static void Prefix(AIUtil __instance, AbstractActor unit, AttackType attackType, List <Weapon> weaponList,
ICombatant target, Vector3 attackPosition, Vector3 targetPosition, bool useRevengeBonus,
AbstractActor unitForBVContext)
{
Mech attackingMech = unit as Mech;
AbstractActor targetActor = target as AbstractActor;
Mech targetMech = target as Mech;
Mod.AILog.Info?.Write("AITUIL_EDFA - entered.");
if (attackingMech == null || targetActor == null)
{
return; // Nothing to do
}
if (attackType == AttackType.Shooting || attackType == AttackType.None || attackType == AttackType.Count)
{
return; // nothing to do
}
try
{
Mod.AILog.Info?.Write($"=== Calculating expectedDamage for {attackingMech.DistinctId()} melee attack " +
$"from position: {attackPosition} against target: {target.DistinctId()} at position: {targetPosition}");
Mod.AILog.Info?.Write($" useRevengeBonus: {useRevengeBonus}");
Mod.AILog.Info?.Write($" --- weaponList:");
if (weaponList != null)
{
foreach (Weapon weapon in weaponList)
{
Mod.AILog.Info?.Write($" {weapon?.UIName}");
}
}
bool modifyAttack = false;
MeleeAttack meleeAttack = null;
Weapon meleeWeapon = null;
bool isCharge = false;
bool isMelee = false;
if (attackType == AttackType.Melee && attackingMech?.Pathing?.GetMeleeDestsForTarget(targetActor)?.Count > 0)
{
Mod.AILog.Info?.Write($"Modifying {attackingMech.DistinctId()}'s melee attack damage for utility");
// Create melee options
MeleeState meleeState = ModState.AddorUpdateMeleeState(attackingMech, attackPosition, targetActor);
if (meleeState != null)
{
meleeAttack = meleeState.GetHighestDamageAttackForUI();
ModState.AddOrUpdateSelectedAttack(attackingMech, meleeAttack);
if (meleeAttack is ChargeAttack)
{
isCharge = true;
}
meleeWeapon = attackingMech.MeleeWeapon;
modifyAttack = true;
isMelee = true;
}
}
bool isDFA = false;
if (attackType == AttackType.DeathFromAbove && attackingMech?.JumpPathing?.GetDFADestsForTarget(targetActor)?.Count > 0)
{
Mod.AILog.Info?.Write($"Modifying {attackingMech.DistinctId()}'s DFA attack damage for utility");
// Create melee options
MeleeState meleeState = ModState.AddorUpdateMeleeState(attackingMech, attackPosition, targetActor);
if (meleeState != null)
{
meleeAttack = meleeState.DFA;
ModState.AddOrUpdateSelectedAttack(attackingMech, meleeAttack);
meleeWeapon = attackingMech.DFAWeapon;
modifyAttack = true;
isDFA = true;
}
}
// No pathing dests for melee or DFA - skip
if (!isMelee && !isDFA)
{
return;
}
if (modifyAttack && meleeAttack == null || !meleeAttack.IsValid)
{
Mod.AILog.Info?.Write($"Failed to find a valid melee state, marking melee weapons as 1 damage.");
meleeWeapon.StatCollection.Set <float>(ModStats.HBS_Weapon_DamagePerShot, 0);
meleeWeapon.StatCollection.Set <float>(ModStats.HBS_Weapon_Instability, 0);
return;
}
if (modifyAttack && meleeAttack != null && meleeAttack.IsValid)
{
Mod.AILog.Info?.Write($"Evaluating utility against state: {meleeAttack.Label}");
// Set the DFA weapon's damage to our expected damage
float totalDamage = meleeAttack.TargetDamageClusters.Sum();
Mod.AILog.Info?.Write($" - totalDamage: {totalDamage}");
// Check to see if the attack will unsteady a target
float evasionBreakUtility = 0f;
if (targetMech != null && targetMech.EvasivePipsCurrent > 0 &&
(meleeAttack.OnTargetMechHitForceUnsteady || AttackHelper.WillUnsteadyTarget(meleeAttack.TargetInstability, targetMech))
)
{
// Target will lose their evasion pips
evasionBreakUtility = targetMech.EvasivePipsCurrent * Mod.Config.Melee.AI.EvasionPipRemovedUtility;
Mod.AILog.Info?.Write($" Adding {evasionBreakUtility} virtual damage to EV from " +
