ActionCondition()

override bool ActionCondition	(	PlayerBase	player,
		ActionTarget	target,
		ItemBase	item )

См. определение в файле ActionDetach.c строка 38

    {
        ItemBase tgt_item = ItemBase.Cast( target.GetObject() );
        EntityAI tgt_parent = EntityAI.Cast( target.GetParent() );
        EntityAI tgt_entity = EntityAI.Cast( target.GetObject() );
 
        if ( !tgt_item || !tgt_entity || !tgt_parent )
            return false;
 
        if ( !tgt_parent || !tgt_item.IsItemBase() || !tgt_item.IsTakeable() || tgt_item.IsBeingPlaced() )
            return false;
 
        if ( player.GetCommand_Vehicle() )
            return false;
 
        if ( player.GetInventory().CanAddEntityIntoHands(tgt_entity) ) //&& !player.GetInventory().CanAddEntityIntoInventory(tgt_entity) )
        {
            if ( tgt_entity.GetHierarchyRootPlayer() != player )
            {
                if ( tgt_entity.CanDetachAttachment( tgt_parent ) && tgt_parent.CanReleaseAttachment( tgt_entity ) )
                    return true;
            }       
        }
 
        return false;
    }

Перекрестные ссылки ActionTarget() и ItemBase::IsTakeable().