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());
}
}
/// <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));
}
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;
}
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]);
}
}
private static Dictionary <Vector2, TerrainChunkPart> CreateChunkParts(int uniformSize, MeshSettings meshSettings, TerrainChunk terrainChunk)
{
Dictionary <Vector2, TerrainChunkPart> chunkParts = new Dictionary <Vector2, TerrainChunkPart>();
int chunkRangeHalf = Mathf.FloorToInt(meshSettings.ChunkPartSizeRoot / 2f); // ONLY WORKS FOR UNEVEN NUMBERS AT THE MOMENT
for (int x = -chunkRangeHalf; x <= chunkRangeHalf; x++)
{
for (int z = -chunkRangeHalf; z <= chunkRangeHalf; z++)
{
Vector2 chunkPartCoord = terrainChunk.Coord * meshSettings.ChunkPartSizeRoot + new Vector2(x, z);
Vector3 partWorldPosition = new Vector3(terrainChunk.Bounds.size.x / meshSettings.ChunkPartSizeRoot * chunkPartCoord.x, 0f, terrainChunk.Bounds.size.y / meshSettings.ChunkPartSizeRoot * chunkPartCoord.y);
chunkParts.Add(chunkPartCoord, new TerrainChunkPart(chunkPartCoord, partWorldPosition, terrainChunk));
}
}
return(chunkParts);
}
public void RequestMesh(HeightMap heightMap, MeshSettings meshSettings)
{
HasRequestedMesh = true;
ThreadedDataRequester.RequestData(() => MeshGenerator.GenerateTerrainMesh(heightMap.Values, meshSettings, lod), OnMeshDataReceived);
}
/// <summary>
/// Generates a MeshData object that can be used to construct a mesh.
/// </summary>
/// <param name="map">The map values.</param>
/// <param name="meshSettings">The settings for the mesh.</param>
/// <param name="levelOfDetail">0 for highest detail.</param>
public static MeshData GenerateTerrainMesh(float[,] map, MeshSettings meshSettings, int levelOfDetail)
{
int skipIncrement = (levelOfDetail == 0) ? 1 : levelOfDetail * 2;
int numVertsPerLine = meshSettings.NumVertsPerLine;
Vector2 topLeft = new Vector2(-1, 1) * meshSettings.MeshWorldSize / 2f;
MeshData meshData = new MeshData(numVertsPerLine, skipIncrement, meshSettings.UseFlatShading);
int[,] vertexIndicesMap = new int[numVertsPerLine, numVertsPerLine];
int meshVertexIndex = 0;
int outOfMeshVertexIndex = -1;
for (int y = 0; y < numVertsPerLine; y++)
{
for (int x = 0; x < numVertsPerLine; x++)
{
bool isOutOfMeshVertex = y == 0 || y == numVertsPerLine - 1 || x == 0 || x == numVertsPerLine - 1;
bool isSkippedVertex = x > 2 && x < numVertsPerLine - 3 && y > 2 && y < numVertsPerLine - 3 && ((x - 2) % skipIncrement != 0 || (y - 2) % skipIncrement != 0);
if (isOutOfMeshVertex)
{
vertexIndicesMap[x, y] = outOfMeshVertexIndex;
outOfMeshVertexIndex--;
}
else if (!isSkippedVertex)
{
vertexIndicesMap[x, y] = meshVertexIndex;
meshVertexIndex++;
}
}
}
for (int y = 0; y < numVertsPerLine; y++)
{
for (int x = 0; x < numVertsPerLine; x++)
{
bool isSkippedVertex = x > 2 && x < numVertsPerLine - 3 && y > 2 && y < numVertsPerLine - 3 && ((x - 2) % skipIncrement != 0 || (y - 2) % skipIncrement != 0);
if (!isSkippedVertex)
{
bool isOutOfMeshVertex = y == 0 || y == numVertsPerLine - 1 || x == 0 || x == numVertsPerLine - 1;
bool isMeshEdgeVertex = (y == 1 || y == numVertsPerLine - 2 || x == 1 || x == numVertsPerLine - 2) && !isOutOfMeshVertex;
bool isMainVertex = (x - 2) % skipIncrement == 0 && (y - 2) % skipIncrement == 0 && !isOutOfMeshVertex && !isMeshEdgeVertex;
bool isEdgeConnectionVertex = (y == 2 || y == numVertsPerLine - 3 || x == 2 || x == numVertsPerLine - 3) && !isOutOfMeshVertex && !isMeshEdgeVertex && !isMainVertex;
int vertexIndex = vertexIndicesMap[x, y];
Vector2 percent = new Vector2(x - 1, y - 1) / (numVertsPerLine - 3);
Vector2 vertexPosition2D = topLeft + new Vector2(percent.x, -percent.y) * meshSettings.MeshWorldSize;
float height = map[x, y];
if (isEdgeConnectionVertex)
{
bool isVertical = x == 2 || x == numVertsPerLine - 3;
int dstToMainVertexA = ((isVertical) ? y - 2 : x - 2) % skipIncrement;
int dstToMainVertexB = skipIncrement - dstToMainVertexA;
float dstPercentFromAToB = dstToMainVertexA / (float)skipIncrement;
Coord coordA = new Coord((isVertical) ? x : x - dstToMainVertexA, (isVertical) ? y - dstToMainVertexA : y);
Coord coordB = new Coord((isVertical) ? x : x + dstToMainVertexB, (isVertical) ? y + dstToMainVertexB : y);
float heightMainVertexA = map[coordA.x, coordA.y];
float heightMainVertexB = map[coordB.x, coordB.y];
height = heightMainVertexA * (1 - dstPercentFromAToB) + heightMainVertexB * dstPercentFromAToB;
EdgeConnectionVertexData edgeConnectionVertexData = new EdgeConnectionVertexData(vertexIndex, vertexIndicesMap[coordA.x, coordA.y], vertexIndicesMap[coordB.x, coordB.y], dstPercentFromAToB);
meshData.DeclareEdgeConnectionVertex(edgeConnectionVertexData);
}
meshData.AddVertex(new Vector3(vertexPosition2D.x, height, vertexPosition2D.y), percent, vertexIndex);
bool createTriangle = x < numVertsPerLine - 1 && y < numVertsPerLine - 1 && (!isEdgeConnectionVertex || (x != 2 && y != 2));
if (createTriangle)
{
int currentIncrement = (isMainVertex && x != numVertsPerLine - 3 && y != numVertsPerLine - 3) ? skipIncrement : 1;
int a = vertexIndicesMap[x, y];
int b = vertexIndicesMap[x + currentIncrement, y];
int c = vertexIndicesMap[x, y + currentIncrement];
int d = vertexIndicesMap[x + currentIncrement, y + currentIncrement];
meshData.AddTriangle(a, d, c);
meshData.AddTriangle(d, a, b);
}
}
}
}
meshData.ProcessMesh();
return(meshData);
}
