/// <summary>
/// Callback that is fired every time the count of ListBlueUnits or ListRedUnits changes.
/// If IsBattleGoingOn = true and one of the fields gets empty. The battle is over.
/// When the battle ends, a message is shown, both fields get cleared and both teams points are restored.
/// </summary>
private async void ListUnits_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
if (!((IEnumerable <UnitViewModel>)sender).Any() && IsBattleGoingOn)
{
var winningTeam = ListBlueUnits.Any() ? "Blue" : "Red";
var message = new MessageDialog("The " + winningTeam + " won the battle!!!");
await message.ShowAsync();
IsBattleGoingOn = false;
DoClearBattleField();
}
}
/// <summary>
/// Resets the battle field.
/// </summary>
private void DoClearBattleField()
{
while (ListRedUnits.Any())
{
ListRedUnits.First().Dead();
}
while (ListBlueUnits.Any())
{
ListBlueUnits.First().Dead();
}
FormVisible = false;
BluePoints = MAX_TEAM_POINTS;
RedPoints = MAX_TEAM_POINTS;
}
/// <summary>
/// When a unit dies, the MainViewModel unsubscribes the unit events, restores unit points to the
/// total of the team points and remove it from the field of battle.
/// </summary>
/// <param name="sender">The dead unit</param>
/// <param name="Team">The team of the dead unit</param>
private void Unit_UnitDied(object sender, UnitTeam Team)
{
var unit = sender as UnitViewModel;
unit.UnitAttack -= Unit_UnitAttack;
unit.UnitDied -= Unit_UnitDied;
if (Team == UnitTeam.Red)
{
ListRedUnits.Remove(unit);
ObserverHelper <MainViewModel, int> .NotifyObservers(unit, RedPoints + unit.UsedPoints);
}
else
{
ListBlueUnits.Remove(unit);
ObserverHelper <MainViewModel, int> .NotifyObservers(unit, BluePoints + unit.UsedPoints);
}
}
/// <summary>
/// Starts the battle. Closes the form. disable all buttons.
/// </summary>
private async void DoStartBattle()
{
if (ListBlueUnits.Any() && ListRedUnits.Any())
{
IsBattleGoingOn = true;
foreach (var one in ListRedUnits)
{
one.StartAttack();
}
foreach (var one in ListBlueUnits)
{
one.StartAttack();
}
FormVisible = false;
}
else
{
var message = new MessageDialog("Each team must have at least one unit");
await message.ShowAsync();
}
}
private void OnNewBlueCavalryClicked()
{
ListBlueUnits.Add(HookCallBacks(UnitViewModel.GetNewCavalry(UnitTeam.Blue, BluePoints)));
}
private void OnNewBlueRangedClicked()
{
ListBlueUnits.Add(HookCallBacks(UnitViewModel.GetNewRanged(UnitTeam.Blue, BluePoints)));
}
