UT2k4Assault.ASCriticalObjectiveVolume

//=============================================================================
// ASCriticalObjectiveVolume
//=============================================================================
// Created by Laurent Delayen
// © 2003, Epic Games, Inc.  All Rights Reserved
//=============================================================================

class ASCriticalObjectiveVolume extends Volume;

var     Info        CheckTimer;
var()   class<Pawn> ConstraintPawnClass;

function PostBeginPlay()
{
    // skip associatedactor setup..
    super(Brush).PostBeginPlay();
}

function Destroyed()
{
    if ( CheckTimer != None )
    {
        CheckTimer.Destroy();
        CheckTimer = None;
    }

    super.Destroyed();
}

function bool IsCriticalPawn( Pawn P )
{
    if ( !ClassIsChildOf(P.Class, ConstraintPawnClass) )
        return false;

    if ( P.Health > 0 && P.Controller != None 
        && P.Controller.GetTeamNum() == 1 - Level.Game.GetDefenderNum() )
        return true;

    return false;
}


auto state Safe
{
    event Touch( Actor Other )
    {
        local GameObjective GO;

        if ( Other != None && Other.IsA('Pawn') && IsCriticalPawn( Pawn(Other) ) )
        {
            // Attackers have breached the 'Critical' objective volume (!!!)
            // Set Objectives to 'critical'
            for ( GO=TeamGame(Level.Game).Teams[0].AI.Objectives; GO!=None; GO=GO.NextObjective )
            {
                if ( GO.MyBaseVolume == Self && GO.IsActive() )
                {
                    GO.SetCriticalStatus( true );
                    if ( GO.DefenseSquad != None )
                        GO.DefenseSquad.Team.AI.CriticalObjectiveWarning(GO, Pawn(Other));
                }
            }

            GotoState('Critical');
        }
    }
}

function bool IsStillCritical()
{
    local Pawn          P;
    local GameObjective GO;

    foreach TouchingActors(class'Pawn', P)
        if ( IsCriticalPawn( P ) )
        {
            for ( GO=TeamGame(Level.Game).Teams[0].AI.Objectives; GO!=None; GO=GO.NextObjective )
            {
                if ( GO.MyBaseVolume == Self && GO.IsActive() && (GO.DefenseSquad != None) )
                    GO.DefenseSquad.Team.AI.CriticalObjectiveWarning(GO, P);
            }
            return true;
        }
            
    // Turn active objectives to 'safe'
    for ( GO=TeamGame(Level.Game).Teams[0].AI.Objectives; GO!=None; GO=GO.NextObjective )
    {
        if ( GO.MyBaseVolume == Self )
            GO.SetCriticalStatus( false );
    }

    return false;
}

state Critical
{
    function TimerPop(VolumeTimer T)
    {
        if ( !IsStillCritical() )
            GotoState('Safe');
    }

    function BeginState()
    {
        if ( CheckTimer == None )
            CheckTimer = Spawn(class'VolumeTimer', Self);
    }
}

/*  Objective has been disabled... check if the volume should keep on monitoring breaching... 
    ( several objectives might be sharing the same volume ) */
state ObjectiveDisabled
{
    function BeginState()
    {
        local GameObjective GO;
        local bool          bStillCritical;

        for ( GO=TeamGame(Level.Game).Teams[0].AI.Objectives; GO!=None; GO=GO.NextObjective )
        {
            if ( GO.MyBaseVolume == Self && !GO.bDisabled )
                bStillCritical = true;
        }

        // if there is at least another active objective... keep on monitoring!
        if ( bStillCritical )
        {
            GotoState('Critical');
            return;
        }

        GotoState('Disabled');
    }
}

state Disabled
{
    function BeginState()
    {
        if ( CheckTimer != None )
        {
            CheckTimer.Destroy();
            CheckTimer = None;
        }
    }
}

function Reset()
{
    super.Reset();
    GotoState('Safe');
}

defaultproperties
{
     ConstraintPawnClass=Class'Engine.Pawn'
}