humaninventorywithfsm.c

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class HumanInventoryWithFSM : HumanInventory
{
    protected ref HandFSM m_FSM;  
    protected ref HandStateBase m_Empty;
    protected ref HandStateBase m_Equipped;
 
    void HumanInventoryWithFSM ()
    {
        m_FSM = new HandFSM();
    }
    
    void CreateStableStates ()
    {
        // stable states are created only if they do not exist already (for example created by derived class like DayZPlayerInventory)
        // @NOTE: this cannot be done in constructor, as there is NO owner set yet. GetManOwner() will therefore return NULL.
        if (!m_Empty)
            m_Empty = new HandStateEmpty(GetManOwner());
        if (!m_Equipped)
            m_Equipped = new HandStateEquipped(GetManOwner());
    }
 
    override void Init ()
    {
        // setup state machine
        if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("[hndfsm] Initializing Human Inventory FSM");
        
        // basic states
        CreateStableStates();
        
        // events
        HandEventBase __T__ = new HandEventTake;
        HandEventBase __D__ = new HandEventDrop;
        HandEventBase __Tw_ = new HandEventThrow;
        HandEventBase __M__ = new HandEventMoveTo;
        HandEventBase __W__ = new HandEventSwap;
        HandEventBase __F__ = new HandEventForceSwap;
        HandEventBase __X__ = new HandEventDestroy;
        HandEventBase __Xd_ = new HandEventDestroyed;
        HandEventBase __R__ = new HandEventDestroyAndReplaceWithNew;
        HandEventBase __Re_ = new HandEventDestroyAndReplaceWithNewElsewhere;
        HandEventBase __Rh_ = new HandEventDestroyElsewhereAndReplaceWithNewInHands;
        HandEventBase __Rd_ = new HandEventReplaced;
        HandEventBase __Cd_ = new HandEventCreated;
        HandEventBase _fin_ = new HandEventHumanCommandActionFinished;
        HandEventBase _abt_ = new HandEventHumanCommandActionAborted;
 
 
        HandReplacingItemInHands replacing = new HandReplacingItemInHands(GetManOwner());
        HandReplacingItemInHands replacingElsewhere = new HandReplacingItemInHands(GetManOwner());
        HandReplacingItemElsewhereWithNewInHands replacingElsewhere3 = new HandReplacingItemElsewhereWithNewInHands(GetManOwner());
 
        // setup transitions
        m_FSM.AddTransition(new HandTransition( m_Empty   , __T__,  m_Equipped, new HandActionTake, new HandGuardHasItemInEvent(GetManOwner())));
        m_FSM.AddTransition(new HandTransition( m_Empty   , __Cd_,  m_Equipped, new HandActionCreated, new HandGuardHasItemInEvent(GetManOwner())));
 
        m_FSM.AddTransition(new HandTransition(m_Equipped, __D__,    m_Empty, new HandActionDrop, null));
        m_FSM.AddTransition(new HandTransition(m_Equipped, __Tw_,    m_Empty, new HandActionThrow, null));
        m_FSM.AddTransition(new HandTransition(m_Equipped, __M__,    m_Empty, new HandActionMoveTo, new HandGuardAnd(new HandGuardHasItemInHands(GetManOwner()), new HandGuardCanMove(GetManOwner()))));
        m_FSM.AddTransition(new HandTransition(m_Equipped, __X__,    m_Empty, new HandActionDestroy, new HandGuardHasItemInHands(GetManOwner())));
        m_FSM.AddTransition(new HandTransition(m_Equipped, __Xd_,    m_Empty, new HandActionDestroyed, new HandGuardHasDestroyedItemInHands(GetManOwner())));
        m_FSM.AddTransition(new HandTransition(m_Equipped, __Xd_, m_Equipped, new HandActionDestroyed, new HandGuardNot(new HandGuardHasDestroyedItemInHands(GetManOwner()))));
 
        m_FSM.AddTransition(new HandTransition(m_Equipped, __R__, replacing));
        m_FSM.AddTransition(new HandTransition(replacing, _fin_, m_Equipped));
            replacing.AddTransition(new HandTransition(replacing.m_Replacing, _abt_, m_Equipped));
 
