/// <summary>
/// Renders the standard view's 3D data.
/// </summary>
/// <param name="view">The view object.</param>
public void Render3D(View3D view)
{
try
{
StackNoteHelper.Push("GameEngine3D - Render All Entities", this);
// TODO: Out View Rendering!
GL.ActiveTexture(TextureUnit.Texture1);
Textures.NormalDef.Bind();
GL.ActiveTexture(TextureUnit.Texture0);
foreach (ClientEntity ce in EntityList)
{
// TODO: layering logic of some form instead of this overly basic stuff.
if (ShouldRender(ce.Renderer, view.RenderingShadows))
{
try
{
StackNoteHelper.Push("GameEngine3D - Render Specific Entity", ce);
ce.Renderer?.RenderStandard(MainContext);
}
finally
{
StackNoteHelper.Pop();
}
}
}
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// Starts the game engine, and begins the primary loop.
/// </summary>
/// <param name="initialFlags">The initial window flag.</param>
public void Start(GameWindowFlags initialFlags = GameWindowFlags.FixedWindow)
{
try
{
StackNoteHelper.Push("GameClientWindow - Start, run", this);
SysConsole.Output(OutputType.INIT, "GameEngine loading...");
Window = new GameWindow(WindWid, WindHei, new GraphicsMode(24, 24, 0, 0), StartingWindowTitle, initialFlags, DisplayDevice.Default, 4, 3, GraphicsContextFlags.ForwardCompatible);
Window.Load += Window_Load;
Window.RenderFrame += Window_RenderFrame;
Window.Mouse.Move += Mouse_Move;
Window.Closed += Window_Closed;
Window.Resize += Window_Resize;
Window.ReduceCPUWaste = CPUWastePatch;
SysConsole.Output(OutputType.INIT, "GameEngine calling SetUp event...");
OnWindowSetUp?.Invoke();
SysConsole.Output(OutputType.INIT, "GameEngine running...");
if (CPUWastePatch)
{
double rate = DisplayDevice.Default.RefreshRate;
Window.Run(rate, rate);
}
else
{
Window.Run();
}
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// Removes an entity from the world.
/// </summary>
/// <param name="ent">The entity to remove.</param>
public void DespawnEntity(T ent)
{
if (!ent.IsSpawned)
{
SysConsole.Output(OutputType.WARNING, "Despawing non-spawned entity.");
return;
}
try
{
StackNoteHelper.Push("BasicEngine - Despawn Entity", ent);
foreach (Property prop in ent.EnumerateAllProperties())
{
if (prop is BasicEntityProperty <T, T2> bep)
{
bep.OnDespawn();
}
}
ent.OnDespawnEvent?.Fire(new EntityDespawnEventArgs());
RemoveEntity(ent);
ent.IsSpawned = false;
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// Renders all entities and render helpers.
/// </summary>
/// <param name="lights">Whether to include things that don't cast shadows.</param>
/// <param name="shouldShadow">The method to determine if an object should cast a shadow.</param>
private void RenderAll(bool lights, Func <ClientEntity, bool> shouldShadow)
{
try
{
StackNoteHelper.Push("GameEngine2D - RenderAll", this);
Textures.White.Bind();
RenderHelper.SetColor(Vector4.One);
RenderAllObjectsPre?.Invoke(lights);
// This dups the list inherently, preventing glitches from removal while rendering, helpfully!
foreach (ClientEntity ent in Entities.Values
.Where((e) => ShouldRender(e.Renderer, lights) && (shouldShadow == null || shouldShadow(e)))
.OrderBy((e) => e.Renderer.RenderingPriorityOrder))
{
try
{
StackNoteHelper.Push("GameEngine2D - Render Specific Entity", ent);
ent.Renderer.RenderStandard2D(MainRenderContext);
}
finally
{
StackNoteHelper.Pop();
}
}
RenderAllObjectsPost?.Invoke(lights);
GraphicsUtil.CheckError("Render - all Entities rendered");
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// Renders a single frame of the game, and also ticks.
