void CreateTerrain(IntSize3 size)
{
var random = Helpers.Random;
var terrain = new TerrainData(size);
var tg = new DungeonTerrainGenerator(terrain, random);
tg.Generate(1);
TerrainHelpers.CreateSoil(terrain, 9999);
TerrainHelpers.CreateVegetation(terrain, random, 9999);
m_rooms = tg.Rooms;
m_terrainData = terrain;
}