protected virtual void OnComponentChanged(Entity entity, int index, EntityComponent previousComponent, EntityComponent newComponent)
{
ComponentChanged?.Invoke(this, new EntityComponentEventArgs(entity, index, previousComponent, newComponent));
}
internal void NotifyComponentChanged(Entity entity, int index, EntityComponent oldComponent, EntityComponent newComponent)
{
// No real update
if (oldComponent == newComponent)
{
return;
}
// If we have a new component we can try to collect processors for it
if (newComponent != null)
{
CollectNewProcessorsByComponentType(newComponent.GetType().GetTypeInfo());
RegisterPendingProcessors();
}
// Remove previous component from processors
currentDependentProcessors.Clear();
if (oldComponent != null)
{
CheckEntityComponentWithProcessors(entity, oldComponent, true, currentDependentProcessors);
}
// Add new component to processors
if (newComponent != null)
{
CheckEntityComponentWithProcessors(entity, newComponent, false, currentDependentProcessors);
}
// Update all dependencies
if (currentDependentProcessors.Count > 0)
{
UpdateDependentProcessors(entity, oldComponent, newComponent);
currentDependentProcessors.Clear();
}
// Notify component changes
OnComponentChanged(entity, index, oldComponent, newComponent);
}
private void UpdateDependentProcessors(Entity entity, EntityComponent skipComponent1, EntityComponent skipComponent2)
{
var components = entity.Components;
for (int i = 0; i < components.Count; i++)
{
var component = components[i];
if (component == skipComponent1 || component == skipComponent2)
{
continue;
}
var componentType = component.GetType().GetTypeInfo();
var processorsForComponent = MapComponentTypeToProcessors[componentType];
{
for (int j = 0; j < processorsForComponent.Count; j++)
{
var processor = processorsForComponent[j];
if (currentDependentProcessors.Contains(processor))
{
processor.ProcessEntityComponent(entity, component, false);
}
}
}
}
}
/// <summary> /// Checks if <see cref="Entity"/> needs to be either added or removed. /// </summary> /// <param name="entity">The entity.</param> /// <param name="entityComponent"></param> /// <param name="forceRemove"></param> protected internal abstract void ProcessEntityComponent(Entity entity, EntityComponent entityComponent, bool forceRemove);