/// <summary>
/// Called when a unit is to enter/attack this tower.
/// See documenation for full explaination and metrics.
/// If unit is friendly, stationed units is increased.
/// Raises ChangedFaction and AttackedByUnit events.
/// </summary>
/// <param name="unit">Unit.</param>
public void UnitEntered(UnitBehavior unit)
{
if (unit.Faction == Faction)
{
// Friendly units are transfered to this towers group
unit.TransferGroup(stationedGroup);
unit.gameObject.SetActive(false);
}
else
{
// Hostile units damage this towers stationed unit group
int strength = FactionController.GetAttackStrengthForFaction(unit.Faction);
stationedGroup.Damage(strength);
// Change tower's faction if last unit was killed
if (stationedGroup.Empty)
{
TowerController.ConvertTowerToFaction(this, unit.Faction);
if (ChangedFaction != null)
{
ChangedFaction(Faction);
SetGraphic();
}
}
unit.ImpactKill();
if (AttackedByUnit != null)
{
AttackedByUnit(unit);
}
}
}
/// <summary>
/// Returns the Number of Units Needed to successfully defend a tower
/// </summary>
public static int NumUnitsNeededToDefend(TowerBehavior defendingTower, int attackingFaction, int numAttackingUnits)
{
int strength = FactionController.GetAttackStrengthForFaction(attackingFaction);
int unitsNeeded = 0;
int endurance = defendingTower.StationedGroup.Endurance;
for (int i = 0; i < numAttackingUnits; i++)
{
endurance -= strength;
if (endurance <= 0)
{
unitsNeeded++;
endurance += defendingTower.CurrentStats.Endurance;
}
}
return(unitsNeeded + 1);
}
/// <summary>
/// Returns True if the attacking Units will take over a tower
/// </summary>
public static bool SimulateAttack(int numUnitsAttacking, TowerBehavior destination, int AttackingFaction, out int UnitsLeft)
{
UnitsLeft = numUnitsAttacking;
//how many stationUnits does the destination have
int defendingUnits = destination.StationedUnits;
//what is the current endurance of the destination tower
int currentEndurance = destination.StationedGroup.Endurance;
//strength of soldiers
int strength = FactionController.GetAttackStrengthForFaction(AttackingFaction);
//Simulate attacking
for (int i = 0; i < numUnitsAttacking; i++)
{
currentEndurance -= strength;
UnitsLeft--;
if (currentEndurance <= 0)
{
currentEndurance += destination.CurrentStats.Endurance;
defendingUnits--;
}
//if the player is out of units stop the loop
if (defendingUnits <= 0)
{
break;
}
}
//if the there are defending Units leftover, we have failed the attack
if (defendingUnits > 0)
{
return(false);
}
//we have succeeded the attack in defending Units is 0 or less
return(true);
}