/// <summary>
/// Extract a copy of all event of a given type referenced by VersionId.
/// Caching the result is advised.
/// </summary>
/// <typeparam name="EVENT_TYPE">The type of event to extract.</typeparam>
/// <param name="registeredEvents">The NativeHashmap to copy the effects to.</param>
public void GetRegisteredEffects <EVENT_TYPE>(ref NativeHashMap <int, EVENT_TYPE> registeredEvents) where EVENT_TYPE : struct, IRegistryEvent
{
int effectTypeId = RegistryEventReference.GetTypeId(typeof(EVENT_TYPE));
// If no effect are registered for that type return.
if (!registar.ContainsKey(effectTypeId))
{
registeredEvents = new NativeHashMap <int, EVENT_TYPE>(0, Allocator.Persistent);
return;
}
ConcurrentDictionary <int, IRegistryEvent> effects;
registar.TryGetValue(effectTypeId, out effects);
registeredEvents = new NativeHashMap <int, EVENT_TYPE>(effects.Count, Allocator.Persistent);
var effectEnumerator = effects.GetEnumerator();
// Copy all effect to the result NativeHashMap.
while (effectEnumerator.MoveNext())
{
var current = effectEnumerator.Current;
registeredEvents.TryAdd(current.Key, (EVENT_TYPE)current.Value);
}
}
/// <inheritdoc/>
public RegistryEventReference AddEventInstance(IRegistryEvent effect)
{
int effectTypeId = RegistryEventReference.GetTypeId(effect.GetType());
int effectVersionId = RegistryEventReference.GetEffectInstanceId(effect);
// Lazy initialzation
if (!registar.ContainsKey(effectTypeId))
{
// Using Concurrent version of the dictionary to ovoid problem of reading while writing event though it should not happen.
registar[effectTypeId] = new ConcurrentDictionary <int, IRegistryEvent>();
}
// Avoid duplicates
if (!registar[effectTypeId].ContainsKey(effectVersionId))
{
registar[effectTypeId].TryAdd(effectVersionId, effect);
OnNewElementRegistered();
}
return(new RegistryEventReference()
{
TypeId = effectTypeId, VersionId = effectVersionId
});
}