trapbase.c

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enum SoundTypeTrap
{
    ACTIVATING          = 5,
}
 
class TrapBase extends ItemBase
{
    #ifdef SERVER
    protected const int SPAWN_FLAGS                 = ECE_CREATEPHYSICS;
    #else
    protected const int SPAWN_FLAGS                 = ECE_LOCAL;
    #endif
    
    protected const int DAMAGE_TRIGGER_MINE         = 75;
    protected const float UPDATE_TIMER_INTERVAL     = 0.05;
 
    float   m_InitWaitTime;         //After this time after deployment, the trap is activated
    bool m_NeedActivation;          //If activation of trap is needed
    float m_DefectRate;             //Added damage after trap activation
    float m_DamagePlayers;          //How much damage player gets when caught
    float m_DamageOthers;           //How much damage player gets when caught
 
    bool m_AddActivationDefect;     // Damage trap after activation
    bool m_AddDeactivationDefect;   // Damage trap after deactivation
    protected bool m_IsActive;      // True means that the trap is ready to detonate
    protected bool m_IsInProgress;
 
    protected bool m_Disarmed = false; 
 
    bool m_WasActivatedOrDeactivated;
 
    string m_AnimationPhaseGrounded;
    string m_AnimationPhaseSet;
    string m_AnimationPhaseTriggered;
 
    string m_InfoSetup;
    string m_InfoDeactivated;
    string m_InfoDamageManipulation;
    string m_InfoDamage;
    string m_InfoActivationTime;
 
    protected ref Timer m_Timer;
    protected ref Timer m_UpdateTimer;
    protected TrapTrigger m_TrapTrigger;
    
    protected ref array<int> m_ClothingDmg;
 
    void TrapBase()
    {
        m_IsInProgress = false;
        m_NeedActivation = true;
        m_InitWaitTime = 5;             //After this time after deployment, the trap is activated
        m_DefectRate = 15;              //Added damage after trap activation
        m_DamagePlayers = 25;           //How much damage player gets when caught
        m_DamageOthers = 100;           //How much damage others gets when caught
        
        m_AddActivationDefect = false;
        m_AddDeactivationDefect = false;
 
        m_WasActivatedOrDeactivated = false;
 
        m_AnimationPhaseGrounded = "";
        m_AnimationPhaseSet = "";
        m_AnimationPhaseTriggered = "";
        
        m_InfoSetup =               "#STR_TrapBase0";
        m_InfoDeactivated =         "#STR_TrapBase1";
        m_InfoDamageManipulation =  "#STR_TrapBase2";
        m_InfoDamage =              "#STR_TrapBase3";
        m_InfoActivationTime =      "#STR_TrapBase4" + m_InitWaitTime.ToString() + "#STR_TrapBase5";
        
        m_UpdateTimer               = new Timer();  
        
        RegisterNetSyncVariableBool("m_IsActive");
        RegisterNetSyncVariableBool("m_IsInProgress");
    }
    
    void OnUpdate(EntityAI victim);
    
    TrapTrigger GetTrapTrigger()
    {
        return m_TrapTrigger;
    }
    
    override void OnVariablesSynchronized()
    {
        super.OnVariablesSynchronized();
        
        if (GetGame().IsMultiplayer())
        {
            if (m_IsActive && !m_IsInProgress)
                SetActive();
            
            if (m_IsInProgress && !m_IsActive)
                StartActivate(null);
        }
    }
    
    override void EEDelete(EntityAI parent)
    {
        super.EEDelete(parent);
 
        if (GetGame() && m_TrapTrigger)
        {
            GetGame().ObjectDelete(m_TrapTrigger);
            m_TrapTrigger = null;
        }
    }
 
    override void OnStoreSave(ParamsWriteContext ctx)
    {
        super.OnStoreSave(ctx);
        
        ctx.Write(m_IsActive);
        ctx.Write(m_IsInProgress);
    }
    
    //----------------------------------------------------------------
    override bool OnStoreLoad(ParamsReadContext ctx, int version)
    {   
        if ( !super.OnStoreLoad(ctx, version) )
            return false;
        
