internal static void Generate(Chunk chunk, List <Position> takenPositions)
{
int clutterCount = Settings.Random.Next(MIN_CLUTTER_PER_CHUNK, MAX_CLUTTER_PER_CHUNK + 1);
for (int i = 0; i < clutterCount; i++)
{
//returns number avoiding upper chunk boundaries ensuring cross chunk placements dont touch each other
int xProposedInChunk = Settings.Random.Next(0, Chunk.CHUNK_SIZE - 1);
int zProposedInChunk = Settings.Random.Next(0, Chunk.CHUNK_SIZE - 1);
int yProposed = chunk.HeightMap[xProposedInChunk, zProposedInChunk];
var block = chunk.Blocks[xProposedInChunk, yProposed, zProposedInChunk];
if (block.Type != Block.BlockType.Grass && block.Type != Block.BlockType.Snow)
{
continue;
}
int xProposedInWorld = chunk.Coords.WorldCoordsX + xProposedInChunk;
int zProposedInWorld = chunk.Coords.WorldCoordsZ + zProposedInChunk;
//ensure clutter is not placed too close to another taken coord, otherwise skip it
if (TreeGenerator.IsPositionTaken(takenPositions, xProposedInWorld, zProposedInWorld, DISTANCE_TOLERANCE))
{
continue;
}
//place the clutter
var clutterType = (ClutterType)Settings.Random.Next(0, 7); //0-6
takenPositions.Add(new Position(xProposedInWorld, yProposed, zProposedInWorld));
chunk.Clutters.Add(new Clutter(new Coords(xProposedInWorld, yProposed + 1, zProposedInWorld), clutterType)); //add new clutter to the chunk collection
}
}
public static void Generate()
{
Debug.WriteLine("Generating new world: " + Settings.WorldFilePath);
Debug.WriteLine("World type: {0}, Size {1}x{2}", WorldData.WorldType, WorldData.SizeInChunksX, WorldData.SizeInChunksZ);
Settings.Random = string.IsNullOrEmpty(WorldData.RawSeed) ? new Random() : new Random(GetNumericSeed());
WorldData.Chunks = new Chunks(WorldData.SizeInChunksX, WorldData.SizeInChunksZ);
const int MIN_SURFACE_HEIGHT = Chunk.CHUNK_HEIGHT / 2 - 40; //max amount below half
const int MAX_SURFACE_HEIGHT = Chunk.CHUNK_HEIGHT / 2 + 8; //max amount above half
var heightMap = PerlinNoise.GetIntMap(MIN_SURFACE_HEIGHT, MAX_SURFACE_HEIGHT, 8);
var mineralMap = PerlinNoise.GetFloatMap(1, MAX_SURFACE_HEIGHT - 5, 2);
var chunkCount = 1;
foreach (Chunk chunk in WorldData.Chunks)
{
Settings.Launcher.UpdateProgressInvokable(string.Format("Generating Chunks {0} / {1}", chunkCount, WorldData.SizeInChunksX * WorldData.SizeInChunksZ), chunkCount, WorldData.SizeInChunksX * WorldData.SizeInChunksZ);
//bm: we can't run this in parallel or the results will not be deterministic based on our seed.
GenerateChunk(WorldData.Chunks[chunk.Coords.X, chunk.Coords.Z], heightMap, mineralMap);
chunkCount++;
}
//loop through chunks again for actions that require the neighboring chunks to be built
Debug.WriteLine("Completing growth in chunks and building heightmaps...");
Settings.Launcher.UpdateProgressInvokable("Completing growth in chunks...", 0, 0);
foreach (Chunk chunk in WorldData.Chunks)
{
//build heightmap here only so we know where to place trees/clutter (it will get built again on world load anyway)
chunk.BuildHeightMap();
var takenPositions = new List <Position>(); //positions taken by tree or clutter, ensures neither spawn on top of or directly touching another
//generate trees
if (WorldData.GenerateWithTrees)
{
TreeGenerator.Generate(chunk, takenPositions);
}
//generate clutter
ClutterGenerator.Generate(chunk, takenPositions);
}
Settings.Random = new Random(); //reset the random object to ensure the seed is not used for any more random numbers as this could make gameplay predictable
Debug.WriteLine("World generation complete.");
//default sun to directly overhead in new worlds
SkyHost.SunAngleRadians = OpenTK.MathHelper.PiOver2;
SkyHost.SunLightStrength = SkyHost.BRIGHTEST_SKYLIGHT_STRENGTH;
Debug.WriteLine("New world saving...");
Settings.Launcher.UpdateProgressInvokable("New world saving...", 0, 0);
WorldData.SaveToDisk();
Debug.WriteLine("New world save complete.");
}