font format: refactor: moved font glyph into new package

d2common/d2fileformats/d2font/d2fontglyph/font_glyph.go

@@ -0,0 +1,73 @@
+// Package d2fontglyph represents a single font glyph
+package d2fontglyph
+
+// Create creates a new font glyph
+func Create(frame, width, height int) *FontGlyph {
+	// nolint:gomnd // thes bytes are constant
+	// comes from https://d2mods.info/forum/viewtopic.php?t=42044
+	result := &FontGlyph{
+		unknown1: []byte{0, 0},
+		unknown2: []byte{1, 0, 0},
+		unknown3: []byte{0, 0, 0, 0, 0},
+		frame:    frame,
+		width:    width,
+		height:   height,
+	}
+
+	return result
+}
+
+// FontGlyph represents a single font glyph
+type FontGlyph struct {
+	unknown1 []byte
+	unknown2 []byte
+	unknown3 []byte
+	frame    int
+	width    int
+	height   int
+}
+
+// SetSize sets glyph's size to w, h
+func (fg *FontGlyph) SetSize(w, h int) {
+	fg.width, fg.height = w, h
+}
+
+// Size returns glyph's size
+func (fg *FontGlyph) Size() (w, h int) {
+	return fg.width, fg.height
+}
+
+// Width returns font width
+func (fg *FontGlyph) Width() int {
+	return fg.width
+}
+
+// Height returns glyph's height
+func (fg *FontGlyph) Height() int {
+	return fg.height
+}
+
+// SetFrameIndex sets frame index to idx
+func (fg *FontGlyph) SetFrameIndex(idx int) {
+	fg.frame = idx
+}
+
+// FrameIndex returns glyph's frame
+func (fg *FontGlyph) FrameIndex() int {
+	return fg.frame
+}
+
+// Unknown1 returns unknowns bytes
+func (fg *FontGlyph) Unknown1() []byte {
+	return fg.unknown1
+}
+
+// Unknown2 returns unknowns bytes
+func (fg *FontGlyph) Unknown2() []byte {
+	return fg.unknown2
+}
+
+// Unknown3 returns unknowns bytes
+func (fg *FontGlyph) Unknown3() []byte {
+	return fg.unknown3
+}

d2common/d2fileformats/d2font/defaults.go

@@ -1,17 +0,0 @@
-package d2font
-
-// NewFontGlyph creates a new font glyph
-func NewFontGlyph(frame, width, height int) *FontGlyph {
-	// nolint:gomnd // thes bytes are constant
-	// comes from https://d2mods.info/forum/viewtopic.php?t=42044
-	result := &FontGlyph{
-		unknown1: []byte{0, 0},
-		unknown2: []byte{1, 0, 0},
-		unknown3: []byte{0, 0, 0, 0, 0},
-		frame:    frame,
-		width:    width,
-		height:   height,
-	}
-
-	return result
-}

d2common/d2fileformats/d2font/font.go

@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2datautils"
+	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2fileformats/d2font/d2fontglyph"
 	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
 	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2math"
 )
@@ -22,42 +23,12 @@ const (
 	unknown3BytesCount      = 4
 )
 
-// FontGlyph represents a single font glyph
-type FontGlyph struct {
-	unknown1 []byte
-	unknown2 []byte
-	unknown3 []byte
-	frame    int
-	width    int
-	height   int
-}
-
-// SetSize sets glyph's size to w, h
-func (fg *FontGlyph) SetSize(w, h int) {
-	fg.width, fg.height = w, h
-}
-
-// Size returns glyph's size
-func (fg *FontGlyph) Size() (w, h int) {
-	return fg.width, fg.height
-}
-
-// SetFrameIndex sets frame index to idx
-func (fg *FontGlyph) SetFrameIndex(idx int) {
-	fg.frame = idx
-}
-
-// FrameIndex returns glyph's frame
-func (fg *FontGlyph) FrameIndex() int {
-	return fg.frame
-}
-
 // Font represents a displayable font
 type Font struct {
 	unknownHeaderBytes []byte
 	sheet              d2interface.Animation
 	table              []byte
-	Glyphs             map[rune]*FontGlyph
+	Glyphs             map[rune]*d2fontglyph.FontGlyph
 	color              color.Color
 }
 
