Inside3D tutorials.
Step 1
Ok, in this tutorial we're gonna create a DetPack bomb. Sounds cool? Then try it out!
Find the Impulse Commands section under weapons.qc
Copying the code already there add an impulse 20 that will goto DropDetpack as below:-
============
ImpulseCommands
============
*/
void() ImpulseCommands =
{
if (self.impulse >= 1 && self.impulse <= 8)
W_ChangeWeapon ();
if (self.impulse == 9)
CheatCommand ();
if (self.impulse == 10)
CycleWeaponCommand ();
if (self.impulse == 11)
ServerflagsCommand ();
if (self.impulse == 20) //This is the new impulse command
DropDetpack (); //This is where it will goto when the impulse is keyed in from the console
if (self.impulse == 255)
QuadCheat ();
self.impulse = 0;
};
Step 2
Now we need to add the routine called "DropDetpack" into Weapons.QC also.
I have added it just above the section "Player Weapon Use"
This is how it should look:-
void() DropDetpack =
{
if (self.ammo_rockets >= 25) //Check to see if player has 25+ rockets
{
self.ammo_rockets = self.ammo_rockets - 25; //reduce rockets by 25
local entity item; //create a variable called item
item = spawn(); //spawn an item
item.origin = self.origin - '0 0 24'; //create item at 24 above player
item.velocity_z = 300; //items vertical velocity
item.velocity_x = -100 + (random() * 200); //Item is thrown in...
item.velocity_y = -100 + (random() * 200); //a random direction
item.flags = FL_ITEM;
item.solid = SOLID_TRIGGER; //Trigger an event when touched
item.movetype = MOVETYPE_TOSS; //Movement type..ie. throw it !!
setmodel (item, "progs/backpack.mdl"); //Graphic to be thrown
setsize (item, '-16 -16 0', '16 16 56'); //Set size of graphic
item.owner = self; //set item.owner to players ident
item.touch = DetpackTouch; //if item is touched then goto DetpackTouch
item.nextthink = time + 120; //After two minutes execute item.think
item.think = DetpackExplode; //So after two minutes execute DetpackExplode
}
else //Not Enough rockets...
{
sprint (self, "not enough ammo.\n"); //Print to player..."You ain't got enough ammo!!"
return; //return to game
}
};
Step 3
OK. This now references two more routines :- DetpackTouch which will tell the pck to explode on enemy contact
but not on owner contact, and DetpackExplode which will errrr... well work it out for yourself.
Because of the way that Quake C works, these two routines MUST be in the right order. QC will not goto a routine
that it has not already seen. Ie. These two must go ABOVE the code we've already put in. But since we will need to
reference DetpackExplode from DetpackTouch, DetpackExplode MUST go above DetpackTouch.
Here's my annotated source code...
void () DetpackExplode =
{
T_RadiusDamage (self, self.owner, 1000, world); //This will create the damage radius, a grenade
//does 120 but we want a BIG explosion.
//So we'll ues 1000 !! ;-)
WriteByte (MSG_BROADCAST, SVC_TEMPENTITY); //Sets up a temporary entity
WriteByte (MSG_BROADCAST, TE_EXPLOSION); //Temporary entity is an explosion
WriteCoord (MSG_BROADCAST, self.origin_x); //Create at Backpack Origins(x)
WriteCoord (MSG_BROADCAST, self.origin_y); //Create at Backpack Origins(y)
WriteCoord (MSG_BROADCAST, self.origin_z); //Create at Backpack Origins(z)
BecomeExplosion (); //BANG !!!
};
void() DetpackTouch =
{
if (other == self.owner) //If player touches their own detpack then ignore it
{
return; //Return to game
}
if (other.takedamage == DAMAGE_AIM) //If player/monster who touches detpack can take damage
{
DetpackExplode(); //BANG !!!
return; //Return to game.
}
if (self.velocity == '0 0 0') //If backpack isn't moving then:-
{
self.avelocity = '0 0 0'; //prevent it moving angularly (I think ?!?!? )
}
};
Right...this code needs to go right above our DropDetpack code. We're almost there !
Step 4
Final step !! Since we're using a new model within this area, we need to pre-cache it to ensure that
it has the graphic available when it needs it. So underneath all of the sound_precache files at the top
of weapons.qc add the following line...
precache_sound ("weapons/grenade.wav"); // grenade launcher
precache_sound ("weapons/bounce.wav"); // grenade bounce
precache_sound ("weapons/shotgn2.wav"); // super shotgun
precache_model ("progs/backpack.mdl"); // Backpack for DetPack
And that as they say "is all folks !!". Thanks for being interested. Compile up this code and run it under Quake.
Either type in impulse 20 on the console or Bind a key to it. Have Fun!!