/// <summary>
/// Adds an <see cref="IComponent"/> instance of type T to the specified <see cref="Entity"/>.
/// </summary>
/// <typeparam name="T">Type of the <see cref="IComponent"/> being added.</typeparam>
/// <param name="entity">The <see cref="Entity"/> instance to which the component will be added.</param>
/// <param name="component">The <see cref="IComponent"/> instance to be added.</param>
public void AddComponent <T>(Entity entity, T component) where T : IComponent
{
ComponentType type = ComponentTypeManager.GetTypeFor <T>();
int typeId = type.Id;
if (!_componentsByType.ContainsKey(typeId))
{
_componentsByType.Add(typeId, new Dictionary <int, IComponent>());
}
int entityId = entity.Id;
if (!_componentsByType[typeId].ContainsKey(entityId))
{
_componentsByType[typeId].Add(entityId, component);
entity.AddTypeBit(type.Bit);
OnComponentAdded(entity, component);
}
}
/// <summary>
/// Removes an <see cref="IComponent"/> instance of type T from the specified <see cref="Entity"/>.
/// </summary>
/// <typeparam name="T">Type of <see cref="IComponent"/> to be removed.</typeparam>
/// <param name="entity">The <see cref="Entity"/> instance from which the component will be removed.</param>
/// <param name="component">The <see cref="ComponentType"/> instance describing the type of component to removed.</param>
public void RemoveComponent <T>(Entity entity, T component) where T : IComponent
{
ComponentType type = ComponentTypeManager.GetTypeFor <T>();
RemoveComponent(entity, type);
}