@@ -100,7 +71,7 @@ func (f *Font) SetBackground(sheet d2interface.Animation) {
 	_, h := f.sheet.GetFrameBounds()
 
 	for i := range f.Glyphs {
-		f.Glyphs[i].SetSize(f.Glyphs[i].width, h)
+		f.Glyphs[i].SetSize(f.Glyphs[i].Width(), h)
 	}
 }
 
@@ -123,8 +94,8 @@ func (f *Font) GetTextMetrics(text string) (width, height int) {
 			lineWidth = 0
 			lineHeight = 0
 		} else if glyph, ok := f.Glyphs[c]; ok {
-			lineWidth += glyph.width
+			lineWidth += glyph.Width()
-			lineHeight = d2math.MaxInt(lineHeight, glyph.height)
+			lineHeight = d2math.MaxInt(lineHeight, glyph.Height())
 		}
 	}
 
@@ -152,16 +123,16 @@ func (f *Font) RenderText(text string, target d2interface.Surface) error {
 				continue
 			}
 
-			if err := f.sheet.SetCurrentFrame(glyph.frame); err != nil {
+			if err := f.sheet.SetCurrentFrame(glyph.FrameIndex()); err != nil {
 				return err
 			}
 
 			f.sheet.Render(target)
 
-			lineHeight = d2math.MaxInt(lineHeight, glyph.height)
+			lineHeight = d2math.MaxInt(lineHeight, glyph.Height())
 			lineLength++
 
-			target.PushTranslation(glyph.width, 0)
+			target.PushTranslation(glyph.Width(), 0)
 		}
 
 		target.PopN(lineLength)
@@ -174,7 +145,7 @@ func (f *Font) RenderText(text string, target d2interface.Surface) error {
 }
 
 func (f *Font) initGlyphs(sr *d2datautils.StreamReader) error {
-	glyphs := make(map[rune]*FontGlyph)
+	glyphs := make(map[rune]*d2fontglyph.FontGlyph)
 
 	for i := 12; i < len(f.table); i += 14 {
 		code, err := sr.ReadUInt16()
@@ -182,48 +153,33 @@ func (f *Font) initGlyphs(sr *d2datautils.StreamReader) error {
 			return err
 		}
 
-		var glyph FontGlyph
-
 		// two bytes of 0
-		glyph.unknown1, err = sr.ReadBytes(unknown1BytesCount)
+		sr.SkipBytes(unknown1BytesCount)
-		if err != nil {
-			return err
-		}
 
 		width, err := sr.ReadByte()
 		if err != nil {
 			return err
 		}
 
-		glyph.width = int(width)
-
 		height, err := sr.ReadByte()
 		if err != nil {
 			return err
 		}
 
-		glyph.height = int(height)
-
 		// 1, 0, 0
-		glyph.unknown2, err = sr.ReadBytes(unknown2BytesCount)
+		sr.SkipBytes(unknown2BytesCount)
-		if err != nil {
-			return err
-		}
 
 		frame, err := sr.ReadUInt16()
 		if err != nil {
 			return err
 		}
 
-		glyph.frame = int(frame)
-
 		// 1, 0, 0, character code repeated, and further 0.
-		glyph.unknown3, err = sr.ReadBytes(unknown3BytesCount)
+		sr.SkipBytes(unknown3BytesCount)
-		if err != nil {
-			return err
-		}
 
-		glyphs[rune(code)] = &glyph
+		glyph := d2fontglyph.Create(int(width), int(height), int(frame))
+
+		glyphs[rune(code)] = glyph
 	}
 
 	f.Glyphs = glyphs
@@ -240,12 +196,12 @@ func (f *Font) Marshal() []byte {
 
 	for c, i := range f.Glyphs {
 		sw.PushUint16(uint16(c))
-		sw.PushBytes(i.unknown1...)
+		sw.PushBytes(i.Unknown1()...)
-		sw.PushBytes(byte(i.width))
+		sw.PushBytes(byte(i.Width()))
-		sw.PushBytes(byte(i.height))
+		sw.PushBytes(byte(i.Height()))
-		sw.PushBytes(i.unknown2...)
+		sw.PushBytes(i.Unknown2()...)
-		sw.PushUint16(uint16(i.frame))
+		sw.PushUint16(uint16(i.FrameIndex()))
-		sw.PushBytes(i.unknown3...)
+		sw.PushBytes(i.Unknown3()...)
 	}
 
 	return sw.GetBytes()