AttachBoneRotationTrackModifier.c

Go to the documentation of this file.

class AttachBoneRotationTrackModifier : CinematicTrackModifier
{
    [Attribute(defvalue:"", desc:"Entity we want be attached to")]
    string entityToAttach;
    
    [Attribute(defvalue:"", desc:"Bone we want be attached to")]
    string boneToAttach;
    
    vector transform[4];
    vector boneTransform[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 (boneToAttach != "") //attach to bone
        {
            Animation entityAnimation = entity.GetAnimation();
            
            if (!entityAnimation)
                return originalValue;
            
            TNodeId boneId = entityAnimation.GetBoneIndex(boneToAttach);
            
            if (boneId == -1)
                return originalValue;
            
            entityAnimation.GetBoneMatrix(boneId, boneTransform);
            Math3D.MatrixMultiply4(transform, boneTransform, transform);
            
            Math3D.AnglesToMatrix(originalValue, originalVector);
            Math3D.MatrixMultiply4(transform, originalVector, transform);
            
            return  Math3D.MatrixToAngles(transform);
        }
        
        return originalValue;
    }
};