        bool b_is_active = false;
        if ( !ctx.Read( b_is_active ) )
            b_is_active = false;
        
        bool b_is_in_progress = false;
        if ( !ctx.Read( b_is_in_progress ) )
            b_is_in_progress = false;
        
        if ( b_is_active )
        {
            SetActive();
        }
        
        if (b_is_in_progress &&  !b_is_active)
        {
            StartActivate(null);
        }
 
        return true;
    }
    
    bool IsActive()
    {
        return m_IsActive && m_IsInProgress == false && GetHierarchyRootPlayer() == null;
    }
 
    bool IsInactive()
    {
        return !IsActive() && m_IsInProgress == false && GetHierarchyRootPlayer() == null;
    }
 
    // trap cannot be taken when is activated
    override bool IsTakeable()
    {
        if ( m_IsInProgress == false && !IsActive() )
        {
            return true;
        }
        
        return false;
    }
 
    bool IsActivable()
    {
        return !IsActive() && GetHierarchyRootPlayer() == null && GetHierarchyParent() == null && m_IsInProgress == false && !IsRuined() && m_NeedActivation;
    }
 
    bool IsPlaceable()
    {
        if ( GetHierarchyRootPlayer() != null && GetHierarchyRootPlayer().GetHumanInventory().GetEntityInHands() == this )
        {
            PlayerBase player = PlayerBase.Cast( GetHierarchyRootPlayer() );
            
            vector player_pos = player.GetPosition();
            vector aim_pos = player.GetAimPosition();
                            
            if ( vector.DistanceSq( player_pos, aim_pos ) <= ( Math.SqrFloat( 1.5 ) ) )
            {
                return IsPlaceableAtPosition( aim_pos );
            }
        }
        
        return false;
    }
 
    bool IsPlaceableAtPosition( vector position )
    {
        if ( position[1] < g_Game.SurfaceGetSeaLevelMax() + 0.03 )
        {
            return false;
        }
        else if ( GetGame().SurfaceIsPond( position[0], position[2] ) )
        {
            return false;
        }
        
        return true;
    }
    
    void Disarm()
    {
        SetInactive(false);
        RefreshState();
        GetGame().RPCSingleParam(this, ERPCs.RPC_TRAP_DISARM, null, true);
 
        OnDisarm();
    }
    
    void OnDisarm();
    
    void SnapOnObject(EntityAI victim)
    {
        if ( GetGame().IsServer() )
        {
            if ( m_Timer )
            {
                m_Timer.Stop();
            }
            
            RefreshState();
 
            if (m_DamagePlayers > 0)
            {
                if (victim)
                {
                    if ( victim.IsInherited(SurvivorBase))
                    {
                        victim.DecreaseHealth("", "", m_DamagePlayers);
                    }
                    else if (victim.IsInherited(DayZCreatureAI))
                    {
                        victim.DecreaseHealth("", "", m_DamageOthers);
                    }
                    else if (victim.IsInherited(ItemBase))
                    {
                        ItemBase victim_item = ItemBase.Cast(victim);
                        float damage_coef = 1;
                        
                        if (victim_item.HasQuantity() && victim_item.GetQuantityMax() != 0 && victim_item.GetQuantity() > 0)
                        {
                            damage_coef = victim_item.GetQuantityMax() / victim_item.GetQuantity(); // Lower quantity increases damage exposure
                        }
                        
                        if (damage_coef > 0)
                        {
                            int item_size_x = 1;
                            int item_size_y = 1;
                            GetGame().GetInventoryItemSize(victim_item, item_size_x, item_size_y);
                            
                            float add_damage = 300 * damage_coef / Math.Clamp(item_size_x * item_size_y, 1, int.MAX);
                            victim_item.DecreaseHealth("", "", add_damage);
                        }
                    }
                }
            }
        
