/** Given a rectangle with corners 'min' and 'max', load 'count' columns within the rectangle, prioritizing the ones closer to the center */
public void LoadNextColsInRange(Vector2i min, Vector2i max, int count)
{
// helper variables
int xMin = min.x;
int zMin = min.z;
int xMax = max.x;
int zMax = max.z;
Vector2i center = new Vector2i((xMin + xMax) / 2, (zMin + zMax) / 2);
List <Vector2i> candidates = new List <Vector2i>();
List <Vector2i> addition = new List <Vector2i>();
List <Vector2i> render = new List <Vector2i>();
// build an ordered list of all the col positions
for (int x = xMin; x <= xMax; x++)
{
for (int z = zMin; z <= zMax; z++)
{
candidates.Add(new Vector2i(x, z));
}
}
candidates.Sort(new Vector2i.DistanceComparer(center));
// pick the next ones to render
foreach (Vector2i pos in candidates)
{
lock (this)
{
if (!renderedData.Contains(pos))
{
render.Add(pos);
if (render.Count >= count)
{
break;
}
}
}
}
// pick the columns we need to load to support the render picks
foreach (Vector2i pos in render)
{
for (int x = pos.x - 1; x <= pos.x + 1; x++)
{
for (int z = pos.z - 1; z <= pos.z + 1; z++)
{
Vector2i loadPos = new Vector2i(x, z);
lock (this)
{
if (!loadedData.ContainsKey(loadPos) && !addition.Contains(loadPos))
{
addition.Add(loadPos);
}
}
}
}
}
// load columns
foreach (Vector2i pos in addition)
{
// load from file if available
Column col = Load(pos);
// generate terrain
if (col == null)
{
col = TerrainGen.Generate(worldType, pos);
}
// add to loaded world
lock (this)
{
loadedData.Add(pos, col);
}
}
// render columns and queue for mesh update
foreach (Vector2i pos in render)
{
// notify main thread
if (pos.x >= xMin && pos.z >= zMin && pos.x <= xMax && pos.z <= zMax)
{
ColumnInstantiateTask loadTask = new ColumnInstantiateTask(pos, RenderColumn(pos));
lock (instantiateQueue) instantiateQueue.Add(loadTask);
lock (this) renderedData.Add(pos);
}
}
}
private float[,] createTerrain()
{
Generatable terrain = new TerrainGen(ChunckSize,Zoom);
return terrain.Generate();
}
public static void CreateNew(int seed)
{
generating = true;
TerrainGen.Generate(seed);
generating = false;
}
private float[,] createTerrain()
{
Generatable terrain = new TerrainGen(ChunckSize, Zoom);
return(terrain.Generate());
}
