//Generate Decorations based on Perlin noise
public void Generate(float[,] heightMap, Vector3 position)
{
Tile tile = WorldBuilder.GetTile(position);
bool placeTree = true;
float scale = 0.17777f;
for (int y = 0; y < 11; y = y + interval)
{
for (int x = 0; x < 11; x = x + interval)
{
double sampleX = (x + position.x) / scale;
double sampleY = (y + position.z) / scale;
float noiseHeight = (float)(perlin.GetValue(sampleY, 0, sampleX) + 1) / 2;
Biome biome = terrainGenerator.GetBiomeByCoordinates(new Vector2(position.x + x, position.z + y));
if (biome.BiomeType is DefaultBiomeType || biome.BiomeType is ForestBiomeType || biome.BiomeType is PlainsBiomeType || biome.BiomeType is ShrublandBiomeType)
{
if (noiseHeight >= PlantThreshold && noiseHeight <= PlantThreshold + MarginThreshold)
{
Vector3 pos = new Vector3((position.x + x), heightMap[x, y], (position.z + y));
tile.AddDecoration(fractalTree.GeneratePlants(pos, biome.BiomeType));
}
if (noiseHeight >= TreeThreshold && placeTree && noiseHeight <= TreeThreshold + MarginThreshold)
{
int jitterValue = Mathf.RoundToInt((float)(perlin.GetValue(sampleY + terrainGenerator.RandomNumbers[x], 0, sampleX + terrainGenerator.RandomNumbers[y])) * 5);
// Prevent jitterValue to exceed index elemends
if (jitterValue > 5 || jitterValue < -5)
{
jitterValue = 5;
}
Vector3 pos = new Vector3(position.x + 5 + jitterValue, heightMap[5 + jitterValue, 5 + jitterValue], position.z + 5 + jitterValue);
// Check Biome again for Tree Placement
Biome biome2 = terrainGenerator.GetBiomeByCoordinates(new Vector2(pos.x, pos.z));
if (biome2.BiomeType is DefaultBiomeType || biome2.BiomeType is ForestBiomeType || biome2.BiomeType is PlainsBiomeType || biome2.BiomeType is ShrublandBiomeType)
{
tile.AddDecoration(fractalTree.GenerateTree(pos, biome.BiomeType));
placeTree = false;
}
}
}
}
}
}
public void DecorateOutsideWalls(Map map, Rectangle rect, Func <int, int, string> decoFn)
{
for (int x = rect.Left; x < rect.Right; x++)
{
for (int y = rect.Top; y < rect.Bottom; y++)
{
Tile tile = map.GetTileAt(x, y);
if (tile.Model.IsWalkable)
{
continue;
}
if (tile.IsInside)
{
continue;
}
string deco = decoFn(x, y);
if (deco != null)
{
tile.AddDecoration(deco);
}
}
}
}