http://forums.halomods.com/viewtopic.ph ... 49&t=29758
Spawning objects that stay still and have collision (like scenery)
Note: For this tut the map must have a machine you're willing to duplicate or sacrafice.
1) Take a machine and set its speed to 0.
2) Swap the machine's Hlmt with the objects Hlmt that you want to spawn.
3) Go to the Itmc Tag and swap one of the itmc's with the machine that is now your object.
4) Now I recomend you FTP you're map and see if the object has full collision and stays perfectlly still.
5) Add chunks to your map and link them to the proper Itmc.
6) Open up entity and move the Objects around (to see where they are you may need to switch the Itmc to spawn a H_turret then switch it back to your machine when you've moved the spawn points.)
7) Sign map and FTP it and enjoy your scenery like objects with collision!
Tip: If the machine has sounds swap them to something like seagulls