Adding weapons

Multiplayer

• • • This guide assumes that you started out with HL2MP and VC++ Express Edition (It's FREE)***

The models Weapons consist of 2 models, each with their own prefix. A model named v_???.mdl is a view model this is the model that is seen from the players perspective, this normally consists of not only the weapon model but also the player hands. Next is the w_???.mdl; this is known as the world model, these models are used for weapons laying on the ground and also for weapons that you can see in other characters/players hands.

You can make your own or use the CSS one's.

Once you have made the relevant models, they go into the folder: /nameofmodfolder/models/weapons/

The Textures The textures/skins for the weapons also need to be placed in the correct folder so once the textures are done, they need to be placed in: /nameofmodfolder/materials/models/weapons/

weapon_???.txt Each weapon has its own script file which can be edited in any .txt program, the weapon script file has many different purposes, which include:- model file names, bucket info, clip size, ammo type, weight, sounds, icons, crosshairs. For pistols start with pistol.txt, and for SMGs MGs, and assault rifle use smg1.txt as a template. This is an example of the weapon_pistol.txt file:

Code: // Pistol

WeaponData {

  // Weapon data is loaded by both the Game and Client DLLs.
  "printname"   "#HL2_Pistol"
  "viewmodel"         "models/weapons/v_pistol.mdl"
  "playermodel"      "models/weapons/w_pistol.mdl"
  "anim_prefix"      "pistol"
  "bucket"         "1"
  "bucket_position"   "0"

  "clip_size"         "18"
  "primary_ammo"      "Pistol"
  "secondary_ammo"   "None"

  "weight"         "2"
  "item_flags"      "0"

  // Sounds for the weapon. There is a max of 16 sounds per category (i.e. max 16 "single_shot" sounds)
  SoundData
  {

     "reload"      "Weapon_Pistol.Reload"
     "reload_npc"   "Weapon_Pistol.NPC_Reload"
     "empty"         "Weapon_Pistol.Empty"
     "single_shot"   "Weapon_Pistol.Single"
     "single_shot_npc"   "Weapon_Pistol.NPC_Single"
     "special1"      "Weapon_Pistol.Special1"
     "special2"      "Weapon_Pistol.Special2"
     "burst"         "Weapon_Pistol.Burst"
  }

  // Weapon Sprite data is loaded by the Client DLL.
  TextureData
  {
     "weapon"
     {
           "font"      "WeaponIcons"
           "character"   "d"
     }
     "weapon_s"
     {   
           "font"      "WeaponIconsSelected"
           "character"   "d"
     }
     "ammo"
     {
           "font"      "WeaponIcons"
           "character"   "p"
     }
     "crosshair"
     {
           "font"      "Crosshairs"
           "character"   "Q"
     }
     "autoaim"
     {
           "file"      "sprites/crosshairs"
           "x"         "0"
           "y"         "48"
           "width"      "24"
           "height"   "24"
     }
  }

}

so create your weapon_nameofweapon.txt file in the same format as shown and save it in the following folder:

/nameofmodfolder/scripts/

"printname" "#HL2_Pistol" --Make this whatever you want

Making your weapon show in Hammer -- Not Tested sorry To get your weapon to show in hammer you need to add the entry to your .fgd file, which should be saved in sourcesdk/bin/

Open it up in notepad or similar, and find where the other (HL2) weapons are referenced. Add yours with them, here is an example: @PointClass base(Weapon) studio("models/weapons/w_tazer.mdl") = weapon_tazer : "Tazer" []

Open:

C:\yourmod\src\cl_dll\hl2_hud\c_weapon__stubs_hl2.cpp

add your gun under #ifndef HL2MP (line 27)

just copy and paste one of the lines renaming the relevant information

Example:

STUB_WEAPON_CLASS( weapon_ar2, WeaponAR2, C_HLMachineGun );

changed to

STUB_WEAPON_CLASS( weapon_m249, WeaponM4A1, C_HLMachineGun );

Open:

C:\yourmod\src\game_shared\hl2mp\hl2mp_gamerules.cpp

Find CAmmoDef *GetAmmoDef() (Line 910)

Copy and paste the line that is closest to your weapon type, I chose

def.AddAmmoType("MP5NAVY",DMG_BULLET,TRACER_LINE_AND_WHIZ,0,0,225,BULLET_IMPULSE(200,1225),0 );

Replace MP5NAVY with the ammo name in your script file (weapon_???.txt)

Make the code files where ever you want, I would recommend your C:/modname/src folder. When you complete the code expand under Server -> Sources Files -> HL2MP -> Weapons, right-click on Weapons then Add -> Existing Item and find your .cpp file

Do the same for Client -> Sources Files -> HL2MP -> Weapons

also, if you want your weapon to be given with the impulse 101 cheat, add it in this file: /dlls/player.cpp

NOTE: some of the directory structures may be different, following SDK updates etc. this was written after the large August 2006 update

There you have it; you should now have an understanding of how to get a new weapon in-game. Be aware that there is a lot of work to be done that I have not mentioned in detail, such as the code or explaining the weapon_???,txt file fully. Most people should be able to figure out the rest.

Good luck and I hope to see some new weapons being made soon.

I noticed that there were no decent up-to-date guides hence this wiki -Iliketofrolic666