/// </summary>
/// <param name="sender">Irrelevant.</param>
/// <param name="e">Holds the frame time (delta).</param>
private void Window_RenderFrame(object sender, FrameEventArgs e)
{
try
{
StackNoteHelper.Push("GameClientWindow - Render and tick frame", this);
// First step: check delta
if (e.Time <= 0.0)
{
return;
}
// Mouse handling
PreviousMouse = CurrentMouse;
CurrentMouse = Mouse.GetState();
// Standard pre-tick
PreTick(e.Time);
ErrorCode ec = GL.GetError();
while (ec != ErrorCode.NoError)
{
SysConsole.Output(OutputType.WARNING, "Uncaught GL Error: " + ec);
ec = GL.GetError();
}
// Second step: clear the screen
GL.ClearBuffer(ClearBuffer.Color, 0, ScreenClearColor);
GL.ClearBuffer(ClearBuffer.Depth, 0, DepthClear);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
GL.DrawBuffer(DrawBufferMode.Back);
GraphicsUtil.CheckError("GameClient - Pre");
// Tick helpers
Models.Update(GlobalTickTime);
GraphicsUtil.CheckError("GameClient - PostModelUpdate");
// Third step: general game rendering
CurrentEngine.RenderSingleFrame();
GraphicsUtil.CheckError("GameClient - PostMainEngine");
// Add the UI Layer too
MainUI.Draw();
GraphicsUtil.CheckError("GameClient - PostUI");
// Fourth step: clean up!
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.BindVertexArray(0);
GL.UseProgram(0);
// Semi-final step: Tick logic!
GraphicsUtil.CheckError("GameClient - PreTick");
// Main instance tick.
Tick();
// Primary UI tick
MainUI.Tick();
Resized = false;
GraphicsUtil.CheckError("GameClient - PostTick");
// Final step: Swap the render buffer onto the screen!
Window.SwapBuffers();
GraphicsUtil.CheckError("GameClient - Post");
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// Ticks the instance's scheduler.
/// </summary>
public void TickScheduler()
{
try
{
StackNoteHelper.Push("GameInstance - Tick Scheduler", Schedule);
Schedule.RunAllSyncTasks(Delta);
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// Constructs the server game instance.
/// </summary>
public ServerGameInstance()
{
try
{
StackNoteHelper.Push("ServerGameInstance construction, preparating of default engine", this);
Engines.Add(new ServerEngine());
DefaultEngine.LoadBasic();
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// Ticks the instance and all engines.
/// Called automatically by the standard run thread.
/// Call <see cref="PreTick(double)"/> first.
/// </summary>
public void Tick()
{
try
{
StackNoteHelper.Push("GameInstance tick sequence - Tick", this);
foreach (T2 engine in Engines)
{
engine.Delta = Delta;
engine.Tick();
}
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// The internal engine tick sequence.
/// </summary>
public void Tick()
{
try
{
StackNoteHelper.Push("BasicEngine - Tick Scheduler", Schedule);
Schedule.RunAllSyncTasks(Delta);
}
finally
{
StackNoteHelper.Pop();
}
try
{
StackNoteHelper.Push("BasicEngine - Update Physics", PhysicsWorld);
PhysicsWorld.Internal.Update(Delta);
}
finally
{
StackNoteHelper.Pop();
}
try
{
StackNoteHelper.Push("BasicEngine - Tick all entities", this);
// Dup list, to ensure ents can despawn themselves in the tick method!
IReadOnlyList <T> ents = EntityListDuplicate();
for (int i = 0; i < ents.Count; i++)
{
if (ents[i].Ticks)
{
try
{
StackNoteHelper.Push("BasicEngine - Tick specific entity", ents[i]);
ents[i].TickThis();
}
finally
{
StackNoteHelper.Pop();
}
}
}
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// Ticks the server and all engines.
/// Called automatically by the standard run thread.
/// </summary>
/// <param name="delta">How much time has passed since the last tick.</param>
public void Tick(double delta)
{
try
{
StackNoteHelper.Push("ServerGameInstance tick sequence - Tick", this);
tpsc++;
Delta = delta;
GlobalTickTime += delta;
Schedule.RunAllSyncTasks(delta);
foreach (ServerEngine engine in Engines)
{
engine.Delta = delta;
engine.Tick();
}
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// Loads the engine.
