RotR - A Rimworld mod allowing road construction on the world map
With RotR, caravans can create a construction site on the world map, players can then select a type of road, click from neighbouring tile to neighbouring tile until they reach their desired goal. If you make a mistake, clicking on a planned section of road will remove it and all sections after it. Clicking on the Construction Site or right-clicking anywhere will finalise the construction.
By using resources and colonists with Construction skill, the current section (or leg) can be built. A progress bar is shown on the world map. Once a leg is finished, the caravan automatically moves on to the next leg. Note : Road legs must be built in the order they were placed on the world map.
Having all colonists down, resting during night time, or a moving caravan will prevent work. Similarly, some roads require a certain percentage of the workforce to have a certain construction skill. If only a lower percentage is available, work will be reduced. If no colonist in the caravan has the required skill, work will be impossible. Prisoners don't work.
A site can be removed by selecting it and clicking on the "Cancel Construction" button. A Caravan does not need to be there to do so. All resources spent so far will be lost.
Building costs modifiers
Construction costs have two components : base costs that depend on the road and modifiers that depend on the terrain. Roads cost more at higher elevation, starting from 1000m. Hills and swamps also have an effect, which can be checked when clicking on a site. When ISR2G is not used, the total cost can be further reduced from 100% down to 10% in the settings. Anything lower than 100% is probably quite unrealistic, but feel free to use the option.
It is not necessary to bring all resources at once in one caravan. A fraction is enough for a certain amount of work. However, it is necessary to bring each material with you.
As an example a tenth of the asphalt road: 360 Stone, 60 Steel, 30 Chemfuel is enough material for a tenth of the work (180 work.)
When building a road over an existing one that is slower, 30% of the cost of the existing road will be deducted from the cost of the new road, as long as both roads use that same resource (e.g. A dirt road will provide 120 work and 36 wood when upgrading to a Stone road)
Allied factions can help building roads
Impact on movement
The roads of RotR do not only provide a customised movement cost multiplier compared to the base game, they also cancel some or all of the movement cost of the terrain.
See the summary below to see what percentage of a specific terrain feature is cancelled, depending on the road type. Note that these effects apply both to generated roads (from the base game) and built roads from RotR.