AttachPositionTrackModifier.c

Go to the documentation of this file.

class AttachPositionTrackModifier : CinematicTrackModifier
{
    [Attribute(defvalue:"", desc:"Entity we want be attached to")]
    string entityToAttach;
    
    [Attribute(defvalue:"false", desc:"If we want to rotate with parent")]
    bool applyRotation;
    
    vector transform[4];
    vector originalVector[4];
    ChimeraWorld chimeraWorld;
    
    override void OnInit(World world)
    {
        chimeraWorld = world;
    }
    
    override vector OnApplyModifierVector(float time, vector originalValue)
    {
        
        IEntity entity =  chimeraWorld.FindEntityByName(entityToAttach);
        
        if (!entity)
            return originalValue;
        
        entity.GetTransform(transform);
        
        if (applyRotation)
        {
            originalVector = { "1 0 0", "0 1 0", "0 0 1", originalValue};
            Math3D.MatrixMultiply4(transform, originalVector, transform);
            
            return transform[3];
        }
        else
        {
            return transform[3] + originalValue;
        }
    }
};