tdu2-runtime-patch

Runtime patch layer for Test Drive Unlimited 2, focused on modding/debugging stability.

This allows for modifying runtime code or hooking functions, without the game forcibly shutting down, as well as features only possible via runtime patching.

The project does not patch anti-piracy or DRM systems. Intended use is preservation/modding/debugging on legitimate game installs.

How it works

The project uses a proxy version.dll that forwards version API calls to Windows system providers (kernelbase/kernel32), then applies runtime patches after the game is loaded.

No files are modified on disk.

Features

• CameraFix Patches camera bugs, applies frame-time–correct movement, and exterior + off-road camera shake/jitter/vibration.

• DLC Car Dealer Fix Allows offline purchase of DLC cars in dealerships by treating them as normal vehicles.

• Change FOV Runtime hook that allows you to change the game's Field of View by a configurable value.

• Overlay runtime panel In-game menu that allows you to configure patches and FOV on the fly. Press F8 to toggle panel visibility. Any changes from the panel are written back to tdu2-runtime-patch.ini.

• AntiTamperFix Disables SecuROM anti-debug triggers and prevents forced shutdowns during runtime modification. This patch is required for patch stability and is always enabled.

Compatibility

Validated on Steam version, Update v034 DLC2 Build16 - EU (sha1:45bfdfe6cb600a32f9c9516bf34e62bea5af2a6)

Warning

Offsets are version-specific. Using a different executable may cause crashes or undefined behavior.

Installation

Download the DLL here, or compile it locally.

1. Copy this project's version.dll and tdu2-runtime-patch.ini next to TestDrive2.exe (game folder).
2. (Optional) Edit tdu2-runtime-patch.ini in that folder.
3. Launch the game. You may press F8 to configure the patches.

Logs are written to tdu2-runtime-patch.log.

Configuration

If the config file does not exist, a default config tdu2-runtime-patch.ini is generated on first launch.

Supported values for booleans: 1/0, true/false, yes/no, on/off

AntiTamperEnabled is enforced to 1. If set to 0, it is ignored to avoid crash-prone states.

Example:

[Patch]
AntiTamperEnabled = 1
DlcCarDealerFixEnabled = 1
CameraFixEnabled = 1
CameraShakeFixEnabled = 1
StartupDelaySeconds = 5

[FOV]
Enabled = 1
Multiplier = 1.2

[Overlay]
D3D9OverlayEnabled = 0

Caution

Disabling AntiTamperFix may cause SecuROM to trigger its security module, causing crashes or odd behaviour.

License

This project is licensed under MIT. See LICENSE.

Community stance

• Keep it free: please do not paywall this project (or derivative builds) as a closed paid product.
• Keep attribution intact: if you redistribute binaries or modified builds, include clear credit to this project and a link to the source repository.
• Keep notices intact: MIT license and copyright notices must remain included in redistributions.

Build

rustup target add i686-pc-windows-msvc
cargo build --release --target i686-pc-windows-msvc