/// <summary>
/// Assure that an entity has the components. If an entity already possess one of them, it will not get replaced.
/// </summary>
/// <param name="entityHandle"></param>
/// <param name="componentTypeSpan"></param>
public void AssureComponents(GameEntityHandle entityHandle, Span <ComponentType> componentTypeSpan)
{
var updateArchetype = false;
var entityBoard = Boards.Entity;
foreach (ref readonly var componentType in componentTypeSpan)
{
// TODO: support for shared component
if (entityBoard.GetComponentColumn(componentType.Id)[(int)entityHandle.Id].Valid)
{
continue;
}
var componentBoard = GameWorldLL.GetComponentBoardBase(Boards.ComponentType, componentType);
var cRef = new ComponentReference(componentType, GameWorldLL.CreateComponent(componentBoard));
GameWorldLL.AssignComponent(componentBoard, cRef, Boards.Entity, entityHandle);
GameWorldLL.SetOwner(componentBoard, cRef, entityHandle);
updateArchetype = true;
}
if (updateArchetype)
{
GameWorldLL.UpdateArchetype(Boards.Archetype, Boards.ComponentType, Boards.Entity, entityHandle);
}
}
/// <summary>
/// Add and remove multiple component to an entity
/// </summary>
/// <param name="entityHandle"></param>
/// <param name="componentType"></param>
/// <returns></returns>
public void AddRemoveMultipleComponent(GameEntityHandle entityHandle, Span <ComponentType> addSpan, Span <ComponentType> removeSpan)
{
ThrowOnInvalidHandle(entityHandle);
var updateArch = false;
foreach (ref readonly var componentType in addSpan)
{
var componentBoard = GameWorldLL.GetComponentBoardBase(Boards.ComponentType, componentType);
var cRef = new ComponentReference(componentType, GameWorldLL.CreateComponent(componentBoard));
updateArch |= GameWorldLL.AssignComponent(componentBoard, cRef, Boards.Entity, entityHandle);
GameWorldLL.SetOwner(componentBoard, cRef, entityHandle);
}
foreach (ref readonly var componentType in removeSpan)
{
updateArch |= GameWorldLL.RemoveComponentReference(GameWorldLL.GetComponentBoardBase(Boards.ComponentType, componentType), componentType, Boards.Entity, entityHandle);
}
if (updateArch)
{
GameWorldLL.UpdateArchetype(Boards.Archetype, Boards.ComponentType, Boards.Entity, entityHandle);
}
}
/// <summary>
/// Create a new component
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public ComponentReference CreateComponent <T>()
where T : struct, IEntityComponent
{
var componentType = AsComponentType <T>();
return(new ComponentReference(componentType, GameWorldLL.CreateComponent(GameWorldLL.GetComponentBoardBase(Boards.ComponentType, componentType))));
}
/// <summary>
/// Add multiple component to an entity
/// </summary>
/// <param name="entityHandle"></param>
/// <param name="componentType"></param>
/// <remarks>
/// If you wish to not replace existing components, use <see cref="AssureComponents"/> (a bit slower than this method)
/// </remarks>
public void AddMultipleComponent(GameEntityHandle entityHandle, Span <ComponentType> componentTypeSpan)
{
ThrowOnInvalidHandle(entityHandle);
foreach (ref readonly var componentType in componentTypeSpan)
{
var componentBoard = GameWorldLL.GetComponentBoardBase(Boards.ComponentType, componentType);
var cRef = new ComponentReference(componentType, GameWorldLL.CreateComponent(componentBoard));
GameWorldLL.AssignComponent(componentBoard, cRef, Boards.Entity, entityHandle);
GameWorldLL.SetOwner(componentBoard, cRef, entityHandle);
}
GameWorldLL.UpdateArchetype(Boards.Archetype, Boards.ComponentType, Boards.Entity, entityHandle);
}
/// <summary>
/// Add a component to an entity
/// </summary>
/// <param name="entityHandle"></param>
/// <param name="componentType"></param>
/// <returns></returns>
public ComponentReference AddComponent(GameEntityHandle entityHandle, ComponentType componentType)
{
ThrowOnInvalidHandle(entityHandle);
var componentBoard = GameWorldLL.GetComponentBoardBase(Boards.ComponentType, componentType);
var cRef = new ComponentReference(componentType, GameWorldLL.CreateComponent(componentBoard));
GameWorldLL.SetOwner(componentBoard, cRef, entityHandle);
// Only update archetype if this is a new component to the entity, and not just an update
if (GameWorldLL.AssignComponent(componentBoard, cRef, Boards.Entity, entityHandle))
{
GameWorldLL.UpdateArchetype(Boards.Archetype, Boards.ComponentType, Boards.Entity, entityHandle);
}
return(cRef);
}
/// <summary>
/// Create a new component
/// </summary>
/// <param name="componentType"></param>
/// <returns></returns>
public ComponentReference CreateComponent(ComponentType componentType)
{
return(new ComponentReference(componentType, GameWorldLL.CreateComponent(GameWorldLL.GetComponentBoardBase(Boards.ComponentType, componentType))));
}