public async ValueTask Render(GameContext game, Canvas2DContext context)
{
var fps = 1000f / game.GameTime.ElapsedMilliseconds;
await context.SetFillStyleAsync("green");
await context.FillRectAsync(10, 50, 300, _height);
await context.SetFillStyleAsync("#fff");
await context.SetFontAsync("18px verdana");
y = startY;
await WriteLine($"Total game time (s): {game.GameTime.TotalMilliseconds / 1000}", context);
await WriteLine($"Frame time (ms): {game.GameTime.ElapsedMilliseconds}", context);
await WriteLine($"FPS: {fps:###}", context);
if (AsteroidsSpawner is not null)
{
await WriteLine($"Asteroids alive: {AsteroidsSpawner.Alive:###}", context);
}
if (BulletSpawner is not null)
{
await WriteLine($"Bullets spawned: {BulletSpawner.Alive:###}", context);
}
}
/// <summary>
/// 画小时数字
/// </summary>
/// <param name="radius">半径</param>
/// <returns></returns>
private async Task DrawHourNumberAsync(double radius)
{
await _context.SaveAsync();
//await _context.TranslateAsync(radius, radius);
await _context.BeginPathAsync();
await _context.SetFontAsync("18px Arial");
await _context.SetFillStyleAsync("#000");
await _context.SetTextAlignAsync(TextAlign.Center);
await _context.SetTextBaselineAsync(TextBaseline.Middle);
List <Task> tasks = new List <Task>();
for (int i = 1; i <= 12; i++)
{
tasks.Add(DrawOneHourNumberAsync(i, radius));
}
await Task.WhenAll(tasks);
await _context.RestoreAsync();
}
private async Task GameOver()
{
await _context.SetFontAsync("48px serif");
await _context.SetTextAlignAsync(TextAlign.Center);
await _context.FillTextAsync("GAME OVER", _gameWidth / 2, _gameHeight / 2 - 48);
}
public async ValueTask DrawText(string text,
Point pos,
Color color,
CanvasTextFormat canvasTextFormat)
{
await _canvas2DContext.SetFontAsync(canvasTextFormat.FormattedString);
await DrawText(text, pos, color);
}
private async Task DrawText(string text, Position position, int maxWidth, FontInfo?fontInfo)
{
var oldFont = _context.Font;
if (fontInfo != null)
{
await _context.SetFontAsync(fontInfo.FontString);
}
text = await _nodeTextFormatter.ClampText(_context, text, maxWidth);
await _context.FillTextAsync(text, position.X, position.Y);
if (fontInfo != null)
{
await _context.SetFontAsync(oldFont);
}
}
public async ValueTask Render(GameContext game, Canvas2DContext context)
{
var y = (double)game.Display.Size.Height / 2;
var x = (double)game.Display.Size.Width / 2;
await context.SetFillStyleAsync("#fff").ConfigureAwait(false);
await context.SetFontAsync("40px verdana").ConfigureAwait(false);
await context.SetTextAlignAsync(TextAlign.Center).ConfigureAwait(false);
await context.FillTextAsync("Blazeroids!", x, y).ConfigureAwait(false);
await context.SetFontAsync("28px verdana").ConfigureAwait(false);
await context.FillTextAsync("press Enter to start", x, y + 40)
.ConfigureAwait(false);
}
public async ValueTask DrawText(int left, int top, string text, string font, string color = "", string fillColor = "")
{
await _canvas.SetFontAsync(font);
await _canvas.SetStrokeStyleAsync(color);
await _canvas.SetFillStyleAsync(fillColor);
await _canvas.StrokeTextAsync(text, left, top);
}
private static async Task RenderText(Canvas2DContext context, string text, int x)
{
await context.SetFillStyleAsync("#fff");
await context.SetFontAsync("18px verdana");
await context.SetTextBaselineAsync(TextBaseline.Middle);
await context.FillTextAsync(text, x, 0);
}
public async ValueTask Render(GameContext game, Canvas2DContext context)
{
await context.SetFillStyleAsync("#fff").ConfigureAwait(false);
await context.SetFontAsync("18px verdana").ConfigureAwait(false);
var hiScore = Math.Max(_score, _maxScore);
var text = $"Score: {_score:###} Hi Score: {hiScore:###}";
var textSize = await context.MeasureTextAsync(text).ConfigureAwait(false);
var x = game.Display.Size.Width - textSize.Width - 50;
await context.FillTextAsync(text, x, 50).ConfigureAwait(false);
}
public async ValueTask Render(GameContext game, Canvas2DContext context)
{
var fps = 1000f / game.GameTime.ElapsedMilliseconds;
await context.SetFillStyleAsync("green");
await context.FillRectAsync(10, 50, 400, 100);
await context.SetFontAsync("24px verdana");
await context.StrokeTextAsync($"Total game time (s): {game.GameTime.TotalMilliseconds / 1000}", 20, 80);
await context.StrokeTextAsync($"Frame time (ms): {game.GameTime.ElapsedMilliseconds}", 20, 110);
await context.StrokeTextAsync($"FPS: {fps:###}", 20, 140);
}
public async ValueTask Render(GameContext game, Canvas2DContext context)
{
var fps = 1000f / game.GameTime.ElapsedMilliseconds;
await context.SetFillStyleAsync("green");
await context.FillRectAsync(10, 50, 300, _height);
await context.SetFillStyleAsync("#fff");
await context.SetFontAsync("18px verdana");
y = startY;
await WriteLine($"Total game time (s): {game.GameTime.TotalMilliseconds / 1000}", context);
await WriteLine($"Frame time (ms): {game.GameTime.ElapsedMilliseconds}", context);
await WriteLine($"FPS: {fps:###}", context);
}
public async ValueTask Render()
{
await _context.ClearRectAsync(0, 0, _width, _height);
await _context.BeginBatchAsync();
await _context.SetFillStyleAsync("white");
await _context.SetFontAsync("32px consolas");
var text = $"Points: {_points.ToString("D3")} High score: {HighScore} {HighScoreName} Lives: {_lives.ToString("D3")}";
var length = await _context.MeasureTextAsync(text);
await _context.FillTextAsync(text, _width / 2 - (length.Width / 2), 25);
if (GameOver)
{
await RenderGameOver();
}
else if (Won)
{
await RenderWonGame();
}
else if (Started)
{
await RenderGameFrame();
}
else if (!Started)
{
await _context.SetFillStyleAsync("white");
text = $"Use arrow keys to move, space to fire";
length = await _context.MeasureTextAsync(text);
await _context.FillTextAsync(text, _width / 2 - (length.Width / 2), 150);
text = $"Press space to start";
length = await _context.MeasureTextAsync(text);
await _context.FillTextAsync(text, _width / 2 - (length.Width / 2), 200);
}
await _context.EndBatchAsync();
}
async ValueTask drawPage(Page p)
{
await _outputCanvasContext.ClearRectAsync(0, 0, _canvasReference.Width, _canvasReference.Height);
await _outputCanvasContext.SetFillStyleAsync("black");
await _outputCanvasContext.FillRectAsync(0, 0, _canvasReference.Width, _canvasReference.Height);
for (int i = 0; i < p.elements.Count; i++)
{
PageElement e = p.elements[i];
await _outputCanvasContext.SetFontAsync(fontCode(e.font));
await _outputCanvasContext.SetFillStyleAsync("#ffffff");
await _outputCanvasContext.FillTextAsync(e.text, e.x *skala, e.y *skala);
}
await Task.Delay(p.time * 1000);
}
private async Task SetFontFormat(Font font)
{
var fontString = GetFontString(font);
await ctx.SetFontAsync(fontString);
}