Hello, I''m using blitz basic for my RTS game. I want now to determine where user clicked on screen coordinates and than transform them into world coordinates. I use CameraPick for entities like cars, tanks but I cannot pick whole terrain!!! Trile[NOB]

Simply cast a ray from the camera across the terrain, and stop when ray.z <= terrainZ[ray.x][ray.y]. The resulting point of intersection is (ray.x, ray.y, ray.z).