            Synch(victim);
        }
 
        OnSteppedOn(victim);
    }
    
    void RemoveFromObject(EntityAI victim)
    {
        OnSteppedOut(victim);
    }
    
    void OnSteppedOn(EntityAI victim)
    {
        SetInactive(false);
    }
    
    void OnSteppedOut(EntityAI victim);     
 
    // Synchronizes states
    protected void Synch(EntityAI victim)
    {
        if (GetGame().IsServer())
        {
            if (victim && !victim.GetAllowDamage())
                return;
 
            Param1<EntityAI> p = new Param1<EntityAI>(victim);
            GetGame().RPCSingleParam(this, ERPCs.RPC_TRAP_VICTIM, p, true);
        }
        
    }   
    
    // On server -> client synchronization
    override void OnRPC(PlayerIdentity sender, int rpc_type, ParamsReadContext ctx)
    {
        super.OnRPC(sender, rpc_type, ctx);
        
        if ( !GetGame().IsDedicatedServer() )
        {
            switch (rpc_type)
            {
                case ERPCs.RPC_TRAP_VICTIM:
                    Param1<EntityAI> victim = new Param1<EntityAI>(null);
                    
                    if (ctx.Read(victim))
                    {
                        if (victim.param1)
                            SnapOnObject(victim.param1);
                    }
                    
                    break;
                
                case ERPCs.RPC_TRAP_DISARM:
                    OnDisarm();
                    break;
                
                case SoundTypeTrap.ACTIVATING:
            
                    Param1<bool> p = new Param1<bool>(false);
                    
                    bool isActivating = false;
                    if (ctx.Read(p))
                        isActivating = p.param1;
                                
                    break;
            }
        }
    }
    
    void RefreshState()
    {
        if ( !m_WasActivatedOrDeactivated )
        {
            return;
        }
        
        if ( GetGame().IsServer() )
        {
            // item is owned by player
            if ( GetHierarchyRootPlayer() != NULL && m_AnimationPhaseGrounded != "" )
            {
                SetAnimationPhase( m_AnimationPhaseSet, 1 );
                if ( m_AnimationPhaseTriggered != m_AnimationPhaseGrounded ) 
                {
                    SetAnimationPhase( m_AnimationPhaseTriggered, 1 );
                }
                SetAnimationPhase( m_AnimationPhaseGrounded, 0 );
            }
            // item is set active
            else if ( IsActive() )
            {
                if ( m_AnimationPhaseGrounded != "" )
                {
                    SetAnimationPhase( m_AnimationPhaseGrounded, 1 );
                }
                if ( m_AnimationPhaseSet != "" && m_AnimationPhaseTriggered != "" )
                {
                    SetAnimationPhase( m_AnimationPhaseTriggered, 1 );
                    SetAnimationPhase( m_AnimationPhaseSet, 0 );
                }
            }
            // item is inactive and not owned by player (on the ground)
            else if ( IsInactive() )
            {
                if ( m_AnimationPhaseGrounded != "" &&  m_AnimationPhaseTriggered != m_AnimationPhaseGrounded )
                {
                    SetAnimationPhase( m_AnimationPhaseGrounded, 1 );
                }
                if ( m_AnimationPhaseSet != "" && m_AnimationPhaseTriggered != "" )
                {
                    SetAnimationPhase( m_AnimationPhaseSet, 1 );
                    SetAnimationPhase( m_AnimationPhaseTriggered, 0 );
                }
            }
        }
    }
 
    void SetupTrap()
    { 
        if (GetGame().IsServer())
        {
            if (GetHierarchyRootPlayer() && GetHierarchyRootPlayer().CanDropEntity(this))
                SetupTrapPlayer(PlayerBase.Cast(GetHierarchyRootPlayer()));
        }
    }
 
    void SetupTrapPlayer( PlayerBase player, bool set_position = true )
    { 
        if (GetGame().IsServer())
        {
            if (set_position)
            {
                player.LocalDropEntity(this);
                
