// Public methods
///////////////////////////
public EntityId RegisterDataType <T>()
{
var type = typeof(T);
var component = tracker.Create();
index.Register(component, type);
var typeIndex = TypeId.Get <T>();
if (dataTypes.Length <= typeIndex)
{
var newSize = dataTypes.Length * 2;
while (newSize <= typeIndex)
{
newSize *= 2;
}
Array.Resize(ref dataTypes, newSize);
}
dataTypes[typeIndex] = component;
return(component);
}