MapRegions

Assigns a luxury to each region. No luxury can be assigned to too many regions. Some luxuries are earmarked for city states. The rest are randomly distributed or don't occur att all in the map

Recursive function, divides a region into numDivisions pars of equal-ish fertility

Evaluates a tile for starting position, setting isGoodStart and startScore in MapGenTileData. Assumes that all tiles have corresponding MapGenTileData.

Attempts to find a good start close to the center of region. Calls setRegionStart with the position

Creates numRegions number of balanced regions for civ starting locations.

Attempts to improve the start on startTile as needed to make it decent. Relies on startPosition having been set previously. Assumes unchanged baseline values ie citizens eat 2 food each, similar production costs If minorCiv is true, different weightings will be used.

Adds numbers to tileData in a similar way to closeStartPenalty, but for different types

Places all Luxuries onto tileMap. Assumes that assignLuxuries and placeMinorCivs have been called.

Attempts to place major deposits in a tileList consisting exclusively of terrain tiles. Lifted out of the main function to allow postponing water resources.

Assigns civs to regions or "uninhabited" land and places them. Depends on assignLuxuries having been called previously. Note: can silently fail to place all city states if there is too little room. Currently our GameStarter fills out with random city states, Civ V behavior is to forget about the discarded city states entirely.

Given a tileList and possible resourceOptions, will place a resource on every frequency tiles. Tries to avoid impacts, but falls back to lowest impact otherwise. Goes through the list in order, so pre-shuffle it! Assumes all tiles in the list are of the same terrain type when generating weightings, irrelevant if only one option. Respects terrainsCanBeFoundOn when there is only one option, unless forcePlacement is true.

Splits a region in 2, with the first having firstPercent of total fertility

Attempts to place amount on tiles, checking tiles in order. A ratio below 1 means skipping some tiles, ie ratio = 0.25 will put a resource on every 4th eligible tile. Can optionally respect impact flags, and places impact if baseImpact>= 0. Returns number of placed resources.

Attempts to randomly place civs from civsToPlace in tiles from tileList. Assumes that tileList is pre-vetted and only contains habitable land tiles. Will modify both civsToPlace and tileList as it goes!