculator;
}
public decimal Calculate(IElementsMatrix slotElementsMatrix, decimal bet)
{
decimal winAmount = 0;
foreach (var winningCombination in this.winningCombinations)
{
winAmount += winningCombination.CalculateWinAmount(slotElementsMatrix, bet);
}
return(winAmount);
}
public decimal CalculateWinAmount(IElementsMatrix matrix, decimal bet)
{
decimal winAmount = 0;
for (int row = 0; row < matrix.Rows; row++)
{
int startColIdx = 0;
SlotElement comparingElement = null;
//Get first non wildcard element and its position
while (startColIdx < matrix.Columns)
{
if (matrix.Slots[row, startColIdx].Symbol != _wildcard)
{
comparingElement = matrix.Slots[row, startColIdx];
break;
}
startColIdx++;
}
// Iterate to the end of the row to see if all elements are the same
// and to sum up their coeficient.
double coeficientSum = comparingElement?.Coeficient ?? 0;
bool winningLine = true;
for (int col = startColIdx + 1; col < matrix.Columns; col++)
{
SlotElement current = matrix.Slots[row, col];
if (comparingElement.Symbol != current.Symbol &&
current.Symbol != _wildcard)
{
winningLine = false;
break;
}
coeficientSum += current.Coeficient;
}
if (winningLine)
{
winAmount += (decimal)coeficientSum * bet;
}
}
return(Math.Round(winAmount, 1));
}
public UserInterface(IElementsMatrix machineSlots)
{
this.machineSlots = machineSlots;
}