Prior to this change, without realistic breaking, trains would continuously run into the train in front of them. This makes them adjust their speed based on trains in front of them
Prior to this change, trees tended to either cover the entire map like an ancient forest, or alternatively you turn off their growth which breaks industry. Furthermore there are these ugly random tree clumps at the beginning of the game which look like squares on the map someone placed there.
This change adds a new tree placing setting which removes the ugly random clumps and only slightly modifies the initial placement. The actual growth causes trees to bunch up in higher levels as usual but on the lower 4 levels their growth works differently. The number of trees per tile is limited and the trees spread out over a wider area instead of only to the neighboring tile. That spreads them out more and makes for a nicer look.
This also allows cacti to spread, since they can now use that same algorithm and avoid bunching up, but spread as they should.
Prior to this change, the game tended to place towns on mountain tops. Realistic heightmaps had limitations because of this.
This change allows the player to specify that the towns should be generated in the valleys.
Prior to this change, road vehicles would always slowdown in curves. This forces the player to build grid like roads. With new height levels and more mountainous maps and in the absense of diagonal roads this causes unnecessary pain. It should be an option to turn this off, so mountainous maps and curvy roads are not punishing the player unnecessarily. Nobody wants to build grid like roads outside of towns.
Prior to this change, lakes could be very small and could also not be deactivated.
This change allows the deactivation of lake creation and the lake size is now the set size +- 25% instead of anything between 0 and lake_size.
Prior to this change, the use of NewObjects often lead to the problem of players trying to clear those and accidentally destroying a rail station or (when using magic bulldozer) an industry. This action cannot be undone.
This change shows a query making sure the player actually wants to destroy the station or industry.
NOTE: The switch to a std::function no longer allows for the inequality check in ShowQuery in misc_gui. If this was required a different solution has to be found.