/// </summary>
public void Load()
{
try
{
StackNoteHelper.Push("GameEngineBase - Loading", this);
SysConsole.Output(OutputType.INIT, "GameEngine starting load sequence, start with basic...");
LoadBasic();
SysConsole.Output(OutputType.INIT, "GameEngine loading shaders...");
GetShaders();
SysConsole.Output(OutputType.INIT, "GameEngine core load complete, calling additional load...");
PostLoad();
SysConsole.Output(OutputType.INIT, "GameEngine prepping audio systems...");
Sounds = new SoundEngine();
Sounds.Init(this);
SysConsole.Output(OutputType.INIT, "GameEngine load sequence complete.");
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// Spawns an entity into the world.
/// </summary>
/// <param name="ticks">Whether it should tick.</param>
/// <param name="configure">A method to configure the entity prior to spawn or property add, if one applies.</param>
/// <param name="props">Any properties to apply.</param>
/// <returns>The spawned entity.</returns>
public T SpawnEntity(bool ticks, Action <T> configure, params Property[] props)
{
try
{
StackNoteHelper.Push("BasicEngine - Spawn Entity", this);
T ce = CreateEntity(ticks);
ce.EID = CurrentEID++;
try
{
StackNoteHelper.Push("BasicEngine - Configure Entity", ce);
configure?.Invoke(ce);
for (int i = 0; i < props.Length; i++)
{
ce.AddProperty(props[i]);
}
AddEntity(ce);
ce.IsSpawned = true;
foreach (Property prop in ce.GetAllProperties())
{
if (prop is BasicEntityProperty <T, T2> bep)
{
bep.OnSpawn();
}
}
ce.OnSpawnEvent?.Fire(new EntitySpawnEventArgs());
}
finally
{
StackNoteHelper.Pop();
}
return(ce);
}
finally
{
StackNoteHelper.Pop();
}
}
/// <summary>
/// Starts and runs the entire server game instance.
/// Will take over present thread until completion.
/// </summary>
public void StartAndRun()
{
// Tick
double TARGETFPS = 30.0;
Stopwatch Counter = new Stopwatch();
DeltaCounter = new Stopwatch();
DeltaCounter.Start();
TotalDelta = 0;
double CurrentDelta = 0.0;
TargetDelta = 0.0;
int targettime = 0;
try
{
StackNoteHelper.Push("ServerGameInstance main loop - StartAndRun", this);
while (true)
{
// Update the tick time usage counter
Counter.Reset();
Counter.Start();
// Update the tick delta counter
DeltaCounter.Stop();
// Delta time = Elapsed ticks * (ticks/second)
CurrentDelta = ((double)DeltaCounter.ElapsedTicks) / ((double)Stopwatch.Frequency);
// Begin the delta counter to find out how much time is /really/ slept+ticked for
DeltaCounter.Reset();
DeltaCounter.Start();
// How much time should pass between each tick ideally
TARGETFPS = Target_FPS;
if (TARGETFPS < 1 || TARGETFPS > 600)
{
TARGETFPS = 30;
}
TargetDelta = (1.0d / TARGETFPS);
// How much delta has been built up
TotalDelta += CurrentDelta;
double tdelt = TargetDelta;
while (TotalDelta > tdelt * 3)
{
// Lagging - cheat to catch up!
tdelt *= 2; // TODO: Handle even harder tick loss
}
// As long as there's more delta built up than delta wanted, tick
while (TotalDelta > tdelt)
{
if (NeedShutdown)
{
return;
}
lock (TickLock)
{
Tick(tdelt);
}
TotalDelta -= tdelt;
}
// The tick is done, stop measuring it
Counter.Stop();
// Only sleep for target milliseconds/tick minus how long the tick took... this is imprecise but that's okay
targettime = (int)((1000d / TARGETFPS) - Counter.ElapsedMilliseconds);
// Only sleep at all if we're not lagging
if (targettime > 0)
{
// Try to sleep for the target time - very imprecise, thus we deal with precision inside the tick code
Thread.Sleep(targettime);
}
}
}
catch (ThreadAbortException)
{
return;
}
catch (Exception ex)
{
SysConsole.Output("Server crash", ex);
}
finally
{
StackNoteHelper.Pop();
}
}
