Some initial testing showed that we can use void TestMapFromCoord(int3 Coord, CGameEditorPluginMap::ECardinalDirections Dir); to start at an integer coordinate. But that uses the basic shootmania arena mode.
Trying to launch into test mode using the TrackMania/TM_RaceTest_Local.Script.txt mode did not seem to work and actually locked up the editor. More investigation is needed here.
There appears to be some *.LaunchedCP.Gbx files in the ProgramData cache that may be related to this. It bears an investigation as to what might be in those files.
Some initial testing showed that we can use
void TestMapFromCoord(int3 Coord, CGameEditorPluginMap::ECardinalDirections Dir);
to start at an integer coordinate. But that uses the basic shootmania arena mode. Trying to launch into test mode using theTrackMania/TM_RaceTest_Local.Script.txt
mode did not seem to work and actually locked up the editor. More investigation is needed here.