PheMox :
with models, you must avoid concave ones or lot of polygons regrouped etc ...
the trick is this :
for collision use C_move and if a level part is very detailled with lot of details, collision checking will be slow for lot of triangles,
and the player can be stuck/blocked so the solution :
-make the hight detailled model passable
- make a more simple collision model without all details from the hight detailled (polygon reduction tools or manually)
- make the low poly version with alpha = 0 : invisible
With that you'll have very detailled model passable , with an invisible low poly
version at same position for fast collision checking
For example if you have a scene like a place where there are lot of small rocks,
and some pther things ,when the player walk on them collision system check every detail/polygon , and the player can be stuck :
So if you make a global object for collision with the form of the enveloppe of all the objects in that place ,
your character will be able to walk on all the objects (in fact on the enveloppe) without being stuck.
That's the big trick for fast FPS, perfect working collisions on very detailled
places with lot of polys that could stuck you
this should be on the manual or an example in the SDK, caus is the key
for new beautifull levels made of models with prefect working collision.
And Unreal Engine already uses Enveloppes collisions for fast calculation of
very detailled objects with lot of polys and for no problem of stuck/block
or other things.
Just read that carefully ,and you'l find one of the tricks that allow fast
collision detection in commercial engines like Unreal
http://udn.epicgames.com/Two/CollisionTutorial#Collision_OverviewLike Far Cry , great frame rate is not only very good fast renderer , but also
lot of portals, LOD , collision enveloppes (link above), culling methods ...
And Far Cry don't say it , but it uses Sprites for very far objects
héhhhééé , the big trick ...
so LOD and sprites (i'll try to retrieve the link that explained that
in Far Cry
So theses trick and tips are one the key to Fast frame rate ...