public async Task <string> ClampText(Canvas2DContext context, string text, int maxWidth)
{
var metrics = await context.MeasureTextAsync(text);
if (metrics.Width <= maxWidth)
{
return(text);
}
const string suffix = "...";
var suffixMetrics = await context.MeasureTextAsync(suffix);
maxWidth = (int)Math.Floor(maxWidth - suffixMetrics.Width);
var str = string.Empty;
var previousStr = string.Empty;
foreach (var letter in text)
{
str += letter;
var width = await context.MeasureTextAsync(str);
if (width.Width > maxWidth)
{
return(previousStr);
}
previousStr = str;
}
throw new FormatterException(text);
}
internal async Task <double> MeasureDisplayStringWidthAsync(string text, Font font)
{
await this.SetFont(font);
var size = await ctx.MeasureTextAsync(text);
return((double)size.Width);
}
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()
{
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();
}