examples/blocks: Use TTF font directly instead of examples/common

examples/_resources/fonts/license.md

@@ -1,5 +1,31 @@
 # License
 
+## arcade_n.ttf
+
+```
+=============================================================
+P.Font Series No.       : 1013
+Type                    : TrueType
+Family Name             : Arcade
+Style Name              : Arcade Normal
+                          Arcade Interlaced
+                          Arcade Rounded
+Author                  : Yuji Adachi
+Description             : Copyright (C)1997-2003 Yuji Adachi
+Support URL             : http://www.9031.com/
+=============================================================
+
+Attention
+
+印刷物、WEBページ等での御使用は自由ですが、このフォントを、
+作者の許可なく販売したり、営利目的の製品に添付することは禁じます。
+また、このフォントのデザインは予告なく変更することがあります。
+
+
+足立　裕司
+yuji@9031.com
+```
+
 ## mplus-1p-regular.ttf
 
 ```

examples/blocks/blocks/font.go

@@ -18,19 +18,79 @@ package blocks
 
 import (
 	"image/color"
+	"io/ioutil"
+	"log"
+	"strings"
+
+	"github.com/golang/freetype/truetype"
+	"golang.org/x/image/font"
 
 	"github.com/hajimehoshi/ebiten"
-	"github.com/hajimehoshi/ebiten/examples/common"
+	"github.com/hajimehoshi/ebiten/ebitenutil"
+	"github.com/hajimehoshi/ebiten/text"
 )
 
+const (
+	arcadeFontBaseSize = 8
+)
+
+var (
+	arcadeFonts = map[int]font.Face{}
+)
+
+func init() {
+	f, err := ebitenutil.OpenFile(ebitenutil.JoinStringsIntoFilePath("_resources", "fonts", "arcade_n.ttf"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer f.Close()
+
+	b, err := ioutil.ReadAll(f)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	tt, err := truetype.Parse(b)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	for i := 1; i <= 4; i++ {
+		const dpi = 72
+		arcadeFonts[i] = truetype.NewFace(tt, &truetype.Options{
+			Size:    float64(arcadeFontBaseSize * i),
+			DPI:     dpi,
+			Hinting: font.HintingFull,
+		})
+	}
+}
+
+func textWidth(str string) int {
+	b, _ := font.BoundString(arcadeFonts[1], str)
+	return (b.Max.X - b.Min.X).Ceil()
+}
+
+var (
+	shadowColor = color.NRGBA{0, 0, 0, 0x80}
+)
+
+func drawTextWithShadow(rt *ebiten.Image, str string, x, y, scale int, clr color.Color) {
+	offsetY := arcadeFontBaseSize * scale
+	for _, line := range strings.Split(str, "\n") {
+		y += offsetY
+		text.Draw(rt, line, arcadeFonts[scale], x+1, y+1, shadowColor)
+		text.Draw(rt, line, arcadeFonts[scale], x, y, clr)
+	}
+}
+
 func drawTextWithShadowCenter(rt *ebiten.Image, str string, x, y, scale int, clr color.Color, width int) {
-	w := common.ArcadeFont.TextWidth(str) * scale
+	w := textWidth(str) * scale
 	x += (width - w) / 2
-	common.ArcadeFont.DrawTextWithShadow(rt, str, x, y, scale, clr)
+	drawTextWithShadow(rt, str, x, y, scale, clr)
 }
 
 func drawTextWithShadowRight(rt *ebiten.Image, str string, x, y, scale int, clr color.Color, width int) {
-	w := common.ArcadeFont.TextWidth(str) * scale
+	w := textWidth(str) * scale
 	x += width - w
-	common.ArcadeFont.DrawTextWithShadow(rt, str, x, y, scale, clr)
+	drawTextWithShadow(rt, str, x, y, scale, clr)
 }

examples/blocks/blocks/gamepadscene.go

@@ -22,7 +22,6 @@ import (
 	"strings"
 
 	"github.com/hajimehoshi/ebiten"
-	"github.com/hajimehoshi/ebiten/examples/common"
 )
 
 type GamepadScene struct {
@@ -103,5 +102,5 @@ ROTATE RIGHT: %s
 		msg = "OK!"
 	}
 	str := fmt.Sprintf(f, s.buttonStates[0], s.buttonStates[1], s.buttonStates[2], s.buttonStates[3], s.buttonStates[4], msg)
-	common.ArcadeFont.DrawTextWithShadow(screen, str, 16, 16, 1, color.White)
+	drawTextWithShadow(screen, str, 16, 16, 1, color.White)
 }

examples/blocks/blocks/gamescene.go

@@ -25,7 +25,6 @@ import (
 
 	"github.com/hajimehoshi/ebiten"
 	"github.com/hajimehoshi/ebiten/ebitenutil"
-	"github.com/hajimehoshi/ebiten/examples/common"
 )
 
 var (
@@ -85,7 +84,7 @@ func init() {
 
 	// Windows: Next
 	x, y = nextWindowLabelPosition()
-	common.ArcadeFont.DrawTextWithShadow(imageWindows, "NEXT", x, y, 1, fontColor)
+	drawTextWithShadow(imageWindows, "NEXT", x, y, 1, fontColor)
 	x, y = nextWindowPosition()
 	drawWindow(imageWindows, x, y, 5*blockWidth, 5*blockHeight)
 
@@ -115,7 +114,7 @@ func drawWindow(r *ebiten.Image, x, y, width, height int) {
 var fontColor = color.NRGBA{0x40, 0x40, 0xff, 0xff}
 
 func drawTextBox(r *ebiten.Image, label string, x, y, width int) {
-	common.ArcadeFont.DrawTextWithShadow(r, label, x, y, 1, fontColor)
+	drawTextWithShadow(r, label, x, y, 1, fontColor)
 	y += blockWidth
 	drawWindow(r, x, y, width, 2*blockHeight)
 }

examples/blocks/blocks/titlescene.go

@@ -21,7 +21,6 @@ import (
 
 	"github.com/hajimehoshi/ebiten"
 	"github.com/hajimehoshi/ebiten/ebitenutil"
-	"github.com/hajimehoshi/ebiten/examples/common"
 )
 
 var imageBackground *ebiten.Image
@@ -72,9 +71,9 @@ func (s *TitleScene) Draw(r *ebiten.Image) {
 	drawLogo(r, "BLOCKS")
 
 	message := "PRESS SPACE TO START"
-	x := (ScreenWidth - common.ArcadeFont.TextWidth(message)) / 2
+	x := 0
 	y := ScreenHeight - 48
-	common.ArcadeFont.DrawTextWithShadow(r, message, x, y, 1, color.NRGBA{0x80, 0, 0, 0xff})
+	drawTextWithShadowCenter(r, message, x, y, 1, color.NRGBA{0x80, 0, 0, 0xff}, ScreenWidth)
 }
 
 func (s *TitleScene) drawTitleBackground(r *ebiten.Image, c int) {
@@ -93,8 +92,7 @@ func (s *TitleScene) drawTitleBackground(r *ebiten.Image, c int) {
 
 func drawLogo(r *ebiten.Image, str string) {
 	const scale = 4
-	textWidth := common.ArcadeFont.TextWidth(str) * scale
+	x := 0
-	x := (ScreenWidth - textWidth) / 2
 	y := 32
-	common.ArcadeFont.DrawTextWithShadow(r, str, x, y, scale, color.NRGBA{0x00, 0x00, 0x80, 0xff})
+	drawTextWithShadowCenter(r, str, x, y, scale, color.NRGBA{0x00, 0x00, 0x80, 0xff}, ScreenWidth)
 }