Centered Visible Gun's

Copyright info

All code in this tutorial is protected by the [GPL License].
All text in this tutorial is protected by the [FDL License].

Tutorial by: Riot

Mailto: riot@planetquake.com

Ever notice how in Unreal Tournament you can have a centered gun without having it hidden? Let's hack the same thing into Quake 2!

Open cl_ents.c, look for CL_AddViewWeapon. Before it, add this:

 
 
// RIOT - Centered gun
extern cvar_t *hand;
 
 

In the CL_AddViewWeapon function, look for the block:

 
 
 for (i=0 ; i<3 ; i++)
 {
 gun.origin[i] = cl.refdef.vieworg[i] + ops->gunoffset[i]
 + cl.lerpfrac * (ps->gunoffset[i] - ops->gunoffset[i]);
 gun.angles[i] = cl.refdef.viewangles[i] + LerpAngle (ops->gunangles[i],
 ps->gunangles[i], cl.lerpfrac);
 }
 
 

After it, add this:

 
 
 // RIOT - Centered gun
 if(hand->value == 2.0f)
 {
 // Get the movement
 AngleVectors(gun.angles, NULL, anglemove, anglemove2);
 // Move the gun
 VectorScale(anglemove, -8.0f, anglemove);
 VectorScale(anglemove2, -5.0f, anglemove2);
 VectorAdd(gun.origin, anglemove, gun.origin);
 VectorAdd(gun.origin, anglemove2, gun.origin);
 }
 
 

Okay, now to add support for it in the rendering code. For software mode, open r_alias.c, look for this block of code in R_AliasDrawModel:

 
 
if ( currententity->flags & RF_WEAPONMODEL )
{
 if ( r_lefthand->value == 1.0F )
 aliasxscale = -aliasxscale;
 else if ( r_lefthand->value == 2.0F )
 return;
}
 
 

Change that to:

 
 
if ( currententity->flags & RF_WEAPONMODEL )
{
 if ( r_lefthand->value == 1.0F )
 aliasxscale = -aliasxscale;
 // RIOT - Centered gun
 //else if ( r_lefthand->value == 2.0F )
 // return;
}
 
 

For OpenGL mode, open gl_mesh.c, and in R_DrawAliasModel, look for the block:

 
 
if ( e->flags & RF_WEAPONMODEL )
{
 if ( r_lefthand->value == 2 )
 return;
}
 
 

Comment that out.

And that's all! Enjoy Q2 with a centered gun!

Tutorial Originally found at: