Battlestations Midway modding

I have seen some people asking about how to do the modding i have done on battlestations midway
so i thought i would create this page to help them. All that you need to do for modding this is scripting,
which means you just edit a text file basically, its very easy.

***First, and most importantly, you must BACK UP
YOUR MPAKS. go to your c:/program files/battlestations midway/mpak
folder and copy all of those files to another folder of your choosing.
If you ever want to play online again after modding, you must copy these
files and overwrite all of your modded files otherwise the game will
crash due to conflict.***

As you may have seen on mainstream battlestations modding sites,
you need to "unpack" files from other files
in battlestations midway before you can make any use of them. BSM
uses filed with a .mpak extension which you can think of like a .zip.
The wiled need to be zipped before the game will use them, and unzipped
before you can edit them.

To start editing you will need to download BSM-RIPPER.
this is like winzip but for the mpak files mentioned earlier. Install
anywhere you like and run it. Click the "open game Mpak" button on the
top-right. YOu now need to navigate to your BSM mpak directory. (this
will usually be C:/Program Files/Battlestations Midway/mpak or
C:/Program Files(x86)/Battlestations Midway/mpak) In this folder are
files for most missions and other things but we will go over them later.
Scroll to the bottom and open "GGame__OnInit.mpak". Click "select all"
at the top of the file list and then click "Extract Selected files" to
the right. When that is done click the "open folder" button next to
that.

This shows all the stuff contained in the "Ggame onint" thing. In
this file is what is loaded when you start the game. It will be applied
no matter what map you load or game you start. Most cool unit modding
can be done here (while most map modding uses other files). For the
modding we are going to do navigate to
/scripts/datatables/autoload/vehicleclasses.lua and open with notepad.
As you can see their are actually useage tips in here for modding this,
but they are in some other language that i never felt like translating.
Anyway you can search for the name of the ship you want to edit, keeping
with my theme, i will search "fuso". You should see a line like this:

["Name"] = "globals.unitclass_fuso", --"Fuso-Class Battleship",

Below this line is everything you could want to edit about this
ship. Many of the values that you modify WILL be in english, so it
should not be hard to mess around and change what you would like. For
our purposes, though, we will scroll down past the other tempting values
to the section labled "Fegyverzet". (which i can only assume means
"Weapons") ths most important value here is the number below the "name"
entry. for example:

["Name"] = "Turret 1",
["Gun"] =
{
[1] = 25, <<<<<<<<This Value
}, --Gun

In this case you will want to change the value "25" into something
else that you would like to be there instead of turret # 25. (turret 25
is the Fuso main gun) The easiest way to change this is simply to search
for another ship name that you want the turret from and use that
number. So i could go search for fletcher, see that its turret is "15"
and change the "25" to a "15" instead, which would make one of the
fuso's guns very small. This trick will work with any gun or turret on
any ship that is used on the map you are playing on. For example you can not use a turret from the yamato because their is no yamato in "strike on the monster".

If you want to add something froma ship not on the map, you will
have to add the files from that ship to your map. To do this the easy
way, open any map file that has the ship you want, (extract it with
BSMripper) and also open the map you want to add to copy all the weapons
related folders. (almost all of them except universe) into the second
map and repack.

To repack a bunch of files back into a mpak so that the game can
read it, just use bsmripper again! Select the "select .mpak folder"
button, navigate to the "ggame oninit" in where you installed
bsmripper/extractedfiles and click the "pack new mpak" button. When
thats done click "open folder" next to it, and copy that file back into
your Battlestations Midway/mpak folder, overwriting the original. (you
remembered to make backups first, RIGHT?) If all went well your modded
fuso should be in the game.

Quelle