// WARNING: Replaces the existing logic
// isStationary here represents the attacker, not the target
public static bool Prefix(AbstractActor unit, bool isStationary, ref BehaviorTreeResults __result)
{
// If there is no unit, exit immediately
if (unit == null)
{
__result = new BehaviorTreeResults(BehaviorNodeState.Failure);
return(false);
}
// If there are no enemies, exit immediately
if (unit.BehaviorTree.enemyUnits.Count == 0)
{
Mod.Log.Info?.Write("No important enemy units, skipping decision making.");
__result = new BehaviorTreeResults(BehaviorNodeState.Failure);
return(false);
}
// Initialize decision data caches
AEHelper.InitializeAttackOrderDecisionData(unit);
Mod.Log.Debug?.Write($" == Evaluating attack from unit: {CombatantUtils.Label(unit)} at pos: {unit.CurrentPosition} against {unit.BehaviorTree.enemyUnits.Count} enemies.");
BehaviorTreeResults behaviorTreeResults = null;
AbstractActor designatedTarget = AEHelper.FilterEnemyUnitsToDesignatedTarget(unit.team as AITeam, unit.lance, unit.BehaviorTree.enemyUnits);
float desTargDamage = 0f;
float desTargFirepowerReduction = 0f;
if (designatedTarget != null)
{
desTargDamage = AOHelper.MakeAttackOrderForTarget(unit, designatedTarget, isStationary, out behaviorTreeResults);
desTargFirepowerReduction = AIAttackEvaluator.EvaluateFirepowerReductionFromAttack(unit, unit.CurrentPosition, designatedTarget, designatedTarget.CurrentPosition, designatedTarget.CurrentRotation, unit.Weapons, MeleeAttackType.NotSet);
Mod.Log.Debug?.Write($" DesignatedTarget: {CombatantUtils.Label(designatedTarget)} will suffer: {desTargDamage} damage and lose: {desTargFirepowerReduction} firepower from attack.");
}
else
{
Mod.Log.Debug?.Write(" No designated target identified.");
}
float behavior1 = AIHelper.GetBehaviorVariableValue(unit.BehaviorTree, BehaviorVariableName.Float_OpportunityFireExceedsDesignatedTargetByPercentage).FloatVal;
float opportunityFireThreshold = 1f + (behavior1 / 100f);
float behavior2 = AIHelper.GetBehaviorVariableValue(unit.BehaviorTree, BehaviorVariableName.Float_OpportunityFireExceedsDesignatedTargetFirepowerTakeawayByPercentage).FloatVal;
float opportunityFireTakeawayThreshold = 1f + (behavior2 / 100f);
Mod.Log.Info?.Write($" Opportunity Fire damageThreshold: {opportunityFireThreshold} takeawayThreshold: {opportunityFireTakeawayThreshold}");
// Walk through every alive enemy, and see if a better shot presents itself.
for (int j = 0; j < unit.BehaviorTree.enemyUnits.Count; j++)
{
ICombatant combatant = unit.BehaviorTree.enemyUnits[j];
if (combatant == designatedTarget || combatant.IsDead)
{
continue;
}
Mod.Log.Debug?.Write($" Checking opportunity fire against target: {CombatantUtils.Label(combatant)}");
AbstractActor opportunityFireTarget = combatant as AbstractActor;
BehaviorTreeResults oppTargAttackOrder;
// Should MAOFT take a param for opportunity attacks to simplify?
float oppTargDamage = AOHelper.MakeAttackOrderForTarget(unit, combatant, isStationary, out oppTargAttackOrder);
float oppTargFirepowerReduction = AIAttackEvaluator.EvaluateFirepowerReductionFromAttack(unit, unit.CurrentPosition, combatant, combatant.CurrentPosition, combatant.CurrentRotation, unit.Weapons, MeleeAttackType.NotSet);
Mod.Log.Debug?.Write($" Target will suffer: {oppTargDamage} with firepower reduction: {oppTargFirepowerReduction}");
// TODO: Was where opportunity cost from evasion strip was added to target damage.
// Reintroduce utility damage to this calculation
bool exceedsOpportunityFireThreshold = oppTargDamage > desTargDamage * opportunityFireThreshold;
Mod.Log.Debug?.Write($" Comparing damage - opportunity: {oppTargDamage} > designated: {designatedTarget} * threshold: {opportunityFireThreshold}");
bool exceedsFirepowerReductionThreshold = oppTargFirepowerReduction > desTargFirepowerReduction * opportunityFireTakeawayThreshold;
Mod.Log.Debug?.Write($" Comparing firepower reduction - opportunity: {oppTargFirepowerReduction} vs. designated: {desTargFirepowerReduction} * threshold: {1f + opportunityFireTakeawayThreshold}");
// TODO: Short circuit here - takes the first result, instead of the best result. Should we fix this?
if (oppTargAttackOrder != null && oppTargAttackOrder.orderInfo != null &&
(exceedsOpportunityFireThreshold || exceedsFirepowerReductionThreshold))
{
Mod.Log.Debug?.Write(" Taking opportunity fire attack, instead of attacking designated target.");
__result = oppTargAttackOrder;
return(false);
}
}
if (behaviorTreeResults != null && behaviorTreeResults.orderInfo != null)
{
Mod.Log.Debug?.Write("Successfuly calculated attack order");
unit.BehaviorTree.AddMessageToDebugContext(AIDebugContext.Shoot, "attacking designated target. Success");
__result = behaviorTreeResults;
return(false);
}
Mod.Log.Debug?.Write("Could not calculate reasonable attacks. Skipping node.");
__result = new BehaviorTreeResults(BehaviorNodeState.Failure);
return(false);
}