Magic Carpet 2 HD

Based off the Reverse engineering of game Magic Carpet 2 from assembler to c/c++ language by Tomas Versly
Forked from Tomas Vesely's repo here: https://github.com/turican0/remc2

Tomas has done amazing work, not only reverse engineering this code but updating it to use more modern memory allocation and use the SDL library for input and sound. He has even increased the sprite resolutions.

My intention is to make a patch for Magic Carpet 1 and 2 (GOG editions) that initially will:

• Add more screen resolution options
• Increase draw distance
• Seperate Render and Simulation code so that game speed is not dependent of FPS (or fix FPS)
• Enable local multiplayer without NETBIOS

STATUS: Code now runs though the first level of MC2 (in both Windows and Linux). Anyone with the GOG edition can download this repo, extract the Game Assets (from a legal GOG copy of the game) and run it.

Build Status:

Branch	Windows	Linux
master
development

Steps: to build and run this code

Windows:

• 1: Pull the development branch
• 2: Open the Solution file "\libogg\win32\VS2015\libogg_static.sln" and build it. This builds the libogg library
• 3: Close that solution and open "remc2.sln" Select "x86" in build config.
• 4: Build the code (you can only compile only 32-bit binary version atm)
• 5: Purchase a copy of Magic Carpet 2 from GOG here: https://www.gog.com/game/magic_carpet_2_the_netherworlds
• 6: Install the Game. Copy the "NETHERW" directory to "remc2\Debug" Folder
• 7: Copy the "Extract" folder to your Game Directory, run extract-GOG-CD.bat. The CD Data will now be copied to a directory called "CD_Files" in the "Extract" directory
• 8: Move "CD_Files" directory into the "remc2\Debug" Folder
• 9: Run

Linux:

Building on Linux

There are two ways to build the Linux binary.

• Building a native binary

  1. Pull the development branch using GitHub (this is much easier if you install Visual Studio Code and install C++ Extension, cmake, cmake tools)
  2. Make sure that you have CMake, make and a recent GCC installed
     • To install them on Debian/Pi OS: sudo apt install -y cmake
  3. Make sure that you have the following dependencies as development packages (the exact names depend on your distro)
  • SDL2
  • SDL2_mixer
  • SDL2_image
  • SDL2_ttf
  • libpng
  • boost
  • boost-system
    • To install them on Debian/Pi OS: sudo apt install libsdl2-dev libsdl2-image-dev libsdl2-mixer-dev libsdl2-ttf-dev libpng-dev libpng++-dev libboost-system-dev
  4. Build the code

  export BUILDTYPE=Debug # or Release
  mkdir -p build/${BUILDTYPE}
  cd build/${BUILDTYPE}
  cmake -DCMAKE_BUILD_TYPE=${BUILDTYPE} -DCMAKE_INSTALL_PREFIX=./inst [SOURCE_DIR]
  make
  make install
  

  5. Magic Carpet 2 is now built. you can find it in build/Debug/inst/bin
     • You can also run the code with sanitizers (leak, address, undefined behaviour, pointers) by passing -DUSE_SANITIZERS=True to CMake
     • Additionally you can compile the code with clang-tidy analyzers by passing -DUSE_CLANG_TIDY=True to CMake

• Building a flatpak

  1. Pull the development branch
  2. Build the flatpak

  cd flatpak
  ./build.sh
  

  3. Run the remc2 flatpak via

  flatpak run com.github.thobbsinteractive.magic-carpet-2-hd
  

Providing the original game assets to remc2 and running the game

In order to run the game you need to own a copy of Magic Carpet 2. We provide a script to extract the assets from the GOG version. The following steps extract the required files from the original.

1. Purchase a copy of Magic Carpet 2 from GOG here: https://www.gog.com/game/magic_carpet_2_the_netherworlds
2. Download the Windows "Offline Backup Game Installer"

• Open GOGGalaxy
• Install the game
• Go to the "Extras" section of a GOG Magic Carpet 2
• In the Offline Backup Installers Windows section:
  • Click the Download button
  • Wait for the download to complete
  • Click the Downloads menu item on the left.
  • Click to open the containing folder and copy it to the Downloads folder on your Linux PC

3. Make sure that you have innoextract and dosbox installed
   • To install them on Debian/Pi OS:sudo apt install innoextract dosbox
4. Run the extract-GOG-CD.sh script from the EXTRACT directory of the remc2 source code and provide the path to the GOG installer as well as a path where the files should be extractet to. Example:

./extract-GOG-CD.sh ~/Downloads/setup_magic_carpet_2_1.0_\(28044\).exe ~/.local/share/remc2

5. NOTE: The game will search in the following locations (and in this particular order) for the game assets. For the flatpak only the first two locations can be used.
   1. $XDG_DATA_HOME/remc2/
   2. $HOME/.local/share/remc2
   3. next to the remc2 binary
6. Run the remc2 executable in install directory

cd /Documents/repos/magic-carpet-2-hd/build/${BUILDTYPE}/inst/bin
./remc2

Configuring remc2

Some settings can be configured via the file config.ini. An example for this file can be found in the root directory of the remc2 repository. The game will search for this file in the following locations and this particular order. For the flatpak only the first two locations can be used.

1. $XDG_CONFIG_HOME/remc2
2. $HOME/.config/remc2
3. next to the remc2 binary

ROADMAP:

MILLSTONE 1

• [x] Get solution runnable from Visual Studio 2019 build, with minimum of setup. Cut down on unnecessary extra files and libraries and use nuget instead.
• [x] Refactor reverse engineered code into seperate classes where possible.

MILLSTONE 2

• [x] Add resolution support
• [ ] Implement Open GL render
• [ ] Implement a (platform independent) Launch menu to adjust settings in config.ini before launch

MILLSTONE 3

• [ ] Improve sounds and music using updated original scores and directional sounds in game
• [ ] Implement a wix sharp .msi installation for new .exe to make patching the and running existing game simple and something similar for the Linux versions

MILLSTONE 4

• [ ] Get basic LAN/IPv4 multiplayer working again (Tom is currently making great progress on this!)

MILLSTONE 5

• [ ] Get Magic Carpet 1 working using this engine. Ideally with original music and graphics.

LONG TERM GOALS

• Add VR support back into the game (yes it was originally supported! This game was waaay ahead of its time)
  
• Implement online multiplayer match making

If you know a bit about game development or want to help out, branch away or email me here: [email protected] or find us on Discord here: https://discord.gg/mFMRUVeu

Development Guide

• The Project is compiled as C++17.
• If you re-name a method include the id from the original method name as this makes it easier to track changes from the generated code. e.g. void sub_19CA0_sound_proc5(unsigned __int8 a1) was renamed to void ChangeSoundLevel_19CA0(uint8_t option)
• Please follow the general style of the refactored code. Upper Camel Case (Pascal Case) for Class/Method names. Camel Case for variables. 'm_' for class members. GameRenderHD.cpp is a good example of the style.
• Where possible (if writting new code) please use the fixed width types. https://en.cppreference.com/w/cpp/types/integer
• Be careful with making logic changes to the code and Test, Test, Test! I recommend playing the first level all the way though. Then the first Cave level (4) and I also recomend Level 5 as you have a nice mix of AI to kill and a cutscene at level completion.