SCR_AITargetReaction.c

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//------------------------------------------------------------------------------------------------
// TARGET REACTION BASE
//------------------------------------------------------------------------------------------------
[BaseContainerProps()]
class SCR_AITargetReactionBase
{
    void PerformReaction(notnull SCR_AIUtilityComponent utility, notnull SCR_AIThreatSystem threatSystem, BaseTarget baseTarget, vector lastSeenPosition) {}
};
 
[BaseContainerProps()]
class SCR_AITargetReaction_SelectedTargetChangedBase
{
    void PerformReaction(notnull SCR_AIUtilityComponent utility, BaseTarget prevTarget, BaseTarget newTarget);
}
 
//------------------------------------------------------------------------------------------------
// TARGET REACTIONS
//------------------------------------------------------------------------------------------------
 
 
[BaseContainerProps()]
class SCR_AITargetReaction_Unknown : SCR_AITargetReactionBase
{
    override void PerformReaction(notnull SCR_AIUtilityComponent utility, notnull SCR_AIThreatSystem threatSystem, BaseTarget baseTarget, vector lastSeenPosition)
    {
        IEntity targetEntity = baseTarget.GetTargetEntity();
        if (targetEntity)
            utility.m_LookAction.LookAt(targetEntity, SCR_AILookAction.PRIO_UNKNOWN_TARGET, 2.0);
    }
};
 
[BaseContainerProps()]
class SCR_AITargetReaction_RetreatFromEnemy : SCR_AITargetReactionBase
{
    override void PerformReaction(notnull SCR_AIUtilityComponent utility, notnull SCR_AIThreatSystem threatSystem, BaseTarget baseTarget, vector lastSeenPosition)
    {
        if (!baseTarget)
            return;
        
        // Find if we already have a retreat action from that target
        utility.SetStateAllActionsOfType(SCR_AIRetreatFromTargetBehavior, EAIActionState.COMPLETED, true);
        
        SCR_AIRetreatFromTargetBehavior behavior = new SCR_AIRetreatFromTargetBehavior(utility, null, baseTarget);
        utility.AddAction(behavior);
    }
}
 
[BaseContainerProps()]
class SCR_AITargetReaction_SelectedTargetChanged : SCR_AITargetReaction_SelectedTargetChangedBase
{
    //--------------------------------------------------------------------------------------------------
    override void PerformReaction(notnull SCR_AIUtilityComponent utility, BaseTarget prevTarget, BaseTarget newTarget)
    {
        #ifdef AI_DEBUG
        AddDebugMessage(utility, string.Format("Prev Target: %1, New Target: %2", prevTarget, newTarget));
        #endif
        
        if (prevTarget)
        {
            ReportPreviousTarget(utility, prevTarget, newTarget);
        }
        
        utility.SetStateAllActionsOfType(SCR_AIAttackBehavior, EAIActionState.COMPLETED, true);
        
        if (newTarget)
        {
            utility.SetStateAllActionsOfType(SCR_AIRetreatFromTargetBehavior, EAIActionState.COMPLETED, true);
            CreateAttackActionForTarget(utility, newTarget, prevTarget);
            
            IEntity targetEntity = newTarget.GetTargetEntity();
            if (targetEntity)
                utility.m_LookAction.LookAt(targetEntity, SCR_AILookAction.PRIO_ENEMY_TARGET);
        }
    }
    
    //--------------------------------------------------------------------------------------------------
    protected void CreateAttackActionForTarget(notnull SCR_AIUtilityComponent utility, notnull BaseTarget target, BaseTarget prevTarget)
    {
        #ifdef AI_DEBUG
        AddDebugMessage(utility, "CreateAttackActionForTarget()");
        #endif
                
        IEntity targetEntity = target.GetTargetEntity();
        if (!targetEntity)
            return;
        
        // Create new attack behavior
        auto behavior = new SCR_AIAttackBehavior(utility, null, target, prevTarget);
        
        // AddAction must be used here, not AddActionIfMissing!
        utility.AddAction(behavior);
        
        // If passenger and not in turret, dismount vehicle
        if (!utility.m_AIInfo.HasUnitState(EUnitState.IN_TURRET))
            utility.WrapBehaviorOutsideOfVehicle(behavior);
    }
    
    //--------------------------------------------------------------------------------------------------
    protected void ReportPreviousTarget(notnull SCR_AIUtilityComponent utility, notnull BaseTarget prevTarget, BaseTarget newTarget)
    {
        #ifdef AI_DEBUG
        AddDebugMessage(utility, "ReportPreviousTarget()");
        #endif
        
        IEntity targetEntity = prevTarget.GetTargetEntity();
        ETargetCategory targetCategory = prevTarget.GetTargetCategory();
        DamageManagerComponent damageMgr = prevTarget.GetDamageManagerComponent();
        
        if (targetCategory == ETargetCategory.FRIENDLY)
        {
            #ifdef AI_DEBUG
            AddDebugMessage(utility, "  Target is now friendly");
            #endif
        }
        else if (!targetEntity)
        {
            #ifdef AI_DEBUG
            AddDebugMessage(utility, "  Target entity is null, not reporting");
            #endif
        }
        else if (prevTarget.IsDisarmed() || (damageMgr && damageMgr.IsDestroyed()))
        {
            // Target is destroyed or unconscious/disarmed (we pretend it's destroyed)
            #ifdef AI_DEBUG
            AddDebugMessage(utility, "  Target is destroyed or disarmed");
            #endif
            
            // Report target destroyed
            if (!utility.m_CommsHandler.CanBypass())
            {
                SCR_AITalkRequest rq = new SCR_AITalkRequest(ECommunicationType.REPORT_TARGET_DOWN, null, vector.Zero, 0, transmitIfNoReceivers: false, transmitIfPassenger: false, preset: SCR_EAITalkRequestPreset.IRRELEVANT_IMMEDIATE);
                utility.m_CommsHandler.AddRequest(rq);
            }
        }
        else if (!newTarget &&
            (prevTarget.GetTimeSinceSeen() > SCR_AICombatComponent.TARGET_MAX_LAST_SEEN) &&
            (prevTarget.GetUnitType() & utility.m_CombatComponent.GetUnitTypesCanAttack() != 0)) // We switched from this target not because we can't attack it any more
        {
            // We haven't seen the target for too long
            #ifdef AI_DEBUG
            AddDebugMessage(utility, string.Format("  Target is lost, time since seen: %1", prevTarget.GetTimeSinceSeen()));
            #endif
            
            // Report target lost
            if (!utility.m_CommsHandler.CanBypass())
            {
                SCR_AITalkRequest rq = new SCR_AITalkRequest(ECommunicationType.REPORT_TARGET_LOST, null, vector.Zero, 0, transmitIfNoReceivers: false, transmitIfPassenger: false, preset: SCR_EAITalkRequestPreset.IRRELEVANT_IMMEDIATE);
                utility.m_CommsHandler.AddRequest(rq);
            }               
        }
    }
    
    #ifdef AI_DEBUG
    protected void AddDebugMessage(notnull SCR_AIUtilityComponent utility, string str, LogLevel logLevel = LogLevel.NORMAL)
    {
        SCR_AIInfoBaseComponent infoComp = utility.m_AIInfo;
        infoComp.AddDebugMessage("SCR_AITargetReaction_SelectedTargetChanged: " + str, msgType: EAIDebugMsgType.COMBAT, logLevel);
    }
    #endif
}