I am new to unity 3D I want to create a building, then the user can add new features at runtime.
What I need is a GUI with the available items from a folder. Then when pressing an item in the GUI, you can create an instance of the item.
Hovering over the building, the item may be placed in specific locations. for instance, user may not place a door on the roof. Once user hovering over an appropriate location, he is allowed to release and place the texture or furniture.
How can I achieve that? Please Help. Thanks Advance