570 lines
14 KiB
Go
570 lines
14 KiB
Go
package main
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import (
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"fmt"
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"os"
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"image"
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"image/draw"
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"image/color"
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"image/png"
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//"strings"
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"encoding/binary"
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"github.com/alexflint/go-arg"
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nesimg "github.com/zorchenhimer/go-retroimg"
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//"github.com/zorchenhimer/go-retroimg/palette"
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)
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type Arguments struct {
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Nametable string `arg:"--nt,required"`
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Chr string `arg:"--chr,required"`
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Output string `arg:"--output,required"`
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IsSprite bool `arg:"--sprites"`
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SpriteSheet bool `arg:"--sprite-sheet"`
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NoBg bool `arg:"--no-bg"` // don't draw hot-pink background
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}
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var (
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tileMissing *nesimg.Tile
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)
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func main() {
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args := &Arguments{}
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arg.MustParse(args)
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var err error
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tileMissing, err = nesimg.NewTileFromPlanes([][]byte{
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{0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x33},
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{0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F} })
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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if err = run(args); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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}
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func run(args *Arguments) error {
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fmt.Println("--")
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fmt.Println("Nametable:", args.Nametable)
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fmt.Println("CHR:", args.Chr)
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fmt.Println("Output:", args.Output)
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fmt.Println("IsSprite:", args.IsSprite)
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fmt.Println("SpriteSheet:", args.SpriteSheet)
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fmt.Println("--")
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chrFile, err := os.Open(args.Chr)
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if err != nil {
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return err
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}
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defer chrFile.Close()
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raw := nesimg.NewRawChr(chrFile)
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tiles, err := raw.ReadAllTiles(nesimg.BD_2bpp)
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if err != nil {
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return err
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}
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//fmt.Printf("first tile: %#v\n", tiles[0])
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//tileUniform_00 := image.NewUniformPaletted(nesimg.DefaultPal_2bpp, 0)
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//tileUniform_F0 := image.NewUniformPaletted(nesimg.DefaultPal_2bpp, 1)
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//tileUniform_0F := image.NewUniformPaletted(nesimg.DefaultPal_2bpp, 2)
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//tileUniform_FF := image.NewUniformPaletted(nesimg.DefaultPal_2bpp, 3)
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tileUniform_00, err := nesimg.NewTileFromPlanes([][]byte{
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} })
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if err != nil {
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return err
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}
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tileUniform_F0, err := nesimg.NewTileFromPlanes([][]byte{
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{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} })
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if err != nil {
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return err
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}
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tileUniform_0F, err := nesimg.NewTileFromPlanes([][]byte{
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF} })
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if err != nil {
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return err
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}
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tileUniform_FF, err := nesimg.NewTileFromPlanes([][]byte{
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{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
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{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF} })
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if err != nil {
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return err
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}
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tiles = append([]*nesimg.Tile{
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tileUniform_00,
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tileUniform_F0,
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tileUniform_0F,
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tileUniform_FF,
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}, tiles...)
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ntData, err := os.ReadFile(args.Nametable)
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if err != nil {
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return err
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}
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layers, err := ReadData(ntData, tiles, args.IsSprite)
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if err != nil {
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return fmt.Errorf("ReadData() error: %w", err)
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}
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uni := image.NewUniform(color.RGBA{0xFF, 0x00, 0xFF, 0xFF})
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var screen *image.RGBA
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if args.SpriteSheet {
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maxWidth := 0
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maxHeight := 0
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for _, l := range layers {
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maxWidth += l.Bounds().Dx()
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if l.Bounds().Dy() > maxHeight {
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maxHeight = l.Bounds().Dy()
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}
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}
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screen = image.NewRGBA(image.Rect(0, 0, maxWidth, maxHeight))
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if !args.NoBg {
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draw.Draw(screen, screen.Bounds(), uni, image.Pt(0, 0), draw.Over)
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}
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loc := image.Pt(0, 0)
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for _, l := range layers {
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draw.Draw(screen, l.Bounds().Add(loc), l, image.Pt(0, 0), draw.Over)
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loc = loc.Add(image.Pt(l.Bounds().Dx(), 0))
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}
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} else {
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screen = image.NewRGBA(image.Rect(0, 0, 32*8, 30*8))
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if !args.NoBg {
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draw.Draw(screen, screen.Bounds(), uni, image.Pt(0, 0), draw.Over)
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}
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for _, l := range layers {
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if args.IsSprite {
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draw.Draw(screen, l.Bounds().Add(l.Location), l, image.Pt(0, 0), draw.Over)
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} else {
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draw.Draw(screen, screen.Bounds(), l, image.Pt(0, 0), draw.Over)
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}
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}
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}
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output, err := os.Create(args.Output)
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if err != nil {
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return err
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}
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defer output.Close()
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err = png.Encode(output, screen)
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if err != nil {
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return err
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}
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//img := image.NewRGBA(image.Rect(0, 0, 32*8, 30*8))
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return nil
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}
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//type UniformPaletted struct {
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// Palette color.Palette
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// Index int
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//}
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//
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//func NewUniformPaletted(palette color.Palette, idx int) *UniformPaletted {
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// if idx >= len(palette) {
