/*//////////////////////////////////////////////////////////////////////////////
 Script: nw_ch_ac2
 Programmer: Philos
////////////////////////////////////////////////////////////////////////////////
  Associate(Summons, Familiars, Companions) OnPerception script when not in combat;
  There are 4 types of perception - Heard, Inaudible, Seen, Vanished.
  Only one type will ever be true in an event trigger.
  The order of trigger is Heard/Seen and Inaudible/Vanished.
  There are two states of percepion Heard and Seen.
  These states can be set at the same time thus a heard event can see the creature.
  Fires when ever one of these states changes from TRUE to FALSE or FALSE to TRUE.
*///////////////////////////////////////////////////////////////////////////////
#include "0i_associates"
void main()
{
    object oCreature = OBJECT_SELF;
    object oLastPerceived = GetLastPerceived();
    if(AI_DEBUG)
    {
        if(GetLastPerceptionHeard ())
        {
            ai_Debug("nw_ch_ac2", "21", GetName(oCreature) + " heard " +
                     GetName(GetLastPerceived()) + " Distance: " +
                     FloatToString(GetDistanceBetween(GetLastPerceived(), oCreature), 0, 2) +
                     " Seen: " + IntToString(GetObjectSeen(oLastPerceived, oCreature)) + ".");
        }
        if(GetLastPerceptionSeen ())
        {
            ai_Debug("nw_ch_ac2", "29", GetName(oCreature) + " sees " +
                     GetName(GetLastPerceived()) + " Distance: " +
                     FloatToString(GetDistanceBetween(GetLastPerceived(), oCreature), 0, 2) + ".");
        }
        if(GetLastPerceptionVanished ())
        {
            ai_Debug("nw_ch_ac2", "35", GetName(oCreature) + " lost sight of " +
                     GetName(GetLastPerceived()) + ".");
        }
    }
    // We do nothing on Inaudibles so drop out early!
    if(GetLastPerceptionInaudible())
    {
        ai_Debug("nw_ch_ac2", "42", GetName(oCreature) + " lost sound of " +
                 GetName(GetLastPerceived()) + ".");
        return;
    }
    if(AI_DEBUG) ai_Debug("nw_ch_ac2", "46", "Dead? " + IntToString(GetIsDead(oLastPerceived)) +
                 " Enemy? " + IntToString(GetIsEnemy(oLastPerceived, oCreature)));
    if(ai_Disabled(oCreature)) return;
    if(GetIsDead(oLastPerceived) || !GetIsEnemy(oLastPerceived, oCreature)) return;
    // All code below assumes the perceived creature is an enemy and is alive!
    // **************************** ENEMY HEARD ********************************
    if(GetLastPerceptionHeard())
    {
        // Since Heard is run before Seen, but the values are set at the same
        // time we can skip heard checks on heard & seen creatures!
        if(GetObjectSeen(oLastPerceived, oCreature))
        {
            // If the creature we are perceiving was our invisible creature then
            // remove that they are invisible.
            if(oLastPerceived == GetLocalObject(oCreature, AI_IS_INVISIBLE))
            {
                DeleteLocalObject(oCreature, AI_IS_INVISIBLE);
            }
            ai_AssociateEvaluateNewThreat(oCreature, oLastPerceived, AI_I_SEE_AN_ENEMY);
        }
        else ai_AssociateEvaluateNewThreat(oCreature, oLastPerceived, AI_I_HEARD_AN_ENEMY);
        return;
    }
    // **************************** ENEMY SEEN *********************************
    if(GetLastPerceptionSeen())
    {
        // If the creature we are perceiving was our invisible creature then
        // remove that they are invisible.
        if(oLastPerceived == GetLocalObject(oCreature, AI_IS_INVISIBLE))
        {
            DeleteLocalObject(oCreature, AI_IS_INVISIBLE);
        }
        ai_AssociateEvaluateNewThreat(oCreature, oLastPerceived, AI_I_SEE_AN_ENEMY);
        return;
    }
    // **************************** ENEMY VANISHED *****************************
    if(GetLastPerceptionVanished())
    {
        // Lets keep a mental note of the invisible creature.
        SetLocalObject(oCreature, AI_IS_INVISIBLE, oLastPerceived);
        if(AI_DEBUG) ai_Debug("nw_ch_ac2", "86", " We saw " + GetName(oLastPerceived) + " disappear!");
        if(ai_GetIsBusy(oCreature)) return;
        // If in combat check to see if our target disappeared.
        // If they have and we are not in melee with them then reevaluate combat
        // since we lost our target.
        if(ai_GetIsInCombat(oCreature))
        {
            if(AI_DEBUG) ai_Debug("nw_ch_ac2", "93", "Is this our target? " +
                         IntToString(ai_GetAttackedTarget(oCreature, TRUE, TRUE) == oLastPerceived));
            if(ai_GetAttackedTarget(oCreature, TRUE, TRUE) == oLastPerceived)
            {
                ai_DoAssociateCombatRound(oCreature);
            }
            return;
        }
        // If they are not invisible then that means they left our perception
        // range and we need follow them.
        if(ai_CanIAttack(oCreature)) ActionMoveToObject(oLastPerceived, TRUE, AI_RANGE_CLOSE);
    }
    // **************************** ENEMY INAUDIBLE*****************************
    // Not used.
}