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examples/blocks: Fix initializing fonts not to depend on init() order

Browse Source 
https://golang.org/ref/spec#Package_initialization
It is expected that init() is executed in file name order,
but this is not 100%.
This commit is contained in:
Hajime Hoshi 2018-03-17 01:56:23 +09:00
parent 530041b4f2
commit d8ba49eaab
1 changed files with 20 additions and 16 deletions
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36
examples/blocks/blocks/font.go
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@ -32,27 +32,31 @@ const (
)
var (
arcadeFonts = map[int]font.Face{}
arcadeFonts map[int]font.Face
)
func init() {
tt, err := truetype.Parse(fonts.ArcadeN_ttf)
if err != nil {
log.Fatal(err)
}
func getArcadeFonts(scale int) font.Face {
if arcadeFonts == nil {
tt, err := truetype.Parse(fonts.ArcadeN_ttf)
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,
})
arcadeFonts = map[int]font.Face{}
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,
})
}
}
return arcadeFonts[scale]
}
func textWidth(str string) int {
b, _ := font.BoundString(arcadeFonts[1], str)
b, _ := font.BoundString(getArcadeFonts(1), str)
return (b.Max.X - b.Min.X).Ceil()
}
@ -64,8 +68,8 @@ func drawTextWithShadow(rt *ebiten.Image, str string, x, y, scale int, clr 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)
text.Draw(rt, line, getArcadeFonts(scale), x+1, y+1, shadowColor)
text.Draw(rt, line, getArcadeFonts(scale), x, y, clr)
}
}