Hey – now a finale got my bsp engine up and running (collision and shooting), based on levels from radiant And naturally the next step would be to place monsters (enemy) in the level. I have decided to use md2 models (because its simple, which is best for me!) BUT – how do I know which path the enemy can run ?? Must I create some predefined points in the level where the enemy can move between ?, etc move away from me if their frustrum hits me … I just have NO idear on how they do it in Quake2-3 Any input will be great, links etc please help me