Loading from curved track — Steam Revolution: The Age of Rail Steam update #47443

Based on feedback, I've changed how platform loading works. It is now possible to load and unload train cars from gray curved sections of track as long as those curves are perfectly straight. Previously it was only possible to load from brown straight tracks, but this was unclear as a mechanic and caused confusion. Note that it is not possible to load at track vertices where sections of track join, so avoid mixing curves and straight sections within a station platform.