Track Line Upgrade

Adds a new tool to the rail tools: Track Line Upgrade. Hover over any track and the whole line is highlighted, from buffer stop or station to the next station. One click replaces every segment of that line with the selected track type. Features: - Choose the target track type (all base game and modded track types) - Catenary: keep the existing electrification, electrify the whole line or remove the catenary - At switches: continue straight along the main line and upgrade the switches and crossovers too, continue on the main line only, or stop at the first switch - Stations: the station tracks the line runs into are upgraded as well (can be turned off) - Preview with segment count, length and cost before you click - Easy to use: tracks are picked even if the cursor is a few meters next to them - Segments the game does not allow to upgrade (e.g. curves too tight for high speed track) are skipped and reported - Stops cleanly when you run out of money The mod only uses the regular game commands, so costs are the same as upgrading by hand.