public static DamageResult RollFTDamage(IDiceUtility roller, int numberOfDice, int drm = 0, int targetScreenRating = 0, bool dealPenetrating = false, int recursionDepth = 0)
{
var indent = string.Empty.PadRight(4 * recursionDepth);
var penetrationCount = 0;
var damageResult = new DamageResult();
var diceRolled = roller.RollStandardDice(numberOfDice);
var rolls = diceRolled.ToList().OrderByDescending(v => v);
/*
* Console.WriteLine(
* $@"{indent}[Rolled {numberOfDice}] dice
* with DRM {drm}, screen {targetScreenRating}{(dealPenetrating ? ", penetrating" : ", non-penetrating")}
* : {string.Join(",", rolls)}");
*/
foreach (var roll in rolls)
{
var dieDamage = CountSuccessesOnRoll(roll, drm, targetScreenRating);
damageResult.StandardRolls.Add(roll);
if (dieDamage > 0)
{
// Console.WriteLine($"{indent}Roll of {roll} deals {dieDamage} damage");
damageResult.Standard += dieDamage;
if (roll >= Constants.MinRollForDoubleSuccess && dealPenetrating)
{
penetrationCount++;
}
}
// Exit early if dieDamage == 0, since dice are sorted in descending order?
}
if (penetrationCount > 0)
{
// Console.WriteLine($"{indent}Rolling {penetrationCount} penetrating dice: [");
// On a "natural" max roll, deal recursive, shield-ignoring, DRM-ignoring, penetrating followup damage
var penetrationFollowup = FullThrustDieRolls.RollFTDamage(roller, penetrationCount, 0, 0, true, recursionDepth + 1);
damageResult.Penetrating += penetrationFollowup.Standard;
// Penetrating damage could ITSELF penetrate, but it all rolls up to just one count of penetrating damage
// TODO: revisit this; what about the case of multiple layers of armor + multiple penetrating recursions?
damageResult.Penetrating += penetrationFollowup.Penetrating;
damageResult.PenetratingRolls.AddRange(penetrationFollowup.StandardRolls);
damageResult.PenetratingRolls.AddRange(penetrationFollowup.PenetratingRolls);
}
return(damageResult);
}
public void TestPenetratingDamageRollup_Screen1_DRM_Zero()
{
IDiceUtility roller = this.services.GetService <IDiceUtility>();
FullThrustDieRolls.RollFTSuccesses(roller, 1, out IEnumerable <int> rolls);
var units = new List <GameUnit>();
var f = GameEngineTestUtilities.GenerateTestFormation(1, "Test Formation", ref units);
var fu = f.Units.First();
var u = units[0];
var result = f.RollManeuverSpeedAndEvasion(this.services, f.Orders.First(), f.FormationId, 1, speedDRM: 0, evasionDRM: 0);
// Console.WriteLine($"{u.Name} rolls {result.SpeedSuccesses} for Speed and {result.EvasionSuccesses} for Evasion.");
// Console.WriteLine("Testing penetrating damage versus Screen Rating 2...");
var damageResult = FullThrustDieRolls
.RollFTDamage(
new DiceNotationUtility(),
numberOfDice: 20,
drm: 0,
targetScreenRating: 1,
dealPenetrating: true);
// Console.WriteLine($"Dealt a total of {damageResult.Standard} standard damage and {damageResult.Penetrating} penetrating damage.");
Assert.IsNotNull(damageResult);
int natural6sOnInitialRoll = damageResult.StandardRolls.Count(r => r == 6);
int natural5sOnInitialRoll = damageResult.StandardRolls.Count(r => r == 5);
int natural4sOnInitialRoll = damageResult.StandardRolls.Count(r => r == 4);
int natural6sOnPenetratingRolls = damageResult.PenetratingRolls.Count(r => r == 6);
int natural5sOnPenetratingRolls = damageResult.PenetratingRolls.Count(r => r == 5);
int natural4sOnPenetratingRolls = damageResult.PenetratingRolls.Count(r => r == 4);
// Since ScreenRating is 1 and DRM is 0, 6s hit for 2 and penetrate; 5s hit for 1; and 4s miss.
