public static ResourceMap GenerateResourceMap(int size, ResourceMapSettings settings, Vector2 sampleCenter, BiomeMap biomeMap, HeightMap heightMap)
{
size -= 1; // To avoid overlap with other chunks on edges
float[,] values = new float[size, size];
// Create a unique seed for this chunk
System.Random randomNum = new System.Random((int)(0.5 * (sampleCenter.x + sampleCenter.y) * (sampleCenter.x + sampleCenter.y + 1) + sampleCenter.y + settings.NoiseSettings.seed));
List <ResourcePoint> resourcePoints = new List <ResourcePoint>();
for (int x = 0; x < size; x++)
{
for (int z = 0; z < size; z++)
{
float random = randomNum.Next(0, 100) / 100f;
Biome biome = biomeMap.GetBiome(x, z);
if (random > biome.ResourceDensity)
{
int biomeId = (int)biome.BiomeType;
if (TerrainGenerator.BiomeResources.ContainsKey(biomeId) && TerrainGenerator.BiomeResources[biomeId].worldResourceEntries.Count > 0)
{
int resourceIndex = randomNum.Next(0, TerrainGenerator.BiomeResources[biomeId].worldResourceEntries.Count);
resourcePoints.Add(new ResourcePoint(x, z, biomeId, resourceIndex));
}
}
}
}
return(new ResourceMap(values, resourcePoints.ToArray(), settings));
}
public TerrainChunk(Vector2 coord, HeightMapSettings heightMapSettings, BiomeMapSettings biomeMapSettings, ResourceMapSettings resourceMapSettings, MeshSettings meshSettings, LODInfo[] detailLevels, int colliderLODIndex, Transform parent, TerrainViewer viewer, Material terrainMeshMaterial)
{
this.Coord = coord;
this.HeightMapSettings = heightMapSettings;
this.BiomeMapSettings = biomeMapSettings;
this.ResourceMapSettings = resourceMapSettings;
this.MeshSettings = meshSettings;
this.detailLevels = detailLevels;
this.colliderLODIndex = colliderLODIndex;
this.Viewer = viewer;
SampleCenter = coord * meshSettings.MeshWorldSize / meshSettings.MeshScale;
Vector2 position = coord * meshSettings.MeshWorldSize;
Bounds = new Bounds(position, Vector2.one * meshSettings.MeshWorldSize);
MeshObject = new GameObject("Terrain Chunk");
meshRenderer = MeshObject.AddComponent <MeshRenderer>();
meshFilter = MeshObject.AddComponent <MeshFilter>();
meshCollider = MeshObject.AddComponent <MeshCollider>();
meshRenderer.material = terrainMeshMaterial;
MeshObject.AddComponent <TerrainChunkInteraction>().TerrainChunk = this;
MeshObject.transform.position = new Vector3(position.x, 0, position.y);
MeshObject.transform.parent = parent;
MeshObject.layer = parent.gameObject.layer;
SetVisible(false);
lodMeshes = new LODMesh[detailLevels.Length];
for (int i = 0; i < detailLevels.Length; i++)
{
lodMeshes[i] = new LODMesh(detailLevels[i].Lod);
lodMeshes[i].UpdateCallback += UpdateTerrainChunk;
if (i == colliderLODIndex)
{
lodMeshes[i].UpdateCallback += UpdateCollisionMesh;
}
}
MaxViewDistance = detailLevels[detailLevels.Length - 1].VisibleDistanceThreshold;
}
public ResourceMap(float[,] values, ResourcePoint[] resourcePoints, ResourceMapSettings settings)
{
this.values = values;
this.resourcePoints = resourcePoints;
this.settings = settings;
}
public static ObjectPoint[] CreateObjectPoints(int uniformSize, MeshSettings meshSettings, ResourceMapSettings resourceMapSettings, BiomeMap biomeMap, HeightMap heightMap, TerrainChunk terrainChunk)
{
string fileName = $"chunkInfo{terrainChunk.Coord.x}{terrainChunk.Coord.y}.dat";
// Try to load a save file
if (File.Exists(SaveDataManager.WorldDataPath + fileName))
{
return(ObjectMapLoader.LoadObjectMap(terrainChunk, SaveDataManager.WorldDataPath).ObjectPoints);
}
else
{
//ResourceMap resourceMap = ResourceMapGenerator.GenerateResourceMap(uniformSize, resourceMapSettings, terrainChunk.SampleCenter);
ResourceMap resourceMap = ResourceMapGenerator.GenerateResourceMap(uniformSize, resourceMapSettings, terrainChunk.SampleCenter, biomeMap, heightMap);
List <ObjectPoint> tempObjectPoints = new List <ObjectPoint>();
// Resource points to object points
foreach (var resourcePoint in resourceMap.resourcePoints)
{
int x = resourcePoint.x;
int z = resourcePoint.z;
HeightMapLayer layer = heightMap.GetLayer(x + 1, z + 1);
// Don't spawn objects on water.
