/// <summary>
/// Gets the value of a chunk component.
/// </summary>
/// <remarks>
/// A chunk component is common to all entities in a chunk. You can access a chunk <see cref="IComponentData"/>
/// instance through either the chunk itself or through an entity stored in that chunk.
/// </remarks>
/// <param name="chunk">The chunk.</param>
/// <typeparam name="T">The component type.</typeparam>
/// <returns>A struct of type T containing the component value.</returns>
/// <exception cref="ArgumentException">Thrown if the ArchetypeChunk object is invalid.</exception>
public T GetChunkComponentData <T>(ArchetypeChunk chunk) where T : struct, IComponentData
{
#if ENABLE_UNITY_COLLECTIONS_CHECKS
if (chunk.Invalid())
{
throw new System.ArgumentException(
$"GetChunkComponentData<{typeof(T)}> can not be called with an invalid archetype chunk.");
}
#endif
var metaChunkEntity = chunk.m_Chunk->metaChunkEntity;
return(GetComponentData <T>(metaChunkEntity));
}
/// <summary>
/// Sets the value of a chunk component.
/// </summary>
/// <remarks>
/// A chunk component is common to all entities in a chunk. You can access a chunk <see cref="IComponentData"/>
/// instance through either the chunk itself or through an entity stored in that chunk.
/// </remarks>
/// <param name="chunk">The chunk to modify.</param>
/// <param name="componentValue">The component data to set.</param>
/// <typeparam name="T">The component type.</typeparam>
/// <exception cref="ArgumentException">Thrown if the ArchetypeChunk object is invalid.</exception>
public static void SetChunkComponentData <T>(this EntityManager manager, ArchetypeChunk chunk, T componentValue) where T : class, IComponentData
{
#if ENABLE_UNITY_COLLECTIONS_CHECKS
if (chunk.Invalid())
{
throw new System.ArgumentException(
$"SetChunkComponentData<{typeof(T)}> can not be called with an invalid archetype chunk.");
}
#endif
var metaChunkEntity = chunk.m_Chunk->metaChunkEntity;
manager.SetComponentData <T>(metaChunkEntity, componentValue);
}