/// <summary>
/// Generates vessel parts and resources appropriate for the chosen set.
/// </summary>
///
/// <param name="group">The set to which the asteroid belongs.</param>
/// <returns>An array of ConfigNodes storing the asteroid's parts. The first element MUST
/// be the root part.</returns>
///
/// <exception cref="System.InvalidOperationException">Thrown if <c>group</c> cannot
/// generate valid parts. The program state will be unchanged in the event of an
/// exception.</exception>
/// <exception cref="System.NullReferenceException">Thrown if <c>group</c> is
/// null.</exception>
private ConfigNode [] makeAsteroidParts(AsteroidSet group)
{
// The same "seed" that shows up in ProceduralAsteroid?
uint seed = (uint)rng.Next();
string part = group.drawAsteroidType();
try {
ConfigNode potato = ProtoVessel.CreatePartNode(part, seed);
return(new [] { potato });
} catch (Exception e) {
// Really? That's what CreatePartNode throws?
throw new InvalidOperationException(
Localizer.Format("#autoLOC_CustomAsteroids_ErrorTypeBadPart", part), e);
}
}
/// <summary>
/// Uses criteria similar to ScenarioDiscoverableObjects to decide whether to create an
/// asteroid.
/// </summary>
protected override void checkSpawn()
{
if (areAsteroidsTrackable() &&
AsteroidManager.spawnRate() > 0.0 &&
countUntrackedAsteroids() < rng.Next(SPAWN_GROUP_MIN_LIMIT, SPAWN_GROUP_MAX_LIMIT))
{
if (rng.NextDouble() < 1.0 / (1.0 + SPAWN_ODDS_AGAINST))
{
spawnAsteroid();
}
else
{
Debug.Log("[StockalikeSpawner]: "
+ Localizer.Format("#autoLOC_CustomAsteroids_LogSpawnStock",
SPAWN_ODDS_AGAINST));
}
}
}
/// <summary>
/// Returns <c>+1</c> or <c>-1</c> with equal probability. Does not throw exceptions.
/// </summary>
/// <returns>The value <c>+1</c> or <c>-1</c>.</returns>
internal static double drawSign()
{
return(rng.Next(2) == 0 ? -1.0 : +1.0);
}