public CombinedTerrainTileMesh(CombinedMeshType combinationType, int lodResolution, int lodDistance, int lodSize)
{
type = combinationType;
mesh = new Mesh();
mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
int numTiles = 0;
if (type == CombinedMeshType.Corner)
{
numTiles = lodSize * lodSize;
}
else if (type == CombinedMeshType.Edge)
{
numTiles = (((lodDistance - lodSize) * 2) + 1) * lodSize;
}
else
{
numTiles = ((lodSize * 2) + 1) * ((lodSize * 2) + 1);
}
int numVertices = ((lodResolution + 1) * (lodResolution + 1)) * numTiles;
int numTriangles = lodResolution * lodResolution * 2 * numTiles;
vertices = new List <Vector3>(numVertices);
normals = new List <Vector3>(numVertices);
uvs = new List <Vector2>(numVertices);
triangles = new List <int>(numTriangles);
}
// Start is called before the first frame update
void Start()
{
// Initialise variables
tileSize = size / numTiles;
prevPlayerTilePos = Vector2Int.one * int.MaxValue;
map = new Map(mapSeed, size, numTiles, tileResolution, heightmapProvider);
// Create mesh renderers and filters
int numLODs = lodDistances.Length;
lodGameObjects = new List <GameObject> [numLODs];
tileMeshes = new TerrainTileMesh[numTiles, numTiles];
tileLODs = new int[numTiles, numTiles];
tileEdgeTransitionFlags = new int[numTiles, numTiles];
lodMeshes = new List <CombinedTerrainTileMesh> [numLODs];
meshRenderers = new List <MeshRenderer> [numLODs];
meshFilters = new List <MeshFilter> [numLODs];
// Create LOD meshes
for (int i = 0; i < numLODs; i++)
{
lodGameObjects[i] = new List <GameObject>(8);
lodMeshes[i] = new List <CombinedTerrainTileMesh>(8);
meshRenderers[i] = new List <MeshRenderer>(8);
meshFilters[i] = new List <MeshFilter>(8);
for (int m = 0; m < 8; m++)
{
lodGameObjects[i].Add(new GameObject());
lodGameObjects[i][m].transform.parent = transform;
lodGameObjects[i][m].name = "LOD " + i + " mesh " + m;
lodGameObjects[i][m].layer = LayerMask.NameToLayer(terrainLayer);
CombinedMeshType meshType = CombinedMeshType.Corner;
if (i == 0)
{
meshType = CombinedMeshType.Center;
}
else if (m > 3)
{
meshType = CombinedMeshType.Edge;
}
int prevLODDistance = (i == 0) ? 0 : lodDistances[i - 1];
lodMeshes[i].Add(new CombinedTerrainTileMesh(meshType, tileResolution / MathUtilities.Pow(2, i), lodDistances[i], Mathf.Max(0, lodDistances[i] - prevLODDistance)));
meshRenderers[i].Add(lodGameObjects[i][m].AddComponent(typeof(MeshRenderer)) as MeshRenderer);
meshRenderers[i][m].sharedMaterial = terrainMaterial;
meshFilters[i].Add(lodGameObjects[i][m].AddComponent(typeof(MeshFilter)) as MeshFilter);
meshFilters[i][m].mesh = lodMeshes[i][m].mesh;
}
}
// Create tile objects
for (int x = 0; x < numTiles; x++)
{
for (int z = 0; z < numTiles; z++)
{
tileLODs[x, z] = -1;
tileMeshes[x, z] = new TerrainTileMesh(tileResolution);
}
}
// Initialise heightmap provider
heightmapProvider.Init(mapSeed, size);
// Start mesh updater thread
ThreadStart MeshUpdaterThreadStart = MeshUpdateThread;
meshUpdaterThread = new Thread(MeshUpdaterThreadStart);
meshUpdateThreadStatus = (int)MeshUpdateThreadStatus.Idle;
meshUpdaterThread.Start();
}
