public static bool TryAssignAttackUnit(bool replace, Unit owner,
PositionedObjectList <Unit> allUnits, float aggroRadius)
{
bool didAssignAttack = false;
float aggroSquared = aggroRadius * aggroRadius;
bool isTargetAnEnemyUnit = !owner.UnitData.IsEnemy;
var foundUnit = allUnits.FirstOrDefault(item =>
(item.Position - owner.Position).LengthSquared() < aggroSquared &&
item.UnitData.IsEnemy == isTargetAnEnemyUnit &&
item.CurrentHealth > 0
);
if (foundUnit != null)
{
owner.AssignAttackGoal(foundUnit, replace);
didAssignAttack = true;
}
return(didAssignAttack);
}