Question

Hey, I’m working on a map editor for my game, and I’m trying to convert the mouse position to a position in the game world, the view is set up using gluPerspective

Answer 1

A good place to start would be the function gluUnProject, which takes mouse coordinates and calculates object space coordinates. Take a look at http://nehe.gamedev.net/data/articles/article.asp?article=13 for a basic tutorial.

UPDATE:

You must enable depth buffering for the code in that article to work. The Z value for mouse coordinates is determined based on the value in the depth buffer at that point.

In your initialization code, make sure you do the following:

glEnable(GL_DEPTH);