areadamagelooped.c

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class AreaDamageLooped : AreaDamageManager
{
    protected float             m_CurrentTime = 0.0;
    protected float             m_PreviousTime = 0.0;   
    protected float             m_AccumulatedTime = 0.0;    
    protected float             m_LoopInterval = 1.0;
    
    protected int               m_AmountOfLoops = 0;
    
    protected bool              m_LoopByObject = true;
    
    void AreaDamageLooped(EntityAI parent, bool loopByObject = true)
    {
        m_LoopByObject = loopByObject;
    }
    
    override void OnTriggerCreated()
    {
        super.OnTriggerCreated();
        
        m_PreviousTime = g_Game.GetTickTime();
        m_AccumulatedTime = 0.0;
    }
    
    override void SetLoopInterval( float time )
    {
        m_LoopInterval = time;
    }
    
    override void OnEnterServerEvent(TriggerInsider insider)
    {
        super.OnEnterServerEvent(insider);
        
        // Do direct damaging first time on entering
        if (m_LoopByObject)
            OnEvaluateDamageEx(insider, 1);
    }
    
    override void OnStayStartServerEvent(int nrOfInsiders)
    {
        super.OnStayStartServerEvent(nrOfInsiders);
        
        m_CurrentTime = g_Game.GetTickTime();       
        m_AccumulatedTime += m_CurrentTime - m_PreviousTime;        
        m_PreviousTime = m_CurrentTime;
        
        m_AmountOfLoops = m_AccumulatedTime / m_LoopInterval;
    }
    
    override void OnStayServerEvent(TriggerInsider insider, float deltaTime)
    {
        super.OnStayServerEvent(insider, deltaTime);
        
        // As we are using the Ex variant, we can put the logic in CalculateDamageScale
        OnEvaluateDamageEx(insider, deltaTime);
    }
    
    override void OnStayFinishServerEvent()
    {
        super.OnStayFinishServerEvent();
        
        m_AccumulatedTime -= m_AmountOfLoops * m_LoopInterval;
    }
    
    // TODO: EMH: OnLeaveServerEvent -> perform the remaining buffered damage to be done?
    
    override protected float CalculateDamageScale(TriggerInsider insider, float deltaTime)
    {   
        // If we want the LoopInterval to be dependant on the Object, we will need their lastDamaged time
        if (m_LoopByObject)
        {
            float lastDamaged = 0;
            
            AreaDamageTriggerInsider dInsider;
            if ( CastTo( dInsider, insider ) )
                lastDamaged = dInsider.lastDamaged;
            
            // First time it is damaged, do full damage
            if (lastDamaged == 0)
                return 1;
            
            // This way, in case the server lags, it will scale the damage to catch up if necessary
            // We want to wait until it is at least above 1, to not spam the network with hit messages
            float damageCoeff = (m_CurrentTime - lastDamaged) / m_LoopInterval;
            if ( damageCoeff >= 1 )
                return damageCoeff;
            
            return 0;
        }
        else
        {
            return m_AmountOfLoops;
        }
    }
}