protected override void OnCreateManager()
{
base.OnCreateManager();
commandCallbackSystem = World.GetExistingManager <CommandCallbackSystem>();
componentCallbackSystem = World.GetExistingManager <ComponentCallbackSystem>();
componentConstraintsCallbackSystem = World.GetExistingManager <ComponentConstraintsCallbackSystem>();
}
protected override void OnCreate()
{
base.OnCreate();
commandCallbackSystem = World.GetExistingSystem <CommandCallbackSystem>();
componentCallbackSystem = World.GetExistingSystem <ComponentCallbackSystem>();
componentConstraintsCallbackSystem = World.GetExistingSystem <ComponentConstraintsCallbackSystem>();
workerFlagCallbackSystem = World.GetExistingSystem <WorkerFlagCallbackSystem>();
}