OFrP French Army Mod v3.1

**jumpnjack** · May 28 2012, 18:56

This looks great! Im really happy to see more carriers in Arma 2 and those heli and fixed wing looks awsome! Lways top notch work from you guys!

**SuicideCommando** · May 28 2012, 19:07

Very nice work again, loving those HK's and the desert COS units.

**Nikiforos** · May 28 2012, 19:07

I was really sad cause game crashed with the old version. Now Im really happy that the update will fix this and also because this mod is one of my favourites

**panda123** · May 28 2012, 21:24

Excellent work guys

**sv5000** · May 28 2012, 23:12

Can Not Wait!

Looks great!

**_William** · Jun 10 2012, 12:45

TigerForce, OFrP team: since I love to have your CAESAR batteries working in single player missions (my PlannedAssault generated missions, or anybody else's) , I've done some editing and tweaking of your config to see if I can make things work.
With the following changes to the config, and two additional scripts to deploy a group of CAESAR vehicles, the AI will be able to fire artillery missions successfully using the Arma2 artillery module. See below.

If you need assistance or clarification, please leave me a PM. My french is limited.

Config changes:
1. provide matching ballistics table for the 155MM shells (ofrpmod\scripts\wheeled\155mm_ballistics.sqf), and
2. register the ammo accordingly (done in the ballistics file, which is evaluated at mission start time).

Click to see ballistics table. According to the ballistics, the gun is capable of engaging between 280m and 8900m.
Spoiler:

Config changes (continued):
3. define HE (and other) 155mm shells using the correct properties, so explosions are visible (settings basically copied from Arma2's ARTY_Sh_122 group of shells):
Spoiler:

Config changes (continued):
4. associate the 155mm ballistics file defined above with the magazines, and define additional magazines for WP, Smoke, Illum and Laser.
Spoiler:

Config changes (continued):
5. make the CAESAR (separate) gun vehicle an artillery vehicle (same for TRF1b):
Spoiler:

With the above changes, the CAESAR gun and ammo are correctly configured.

The next problem is that the Arma2 artillery module doesn't understand how the CAESAR vehicle is composed. The artillery module expects to find a gun in the CAESAR vehicle manned by a gunner. However, OFrP has designed the CAESAR vehicle as a truck with a single crew member. To this truck a separate gun is attached dynamically. This gun is manned only when the crew member dismounts the truck, and mounts the gun. The gun won't fire until the CAESAR vehicle has lowered its base.

Config changes (continued):
6. add the CAESAR gun 'vehicle' to the CAESAR truck vehicle's group when attaching it (in ofrp_mod\scripts\wheeled\caesar_montage.sqf):
Spoiler:

Additional scripts required, to be invoked after a CAESAR group arrives at its firing position.
This scripts orders the crew to man the CAESAR guns, to create a situation which the Artiller module understands. Then it removes earlier Arty module synchronization information and synchronizes again with the artillery module (the BIS_ARTY_F_Firebase call):
7. Script ofrp_mod\scripts\wheeled\deploy_ai_caesar_battery. sqf, to be invoked with the group.
Spoiler:

8. Script Script ofrp_mod\scripts\wheeled\deploy_ai_caesar_vehicle. sqf, which is invoked by the script above. It dismounts the crew member and has it mount the gun and prepare the gun (lower the base).
Spoiler:

To have a CAESAR group fire an artillery mission, you'd send it to a position, wait for them to arrive, invoke the deploy_ai_caesar_battery.sqf script, wait for the script to complete, and next fire an artillery mission (either using the Support module, or from a script).

Again, thanks for your work on OFrP!

William

**TigerForce** · Jun 14 2012, 18:59

Thank for this initiative William, we were already working on an OFrP_Arty_module, but your last scripts are interesting.

Just one problem, in the next release, the gun and the Caesar truck will be a lone vehicle, as the Grad for exemple.

I have a question : Where do the numbers of your ballistic file come from ?

Concerning the PM, wait a response, but not today, the man in charge of it isn't avalable yet.

**_William** · Jun 14 2012, 19:34

TigerForce,
- the CAESAR being a single vehicle including the gun will make things easier. Fewer scripts is better.
- I've computed the shell ballistics using the function ARTY_generateFormattedBTab that is available as part of BI's Arty module. It takes the magazine as input, retrieves the muzzle velocity and air friction from the magazine's config, and computes a look up table. The script will compute the ballistics table in the background (takes up to 2 minutes) and copy the result to the Windows clipboard. Open a text editor, press "Paste" et voila.

You can put the following in the init.sqf of any mission to compute your own ballistics table (and you should do so after changing the ammo initial speed and air friction).

Code:

waitUntil {not isnil "BIS_ARTY_LOADED"};
waitUntil {BIS_ARTY_LOADED};

// Compute proper ballistics for the OFrP_18Rnd_155_HE.
["OFrP_18Rnd_155_HE", 40, 89, 1, -1000, 1000, 100] execVM "\ca\modules\arty\data\scripts\ARTY_generateFormattedBTab.sqf";

Parameters for the script are: minimum gun elevation (40 degrees here), max elevation (89), elevation increment (1 degree), min altitude difference (-1000m), max altitude difference (1000m).
You'd typically only change the min and max gun elevation to reflect the artillery vehicle characteristics: some guns cannot raise the muzzle too high or aim too low.

The one thing I've added to the generated ballistics table in the post above is automatic registration of the ammo and magazine with the gun, so the Arty module knows which magazine to load in order to fire HE, SMOKE, etc.

William

**GossamerSolid** · Jun 14 2012, 21:24

Originally Posted by TigerForce

the gun and the Caesar truck will be a lone vehicle, as the Grad for exemple.

Thank you, right now I can't really make any use of the Caesar because of it's current setup.

**TigerForce** · Jun 16 2012, 12:32

Some screens of our rifle grenades : (Click to enlarge)

Thread: OFrP French Army Mod v3.1

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