public static Arena Generate(GameAssets gameAssets, int seed, int biome_count)
{
// Prepare stuff
Arena arena = new Arena(WIDTH, HEIGHT);
arena.Biomes = new Biome[biome_count];
arena.Seed = seed;
List <int>[] biome_tiles_list = new List <int> [biome_count];
Random rnd = new Random(seed);
HaltonSet hlt = new HaltonSet(seed); // halton sequence is used for generating evenly distributed points
// generate temperature map
double[] heatmap = GenerateNoise(seed, 3);
for (int i = 0; i < arena.Heatmap.Length; i++)
{
arena.Heatmap[i] = (int)((heatmap[i] - 0.5) * 30 + 0.8 * (i % arena.Width));
}
// set locations of biome pivots
for (int i = 0; i < biome_count; i++)
{
double halton2 = hlt.Seq2(i + 1);
double halton3 = hlt.Seq3(i + 1);
arena.Biomes[i] = new Biome((int)(halton2 * arena.Width), (int)(halton3 * arena.Height));
biome_tiles_list[i] = new List <int>();
}
// calc which tile belongs in which biome
for (int i = 0; i < arena.Tiles.Length; i++)
{
Point tile_pos = new Point(i % arena.Width, i / arena.Width);
int minDist2 = 40 * 40;
int owner = 0;
// go thru all the pivots and pick the closest to current tile
for (int p = 0; p < biome_count; p++)
{
Point pivot = new Point(arena.Biomes[p].Pivot.X, arena.Biomes[p].Pivot.Y);
// add a bit of noise
Point noise = new Point((int)((rnd.NextDouble() - 0.5) * 2.5), (int)((rnd.NextDouble() - 0.5) * 2));
pivot += noise;
int dist2 = tile_pos.distanceSquared(pivot);
if (dist2 < minDist2)
{
minDist2 = dist2;
owner = p;
}
}
biome_tiles_list[owner].Add(i);
}
// assign the calculated tiles to actual biomes
for (int i = 0; i < biome_count; i++)
{
int pivotPos = arena.Biomes[i].Pivot.X + arena.Biomes[i].Pivot.Y * arena.Width;
arena.Biomes[i].TilesOwned = biome_tiles_list[i].ToArray();
arena.Biomes[i].Asset = gameAssets.PickBiomeAmountBased(rnd, arena.Heatmap[pivotPos]);
}
// time to populate *BIOMES*
// (with tiles)
for (int b = 0; b < biome_count; b++)
{
Biome biome = arena.Biomes[b];
BiomeAsset biome_asset = gameAssets.BiomeAssets[biome.AssetName];
List <TileAsset> special_tiles = new List <TileAsset>();
foreach (TileAsset t in gameAssets.TileAssets.Values)
{
if (t.SpawnDestinations.Length > 0 &&
t.SpawnDestinations.Where(a => a.Name == biome_asset.AssetName).Count() > 0)
{
special_tiles.Add(t);
}
}
for (int t = 0; t < biome.TilesOwned.Length; t++)
{
Tile tile = biome_asset.GenerateTile(rnd);
// test, if current tile shouldn't be special tile
foreach (TileAsset ta in special_tiles)
{
SpawnDestination local = ta.SpawnDestinations.Where(a => a.Name == biome_asset.AssetName).First();
int amt = local.Amount.Evaluate(rnd);
if (amt > 0)
{
tile = ta.GenerateTile(rnd);
}
}
arena.Tiles[biome.TilesOwned[t]] = tile;
}
}
// time to populate *TILES*
for (int i = 0; i < arena.Tiles.Length; i++)
{
Tile tile = arena.Tiles[i];
Asset tileAsset = null;
// tileAsset can be a regular biome asset or a special tile asset
tileAsset = gameAssets.GetAssetByName(tile.AssetName);
foreach (string spwnHere in tileAsset.SpawnsHere)
{
// following asset will be spawned in current tile
SpawnableAsset assetToSpawn = (SpawnableAsset)gameAssets.GetAssetByName(spwnHere);
SpawnDestination local = assetToSpawn.SpawnDestinations.Where(a => a.Name == tile.AssetName).First();
if (assetToSpawn is ItemAsset)
{
int amt = local.Amount.Evaluate(rnd);
}
}
}
return(arena);
}