                vector trapPos = player.GetDirection() * 1.5;
                trapPos[1] = 0;
                SetPosition(player.GetPosition() + trapPos);
            }
                    
            if (m_NeedActivation == false)
                SetActive();
        }
    }
 
    void AddDefect()
    {
        if ( GetGame().IsServer() )
        {
            DecreaseHealth( "", "", m_DefectRate );
        }
    }
    
    void SetActive()
    {
        m_WasActivatedOrDeactivated = true;
        
        m_IsInProgress = false;
        m_IsActive = true;
    
        if (m_AddActivationDefect)
        {
            AddDefect();
        }
            
        if (GetGame().IsServer())
        {
            CreateTrigger();
            RefreshState();
            SetSynchDirty();
        }
        
        OnActivate();
    }
 
    void OnActivate();
 
    void StartActivate(PlayerBase player)
    {
        if (GetGame().IsServer())
        {
            m_Timer = new Timer(CALL_CATEGORY_SYSTEM);
            HideSelection("safety_pin");
            
            if (m_InitWaitTime > 0)
            {
                m_IsInProgress = true;
                m_Timer.Run(m_InitWaitTime, this, "SetActive");
            
                SetSynchDirty();
            }
            else
                SetActive();
        }
    }
    
    void StartDeactivate(PlayerBase player);
 
    void SetInactive(bool stop_timer = true)
    {
        m_WasActivatedOrDeactivated = true;
        
        m_IsActive = false;
        if (m_Timer && stop_timer)
            m_Timer.Stop();
        
        if (m_AddDeactivationDefect)
            AddDefect();
 
        SetSynchDirty();        
        DeleteTrigger();
        RefreshState();
    }
    
    void CreateTrigger()
    {
        if (Class.CastTo(m_TrapTrigger, GetGame().CreateObjectEx("TrapTrigger", GetPosition(), SPAWN_FLAGS)))
        {
            vector mins = "-0.01 -0.05 -0.01";
            vector maxs = "0.01 0.5 0.01";
            m_TrapTrigger.SetOrientation(GetOrientation());
            m_TrapTrigger.SetExtents(mins, maxs);
            m_TrapTrigger.SetParentObject(this);
            GetGame().GetCallQueue(CALL_CATEGORY_SYSTEM).Call(DeferredEnableTrigger);
        }
    }
    
    void DeleteTrigger()
    {
        if (m_TrapTrigger)
        {   
            m_TrapTrigger.SetParentObject(null);
            m_TrapTrigger.DeleteSafe();
        }
    }
    
    void DeferredEnableTrigger()
    {
        if (m_TrapTrigger)
            m_TrapTrigger.SetEnabled();
    }
 
    override void OnItemLocationChanged(EntityAI old_owner, EntityAI new_owner) 
    {
        super.OnItemLocationChanged(old_owner, new_owner);
        
        if (GetGame().IsServer())
        {
            RefreshState();
 
            // TAKE ACTIVE TRAP FROM VICINITY 
            if (old_owner == NULL && new_owner != NULL && IsActive())
            {
                // TAKE INTO HANDS
                if ( new_owner.IsPlayer() )
                {
                    SnapOnObject(new_owner);
                }
                else if (new_owner.GetHierarchyRootPlayer())
                {
                    SnapOnObject(new_owner.GetHierarchyRootPlayer());
                }
            }
        }
        
    }
 
    override void EEItemAttached(EntityAI item, string slot_name)
    {
        super.EEItemAttached(item, slot_name);
        
        if (GetGame().IsServer())
            RefreshState();
    }   
    
    override void EEItemDetached(EntityAI item, string slot_name)
    {
        super.EEItemDetached(item, slot_name);
        
        if (GetGame().IsServer())
            RefreshState();
    }
    
    override void OnPlacementComplete(Man player, vector position = "0 0 0", vector orientation = "0 0 0")
    {
        super.OnPlacementComplete(player, position, orientation);
        
