private TerrainDef TerrainFrom(IntVec3 c, Map map, float elevation, float fertility, RiverMaker river, bool preferSolid)
{
TerrainDef terrainDef = null;
if (river != null)
{
terrainDef = river.TerrainAt(c, true);
}
if (terrainDef == null && preferSolid)
{
return(GenStep_RocksFromGrid.RockDefAt(c).building.naturalTerrain);
}
TerrainDef terrainDef2 = BeachMaker.BeachTerrainAt(c, map.Biome);
if (terrainDef2 == TerrainDefOf.WaterOceanDeep)
{
return(terrainDef2);
}
if (terrainDef != null && terrainDef.IsRiver)
{
return(terrainDef);
}
if (terrainDef2 != null)
{
return(terrainDef2);
}
if (terrainDef != null)
{
return(terrainDef);
}
for (int i = 0; i < map.Biome.terrainPatchMakers.Count; i++)
{
terrainDef2 = map.Biome.terrainPatchMakers[i].TerrainAt(c, map, fertility);
if (terrainDef2 != null)
{
return(terrainDef2);
}
}
if (elevation > 0.55f && elevation < 0.61f)
{
return(TerrainDefOf.Gravel);
}
if (elevation >= 0.61f)
{
return(GenStep_RocksFromGrid.RockDefAt(c).building.naturalTerrain);
}
terrainDef2 = TerrainThreshold.TerrainAtValue(map.Biome.terrainsByFertility, fertility);
if (terrainDef2 != null)
{
return(terrainDef2);
}
if (!GenStep_Terrain.debug_WarnedMissingTerrain)
{
Log.Error(string.Concat(new object[]
{
"No terrain found in biome ",
map.Biome.defName,
" for elevation=",
elevation,
", fertility=",
fertility
}), false);
GenStep_Terrain.debug_WarnedMissingTerrain = true;
}
return(TerrainDefOf.Sand);
}