Client initial commit.

client/fonts/fonts.go

@@ -0,0 +1,81 @@
+package fonts
+
+import (
+	"bytes"
+	"log"
+
+	_ "embed"
+
+	"github.com/hajimehoshi/ebiten/v2/text/v2"
+	"golang.org/x/image/font"
+	"golang.org/x/image/font/opentype"
+	"golang.org/x/image/font/sfnt"
+)
+
+const (
+	FontDPI          = 72
+	FontSizeStandard = 16
+	FontSizeLarge    = 24
+)
+
+type FontStruct struct {
+	Standard font.Face
+	Large    font.Face
+	New      *text.GoTextFaceSource
+	Bitfont  *text.GoTextFaceSource
+}
+
+var (
+
+	//go:embed vcrmono.ttf
+	vcrmono_ttf []byte
+	//go:embed bitbybit.ttf
+	bitbybit_ttf []byte
+
+	LaunchyFont FontStruct
+)
+
+func LoadFontFatal(src []byte) *sfnt.Font {
+	tt, err := opentype.Parse(src)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return tt
+}
+
+func GetFaceFatal(fnt *sfnt.Font, dpi, size float64) font.Face {
+	var face font.Face
+	var err error
+
+	if dpi > 0 && size > 0 && fnt != nil {
+		face, err = opentype.NewFace(fnt, &opentype.FaceOptions{
+			Size:    size,
+			DPI:     dpi,
+			Hinting: font.HintingVertical,
+		})
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+	return face
+}
+
+func init() {
+	LaunchyFont = FontStruct{}
+
+	fnt := LoadFontFatal(vcrmono_ttf)
+	LaunchyFont.Standard = GetFaceFatal(fnt, FontDPI, FontSizeStandard)
+	LaunchyFont.Large = GetFaceFatal(fnt, FontDPI, FontSizeLarge)
+
+	s, err := text.NewGoTextFaceSource(bytes.NewReader(vcrmono_ttf))
+	if err != nil {
+		log.Fatal(err)
+	}
+	LaunchyFont.New = s
+
+	s, err = text.NewGoTextFaceSource(bytes.NewReader(bitbybit_ttf))
+	if err != nil {
+		log.Fatal(err)
+	}
+	LaunchyFont.Bitfont = s
+}