23720751690

Committed 29 Mar 2026 10:33PM UTC coverage: 30.541% (-0.8%) from 31.336%

Build # 23720751690

Build Type

push

coveralls.net

Committed by

DemoBytom

Commit Message

WIP fixes

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1276 of 4178 relevant lines covered (30.54%)

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88.51

/src/Demo.Engine.Core/Services/MainLoopService.cs

// Copyright © Michał Dembski and contributors.
// Distributed under MIT license. See LICENSE file in the root for more information.

using System.Diagnostics;
using Demo.Engine.Core.Features.StaThread;
using Demo.Engine.Core.Interfaces;
using Demo.Engine.Core.Interfaces.Rendering;
using Demo.Engine.Core.Requests.Keyboard;
using Demo.Engine.Core.ValueObjects;
using Mediator;
using Microsoft.Extensions.Logging;

namespace Demo.Engine.Core.Services;

internal sealed class MainLoopService
    : IMainLoopService,
      IAsyncDisposable
{
    private readonly ILogger<MainLoopService> _logger;
    private readonly IStaThreadWriter _staThreadWriter;
    private readonly IMediator _mediator;
    private readonly IFpsTimer _fpsTimer;
    private readonly IMainLoopLifetime _mainLoopLifetime;
    private readonly ILoopJob _loopJob;
    private bool _disposedValue;

    public Task ExecutingTask { get; }

    public MainLoopService(
        ILogger<MainLoopService> logger,
        IStaThreadWriter staThreadWriter,
        IMediator mediator,
        IFpsTimer fpsTimer,
        IRenderingEngine renderingEngine,
        IMainLoopLifetime mainLoopLifetime,
        ILoopJob loopJob)
    {
        _logger = logger;
        _staThreadWriter = staThreadWriter;
        _mediator = mediator;
        _fpsTimer = fpsTimer;
        _mainLoopLifetime = mainLoopLifetime;
        _loopJob = loopJob;
        ExecutingTask = Task.Run(async () =>
        {
            try
            {
                await DoAsync(renderingEngine);
            }
            catch (TaskCanceledException)
            {
                _mainLoopLifetime.Cancel();
            }
            catch (Exception ex)
            {
                _logger.LogMainLoopFailedWithError(ex);
                _mainLoopLifetime.Cancel();
                //throw;
            }
        });
    }

    private async Task DoAsync(
        IRenderingEngine renderingEngine)
    {
        var keyboardHandle = await _mediator.Send(new KeyboardHandleRequest(), CancellationToken.None);
        var keyboardCharCache = await _mediator.Send(new KeyboardCharCacheRequest(), CancellationToken.None);

        var surfaces = new RenderingSurfaceId[]
        {
            await _staThreadWriter.CreateSurface(
                _mainLoopLifetime.Token),
            //await _channelWriter.CreateSurface(
            //    _mainLoopLifetime.Token),
        };

        var previous = Stopwatch.GetTimestamp();
        var lag = TimeSpan.Zero;

        var msPerUpdate = TimeSpan.FromSeconds(1) / 60;

        var doEventsOk = true;

        while (
            doEventsOk
            //&& IsRunning
            && !_disposedValue
            && !_mainLoopLifetime.Token.IsCancellationRequested)
        {
            var current = Stopwatch.GetTimestamp();
            var elapsed = Stopwatch.GetElapsedTime(previous, current);
            previous = current;
            lag += elapsed;

            //process input
            // TODO!

            while (lag >= msPerUpdate)
            {
                //Update
                // TODO - fix the UPS timer.. somehow :D
                _fpsTimer.StopUpdateTimer();
                foreach (var renderingSurfaceId in surfaces)
                {
                    if (!renderingEngine.TryGetRenderingSurface(
                        renderingSurfaceId,
                        out var renderingSurface))
                    {
                        _logger.LogRenderingSurfaceNotFound(
                            renderingSurfaceId);
                        break;
                    }

                    await _loopJob.Update(
                          renderingSurface,
                          keyboardHandle,
                          keyboardCharCache);
                }
                lag -= msPerUpdate;
                _fpsTimer.StartUpdateTimer();
            }

            //Render
            foreach (var renderingSurfaceId in surfaces)
            {
                doEventsOk &= await _staThreadWriter.DoEventsOk(
                    renderingSurfaceId,
                    _mainLoopLifetime.Token);

                using var scope = _fpsTimer.StartRenderingTimerScope(
                    renderingSurfaceId);

                _loopJob.Render(
                    renderingEngine,
                    renderingSurfaceId);
            }
        }
        _mainLoopLifetime.Cancel();
    }

    private async ValueTask Dispose(bool disposing)
    {
        if (!_disposedValue)
        {
            if (disposing)
            {
            }

            _disposedValue = true;
            //Make sure the loop finishes
            await ExecutingTask;
        }
    }

    public async ValueTask DisposeAsync()
    {
        // Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
        await Dispose(disposing: true);
        GC.SuppressFinalize(this);
    }
}

