// Noise selector is experimental feature to make spawn distribution always the same.
// For example, if one area was cleaned of objects, the random selector will help us to ensure that objects
// will be respawned in this area and not in other areas.
private NoiseSelector CreateTileRandomSelector(double density, ObjectSpawnPreset preset, int desiredCount)
{
var seed = (this.Id.GetHashCode() * 397) ^ preset.GetHashCode();
// we need to use a little bit higher density in our noise selector,
// otherwise it will be always impossible to spawn the full amount of objects
density *= 1.065;
var minDensity = 0.0;
if (desiredCount < 10)
{
// ensure that min density is high enough to allow spawning of these objects
minDensity = 0.1;
}
// clamp density
density = MathHelper.Clamp(density, minDensity, max: 1);
return(new NoiseSelector(
from: 0,
to: density,
noise: new WhiteNoise(seed: seed)));
}
