Build #77 - Fixed tunnels, various bug fixes — Derail Valley Steam update #563769

Hey all, We've got more bug fixes this week! There are many more changes in progress, but they are mostly piling up for the big Hazmat update coming next month, so stay tuned! Fixed impassable tunnels for good: As "caved in" tunnels have been a recurring issue, we took the time to entirely rework how the game determines tunnel holes. This change should eliminate the possibility of trains hitting terrain in tunnel entrances, and also prevents visual glitches where holes would disappear, fully or partially. There are still a rare few tunnels placed in such a way that terrain can be still seen in them (e.g. east of Harbor), but this will be fixed separately in the next world update and is now harmless. Bug fixes, improvement to controls and performance: We're continually working on bug fixes, and the goal is to reduce them to the absolute possible minimum by the time Hazmat update rolls out...