1	// Copyright © Michał Dembski and contributors.
2	// Distributed under MIT license. See LICENSE file in the root for more information.
3
4	using System.Diagnostics;
5	using Demo.Engine.Core.Features.StaThread;
6	using Demo.Engine.Core.Interfaces;
7	using Demo.Engine.Core.Interfaces.Rendering;
8	using Demo.Engine.Core.Requests.Keyboard;
9	using Demo.Engine.Core.ValueObjects;
10	using Mediator;
11	using Microsoft.Extensions.Logging;
12
13	namespace Demo.Engine.Core.Services;
14
15	internal sealed class MainLoopService
16	: IMainLoopService,
17	IAsyncDisposable
18	{
19	private readonly ILogger<MainLoopService> _logger;
20	private readonly IStaThreadWriter _staThreadWriter;
21	private readonly IMediator _mediator;
22	private readonly IFpsTimer _fpsTimer;
23	private readonly IMainLoopLifetime _mainLoopLifetime;
24	private readonly ILoopJob _loopJob;
25	private bool _disposedValue;
26
27	public Task ExecutingTask { get; }
28
29	public MainLoopService(	1✔
30	ILogger<MainLoopService> logger,	1✔
31	IStaThreadWriter staThreadWriter,	1✔
32	IMediator mediator,	1✔
33	IFpsTimer fpsTimer,	1✔
34	IRenderingEngine renderingEngine,	1✔
35	IMainLoopLifetime mainLoopLifetime,	1✔
36	ILoopJob loopJob)	1✔
37	{
38	_logger = logger;	1✔
39	_staThreadWriter = staThreadWriter;	1✔
40	_mediator = mediator;	1✔
41	_fpsTimer = fpsTimer;	1✔
42	_mainLoopLifetime = mainLoopLifetime;	1✔
43	_loopJob = loopJob;	1✔
44	ExecutingTask = Task.Run(async () =>	1✔
45	{	1✔
46	try	1✔
47	{	1✔
48	await DoAsync(renderingEngine);	1✔
49	}	1✔
50	catch (TaskCanceledException)	×
51	{	1✔
52	_mainLoopLifetime.Cancel();	×
53	}	×
54	catch (Exception ex)	×
55	{	1✔
56	_logger.LogMainLoopFailedWithError(ex);	×
57	_mainLoopLifetime.Cancel();	×
58	//throw;	1✔
59	}	×
60	});	1✔
61	}	1✔
62
63	private async Task DoAsync(
64	IRenderingEngine renderingEngine)
65	{
66	var keyboardHandle = await _mediator.Send(new KeyboardHandleRequest(), CancellationToken.None);	1✔
67	var keyboardCharCache = await _mediator.Send(new KeyboardCharCacheRequest(), CancellationToken.None);	1✔
68
69	var surfaces = new RenderingSurfaceId[]	1✔
70	{	1✔
71	await _staThreadWriter.CreateSurface(	1✔
72	_mainLoopLifetime.Token),	1✔
73	//await _channelWriter.CreateSurface(	1✔
74	// _mainLoopLifetime.Token),	1✔
75	};	1✔
76
77	var previous = Stopwatch.GetTimestamp();	1✔
78	var lag = TimeSpan.Zero;	1✔
79
80	var msPerUpdate = TimeSpan.FromSeconds(1) / 60;	1✔
81
82	var doEventsOk = true;	1✔
83
84	while (	1✔
85	doEventsOk	1✔
86	//&& IsRunning	1✔
87	&& !_disposedValue	1✔
88	&& !_mainLoopLifetime.Token.IsCancellationRequested)	1✔
89	{
90	var current = Stopwatch.GetTimestamp();	1✔
91	var elapsed = Stopwatch.GetElapsedTime(previous, current);	1✔
92	previous = current;	1✔
93	lag += elapsed;	1✔
94
95	//process input
96	// TODO!
97
98	while (lag >= msPerUpdate)	1✔
99	{
100	//Update
101	// TODO - fix the UPS timer.. somehow :D
102	_fpsTimer.StopUpdateTimer();	1✔
103	foreach (var renderingSurfaceId in surfaces)	1✔
104	{
105	if (!renderingEngine.TryGetRenderingSurface(
106	renderingSurfaceId,	1✔
107	out var renderingSurface))	1✔
108	{
109	_logger.LogRenderingSurfaceNotFound(	×
110	renderingSurfaceId);	×
111	break;	×
112	}
113
114	await _loopJob.Update(	1✔
115	renderingSurface,	1✔
116	keyboardHandle,	1✔
117	keyboardCharCache);	1✔
118	}
119	lag -= msPerUpdate;	1✔
120	_fpsTimer.StartUpdateTimer();	1✔
121	}
122
123	//Render
124	foreach (var renderingSurfaceId in surfaces)	1✔
125	{
126	doEventsOk &= await _staThreadWriter.DoEventsOk(	1✔
127	renderingSurfaceId,	1✔
128	_mainLoopLifetime.Token);	1✔
129
130	using var scope = _fpsTimer.StartRenderingTimerScope(	1✔
131	renderingSurfaceId);	1✔
132
133	_loopJob.Render(	1✔
134	renderingEngine,	1✔
135	renderingSurfaceId);	1✔
136	}
137	}
138	_mainLoopLifetime.Cancel();	1✔
139	}	1✔
140
141	private async ValueTask Dispose(bool disposing)
142	{
143	if (!_disposedValue)	1✔
144	{
145	if (disposing)	1✔
146	{
147	}
148
149	_disposedValue = true;	1✔
150	//Make sure the loop finishes
151	await ExecutingTask;	1✔
152	}
153	}	1✔
154
155	public async ValueTask DisposeAsync()
156	{
157	// Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
158	await Dispose(disposing: true);	1✔
159	GC.SuppressFinalize(this);	1✔
160	}	1✔
161	}

DemoBytom / DemoEngine / 23720751690

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