public IGameSnapshot TakeSnapshot()
{
string snapshotJson = SerializationHelpers.Serialize(GetRawSnapshot(),
RequiredConverters.GetConverters(),
RequiredConverters.GetContextObjects(Maybe <GameEngine> .Empty));
var restored = GameSnapshotRestorer.Restore(snapshotJson, _templateJson,
Maybe <GameEngine> .Empty);
return(restored.GameSnapshot);
}
/// <summary>
/// Loads an IGameSnapshot from the given JSON and the given template group. The JSON should
/// have been generated by calling SaveSnapshot.
/// </summary>
/// <exception cref="DeserializationException">An error loading the snapshot
/// occurred.</exception>
public static IGameSnapshot LoadSnapshot(string snapshotJson, string templateJson)
{
try {
var restorer = GameSnapshotRestorer.Restore(snapshotJson, templateJson,
Maybe <GameEngine> .Empty);
return(restorer.GameSnapshot);
}
catch (Exception e) {
throw new DeserializationException("snapshot=" + snapshotJson +
", template=" + templateJson, e);
}
}
public GameEngine(string snapshotJson, string templateJson)
{
_templateJson = templateJson;
// Create our own little island of references with its own set of templates
GameSnapshotRestorer restorer = GameSnapshotRestorer.Restore(
snapshotJson, templateJson, Maybe.Just(this));
GameSnapshot snapshot = restorer.GameSnapshot;
EntityIdGenerator = snapshot.EntityIdGenerator;
_systems = snapshot.Systems;
_entityIndex = new EntityIndex();
// TODO: ensure that when correctly restore UpdateNumber
//UpdateNumber = updateNumber;
_globalEntity = (RuntimeEntity)snapshot.GlobalEntity;
EventNotifier.Submit(EntityAddedEvent.Create(_globalEntity));
foreach (var entity in snapshot.AddedEntities)
{
AddEntity((RuntimeEntity)entity);
}
foreach (var entity in snapshot.ActiveEntities)
{
RuntimeEntity runtimeEntity = (RuntimeEntity)entity;
// add the entity
InternalAddEntity(runtimeEntity);
// TODO: verify that if the modification notifier is already triggered, we can
// ignore this
//if (((ContentEntity)entity).HasModification) {
// runtimeEntity.ModificationNotifier.Notify();
//}
// done via InternalAddEntity
//if (deserializedEntity.HasStateChange) {
// deserializedEntity.Entity.DataStateChangeNotifier.Notify();
//}
}
foreach (var entity in snapshot.RemovedEntities)
{
RuntimeEntity runtimeEntity = (RuntimeEntity)entity;
// add the entity
InternalAddEntity(runtimeEntity);
// TODO: verify that if the modification notifier is already triggered, we can
// ignore this
//if (((ContentEntity)entity).HasModification) {
// runtimeEntity.ModificationNotifier.Notify();
//}
// done via InternalAddEntity
//if (deserializedEntity.HasStateChange) {
// deserializedEntity.Entity.DataStateChangeNotifier.Notify();
//}
RemoveEntity(runtimeEntity);
}
TemplateIndex templateIndex = new TemplateIndex(restorer.Templates.Templates);
_executionGroups = new List <ExecutionGroup>();
var executionGroups = SystemExecutionGroup.GetExecutionGroups(snapshot.Systems);
foreach (var executionGroup in executionGroups)
{
List <MultithreadedSystem> multithreadedSystems = new List <MultithreadedSystem>();
foreach (var system in executionGroup.Systems)
{
MultithreadedSystem multithreaded = CreateMultithreadedSystem(system, templateIndex);
multithreadedSystems.Add(multithreaded);
}
_executionGroups.Add(new ExecutionGroup(multithreadedSystems));
}
_nextState = GameEngineNextState.SynchronizeState;
SynchronizeState().Wait();
// call of the engine loaded systems
foreach (var group in _executionGroups)
{
foreach (var system in group.Systems)
{
var onLoaded = system.System as Trigger.OnEngineLoaded;
if (onLoaded != null)
{
onLoaded.OnEngineLoaded(EventNotifier);
// TODO: verify that OnEngineLoaded didn't change any state (via hashing)
}
}
}
}