$"evasivePips: {targetMech.EvasivePipsCurrent} x bonusDamagePerPip: {Mod.Config.Melee.AI.EvasionPipRemovedUtility}");
}
float knockdownUtility = 0f;
if (targetMech != null && targetMech.pilot != null &&
AttackHelper.WillKnockdownTarget(meleeAttack.TargetInstability, targetMech, meleeAttack.OnTargetMechHitForceUnsteady))
{
float centerTorsoArmorAndStructure = targetMech.GetMaxArmor(ArmorLocation.CenterTorso) + targetMech.GetMaxStructure(ChassisLocations.CenterTorso);
if (AttackHelper.WillInjuriesKillTarget(targetMech, 1))
{
knockdownUtility = centerTorsoArmorAndStructure * Mod.Config.Melee.AI.PilotInjuryMultiUtility;
Mod.AILog.Info?.Write($" Adding {knockdownUtility} virtual damage to EV from " +
$"centerTorsoArmorAndStructure: {centerTorsoArmorAndStructure} x injuryMultiUtility: {Mod.Config.Melee.AI.PilotInjuryMultiUtility}");
}
else
{
// Attack won't kill, so only apply a fraction equal to the totalHeath
float injuryFraction = (targetMech.pilot.TotalHealth - 1) - (targetMech.pilot.Injuries + 1);
knockdownUtility = (centerTorsoArmorAndStructure * Mod.Config.Melee.AI.PilotInjuryMultiUtility) / injuryFraction;
Mod.AILog.Info?.Write($" Adding {knockdownUtility} virtual damage to EV from " +
$"(centerTorsoArmorAndStructure: {centerTorsoArmorAndStructure} x injuryMultiUtility: {Mod.Config.Melee.AI.PilotInjuryMultiUtility}) " +
$"/ injuryFraction: {injuryFraction}");
}
}
// Check to see how much evasion loss the attacker will have
// use current pips + any pips gained from movement (charge)
float distance = (attackPosition + unit.CurrentPosition).magnitude;
int newPips = unit.GetEvasivePipsResult(distance, isDFA, isCharge, true);
int normedNewPips = (unit.EvasivePipsCurrent + newPips) > unit.StatCollection.GetValue <int>("MaxEvasivePips") ?
unit.StatCollection.GetValue <int>("MaxEvasivePips") : (unit.EvasivePipsCurrent + newPips);
float selfEvasionDamage = 0f;
if (meleeAttack.UnsteadyAttackerOnHit || meleeAttack.UnsteadyAttackerOnMiss)
{
// TODO: Should evaluate chance to hit, and apply these partial damage based upon success chances
selfEvasionDamage = normedNewPips * Mod.Config.Melee.AI.EvasionPipLostUtility;
Mod.AILog.Info?.Write($" Reducing virtual damage by {selfEvasionDamage} due to potential loss of {normedNewPips} pips.");
}
// Check to see how much damage the attacker will take
float selfDamage = 0f;
if (meleeAttack.AttackerDamageClusters.Length > 0)
{
selfDamage = meleeAttack.AttackerDamageClusters.Sum();
Mod.AILog.Info?.Write($" Reducing virtual damage by {selfDamage} due to attacker damage on attack.");
}
float virtualDamage = totalDamage + evasionBreakUtility + knockdownUtility - selfEvasionDamage - selfDamage;
Mod.AILog.Info?.Write($" Virtual damage calculated as {virtualDamage} = " +
$"totalDamage: {totalDamage} + evasionBreakUtility: {evasionBreakUtility} + knockdownUtility: {knockdownUtility}" +
$" - selfDamage: {selfDamage} - selfEvasionDamage: {selfEvasionDamage}");
Mod.AILog.Info?.Write($"Setting weapon: {meleeWeapon.UIName} to virtual damage: {virtualDamage} for EV calculation");
meleeWeapon.StatCollection.Set <float>(ModStats.HBS_Weapon_DamagePerShot, virtualDamage);
meleeWeapon.StatCollection.Set <float>(ModStats.HBS_Weapon_Instability, 0);
Mod.AILog.Info?.Write($"=== Done modifying attack!");
}
else
{
Mod.AILog.Debug?.Write($"Attack is not melee {modifyAttack}, or melee state is invalid or null. I assume the normal AI will prevent action.");
}
}
catch (Exception e)
{
Mod.AILog.Error?.Write(e, $"Failed to calculate melee damage for {unit.DistinctId()} using attackType {attackType} due to error!");
}
}