/// <summary>
/// Adds component to entity.
/// </summary>
/// <param name="entity">Entity.</param>
public T AddComponent <T> (int entity) where T : class, IEcsComponent
{
var componentId = GetComponentIndex <T> ();
var entityData = _entities[entity];
if (entityData.Mask.GetBit(componentId))
{
return(entityData.Components[componentId] as T);
}
_delayedUpdates.Add(new DelayedUpdate(DelayedUpdate.Op.AddComponent, entity, componentId));
EcsComponentPool pool;
if (!_componentPools.TryGetValue(componentId, out pool))
{
pool = new EcsComponentPool(typeof(T));
_componentPools[componentId] = pool;
}
var component = pool.Get() as T;
while (entityData.ComponentsCount <= componentId)
{
entityData.Components.Add(null);
entityData.ComponentsCount++;
}
entityData.Components[componentId] = component;
return(component);
}
/// <summary>
/// Gets component index. Useful for GetComponent() requests as second parameter for performance reason.
/// </summary>
/// <param name="componentType">Component type.</param>
public int GetComponentIndex(Type componentType)
{
#if DEBUG && !ECS_PERF_TEST
if (componentType == null || !typeof(IEcsComponent).IsAssignableFrom(componentType) || !componentType.IsClass)
{
throw new Exception("Invalid component type");
}
#endif
int retVal;
var type = componentType.GetHashCode();
if (!_componentIds.TryGetValue(type, out retVal))
{
retVal = _componentIds.Count;
_componentIds[type] = retVal;
_componentPools[retVal] = new EcsComponentPool(componentType);
}
return(retVal);
}
/// <summary>
/// Gets component index. Useful for GetComponent() requests as second parameter for performance reason.
/// </summary>
/// <param name="componentType">Component type.</param>
public int GetComponentIndex(Type componentType)
{
#if DEBUG && !ECS_PERF_TEST
if (componentType == null || !componentType.IsClass)
{
throw new Exception("Invalid component type");
}
#endif
int retVal;
var type = componentType.GetHashCode();
if (!_componentIds.TryGetValue(type, out retVal))
{
retVal = _componentIds.Count;
#if DEBUG && !ECS_PERF_TEST
if (retVal >= EcsComponentMask.BitsCount)
{
throw new Exception("No free room for new components - try to increase EcsComponentMask.RawLength.");
}
#endif
_componentIds[type] = retVal;
_componentPools[retVal] = new EcsComponentPool(componentType);
}
return(retVal);
}
