A simple drag-and-drop tool for older CDP files (Trainz 2004–2009).
This is where the heavy lifting happens. The CDP extractor reads the data chunk by chunk, runs it through a ZLIB decompression algorithm, and writes the raw binary data to your hard drive. Unlike simply renaming a file (e.g., .cdp to .zip), this requires actual computational work because the data is scrambled and compacted. trainz cdp extractor work
Week 1–2: Requirements, sample corpus collection, format research. Week 3–4: Core unpacking, manifest parsing, basic index output. Week 5–6: Texture extraction and conversion, thumbnailing. Week 7–8: Model parsing (using Assimp) and fallback for proprietary types. Week 9: Dependency resolution and reporting. Week 10: Performance optimizations, parallelism. Week 11: Security hardening, license handling, tests. Week 12: Documentation, CLI options, packaging release. A simple drag-and-drop tool for older CDP files
Many users simply double-click a CDP to install it via Content Manager. So why extract? Here are five critical reasons: Many users simply double-click a CDP to install
In the world of Trainz (a popular train simulator by N3V Games), CDP stands for Content Dispatcher Package. It’s the standard file format for distributing custom assets like locomotives, routes, scenery, and rolling stock.
A CDP Extractor (often a standalone tool or a feature within Trainz Content Manager) reverses the packaging process. Here’s exactly how it works:
You cannot use generic software. Below are the three most reliable tools for the job. All are free or built into Trainz.
