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A standard trait found in all known RTS games is the ability for the player to select a character or object. I understand that this engine has the Pick function which more or less performs the act of selecting an object, but I am not sure how one should draw a circle on the terrain on which the object resides to show that the object is selected. I booted up my copy of Warcraft III as well as some other RTS games that use a 3D engine and found that the circle conforms to the surface of the terrain. That means that the circle most likely a non-repeating texture that is only draw on the terrain when a unit is selected. I looked up the Textures section of the documentation, but I am still rather stumped. I would really appreciate it if someone could explain how one should go about implementing this feature.