        if (GetGame().IsServer())
        {
            SetOrientation(orientation);
            SetPosition(position);
            PlaceOnSurface();
            SetSynchDirty();
        }
    }
    
    override bool CanPutInCargo( EntityAI parent )
    {
        if ( !super.CanPutInCargo(parent) )
        {
            return false;
        }
 
        return IsTakeable();
    }
    
    override bool CanPutIntoHands( EntityAI parent ) 
    {
        if ( !super.CanPutIntoHands( parent ) )
        {
            return false;
        }
 
        return IsTakeable();
    }
 
    override bool CanRemoveFromHands( EntityAI parent ) 
    {
        return IsTakeable();
    }
    
    override bool CanBePlaced( Man player, vector position )
    {
        return IsPlaceableAtPosition( position );
    }
    
    bool CanBeClapped()
    {
        return true;
    }
    
    //Set if trap can be disarmed using trap-specific action
    bool CanBeDisarmed()
    {
        return false;
    }
    
    void SetDisarmed( bool disarmed )
    {
        m_Disarmed = disarmed;
    }
    
    bool GetDisarmed()
    {
        return m_Disarmed;
    }
    
    //================================================================
    // ADVANCED PLACEMENT
    //================================================================
    
    override void SetActions()
    {
        super.SetActions();
        
        AddAction(ActionActivateTrap);
    }
    
    // HELPERS
    protected EntityAI GetClosestCarWheel(EntityAI victim)
    {
        vector trapPosXZ = GetPosition();
        trapPosXZ[1] = 0;
 
        GameInventory inv = victim.GetInventory();
        for (int i = 0; i < inv.AttachmentCount(); i++)
        {
            EntityAI wheelEntity = inv.GetAttachmentFromIndex(i);
            if (wheelEntity && wheelEntity.Type() == CarWheel_Ruined)
            {
                continue;
            }
            
            int slotId;
            string slotName;        
            wheelEntity.GetInventory().GetCurrentAttachmentSlotInfo(slotId, slotName);
            slotName.ToLower();
            if (slotName.Contains("spare"))
            {
                continue
            }
 
            if (wheelEntity && wheelEntity.IsInherited(CarWheel))
            {
                vector entPosXZ = wheelEntity.GetPosition();
                entPosXZ[1] = 0;
                if (vector.Distance(trapPosXZ, entPosXZ) < 1)
                {
                    return wheelEntity;
                }
            }
        }
        
        return null;
    }
    
    protected void DamageClothing(PlayerBase player)
    {
        //Array used to find all relevant information about currently equipped clothes
        array<ClothingBase> equippedClothes = new array<ClothingBase>;
 
        equippedClothes.Insert(ClothingBase.Cast(player.GetItemOnSlot("LEGS")));
        equippedClothes.Insert(ClothingBase.Cast(player.GetItemOnSlot("BACK")));
        equippedClothes.Insert(ClothingBase.Cast(player.GetItemOnSlot("VEST")));
        equippedClothes.Insert(ClothingBase.Cast(player.GetItemOnSlot("HeadGear")));
        equippedClothes.Insert(ClothingBase.Cast(player.GetItemOnSlot("Mask")));
        equippedClothes.Insert(ClothingBase.Cast(player.GetItemOnSlot("BODY")));
        equippedClothes.Insert(ClothingBase.Cast(player.GetItemOnSlot("FEET")));
        equippedClothes.Insert(ClothingBase.Cast(player.GetItemOnSlot("GLOVES")));
 
        //Damage all currently equipped clothes
        for (int i = 0; i < equippedClothes.Count(); i++)
        {
            //If no item is equipped on slot, slot is ignored
            if (equippedClothes[i] == null)
            {
                continue;
            }
 
            equippedClothes[i].DecreaseHealth(m_ClothingDmg[i], false);
        }
    }
    
    protected ref EffectSound   m_DeployLoopSound; //DEPRECATED in favor of m_DeployLoopSoundEx
    
    void PlayDeployLoopSound(); 
    void StopDeployLoopSound(); 
}