Doom RPG Reverse Engineering Project

[Anarkavre]

I have been working on a Doom RPG reverse engineering project for the past year. I started by creating some C functions and data structures to work with the game data files with help from Decoding Doom RPG and fraggle's .bsp file format documentation. I managed to figure out a little more of the file formats that hasn't been discovered yet and fixed some things that were slightly wrong. The custom engine I am creating is written in C++ and uses SDL and OpenGL. It supports VR for the Oculus Rift and Oculus Quest using Oculus Link. I am also creating a map editor which will support mods. There is still a lot of work to be done, but here are some early screenshots.

 

Update 1

 

I implemented some of the UI for the status bar. The direction indicator changes based on the direction of the player and a message shows based on the target of the player. I plan to add optional enhancements like quickslot items.

 

Update 2

 

I have made some more progress that I thought I would share. I have replicated 50% of the event scripting including things such as doors and dialog. I implemented pickup of weapons and rendering them from the first person perspective. The weapons also animate and play the sound effects when fired.

 

Update 3

 

I managed to get the resources from the BREW version off my phone. Special thanks to @Erick194 and @kraze for showing me the tools necessary to achieve this. The J2ME and BREW resources are both supported by the engine.

 

 

 

 

 

 

 

 

 

 

Edited January 29, 2021 by Anarkavre

[AtticTelephone]

Never played it before, but I will want to try this.

[taufan99]

Looks impressive so far! Hope to see more of news on this anytime soon.

[Erick194]

@AnarkavreExcellent work, I like how it looks, does it have playability? Keep going I hope to see more of this. Old memories brings me the second image with my extraction and map display programs.

 

 

[P41R47]

Totally supporting this!

A moddable first person RPG is something i always wanted.

 

Hope you can keep at it, pal!

[chexwarrior]

Looks very cool, very interested in playing Doom RPG again, its been a long time.

[Anarkavre]

Thanks everyone!

 

@Erick194 There is no gameplay yet, but you can walk around the maps and there is collision detection using the blockmaps.

[Anarkavre]

You may find this video interesting.

[taufan99]

Is that rotating menu screen your work? That has to be neat, especially given how it runs on an old Motorola phone.

[Anarkavre]

@InDOOMnesia No, this is the actual legendary BREW version of the game that I still have.

[Hitboi]

@Anarkavre I thought it was just a Motorola conversion test until I read this, pretty cool.

 

[Erick194]

2 hours ago, Anarkavre said:

You may find this video interesting.

Oh really cool, could you please get the game files and post it for me to take care of extracting the game graphics and sounds?

[Dimon12321]

Yeah, a jar file would be great. I'm not sure if it will work on Nokia C2-01, but I'd like to give it a try

[Cinnamon]

Love that someone is working on this. <3

 

Played a bit on my friend's cell back when it came out and have since sinking into the DOOM community been dying to see what it's like with adult eyes.

[Erick194]

In good theory it should be like this at the root of the cell phone

brew- |
           | _> doomrpg
           |                    | _> confg
           |                    | _> doomrpg.bar
           |                    | _> doomrpg.mod
           |
           | _> doom rpg.mif

Those must be the game files.

[Anarkavre]

@Erick194 I tried to do that early last year, but was unsuccessful. Unfortunately the model of the phone I have has a lock on the directory where BREW apps are stored, so you cannot copy any of the data off the phone in a simple manner. If anyone has any knowledge on this, it would be greatly appreciated. Until then, all I can do is share screenshots and videos. I do not want to risk bricking the phone.

Edited January 4, 2021 by Anarkavre

[fraggle]

Awesome to see Doom RPG being resurrected, I have fond memories of it and it's something of a forgotten gem in the Doom series. I'm also glad you were able to build on my previous reverse engineering work!

[Erick194]

I appreciate your effort, okay I will try to find information, I would like to see videos of course.

 

By the way, what model is your motorola?

Edited January 4, 2021 by Erick194

[Anarkavre]

@fraggle I am going to document things I corrected and discovered about the game data files. Hopefully we can consolidate definitive documentation.

[Anarkavre]

@Erick194 The phone is the Motorola V325.

[Anarkavre]

Here are three more videos.

 

Fire

Nightmare

Dr. Guerard/Kronos

Edited January 5, 2021 by Anarkavre

[whatup876]

This is very precious and amazing content.

It's like seeing the only unicorn left on Earth.

[P41R47]

9 minutes ago, Anarkavre said:

Here are three more videos.

 

Fire

Nightmare

Dr. Guerard/Kronos

Holly Shit!

I played Doom RPG a lot and emulate it on J2Me for Android, but the BREW version seems to be far better thatn the one i have :O

Edited January 5, 2021 by P41R47

[usernameak]

9 minutes ago, Anarkavre said:

Here are three more videos.

 

Fire

Nightmare

Dr. Guerard/Kronos

Did @Erick194 send you my way to dump filesystem image from phone?

[Anarkavre]

Here are the last two videos.

 

Revenant

Belphegor

[Devalaous]

Neat! Ive been hoping someone would find a way to bring this game to PC, since it was only for an old line of phones.

[DarkQuill]

Only even played Doom2 RPG on a shonky Nokia emulator, so this would be pretty cool to play. Great stuff so far!

[BlueThunder]

Haven't played this since I had a flip phone.  This and the wolfenstein one were all I could bear at the time.  

[kraze]

Hi, I am the guy who have earlier posted Wolfenstein RPG, Orcs and Elves I for BREW which I have extracted from LG phones.

(see here:

).

 

I suppose I was also at the origin of posts of the other ID games for BREW which I have posted several years ago on another forum.

 

With revskills you are able to extract the efs image from select phones (i.e. Motorola v3c, k1m tested as per video below), and extract the files from the image..

 

You might need to find the correct COM-port though, this can be either the modem port, or diagnostic port.

 

 

Edited March 5, 2021 by kraze
Updated video

[Erick194]

@kraze Oh that's cool dude, now that I remember I have to finish and post the excerpts from Orcs and Elves and wolfenstein rpg. 

Edited January 5, 2021 by Erick194