public void StartExecution()
{
if (Attacker == null)
{
throw new InvalidOperationException("Cannot execute while Attacker is null");
}
if (LocationToAttack == null)
{
throw new InvalidOperationException("Cannot execute while LocationToAttack is null");
}
Status = CommandStatus.Running;
var bestDefender = AttackOrderLogic.GetNextAttackTargetOnCell(LocationToAttack);
if (bestDefender == null)
{
Status = CommandStatus.Failed;
}
else if (CombatType == CombatType.Melee)
{
if (CombatExecuter.CanPerformMeleeAttack(Attacker, bestDefender))
{
CombatExecuter.PerformMeleeAttack(
Attacker, bestDefender, () => Status = CommandStatus.Succeeded, () => Status = CommandStatus.Failed
);
}
else
{
Status = CommandStatus.Failed;
}
}
else
{
if (CombatExecuter.CanPerformRangedAttack(Attacker, bestDefender))
{
CombatExecuter.PerformRangedAttack(Attacker, bestDefender);
Status = CommandStatus.Succeeded;
}
else
{
Status = CommandStatus.Failed;
}
}
}
private void OnCellPointerEntered(IHexCell cell)
{
if (!IsDragging)
{
return;
}
IUnit attackCandidate = AttackOrderLogic.GetNextAttackTargetOnCell(cell);
if (attackCandidate == SelectedUnit)
{
return;
}
if (attackCandidate != null && CombatExecuter.CanPerformMeleeAttack(SelectedUnit, attackCandidate))
{
SetUnitToAttack(attackCandidate);
return;
}
var cityOnCell = CityLocationCanon.GetPossessionsOfOwner(cell).FirstOrDefault();
if (cityOnCell != null && CombatExecuter.CanPerformMeleeAttack(SelectedUnit, cityOnCell.CombatFacade))
{
SetCityToAttack(cityOnCell);
return;
}
var unitLocation = UnitPositionCanon.GetOwnerOfPossession(SelectedUnit);
if (unitLocation != cell && UnitPositionCanon.CanChangeOwnerOfPossession(SelectedUnit, cell))
{
SetProspectiveTravelGoal(unitLocation, cell);
}
else
{
Clear();
}
}