/// <inheritdoc />
public void Load()
{
IEnumerable <TypeInfo> behaviors = ReflectionHelper.GetClassesAssignableFrom <IBehavior>();
foreach (var type in behaviors)
{
IEnumerable <BehaviorAttribute> behaviorAttributes = type.GetCustomAttributes <BehaviorAttribute>();
if (behaviorAttributes != null)
{
foreach (BehaviorAttribute attribute in behaviorAttributes)
{
if (!_behaviors.TryGetValue(attribute.Type, out IList <BehaviorEntryCache> behaviorsCache))
{
behaviorsCache = new List <BehaviorEntryCache>();
_behaviors.TryAdd(attribute.Type, behaviorsCache);
}
if (attribute.IsDefault)
{
if (behaviorsCache.Any(x => x.IsDefault))
{
throw new InvalidOperationException($"{attribute.Type} already has a default behavior.");
}
var entityBehavior = new BehaviorEntryCache(type, true);
behaviorsCache.Add(entityBehavior);
}
else
{
if (behaviorsCache.Any(x => x.MoverId == attribute.MoverId))
{
_logger.LogWarning($"Behavior for mover id {attribute.MoverId} and type {type} is already set.");
continue;
}
var entityBehavior = new BehaviorEntryCache(type, false, attribute.MoverId);
behaviorsCache.Add(entityBehavior);
}
}
}
}
foreach (var behaviorsForType in _behaviors)
{
if (!behaviorsForType.Value.Any(x => x.IsDefault))
{
throw new InvalidProgramException($"{behaviorsForType.Key}");
}
}
Count = _behaviors.Aggregate(0, (current, next) => current + next.Value.Count);
_logger.LogInformation("-> {0} behaviors loaded.", Count);
}
/// <inheritdoc />
public IBehavior GetDefaultBehavior(BehaviorType type, IWorldEntity entity)
{
BehaviorEntryCache behaviorEntry = GetBehaviorEntry(type, x => x.IsDefault);
if (behaviorEntry == null)
{
throw new ArgumentNullException(nameof(behaviorEntry), $"Cannot find default behavior for type {type}.");
}
return(CreateBehaviorInstance(behaviorEntry, entity));
}
/// <summary> /// Creates a new behavior instance. /// </summary> /// <param name="behaviorEntry">Behavior entry informations.</param> /// <param name="entity">Entity.</param> /// <returns>Behavior.</returns> private IBehavior CreateBehaviorInstance(BehaviorEntryCache behaviorEntry, IWorldEntity entity) => ActivatorUtilities.CreateInstance(_serviceProvider, behaviorEntry.BehaviorTypeInfo, entity) as IBehavior;
/// <inheritdoc />
public IBehavior GetBehavior(BehaviorType type, IWorldEntity entity, int moverId)
{
BehaviorEntryCache behaviorEntry = GetBehaviorEntry(type, x => x.MoverId == moverId);
return(behaviorEntry == null?GetDefaultBehavior(type, entity) : CreateBehaviorInstance(behaviorEntry, entity));
}