feat: implementing text drawing.

cmd/test/main.go

@@ -3,10 +3,10 @@ package main
 import (
 	"vultras.su/core/gg"
 	"github.com/hajimehoshi/ebiten/v2/examples/resources/images"
+	"github.com/hajimehoshi/ebiten/v2/examples/resources/fonts"
 	_ "github.com/silbinarywolf/preferdiscretegpu"
 	"bytes"
 	"log"
-	//"strings"
 	"fmt"
 )
 
@@ -60,10 +60,30 @@ func main() {
 	circle.Antialias = true
 	circle.Layer = HighestL
 	circle.Visible = true
-	e.Spawn(circle)
+	//e.Spawn(circle)
 
-	fmt.Println(rect.GetLayer(), player.GetLayer())
+	txt := &gg.Text{}
+	txt.Transform = gg.T()
+	//txt.Position = gg.V2(400)
+	txt.Color = gg.Rgba(1, 1, 1, 1)
+	txt.Layer = HighestL
+	txt.Visible = true
+	txt.Text = "Hello, World!\nПривет, Мир!"
+	txt.Face, err = gg.MakeFaceFromTtf(
+		bytes.NewReader(fonts.MPlus1pRegular_ttf),
+		&gg.TtfFaceOptions{
+			Size: 32,
+			DPI: 72,
+			Hinting: gg.FontHintingNone,
+		},
+	)
+	if err != nil {
+		panic(err)
+	}
+	e.Spawn(txt)
 
+	//fmt.Println(rect.GetLayer(), player.GetLayer())
+	fmt.Println("Starting...")
 	err = e.Run()
 	if err != nil {
 		panic(err)

cmd/test/text.go

@@ -0,0 +1,11 @@
+package main
+
+import (
+	"vultras.su/core/gg"
+)
+
+type Text struct {
+	gg.Text
+}
+
+//func (txt *Text) Update()

draw.go

@@ -0,0 +1,5 @@
+package gg
+
+// Should implement
+// some general structure
+// for the returned values for the Draw call.

go.mod

@@ -19,4 +19,5 @@ require (
 	golang.org/x/mobile v0.0.0-20230427221453-e8d11dd0ba41 // indirect
 	golang.org/x/sync v0.2.0 // indirect
 	golang.org/x/sys v0.8.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
 )

go.sum

@@ -2,6 +2,8 @@ github.com/ebitengine/purego v0.4.0-alpha.4 h1:Y7yIV06Yo5M2BAdD7EVPhfp6LZ0tEcQo5
 github.com/ebitengine/purego v0.4.0-alpha.4/go.mod h1:ah1In8AOtksoNK6yk5z1HTJeUkC1Ez4Wk2idgGslMwQ=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20221017161538-93cebf72946b h1:GgabKamyOYguHqHjSkDACcgoPIz3w0Dis/zJ1wyHHHU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20221017161538-93cebf72946b/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
+github.com/hajimehoshi/bitmapfont/v2 v2.2.3 h1:jmq/TMNj352V062Tr5e3hAoipkoxCbY1JWTzor0zNps=
+github.com/hajimehoshi/bitmapfont/v2 v2.2.3/go.mod h1:sWM8ejdkGSXaQGlZcegMRx4DyEPOWYyXqsBKIs+Yhzk=
 github.com/hajimehoshi/ebiten/v2 v2.6.0-alpha.3.0.20230521122940-90562ee84b9b h1:QURPKDDBduvp9Zh5/4NeiPeUfpB4PokrfoH3tx4yNrg=
 github.com/hajimehoshi/ebiten/v2 v2.6.0-alpha.3.0.20230521122940-90562ee84b9b/go.mod h1:+fFI6Ag5YvbX1ivNQD2TxNhpWFDPuxEoew421TTQAxI=
 github.com/jezek/xgb v1.1.0 h1:wnpxJzP1+rkbGclEkmwpVFQWpuE2PUGNUzP8SbfFobk=
@@ -43,6 +45,7 @@ golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
 golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=

text.go

@@ -0,0 +1,69 @@
+package gg
+
+import (
+	//"strings"
+	"golang.org/x/image/font"
+	"golang.org/x/image/font/opentype"
+	"github.com/hajimehoshi/ebiten/v2/text"
+	"github.com/hajimehoshi/ebiten/v2"
+	"io"
+	//"fmt"
+)
+
+//type FontOptions = font.Options
+var (
+	FontHintingNone = font.HintingNone
+)
+
+type Face = font.Face
+
+type TtfFont = opentype.Font
+type TtfFaceOptions = opentype.FaceOptions
+type TtfFace = opentype.Face
+
+func MakeFaceFromTtf(src io.ReaderAt, opts *TtfFaceOptions) (Face, error) {
+	fnt, err := ParseTtfFont(src)
+	if err != nil {
+		return nil, err
+	}
+
+	face, err := NewTtfFace(fnt, opts)
+	if err != nil {
+		return nil, err
+	}
+
+	return face, nil
+}
+
+func ParseTtfFont(src io.ReaderAt) (*TtfFont, error) {
+	return opentype.ParseReaderAt(src)
+}
+
+func NewTtfFace(fnt *TtfFont, opts *TtfFaceOptions) (Face, error) {
+	return opentype.NewFace(fnt, opts)
+}
+
+// The type implements basic drawable text.
+// (Now needs to implement rotation, scaling etc, cause now only position)
+type Text struct {
+	Object
+	Transform
+	Text string
+	Face Face
+	Colority
+	Visibility
+}
+
+func (txt *Text) Draw(c *Context) []EVertex {
+	m := txt.Matrix()
+	m.Concat(c.Camera.RealMatrix())
+	//x, y := txt.Position.XY()
+	//text.Draw(c.Image)
+	text.DrawWithOptions(c.Image, txt.Text, txt.Face,
+		&ebiten.DrawImageOptions{
+			GeoM: m,
+		},
+	)
+	return nil
+}
+

vector.go

@@ -12,6 +12,9 @@ var (
 type Vector struct {
 	X, Y Float
 }
+func (v Vector) XY() (Float, Float) {
+	return v.X, v.Y
+}
 type Point = Vector
 //type Vertex = Vector