        m_FSM.AddTransition(new HandTransition(m_Equipped, __Re_, replacingElsewhere));
        m_FSM.AddTransition(new HandTransition(replacingElsewhere, _fin_, m_Empty));
            replacingElsewhere.AddTransition(new HandTransition(replacingElsewhere.m_Replacing, _abt_, m_Equipped));
        
        m_FSM.AddTransition(new HandTransition(m_Empty, __Rh_, replacingElsewhere3));
        m_FSM.AddTransition(new HandTransition(replacingElsewhere3, _fin_, m_Equipped));
            replacingElsewhere3.AddTransition(new HandTransition(replacingElsewhere3.m_Replacing, _abt_, m_Empty));
        
        m_FSM.AddTransition(new HandTransition(m_Equipped, __Rd_, m_Equipped, new HandActionReplaced, null));
        m_FSM.AddTransition(new HandTransition(m_Equipped, __W__, m_Equipped, new HandActionSwap, new HandGuardAnd(new HandGuardHasItemInHands(GetManOwner()), new HandGuardCanSwap(GetManOwner()))));
        m_FSM.AddTransition(new HandTransition(m_Equipped, __F__, m_Equipped, new HandActionForceSwap, new HandGuardAnd(new HandGuardHasItemInHands(GetManOwner()), new HandGuardCanForceSwap(GetManOwner()))));
 
        // start FSM
        m_FSM.SetInitialState(m_Empty);
        m_FSM.Start();
        
        super.Init();
    }
 
    bool CanProcessHandEvents () { return m_FSM && m_FSM.IsRunning(); }

    override bool ProcessHandEvent (HandEventBase e)
    {
        //SyncRemote(e);
        if (m_FSM.ProcessEvent(e) == ProcessEventResult.FSM_OK)
        {
            #ifdef ENABLE_LOGGING
            if ( LogManager.IsInventoryHFSMLogEnable() )
            {
                Debug.InventoryHFSMLog("STS = " + GetManOwner().GetSimulationTimeStamp() , e.ToString(), "ProcessHandEvent", e.m_Player.ToString() );
            }
            #endif
            return true;
        }
        else
        {
            //if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("FSM refused to process event (no transition): src=" + GetCurrentState().ToString() + " event=" + e.ToString());
            return false;
        }
    }
    
    bool ProcessHandAbortEvent (HandEventBase e)
    {
        //SyncRemote(e);
        ProcessEventResult aa;
        m_FSM.ProcessAbortEvent(e, aa);
        if (aa == ProcessEventResult.FSM_OK)
        {
            if (LogManager.IsInventoryHFSMLogEnable()) hndDebugSpam("[hndfsm]  STS = " + GetManOwner().GetSimulationTimeStamp() + " Processed event e=" + e.ToString());
            return true;
        }
        else
        {
            //if (LogManager.IsInventoryHFSMLogEnable()) hndDebugPrint("FSM refused to process event (no transition): src=" + GetCurrentState().ToString() + " event=" + e.ToString());
            return false;
        }
    }
    
        
    void CheckFSMState()
    {
        if (GetEntityInHands())
        {
            if (!m_FSM.IsRunning() || GetCurrentStateID() == HandStateID.Empty) //forcing when not running or in stable state only
                m_FSM.SetCurrentState(m_Equipped);
        }
        else
        {
            if (!m_FSM.IsRunning() || GetCurrentStateID() == HandStateID.Equipped) //forcing when not running or in stable state only
                m_FSM.SetCurrentState(m_Empty);
        }
    }
 
    override bool OnStoreLoad (ParamsReadContext ctx, int version)
    {
        if ( !super.OnStoreLoad(ctx, version) )
            return false;
        
        //@TODO
        //m_FSM.OnStoreLoad(ctx, version);
 
        return true;
    }
 
    override void OnStoreSave (ParamsWriteContext ctx)
    {
        super.OnStoreSave(ctx);
    //@TODO
        //m_FSM.OnStoreSave(ctx, version);
    }

    int GetCurrentStateID () { return m_FSM.GetCurrentStateID(); }
    
    bool IsIdle () { return m_FSM.GetCurrentState().IsIdle(); }

    void NetSyncCurrentStateID (int id)
    {
        m_FSM.NetSyncCurrentStateID(id);
    }
};