public VendingMachineSoftware(List <int> coinKinds, int selectionButtonCount, int coinRackCapacity, int popRackCapacity, int receptacleCapacity)
{
// process information
buttonCount = selectionButtonCount;
this.coinRackCapacity = coinRackCapacity;
this.popRackCapacity = popRackCapacity;
this.receptacleCapacity = receptacleCapacity;
this.coinKinds = coinKinds;
// create machine hardware
vendingHardware = new VendingMachine(coinKinds.ToArray(), selectionButtonCount, coinRackCapacity, popRackCapacity, receptacleCapacity);
// default information
pops = new List <SoftwarePop>();
softwareRacks = new List <SoftwareCoinRacks>();
// create software version of coin racks
for (int i = 0; i < coinKinds.Count; i++)
{
SoftwareCoinRacks newCoinRack = new SoftwareCoinRacks(coinKinds[i], 0);
softwareRacks.Add(newCoinRack);
}
insertedAmount = 0;
// set up handlers
CoinSlot coinSlot = vendingHardware.CoinSlot;
coinSlot.CoinRejected += new EventHandler <CoinEventArgs>(printCoinRejected);
coinSlot.CoinAccepted += new EventHandler <CoinEventArgs>(printCoinAccepted);
SelectionButton[] buttons = vendingHardware.SelectionButtons;
// add handler to each button
foreach (SelectionButton button in buttons)
{
button.Pressed += new EventHandler(printButtonPressed);
}
CoinRack[] coinRacks = vendingHardware.CoinRacks;
// add handler to each coin rack
foreach (CoinRack coinRack in coinRacks)
{
coinRack.CoinAdded += new EventHandler <CoinEventArgs>(printCoinLoaded);
}
PopCanRack[] popRacks = vendingHardware.PopCanRacks;
// add handler to each pop rack
foreach (PopCanRack rack in popRacks)
{
rack.PopCanRemoved += new EventHandler <PopCanEventArgs>(printPopDispensed);
}
}
public void loadCoins(int coinKindIndex, List <Coin> coins)
{
// load in software
SoftwareCoinRacks getRack = softwareRacks[coinKindIndex];
getRack.incQuantity(coins.Count);
// load in hardware
CoinRack[] racks = vendingHardware.CoinRacks;
CoinRack coinRack = null;
try
{
coinRack = racks[coinKindIndex];
} catch (Exception e)
{
Console.WriteLine("Invalid coin kind index");
}
coinRack.LoadCoins(coins);
//Console.WriteLine("Load: " + coinKinds[coinKindIndex]);
}
public int dispenseChange(int change)
{
/* Change Algorithm */
// change algorithm from A1 (slightly modified)
int val = change;
int upperBound = val + 1;
int largestCoinVal = 0;
// loop change process until either
// no more valid coins, or change
// value is met (where the loop will
// be broken)
while (true)
{
// loop through coin slots to find
// next denomination
// if found, sets the largestSlot
// to a Coin, which has a value
SoftwareCoinRacks largestSlot = null;
int slotIndex = 0;
int counter = 0;
foreach (SoftwareCoinRacks slot in softwareRacks)
{
int rackValue = slot.getValue();
if (rackValue >= largestCoinVal && rackValue < upperBound)
{
largestCoinVal = rackValue;
largestSlot = slot;
slotIndex = counter;
}
counter++;
}
// check if largest coin is null
// if so, then we have not found
// a suitable change coin (we will
// short change them)
if (largestSlot == null)
{
break;
}
// now we have next largest coin
// decrease until target met, each
// time removing a coin from the
// coin slot, and adding it to the
// coin change list
bool runLoop = true;
bool changeFinished = false;
while (runLoop && largestSlot.getQuantity() > 0)
{
// decrement change total by coin
// denomination
val = val - largestCoinVal;
if (val >= 0)
{
// returned coin may be "incorrect" if the
// slot was loaded incorrectly - this is
// the desired functionality
CoinRack[] coinRacks = vendingHardware.CoinRacks;
// release coin in hardware and in software
coinRacks[slotIndex].ReleaseCoin();
largestSlot.decQuantity();
Console.WriteLine("Dispensing coin: " + largestCoinVal);
// if new change value is zero, all change
// has been added to the coin change list
// so terminate loop
if (val == 0)
{
runLoop = false;
changeFinished = true;
}
}
else
{
// if change value is negative, reverse
// last decrement and move to lower
// denomination
val = val + largestCoinVal;
runLoop = false;
}
}
// if change finished flag is set, then
// exit main loop
if (changeFinished)
{
break;
}
// else, reset variables and start next
// loop to find lower denomination
upperBound = largestCoinVal;
largestCoinVal = 0;
}
return(val);
}
