Tutorial for basic modding and code changing

[ASk]

The mod referenced in this tutorial can be found at http://www.darklordofsith.net

 

file: g_weapon.c

Original, line 1674

//rww - We don't want rockets to be deflected, do we?

missile->clipmask = MASK_SHOT;// | CONTENTS_LIGHTSABER;

missile->splashDamage = ROCKET_SPLASH_DAMAGE;

missile->splashRadius = ROCKET_SPLASH_RADIUS;

 

// we don't want it to ever bounce

missile->bounceCount = 0;

 

changed to

 

//rww - We don't want rockets to be deflected, do we? Well, we do....25% chance

if(Q_irand(1, 4)==1) //defines 25% chance

{

missile->clipmask = MASK_SHOT | CONTENTS_LIGHTSABER;

}

else

{

missile->clipmask = MASK_SHOT;

}

missile->splashDamage = ROCKET_SPLASH_DAMAGE;

missile->splashRadius = ROCKET_SPLASH_RADIUS;

 

// we don't want it to ever bounce...yeah right

missile->s.eFlags |= EF_ROCKETBOUNCE; //custom flag for special processing of the bounces (speed down, etc)

missile->bounceCount=5; //bounce count

 

so here I added a random number, based on which the fired rocket gets the deflectable by saber property.

Also notice that i changed the bounce count

 

file: g_missile.c

original, line168 - end of if...else code

added

if (ent->s.eFlags & EF_ROCKETBOUNCE)

{

VectorScale( ent->s.pos.trDelta, 0.8, ent->s.pos.trDelta );

ent->damage *= 1.2; //up damage, etc

ent->speed /= 1.2;

ent->splashDamage *=1.05;

 

// check for stop

if ( trace->plane.normal[2] > 0.2 && VectorLength( ent->s.pos.trDelta ) < 40 )

{

G_SetOrigin( ent, trace->endpos );

return;

}

if (ent->bounceCount==0)

{

G_ExplodeMissile(ent); //explode at the end

return;

}

}

 

Well...usually the missile disappears...it will explode at the end of bounces

 

file: g_cmds.c

original, line 2726

else if (Q_stricmp(cmd, "thedestroyer") == 0 && CheatsOk( ent ) && ent && ent->client && ent->client->ps.saberHolstered && ent->client->ps.weapon == WP_SABER)

{

Cmd_ToggleSaber_f(ent);

 

if (!ent->client->ps.saberHolstered)

{

if (ent->client->ps.dualBlade)

{

ent->client->ps.dualBlade = qfalse;

//ent->client->ps.fd.saberAnimLevel = FORCE_LEVEL_1;

}

else

{

ent->client->ps.dualBlade = qtrue;

 

trap_SendServerCommand( -1, va("print \"%sTHE DESTROYER COMETH\n\"", S_COLOR_RED) );

G_ScreenShake(vec3_origin, NULL, 10.0f, 800, qtrue);

//ent->client->ps.fd.saberAnimLevel = FORCE_LEVEL_3;

}

}

edited:

else if (Q_stricmp(cmd, "thedestroyer") == 0 && ent && ent->client && ent->client->ps.saberHolstered && ent->client->ps.weapon == WP_SABER)

{

Cmd_ToggleSaber_f(ent);

 

if (!ent->client->ps.saberHolstered)

{

if (ent->client->ps.dualBlade)

{

ent->client->ps.dualBlade = qfalse;

//ent->client->ps.fd.saberAnimLevel = FORCE_LEVEL_1;

}

else

{

ent->client->ps.dualBlade = qtrue;

 

trap_SendServerCommand( -1, va("print \"%sTHE DESTROYER COMETH\n\"", S_COLOR_RED) );

G_ScreenShake(vec3_origin, NULL, 10.0f, 800, qtrue);

if(ent->health<3)

{

ent->health=ent->health;

}

else

{

ent->health=0.5*ent->health;

}

}

 

//ent->client->ps.fd.saberAnimLevel = FORCE_LEVEL_3;

 

}

 

if you can see, i added halving the health here and also a check whether the user have little health to not halve it (else you would die from the command)

file: bg_pmove.c

original:

float forceJumpHeight[NUM_FORCE_POWER_LEVELS] =

{

32,//normal jump (+stepheight+crouchdiff = 66)

96,//(+stepheight+crouchdiff = 130)

192,//(+stepheight+crouchdiff = 226)

384//(+stepheight+crouchdiff = 418)

};

 

float forceJumpStrength[NUM_FORCE_POWER_LEVELS] =

{

JUMP_VELOCITY,//normal jump

420,

590,

840

};

 

edited the values:

float forceJumpHeight[NUM_FORCE_POWER_LEVELS] =

{

69,//normal jump (+stepheight+crouchdiff = 66)

288,//(+stepheight+crouchdiff = 130)

576,//(+stepheight+crouchdiff = 226)

1152//(+stepheight+crouchdiff = 418)

};

 

float forceJumpStrength[NUM_FORCE_POWER_LEVELS] =

{

JUMP_VELOCITY,//normal jump

840,

1180,

1680

};

This effectively triples the jump height (note: in the recent version i lowered the values to 1.5 the original Strength and 2 the original Height

 

Now for the yummy code - how to make disruptor shooting through walls:

 

file: g_weapon.c

original, line 607:

if ( tr.surfaceFlags & SURF_NOIMPACT )

{

render_impact = qfalse;

}

edited:

if ( tr.entityNum >= ENTITYNUM_MAX_NORMAL ) {

if ( tr.surfaceFlags & SURF_NOIMPACT )

{

render_impact = qfalse;

break;

}

 

// otherwise continue tracing thru walls

VectorMA (tr.endpos,1,forward,start);

 

tent = G_TempEntity( tr.endpos, EV_DISRUPTOR_SNIPER_SHOT );

VectorCopy( muzzle, tent->s.origin2 );

tent->s.shouldtarget = fullCharge;

tent->s.eventParm = ent->s.number;

tent = G_TempEntity(tr.endpos, EV_MISSILE_MISS);

tent->s.eventParm = DirToByte(tr.plane.normal);

tent->s.eFlags |= EF_ALT_FIRING;

 

continue;

}

This code checks whether the entity the trace hit is solid ( tr.entityNum >= ENTITYNUM_MAX_NORMAL ), then checks if it's the skybox. Afterwards, if it's a wall, it renders the shot and the impact mark and goes out of the loop.

Notice the VectorMA (tr.endpos,1,forward,start);

code. This moves the vector of the trace one point forward, putting it behind the wall, so in the next trace it wont stumble again on this same wall

 

 

Hope this helped.

Post suggestions here or email them at ask@darklordofsith.net

[Elijah]

*bows* now..... do we need C++?

[Vesentac]

You forgot to explain what the line paragraph of code means, after all it is the "key" to the whole thing

[sonictrio]

If you want my coding tutorial (only the slow rocket mod but you don't need C++, MSVC and I've added a new and extremely easy way to create PK3's!). E-mail me at rswann@eircom.net