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Code Issues Releases Wiki Activity

d2font: encoder

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This commit is contained in:
M. Sz 2021-02-08 15:03:59 +01:00
parent 6df66b51c1
commit 662d4489c4
1 changed files with 51 additions and 36 deletions
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87
d2common/d2fileformats/d2font/font.go
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@ -1,9 +1,6 @@
package d2font
import (
//"os"
//"encoding/binary"
"fmt"
"image/color"
"strings"
@ -13,23 +10,38 @@ import (
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2math"
)
const (
knownSignature = "Woo!\x01"
)
type fontGlyph struct {
frame int
width int
height int
unknown1 []byte
unknown2 []byte
unknown3 []byte
frame int
width int
height int
}
// Font represents a displayable font
type Font struct {
sheet d2interface.Animation
table []byte
glyphs map[rune]fontGlyph
color color.Color
unknownHeaderBytes []byte
sheet d2interface.Animation
table []byte
glyphs map[rune]fontGlyph
color color.Color
}
// Load loads a new font from byte slice
func Load(data []byte, sheet d2interface.Animation) (*Font, error) {
if string(data[:5]) != "Woo!\x01" {
sr := d2datautils.CreateStreamReader(data)
signature, err := sr.ReadBytes(5)
if err != nil {
return nil, err
}
if string(signature) != knownSignature {
return nil, fmt.Errorf("invalid font table format")
}
@ -39,20 +51,12 @@ func Load(data []byte, sheet d2interface.Animation) (*Font, error) {
color: color.White,
}
font.initGlyphs()
ok := true
dw := font.Marshal()
for i := range dw {
if dw[i] != data[i] {
ok = false
}
font.unknownHeaderBytes, err = sr.ReadBytes(7)
if err != nil {
return nil, err
}
_ = ok
//fmt.Println(ok)
//fmt.Println(len(data) == len(dw))
//os.Exit(0)
font.initGlyphs(sr)
return font, nil
}
@ -90,11 +94,6 @@ func (f *Font) GetTextMetrics(text string) (width, height int) {
// RenderText prints a text using its configured style on a Surface (multi-lines are left-aligned, use label otherwise)
func (f *Font) RenderText(text string, target d2interface.Surface) error {
if f.glyphs == nil {
f.sheet.BindRenderer(target.Renderer())
f.initGlyphs()
}
f.sheet.SetColorMod(f.color)
lines := strings.Split(text, "\n")
@ -132,17 +131,12 @@ func (f *Font) RenderText(text string, target d2interface.Surface) error {
return nil
}
func (f *Font) initGlyphs() error {
sr := d2datautils.CreateStreamReader(f.table)
sr.SkipBytes(12)
func (f *Font) initGlyphs(sr *d2datautils.StreamReader) error {
_, maxCharHeight := f.sheet.GetFrameBounds()
glyphs := make(map[rune]fontGlyph)
for i := 12; i < len(f.table); i += 14 {
sr.SetPosition(uint64(i))
code, err := sr.ReadUInt16()
if err != nil {
return err
@ -150,7 +144,10 @@ func (f *Font) initGlyphs() error {
var glyph fontGlyph
sr.SkipBytes(1)
glyph.unknown1, err = sr.ReadBytes(1)
if err != nil {
return err
}
width, err := sr.ReadByte()
if err != nil {
@ -161,7 +158,10 @@ func (f *Font) initGlyphs() error {
glyph.height = maxCharHeight
sr.SkipBytes(4)
glyph.unknown2, err = sr.ReadBytes(4)
if err != nil {
return err
}
frame, err := sr.ReadUInt16()
if err != nil {
@ -170,6 +170,11 @@ func (f *Font) initGlyphs() error {
glyph.frame = int(frame)
glyph.unknown3, err = sr.ReadBytes(4)
if err != nil {
return err
}
glyphs[rune(code)] = glyph
}
@ -182,6 +187,16 @@ func (f *Font) Marshal() []byte {
sw := d2datautils.CreateStreamWriter()
sw.PushBytes([]byte("Woo!\x01")...)
sw.PushBytes(f.unknownHeaderBytes...)
for c, i := range f.glyphs {
sw.PushUint16(uint16(c))
sw.PushBytes(i.unknown1...)
sw.PushBytes(byte(i.width))
sw.PushBytes(i.unknown2...)
sw.PushUint16(uint16(i.frame))
sw.PushBytes(i.unknown3...)
}
return sw.GetBytes()
}