public void RemoveComponentWithConcreteType(int entityId, Type type)
{
var success = _entityComponentMap.TryGetValue(entityId, out var components);
if (!success)
{
throw new Exception($"Trying to remove component from nonexistant entity with Id {entityId}");
}
components.Remove(type);
// update matchers
var entity = _entities[entityId];
foreach (var pair in _matchers)
{
var signature = pair.Key;
var entities = pair.Value;
if (ComponentSignatureManager.IsTypeInSignatureRequirements(signature, type) && entities.Entities.Contains(entity))
{
entities.Entities.Remove(entity);
}
if (ComponentSignatureManager.IsTypeInSignatureRestrictions(signature, type) && DoesEntityMatchSignature(entityId, signature))
{
entities.Entities.Add(entity);
}
}
}
private bool DoesEntityMatchSignature(int entityId, BitSet signature)
{
var components = _entityComponentMap[entityId];
var componentTypes = new List <Type>(components.Keys);
return(ComponentSignatureManager.CheckAgainstComponentSignature(signature, componentTypes));
}
public void RemoveComponentFromAll <T>() where T : IComponent
{
if (!ComponentSignatureManager.IsTypeInSignatureRequirements(_signature, typeof(T)))
{
throw new Exception("Trying to remove non-required component from all in EntitySet");
}
foreach (var entity in Entities)
{
entity.RemoveComponent <T>();
}
}
private void AddComponentWithConcreteType(int entityId, IComponent component, Type type)
{
if (!_entities.ContainsKey(entityId))
{
_entities[entityId] = new Entity(entityId, this);
}
var success = _entityComponentMap.TryGetValue(entityId, out var components);
if (!success)
{
components = new Dictionary <Type, IComponent>();
_entityComponentMap[entityId] = components;
}
if (components.ContainsKey(type))
{
throw new Exception($"Inserting duplicate component into entity with Id {entityId}");
}
component.Attach(entityId);
components[type] = component;
// update matchers
var entity = _entities[entityId];
foreach (var pair in _matchers)
{
var signature = pair.Key;
var entities = pair.Value;
if (ComponentSignatureManager.IsTypeInSignatureRequirements(signature, type) && DoesEntityMatchSignature(entityId, signature))
{
entities.Entities.Add(entity);
}
if (ComponentSignatureManager.IsTypeInSignatureRestrictions(signature, type) && entities.Entities.Contains(entity) && !DoesEntityMatchSignature(entityId, signature))
{
entities.Entities.Remove(entity);
}
}
}
public EntitySet Get(BitSet signature)
{
var success = _matchers.TryGetValue(signature, out var entities);
if (!success)
{
if (!ComponentSignatureManager.ValidateSignature(signature))
{
throw new Exception("Trying to fetch with invalid signature (including and excluding the same component)");
}
entities = new EntitySet(signature, this);
foreach (var entityId in _entityComponentMap.Keys)
{
if (DoesEntityMatchSignature(entityId, signature))
{
entities.Entities.Add(_entities[entityId]);
}
}
_matchers[signature] = entities;
}
return(entities);
}