AreaDamageComponentRaycasted.c

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class AreaDamageComponentRaycasted : AreaDamageComponent
{
    // Defined in local space of the trigger
    ref array<vector>               m_RaycastSources;
    vector                          m_RaycastEndOffset;
    
    ref array<ref RaycastRVResult>  m_RaycastCache;
    int                             m_RaycastCachedIndex;
    
    void AreaDamageComponentRaycasted(AreaDamageManager parent)
    {
        m_RaycastSources = new array<vector>;
        m_RaycastEndOffset = "0 0.5 0";
        
        m_RaycastCache = new array<ref RaycastRVResult>;
        m_RaycastCachedIndex = -1;
    }
    
    override void OnTriggerCreated()
    {
        super.OnTriggerCreated();
        
        ClearCache();
    }
 
    void SetRaycastSources( array<string> raycast_sources )
    {
        m_RaycastSources.Clear();
        
        // convert Array of string to array of Vectors
        int nrOfSources = raycast_sources.Count();
        for ( int v = 0; v < nrOfSources; ++v)
        {
            m_RaycastSources.Insert(raycast_sources[v].ToVector());
        }
    }
    
    void SetRaycastSourcesVector( array<vector> raycast_sources )
    {
        m_RaycastSources = raycast_sources;
    }
    
    void SetRaycastLength(float length)
    {
        m_RaycastEndOffset = Vector(0, length, 0);
    }
    
    override void OnStayFinishServerEvent()
    {
        super.OnStayFinishServerEvent();
        
        ClearCache();
    }
    
    override protected AreaDamageComponentData GetAreaDamageComponentData(Object object)
    {
        AreaDamageComponentData data = new AreaDamageComponentData;
        data.Hitzone = GetRaycastedHitZone(object);
        
        return data;
    }
    
    protected void ClearCache()
    {
        m_RaycastCache.Clear();
        m_RaycastCachedIndex = -1;
    }
    
    protected string GetRaycastedHitZone(Object victim)
    {
        int nrOfCachedResults = m_RaycastSources.Count();
        for ( int c = 0; c < nrOfCachedResults; ++c )
        {
            RaycastRVResult cachedRes = m_RaycastCache[c];
            if ( cachedRes.obj == victim )
                return victim.GetDamageZoneNameByComponentIndex(cachedRes.component);
        }
        
        int nrOfSources = m_RaycastSources.Count();
        array<ref RaycastRVResult> victims = new array<ref RaycastRVResult>;
        
        string hitzone = "";
        
        AreaDamageTriggerBase trigger = m_Parent.GetTrigger();
        
        RaycastRVParams params = new RaycastRVParams( vector.Zero, vector.Zero, trigger, 0.0 );
        params.type = ObjIntersectIFire;
        params.flags = CollisionFlags.ONLYDYNAMIC;
        
        for ( int i = m_RaycastCachedIndex + 1; i < nrOfSources; ++i )
        {
            m_RaycastCachedIndex = i;
            
            params.begPos = trigger.ModelToWorld( m_RaycastSources[i] );
            params.endPos = params.begPos + m_RaycastEndOffset;
            
            if ( DayZPhysics.RaycastRVProxy(params, victims) )
            {           
                for ( int j = 0; j < victims.Count(); ++j )
                {
                    RaycastRVResult res = victims[j];
                    
                    if (res.obj == victim)
                        hitzone = victim.GetDamageZoneNameByComponentIndex(res.component);
                    
                    if (res.obj.IsAnyInherited(m_DamageableTypes))
                        m_RaycastCache.Insert(res);
                }
                
                if ( !( hitzone == "") )
                    return hitzone;
                
                victims.Clear();
            }
        }
        
        return GetFallbackHitZone(victim);
    }
    
    protected string GetFallbackHitZone(Object victim)
    {
        Error(string.Format("[WARNING] :: [%1] :: [AreaDamageComponentRaycasted] :: No proper HitZone found for damaging %2, using fallback.",
            m_Parent, Object.GetDebugName(victim)));
        
        // Fallbacks, currently are implemented assuming that foot/leg damagezones would be desired to damage
        if ( victim.IsInherited(DayZPlayer) || victim.IsInherited(DayZInfected) )
        {
            // Damage random leg since we don't know what part of player's body was caught in the trap.
            if ( Math.RandomIntInclusive(0, 1) == 1 )
                return "RightFoot";
            return "LeftFoot";
        }
        else
        {                   
            array<string> damageZones = new array<string>;      
            victim.GetDamageZones(damageZones);
            
            int nrOfDmgZones = damageZones.Count();
            
            if (nrOfDmgZones > 0)
            {
                for (int z = 0; z < nrOfDmgZones; ++z)
                {
                    if ( damageZones[z].Contains("Foot") || damageZones[z].Contains("Leg") )
                        return damageZones[z];
                }
                
                return damageZones.GetRandomElement();
            }
            else
                return "";
        }
    }
}