Project RDX mod for Quake III Arena

You have games like the original Quake 3, old school, very fast-paced, arcade-ish, often with a simple yet perfected gameplay.
Then you have games that attempt at realism, slower paced, based on strategy rather than reflexes.
But, what if you want something in between? And you want it open-source? And you want it to run on an old machine?
The main goal of this engine&game mod is to achieve that balance.

This is basically what has changed so far:
-Four Classes (soon to be five): Combatant, Engineer, Sniper and Heavy (Medic will be next)

-New weapons:
-- Axe
-- 2 assault rifles
-- 2 submachineguns
-- 2 types of pistol and a mini SMG to serve as sidearms (dual or single)
-- 2 light machineguns
-- 3 "full-power" rifles
-- A flamethrower
-- Hand grenades
-- Sticky explosive charge
-Special items:
-- Welding gun
-New player animations.
-Sprinting, weapon magazines, iron-sights zooming, alt-fire, weapon attachments.
-MD5 (doom 3's) Models
-Hitboxes (localized damage, headshots and all), relative to MD3 and MD5
-Pieces of armor protecting different bodyparts
-Fixed turrets
-some destructable environment
-New melee combat (combos, power-strikes, blocking)

What's in the pipeline:
-Wall jumps
-Damage from slamming into a wall
-Medic class with portable medikits
-Rotating doors
-Coop zombie mode
-Powered armor
-Bomb mode
-Whatever is of inspiration!

Some elements of the mod itself may change over time. Balance will likely change, especially since the dev team has been composed only by myself so far.

A more detailed description of gameplay follows.

==Classes and weapons==
There are, currently, four classes. Each class has its own stats and six weapon slots: melee, sidearm, primary, secondary, and two special slots.
As of now, weapons have a further restriction in team-based games, as you can spawn only with your team's weapons (Once you are in game however, you can pick up enemy weapons). To add on that, you can currently use a weapon ONLY if your class supports it, e.g. no snipers with rocket launchers. This will likely change over time, and if you use an unsuitable weapon you'll only have a penalty in spread and/or recoil.

Combatant
You can wield assault rifles, SMGs and shotguns as your primary weapons, and another shotgun or SMG or an old, WW2-style bolt-action rifle in your secondary slot.
As for speed and hit points, they're average.

Engineer
You can use a flamethrower or a grenade launcher as your primary, and a SMG or a shotgun as your secondary. You also can carry a satchel charge instead of your hand grenades, and get to spawn with a free gas welding gun - used for repairing equipment and stuff like that.
Average hit points, slow speed (80%) -- to balance out the fact that your flamethrower is really deadly (yet heavy).

Sniper
You have either a very accurate bolt-action sniper rifle, and a slightly less accurate semiautomatic one (depending on team as of now).
Your secondary is a SMG.
Less hit points (75), but fast speed (120%).

Heavy
You can have in your primary slot either a rocket launcher or a machinegun, and a shotgun in your secondary.
Also you can bring with you satchel charges instead of hand grenades, just like the engineer.
More hit points (125), but slow speed (80%).

(Medic, coming soon)
The primary slot is restricted to a syringe-style medikit, which heals over a period of some seconds but is plentiful in "ammo". You can keep a SMG, shotgun or bolt-action in your secondary.
You also spawn with a box-style medikit, scarce in ammo that however heals quickly and by a large extent.
Less hit points (75), average speed -- to balance out the fact that you can heal yourself.

All classes can also have a sidearm and hand grenades, and get a default melee weapon (currently an ax - because knives are for sissies!).
You can cook said grenades, with all the risks involved.

Shooting is now less accurate the faster you move, as a tiny step towards realism. This is more or less dramatic depending on the weapon: as a general rule, close range weapons have very little penalty - you can run and hop all over the place and still blast your shotgun around - while long range weapons have heftier penalties -you have to be pretty much still to use a sniper rifle.

Now weapons of the same caliber do the same damage, regardless if it's a rifle or a machinegun.
The type of bullet also affects how much easily armor is penetrated. Slower bullets will mostly damage the armor, while faster bullets will rather damage whoever is in it.

==Hitboxes and armor==
Hitboxes use, as of now, a somewhat simplified version of the player model to determine hits. The damage output is different according to which area is hit:

Head - 6x damage
Neck - 2x damage
Upper torso - 1.35x damage
Lower torso - 1x damage
Limbs - 0.3x damage

There are three pieces of armor:
Helmet - 1.5x protection to the head (if you have one, headshots from most weapons won't one-hit-kill you). Can take 30 points of damage.
Hard armor - protects lower and upper torso, full protection. Can take 100 points of damage.
Jacket - Gives half the protection of helmet or hard armor, and is worn under said hard armor. Protects all bodyparts except the head, and can relieve you from 100 points of damage.

The percentage of damage that is stopped by an armor piece (which means, doesn't penetrate) damages the armor itself, that will be destroyed once it reaches its point of "critical existence failure".

Currently you can't scavenge armor off dead players - that will change, given enough time.

==Other rules==
Sprinting takes your stamina (along with jumping) and multiplies your forward speed by 50%.

Some things in the map can be destroyed if they take enough damage.
In addition, some of these can explode. Who doesn't love exploding barrels?
Currently, said things do not respawn.
Only fixed turrets (heavy machineguns) can have a comeback if wrecked, since an engineer can pull out his "Weld-O-Master 2400" and make it as new once again.

In instaGib mode, the railgun has been replaced to the (otherwise identical) laser gun. In said mode you can choose whether to use hitboxes or not via a cVar.

==Bugs not to be surprised by==
Yeah, a side effect of development. The worst:

-Headshot hit detection is somewhat iffy in the older MD3 models; the bug appears to be solved with the addition of MD5 models.
-A few player animations jump awkwardly from one to another - especially the death animation.