protected override void OnUpdate()
{
var beginSystem = World.GetExistingSystem <ChangeDetectionSystemBegin>();
if (beginSystem == null)
{
UnityEngine.Debug.LogWarning($"{nameof(ChangeDetectionSystemEnd)} cannot detect changes without the existance of {nameof(ChangeDetectionSystemBegin)}");
return;
}
if (!beginSystem.HasUpdatedAtLeastOnce)
{
return;
}
ChangeDetection.RecordEntityTrace(EntityManager, _endTrace);
// compare 'begin values' with 'end values'
ChangeDetection.CompareAndLogChanges(beginSystem.Trace, _endTrace);
}
protected override void OnUpdate()
{
HasUpdatedAtLeastOnce = true;
ChangeDetection.RecordEntityTrace(EntityManager, Trace);
}