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Amped2-Recomp v0.1.0

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@bertibertig bertibertig released this 20 Oct 10:11
· 7 commits to main since this release
v0.1.0
df36a00

First public build of Amped2-Recomp: a native PC port of Amped 2 (original Xbox, 2003), made by
statically recompiling the game's Xbox code to C with xboxrecomp.
No emulator.

This is an early, experimental release. On Linux the game boots, the menus run at 60 fps and you can ride
the first mountain (Millicent 1) at about 55 fps, but a lot is still untested. The Windows package is a first
preview: software renderer only and very slow, not playable yet (see Platform status).

⚠️ No game files included. You need your own, legally obtained copy of Amped 2 for the Xbox, PAL/EU
version (title ID 4D530041). Other versions are not tested. Never share game files.

Getting started

  1. Download the package for your system below and unpack it: Amped2-Recomp-v0.1.0-linux-x86_64.tar.gz
    (tar xzf …) or Amped2-Recomp-v0.1.0-windows-x86_64.zip.
  2. Prepare the game files (next section) in the package's game_files/ folder.
  3. Start the game from the package folder:
    • Linux: ./run.sh
    • Windows: double-click run.bat (console output goes to run.log)

Linux needs glibc 2.39+ (Ubuntu 24.04+, Fedora 40+, Arch, SteamOS 3.6+), SDL2 and a Vulkan driver
(sudo apt install libsdl2-2.0-0 libvulkan1 mesa-vulkan-drivers).

Windows needs Windows 10 or 11 (x86-64). There is no macOS package yet.

Preparing the game files

The game data always comes from your own Amped 2 disc; nothing of it is in this repository or in a release.
Supported is the PAL/EU version (title ID 4D530041, default.xbe SHA-1
38e63cd016bf084d999e0a911933a52191bfc378); other versions are not tested.

  1. Make a disc image (.iso) of your Amped 2 Xbox disc, e.g. on a modded Xbox or with an Xbox-compatible DVD
    drive. Both a full disc image (Redump style) and a game-partition XISO work.

  2. Extract the image with extract-xiso (AUR extract-xiso-git) or
    xdvdfs (cargo install xdvdfs-cli):

    extract-xiso -x "Amped 2.iso" -d game_files

    or xdvdfs unpack "Amped 2.iso" game_files. Already have an extracted disc folder? Copy its contents instead.

  3. Put it in the right place: a folder named game_files
    next to run.sh / run.bat in the unpacked package folder (the package already has an empty one with a short
    README in it).

  4. Check the layout: default.xbe must sit directly in game_files/, not in a subfolder (no
    game_files/Amped 2/default.xbe). The whole disc is about 4 GB; keep every file and folder as extracted (the
    letter case of the names does not matter).

Amped2-Recomp-v0.1.0-linux-x86_64/
├── amped2_recomp
├── run.sh
└── game_files/
    ├── default.xbe
    ├── Audio/
    ├── Levels/
    ├── Movies/
    └── … (the rest of the disc)

Without game_files/default.xbe, ./run.sh stops with a message telling you where the files belong. Saves and
the game's cache go to ~/.local/share/xboxrecomp, not into game_files/.

What works

  • Boot with the Microsoft Game Studios logo (skipped by default) and the intro movie, played in real time
  • Audio through the emulated Xbox APU
  • Legal screen, title, profile creation and Choose a Look, main menu, career menu and level select
  • The 3D rider in the menus and on the slope, complete and matching the original
  • Riding: Millicent 1 (Evergreen) loads and plays, with the HUD, the challenge cards and the goals board
  • Keyboard as player 1, XInput/SDL controllers with hotplug and rumble

Features

  • Vulkan renderer: 60 fps in the menus, about 55 fps on the slope; the Xbox vertex programs run on the GPU.
    The software renderer (AMPED2_RENDERER=cpu) is kept as a slow reference.
  • Controllers: Xbox 360/One/Series, 8BitDo (X-input), anything SDL2 knows; plug in at any time; the game's
    vibration goes to the pad's motors
  • Keyboard with Amped 2 keys: WASD to steer, Space to accelerate/jump, U/O for lip tricks and jibs, IJKL for
    grabs, Escape to pause, Tab to reset (works the same on QWERTZ/AZERTY)
  • Skippable logo and intro (AMPED2_SKIP_LOGOS, AMPED2_SKIP_INTRO)

Platform status

  • Linux (x86-64): tested on Garuda Linux (Arch) with an NVIDIA GPU (proprietary driver): boot, menus and a
    ride on Millicent 1. Other GPUs and drivers (AMD, Intel, Mesa) are not tested yet.
  • Steam Deck: not tested yet.
  • Windows: experimental, not playable yet.
    • Software (CPU) renderer only, very slow: about 4-6 fps in the menus and about 2 fps on the slope. The
      Vulkan renderer is Linux-only for now; porting it to Windows is planned.
    • Only tested on Linux with Wine 11.20 and GE-Proton 11-11 – not on a real Windows PC yet. Under both, run.bat
      boots the game, a new profile is created and saved, and the menus and a ride on Millicent 1 work (slowly).
      Reports from Windows 10/11 are very welcome.
    • Under Wine/Proton the movies stay black and there is no music; sound effects work.
    • The software renderer draws stray triangles stretched out from trees and other objects.
  • macOS: not started.

Known issues

  • Music can stop suddenly while playing; it comes back later, but very quiet and with crackling.
  • Only the menus and the first rides of the career (Millicent 1) have been checked; a full career, saving and
    loading over several sessions and multiplayer are not verified yet.
  • Rides run at about 55 fps instead of a steady 60.
  • The rider has no shadow yet.
  • Internal resolution fixed at 640x480 (4:3), window only: no resolution scaling, widescreen or full-screen modes
    yet – planned.
  • Audio is mixed to stereo (no 5.1 yet).
  • The save folder ~/.local/share/xboxrecomp (its Cache part) is shared with SSX3-Recomp.
  • Windows is experimental and not playable yet (see Platform status): software renderer only, very slow,
    black movies and no music under Wine/Proton, stray triangles in the software renderer.

Please report bugs at Issues with the console output
(./run.sh 2>&1 | tee run.log; on Windows the run.log next to run.bat).

For developers

  • The Windows package was added to this release after the tag: it is built from the v0.1.0 sources plus two
    build changes (MinGW links xinput1_4.dll instead of xinput1_3.dll; run.bat sets
    RECOMP_WIN_PLACEHOLDER=1, without which Wine/Proton cannot map the GPU's tiled memory window at 0xF0000000 and
    the game crashes at the first movie frame). The Linux package is unchanged.

Building it yourself

See the README: pipeline and build directly on
Linux, or in the Ubuntu 24.04 container (scripts/docker.sh); scripts/build_win.sh for the MinGW cross build.

License

GPL-3.0-or-later. Third-party licenses (xboxrecomp: MIT and LGPL-2.1 parts, volk: MIT) are in the package's
licenses/ folder. Unofficial fan project, not affiliated with or endorsed by Microsoft.

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