SCR_RotationInteriaManualCameraComponent.c

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//#define INERTIA_DEBUG


[BaseContainerProps(), SCR_BaseManualCameraComponentTitle()]
class SCR_RotationInertiaManualCameraComponent : SCR_BaseManualCameraComponent
{
    protected static const float INERTIA_THRESHOLD = 0.0002; //--- Squared value
    
    [Attribute(defvalue: "0.03", desc: "Inertia strength. Larger values mean more inertia.")]
    private float m_fInertiaStrength;
    
    private vector m_vRotDelta;
    
    //------------------------------------------------------------------------------------------------
    override void EOnCameraFrame(SCR_ManualCameraParam param)
    {
        //--- Terminate when target rotation was achieved
        if (!param.isManualInput && m_vRotDelta.LengthSq() < INERTIA_THRESHOLD) return;
        
        m_vRotDelta = vector.Lerp(m_vRotDelta, param.rotDelta, Math.Min(param.timeSlice * m_fInertiaStrength, 1));
        
        #ifdef INERTIA_DEBUG
            DbgUI.Begin("KEK", 0, 0);
            DbgUI.Text("Yaw Before");
            DbgUI.PlotLive("YawBefore", 500, 100, param.rotDelta[0], 0.01, 100, ARGBF(1, 0.25, 0.25, 0.25));
            DbgUI.Text("Yaw After");
            DbgUI.PlotLive("YawAfter", 500, 100, m_vRotDelta[0], 0.01, 100, ARGBF(1, 1, 1, 1));
            DbgUI.Text("Pitch Before");
            DbgUI.PlotLive("PitchBefore", 500, 100, param.rotDelta[1], 0.01, 100, ARGBF(1, 0.25, 0.25, 0.25));
            DbgUI.Text("Pitch After");
            DbgUI.PlotLive("PitchAfter", 500, 100, m_vRotDelta[1], 0.01, 100, ARGBF(1, 1, 1, 1));
            DbgUI.End();
        #endif
        
        param.rotDelta = m_vRotDelta;
        param.isDirty = true;
    }
 
    //------------------------------------------------------------------------------------------------
    override bool EOnCameraInit()
    {
        m_fInertiaStrength = 1 / Math.Max(m_fInertiaStrength, 0.001);
        return true;
    }
}