int expectedStandardDamage = (2 * natural6sOnInitialRoll) + natural5sOnInitialRoll + (0 * natural4sOnInitialRoll);
// Penetrating damage ignores screens and DRM
int expectedPenetratingDamage = (2 * natural6sOnPenetratingRolls) + natural5sOnPenetratingRolls + natural4sOnPenetratingRolls;
Assert.AreEqual(expectedStandardDamage, damageResult.Standard);
// Penetration dice all come from 6s in the original roll, OR ELSE from rerolls in the penetration pool
Assert.AreEqual(damageResult.PenetratingRolls.Count - natural6sOnPenetratingRolls, natural6sOnInitialRoll);
// Penetration dice are unaffected by DRM or screens
Assert.AreEqual(expectedPenetratingDamage, damageResult.Penetrating);
}
public void TestPenetratingDamageRollup_Screen2_DRM_Minus_One()
{
IDiceUtility roller = this.services.GetService <IDiceUtility>();
FullThrustDieRolls.RollFTSuccesses(roller, 1, out IEnumerable <int> rolls);
var units = new List <GameUnit>();
var f = GameEngineTestUtilities.GenerateTestFormation(1, "Test Formation", ref units);
var fu = f.Units.First();
var u = units[0];
var result = f.RollManeuverSpeedAndEvasion(services: this.services, formationOrders: f.Orders.First(), currentVolley: 1, formationId: f.FormationId, speedDRM: 0, evasionDRM: 0);
// Console.WriteLine($"{u.Name} rolls {result.SpeedSuccesses} for Speed and {result.EvasionSuccesses} for Evasion.");
// Console.WriteLine("Testing penetrating damage versus Screen Rating 2...");
var damageResult = FullThrustDieRolls
.RollFTDamage(
new DiceNotationUtility(),
numberOfDice: 20,
drm: -1,
targetScreenRating: 2,
dealPenetrating: true);
// Console.WriteLine($"Dealt a total of {damageResult.Standard} standard damage and {damageResult.Penetrating} penetrating damage.");
Assert.IsNotNull(damageResult);
// Since ScreenRating is 2 and DRM is -1, only 6's hit (and they all penetrate).
int natural6sOnInitialRoll = damageResult.StandardRolls.Count(r => r == 6);
int natural6sOnPenetratingRolls = damageResult.PenetratingRolls.Count(r => r == 6);
int natural4sAnd5sOnPenetratingRolls = damageResult.PenetratingRolls.Count(r => r == 4 || r == 5);
Assert.AreEqual(natural6sOnInitialRoll, damageResult.Standard);
Assert.IsTrue(damageResult.PenetratingRolls.Count >= natural6sOnInitialRoll);
// Penetration dice all come from 6s in the original roll, OR ELSE from rerolls in the penetration pool
Assert.AreEqual(damageResult.PenetratingRolls.Count - natural6sOnPenetratingRolls, natural6sOnInitialRoll);
// Penetration dice are unaffected by DRM or screens
var penetrationDamageCalc = (2 * natural6sOnPenetratingRolls) + natural4sAnd5sOnPenetratingRolls;
Assert.AreEqual(penetrationDamageCalc, damageResult.Penetrating);
}
public static int RollFTSuccesses(IDiceUtility roller, int numberOfDice, out IEnumerable <int> rolls, int drm = 0, int difficultyLevel = 0)
{
if (numberOfDice == 0)
{
rolls = new List <int>();
return(0); // No successes possible if no dice rolled!
}
int successes = 0;
string expression = $"{numberOfDice}D6";
rolls = roller.RollStandardDice(numberOfDice).OrderByDescending(i => i);
foreach (int roll in rolls)
{
successes += CountSuccessesOnRoll(roll, drm, difficultyLevel);
}
return(successes);
}
