Hi AdamskiAirsoft,
Sorry for the slow reply, I was kind of hoping some FPS developers/modders in the community might chime-in on this before me.
Anyhow, for a FPS I would recommend that when you generate your map, you set the 'horiz. scale' to around 1m. The default is 10m, which makes the terrain look too smooth at the FPS-level as you observed. The terrain-generator is also not terribly-well optimised for this scaling-regime, so you may need to do some tweaking to get it right.
To get a detailed-looking texture-map I recommend you use both high-resolution light-mapping and texture-mapping (4x is a minimum). This requires the professional version of L3DT. If you don’t have a license, you can register for a trial-version via the instructions on
the downloads page.
Here’s what I came up with after a few minutes playing with a 1024x1024 heightfield (0.5m/pixel), and a 4096x4096 texture:
The camera height was 2m above the terrain and un-zoomed, so this is a reasonable FPS-shot. The textures still look a little bit blurry, but you could easily do better with a higher-res texture (eg. 16x), by texture-splatting, or by using a good high-res detail-map overlay.
Cheers,
Aaron.