Debugging CARLA's Digital Twin Tool: Getting the OSM-to-Map Pipeline Running
· 9 min read
CARLA ships an experimental Digital Twin Tool that turns a region of OpenStreetMap data into a procedurally generated 3D driving environment — road network, buildings, and all — directly inside the Unreal Engine editor. I wanted to try it on a small Plymouth region. What I actually got was a multi-day debugging session across a C++ renderer, a Blueprint-facing plugin, and the Unreal Editor itself before the pipeline would even run end-to-end. This post is about that debugging process, not a victory lap — the generated map still has real problems, which I'll get into at the end.