public static World InitializeWorld(string worldName)
{
var world = new World(worldName);
World.Active = world;
// Entity manager must be first so that other things can find it.
world.AddManager(new EntityManager());
return(world);
}
public static void InitializeSystems(World world)
{
var allSystemTypes = TypeManager.GetSystems();
var allSystemNames = TypeManager.SystemNames;
if (allSystemTypes.Length == 0)
{
throw new InvalidOperationException("DefaultTinyWorldInitialization: No Systems found.");
}
// Create top level presentation system and simulation systems.
InitializationSystemGroup initializationSystemGroup = new InitializationSystemGroup();
world.AddManager(initializationSystemGroup);
SimulationSystemGroup simulationSystemGroup = new SimulationSystemGroup();
world.AddManager(simulationSystemGroup);
PresentationSystemGroup presentationSystemGroup = new PresentationSystemGroup();
world.AddManager(presentationSystemGroup);
// Create the working set of systems.
int nSystems = 0;
Type[] systemTypes = new Type[allSystemTypes.Length];
ComponentSystem[] systems = new ComponentSystem[allSystemTypes.Length];
#if WRITE_LOG
Console.WriteLine("--- Adding systems:");
#endif
for (int i = 0; i < allSystemTypes.Length; i++)
{
if (TypeManager.GetSystemAttributes(allSystemTypes[i], typeof(DisableAutoCreationAttribute)).Length > 0)
{
continue;
}
if (allSystemTypes[i] == initializationSystemGroup.GetType() ||
allSystemTypes[i] == simulationSystemGroup.GetType() ||
allSystemTypes[i] == presentationSystemGroup.GetType())
{
continue;
}
if (world.GetExistingManager(allSystemTypes[i]) != null)
{
continue;
}
#if WRITE_LOG
Console.WriteLine(allSystemNames[i]);
#endif
systemTypes[nSystems] = allSystemTypes[i];
systems[nSystems] = TypeManager.ConstructSystem(allSystemTypes[i]);
world.AddManager(systems[nSystems]);
nSystems++;
}
#if WRITE_LOG
Console.WriteLine("--- Adding systems Done.");
#endif
for (int i = 0; i < nSystems; ++i)
{
var sysType = systemTypes[i];
var system = systems[i];
var groups = TypeManager.GetSystemAttributes(sysType, typeof(UpdateInGroupAttribute));
if (groups.Length == 0)
{
simulationSystemGroup.AddSystemToUpdateList(system);
}
for (int g = 0; g < groups.Length; ++g)
{
var groupType = groups[g] as UpdateInGroupAttribute;
var groupSystem = world.GetExistingManager(groupType.GroupType) as ComponentSystemGroup;
if (groupSystem == null)
{
throw new Exception("DefaultTinyWorldInitialization failed to find existing SystemGroup.");
}
groupSystem.AddSystemToUpdateList(system);
}
}
}
