Ironsights Perfected for Call of Pripyat addon

What does the thing do:

This tweak is meant to adjust the proportions of ironsights in 'Call of Pripyat' version "1.6.02" to work accordingly with enhanced default FOV, such as one can have using the Console Controlled FOV mod.

The original basic FOV value in the game is considered to be that of "67.5". According to this FOV, zoom values natively were introduced. However, changing casually the default FOV does not alter zoom strength. This tweak is meant to fit in the original proportions between the default FOV and the zoom FOV.

Speaking of original game setup, my approximating conclusion is that nominal proportion between zoom FOV and default FOV equals 80% for the non-scoped guns and it equals either 30% or 50% for the guns scoped on average. Greatest diversity in values is observed among the specialist marksman guns with optics built-in.

Compatibility and installation:

The fix comes in two versions: vanilla and 'OGR'. The vanilla version is meant understandably for vanilla gear setup. The 'OGR' version is meant to work with the Original Guns Reanimated mod (2016-03-05).

For the 'OGR' variant, to apply - first install the 'OGR' mod, then override with this fix. Notice: if you are going to play with a custom FOV of choice other than "75" or want to use the above mentioned 'Console Controlled FOV' mod then do not install the "bin" folder content from the 'OGR' mod.

How does the thing do what it does:

Here is an example of a simple calculation that I used to determine what values do I need to take for adjusted zoom strength if my basic FOV of choice is 90 degrees: (original zoom FOV of "50") / (original default FOV of "67.5") * (new default FOV of "90") = (adjusted zoom FOV of "66.67").

Change is applied to all further downlisted files in the range of "scope_zoom_factor" parameter. Furthermore, a custom tweak is applied:

• Precision rifles and rocket launchers (big guns) are given FOV stronger extra by 5%*
• Assault rifles and shotguns (medium guns) are given FOV value unchanged
• Pistols and SMGs (small guns) are given FOV weaker by 5%*
• Upgrades to guns are given FOV value unchanged

* bonus means final multiplier of "0.95" and penalty means final multiplier of "1.05".

Details of all changes on the example of a "90" tweak:

"/gamedata/configs/weapons"
"w_abakan.ltx" - original "50" - new "66.67"
"w_ak74.ltx" - original "50" - new "66.67"
"w_fn2000.ltx" - original "50" - new "66.67"
"w_lr300.ltx" - original "50" - new "66.67"
"w_pkm.ltx" - original "50" - new "66.67"
"w_protecta.ltx" - original "50" - new "66.67"
"w_sig550.ltx" - original "50" - new "66.67"
"w_val.ltx" - original "50" - new "66.67"

"w_ak74u.ltx" - original "50" - arbitrary change to "55" - new "77" (penalty 5% to "73.33")
"w_mp5.ltx" - original "50" - arbitrary change to "55" - new "77" (penalty 5% to "73.33")
"w_groza.ltx" - original "50" - arbitrary change to "55" - new "77" (penalty 5% to "73.33")

"w_beretta.ltx" - original "55" - new "77" (penalty 5% to "73.33")
"w_colt1911.ltx" - original "55" - new "77" (penalty 5% to "73.33")
"w_desert_eagle.ltx" - original "55" - new "77" (penalty 5% to "73.33")
"w_fort.ltx" - original "55" - new "77" (penalty 5% to "73.33")
"w_hpsa.ltx" - original "55" - new "77" (penalty 5% to "73.33")
"w_pb.ltx" - original "55" - new "77" (penalty 5% to "73.33")
"w_pm.ltx" - original "55" - new "77" (penalty 5% to "73.33")
"w_sig220.ltx" - original "55" - new "77" (penalty 5% to "73.33")
"w_usp45.ltx" - original "55" - new "77" (penalty 5% to "73.33")
"w_walther.ltx" - original "55" - new "77" (penalty 5% to "73.33")

"w_rg6.ltx" - original "55" - new "77" (penalty 5% to "73.33")

"w_spas12.ltx" - original "55" - arbitrary change to "50" - new "66.67"
"w_toz34.ltx" - original "55" - arbitrary change to "50" - new "66.67"
"w_wincheaster1300.ltx" - original "55" - arbitrary change to "50" - new "66.67"

"w_bm16.ltx" - original "55" - maintained - new "77" (penalty 5% to "73.33")

"w_g36.ltx" - original "33.3" - new "42.18" (bonus 5% to "44.4")
"w_l85.ltx" - original "30" - new "38" (bonus 5% to "40")
"w_rpg7.ltx" - original "30" - new "38" (bonus 5% to "40")
"w_gauss.ltx" - original "5" - new "6.33" (bonus 5% to "6.67")
"w_svu.ltx" - original "20" - new "25.33" (bonus 5% to "26.67")
"w_svd.ltx" - original "15" - new "19" (bonus 5% to "20")
"w_vintorez.ltx" - original "15" - new "19" (bonus 5% to "20")

"w_binoc.ltx" - original "7.5" - maintained

"/gamedata/configs/weapons/upgrades"
"w_fn2000_up.ltx" - original "-35" - new "-46.67"
"w_g36_up.ltx" - original "-15" - new "-20"
"w_l85_up.ltx" - original "-15" - new "-20"
"w_svd_up.ltx" - original "-10" - new "-13.33"
"w_svu_up.ltx" - original "-10" - new "-13.33"
"w_vintorez_up.ltx" - original "-5" - new "-6.67"

"/gamedata/configs/weapons/weapons.ltx" - per file section:
"[wpn_addon_scope]" - original "25" - new "33.33"
"[wpn_addon_scope_x2.7]" - original "40" - new "53.33"
"[wpn_addon_scope_detector]" - original "30" - new "40"
"[wpn_addon_scope_night]" - original "30" - new "40"
"[wpn_addon_scope_susat]" - original "30" - new "40"
"[wpn_addon_scope_susat_x1.6]" - original "50" - new "66.67"
"[wpn_addon_scope_susat_custom]" - original "30" - new "40"
"[wpn_addon_scope_susat_dusk]" - original "50" - new "66.67"
"[wpn_addon_scope_susat_night]" - original "30" - new "40"

Chosen toolbox credits:

'gedit' text editor version "41.0"
'colordiff' file content comparer version "3.8" (GNU utils)
'AXRToolset' for 'Call of Chernobyl' by revolucas

Special thanks to @r_populik for his 'Original Guns Reanimated' and 'Original Weapons Renewal' mods.
Special thanks to @XoBaR for his 'Larger FOV in ironsight' mod being an inspiration.