Getting Started

Alright, to start off and get to know Torque Game Engine and how it works, I checked out the GettingStarted.pdf. Im stuck on one part where it says to type in the command section, "loadMyMission();". Unfortunately it didnt work. I tried it many different ways. There were two ways that seemed to work but then failed. I tried the loadMyMission(); but then an error occured. The next one was when I made everything lowercase like so. loadmymission(); That DID work and it started my game, but there was one problem. The terrain was gone. If anyone has a solution, I would be very grateful. Also, I have one more question. How do I stop the terrain from repeating? Thanks.