Steam Locomotive Continued (2.0 + SE)

A steam locomotive fuelled by real coal, wood or solid fuel plus water pumped straight into its tank. Fuel and water are consumed gradually to build up steam pressure over time (fire, steam and water gauges in a boiler panel on the locomotive's window); pressure caps your top speed, and it decays if you let the fire or the water run dry. No water on board means no pressure, no matter how much fuel is loaded. Coal and solid fuel give the full speed ceiling; wood is slower but cleaner. Slower than diesel overall. Third step of the steam -> diesel -> electric train progression ladder. Locomotive art from Steam Locomotive (steamtrain-redux-redux) by IonShield (Unlicense/public domain). Framework based on fluidTrains by ksmonkey123 (MIT).