if (layer.IsWater)
{
continue;
}
float height = heightMap.Values[x + 1, z + 1];
Vector3 position = new Vector3(terrainChunk.Bounds.center.x, 0f, terrainChunk.Bounds.center.y) + new Vector3((x - (uniformSize - 1) / 2f) * meshSettings.MeshScale, height, (z - (uniformSize - 1) / 2f) * -meshSettings.MeshScale);
// Create a seeded System.Random for the rotation based on the position
float a = position.x + position.y;
float b = position.z + position.y;
System.Random rand = new System.Random((int)(0.5 * (a + b) * (a + b + 1) + b));
Quaternion rotation = Quaternion.Euler(new Vector3(0f, rand.Next(0, 360), 0f));
int chunkPartSize = uniformSize / meshSettings.ChunkPartSizeRoot + 1;
int coordX = Mathf.FloorToInt(x / chunkPartSize) - 1;
int coordZ = Mathf.FloorToInt(z / chunkPartSize) - 1;
Vector2 chunkPartCoords = terrainChunk.Coord * meshSettings.ChunkPartSizeRoot + new Vector2(coordX, -coordZ);
tempObjectPoints.Add(new ObjectPoint(position, rotation, resourcePoint.biomeId, resourcePoint.worldResourcePrefabId, chunkPartCoords.x, chunkPartCoords.y));
}
return(tempObjectPoints.ToArray());
}
}
private static void FillChunkParts(int uniformSize, ref Dictionary <Vector2, TerrainChunkPart> chunkParts, MeshSettings meshSettings, ResourceMapSettings resourceMapSettings, BiomeMap biomeMap, HeightMap heightMap, TerrainChunk terrainChunk)
{
ObjectPoint[] objectPoints = CreateObjectPoints(uniformSize, meshSettings, resourceMapSettings, biomeMap, heightMap, terrainChunk);
// Fill chunk parts
for (int i = 0; i < objectPoints.Length; i++)
{
Vector2 chunkPartCoords = new Vector2(objectPoints[i].chunkPartCoordX, objectPoints[i].chunkPartCoordZ);
TerrainChunkPart terrainChunkPart = chunkParts[chunkPartCoords];
terrainChunkPart.AddObjectPoint(objectPoints[i]);
}
}
/// <summary>
/// Generates a <see cref="DataMap"/> that consists of a heightmap, biomeMap and resourceMap based on a single size. Divides the resourceMap in <see cref="DataMap.ChunkParts"/> based on <see cref="MeshSettings.ChunkPartSizeRoot"/>
/// </summary>
/// <param name="terrainChunk">The terrain chunk that requested the DataMap.</param>
/// <returns></returns>
public static DataMap GenerateDataMap(MeshSettings meshSettings, HeightMapSettings heightMapSettings, BiomeMapSettings biomeMapSettings, ResourceMapSettings resourceMapSettings, TerrainChunk terrainChunk)
{
int size = meshSettings.NumVertsPerLine;
int uniformSize = size - 2;
// Generate data maps
HeightMap heightMap = HeightMapGenerator.GenerateHeightMap(size, heightMapSettings, terrainChunk.SampleCenter);
BiomeMap biomeMap = BiomeMapGenerator.GenerateBiomeMap(uniformSize, biomeMapSettings, terrainChunk.SampleCenter);
// Create chunk parts
Dictionary <Vector2, TerrainChunkPart> chunkParts = CreateChunkParts(uniformSize, meshSettings, terrainChunk);
FillChunkParts(uniformSize, ref chunkParts, meshSettings, resourceMapSettings, biomeMap, heightMap, terrainChunk);
return(new DataMap(uniformSize, heightMap, biomeMap, chunkParts));
}