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// panic("Index out of palette range")
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// }
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//
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// return &UniformPaletted{
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// Palette: palette,
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// Index: idx,
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// }
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//}
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//
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//func (u *UniformPaletted) At(x, y int) color.Color {
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// if u.Index >= len(u.Palette) {
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// panic("Index out of palette range")
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// }
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//
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// return u.Palette[u.Index]
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//}
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//
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//func (u *UniformPaletted) ColorModel() color.Model {
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// return u.Palette
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//}
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//
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//func (u *UniformPaletted) Bounds() image.Rectangle {
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// // Copied from image.Uniform.Bounds()
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// return image.Rectangle{image.Point{-1e9, -1e9}, image.Point{1e9, 1e9}}
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//}
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func BytesToInt(raw []byte) int {
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if len(raw) > 2 {
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panic("only 8 and 16 bit numbers for now")
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}
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if len(raw) == 1 {
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return int(raw[0])
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}
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return int(raw[1])<<8 | int(raw[0])
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}
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type DataHeader struct {
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PaletteOffset uint16
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ArgB uint16
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ImageCount uint8
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}
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func (h DataHeader) String() string {
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return fmt.Sprintf("{DataHeader PaletteOffset:$%04X ArgB:$%04X ImageCount:%d}",
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h.PaletteOffset,
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h.ArgB,
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h.ImageCount,
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)
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}
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type ImageHeader struct {
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Width uint8
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Height uint8
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AttrLength uint16
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// in pixels
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X uint8
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Y uint8
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}
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func (h ImageHeader) String() string {
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return fmt.Sprintf("{ImageHeader Width:%d[%02X] Height:%d[%02X] AttrLength:$%04X XCoord:%d[%02X] YCoord:%d[%02X]}",
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h.Width, h.Width,
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h.Height, h.Height,
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h.AttrLength,
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h.X, h.X,
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h.Y, h.Y,
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)
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}
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func ReadData(raw []byte, tiles []*nesimg.Tile, isSprites bool) ([]*Layer, error) {
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//raw, err := io.ReadAll(r)
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//if err != nil {
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// return nil, err
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//}
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if isSprites {
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tiles = tiles[4:]
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}
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dataHeader := &DataHeader{}
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_, err := binary.Decode(raw, binary.LittleEndian, dataHeader)
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if err != nil {
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return nil, err
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}
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dataHeader.PaletteOffset += 4
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fmt.Println(dataHeader)
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imgHeaders := []*ImageHeader{}
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for i := 0; i < int(dataHeader.ImageCount); i++ {
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head := &ImageHeader{}
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_, err = binary.Decode(raw[4+(i*6)+1:], binary.LittleEndian, head)
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if err != nil {
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return nil, err
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}
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fmt.Println(head)
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imgHeaders = append(imgHeaders, head)
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}
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palettes := []color.Palette{}
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colorIds := [][]string{}
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for i := 0; i < 4; i++ {
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p := color.Palette{}
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idlist := []string{}
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for j := 0; j < 4; j++ {
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v := raw[int(dataHeader.PaletteOffset)+(i*4)+j]
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if v == 0x3D {
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v = 0x0F
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}
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c, ok := NesColors[v]
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if !ok {
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return nil, fmt.Errorf("Color value $%02X invalid", v)
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}
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p = append(p, c)
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idlist = append(idlist, fmt.Sprintf("%02X", v))
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}
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palettes = append(palettes, p)
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colorIds = append(colorIds, idlist)
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}
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fmt.Println("Palettes:")
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for i := 0; i < len(palettes); i++ {
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fmt.Printf("%s: %v\n", colorIds[i], palettes[i])
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}
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nesTileSize := image.Rect(0, 0, 8, 8)
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offset := 5 + len(imgHeaders) * 6
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layers := []*Layer{}
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for _, head := range imgHeaders {
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rect := image.Rect(0, 0, 32, 30)
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if isSprites {
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rect = image.Rect(0, 0, int(head.Width), int(head.Height))
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}
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l := NewLayer(
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rect,
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nesTileSize,
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palettes,
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)
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l.Transparency = isSprites
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l.Location = image.Pt(int(head.X), int(head.Y))
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l.IsSprite = isSprites
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//tileIds := []int{}
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if isSprites {
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for idx, b := range raw[offset:offset+(int(head.Width)*int(head.Height))] {
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id := int(uint(b)) // is this required to ignore negatives?
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if id < len(tiles) {
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l.Tiles[idx] = tiles[id]
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}
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}
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} else {
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for idx, b := range raw[offset:offset+(int(head.Width)*int(head.Height))] {
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row := idx / int(head.Width)
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col := idx % int(head.Width)
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arrIdx := ((row+int(head.Y/8)) * 32) + (col+int(head.X/8))
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//fmt.Printf("%d ", arrIdx)
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id := int(uint(b)) // is this required to ignore negatives?
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if id < len(tiles) {
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l.Tiles[arrIdx] = tiles[id]
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//tileIds = append(tileIds, id)
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}
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}
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}
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//for idx, t := range tileIds {
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// fmt.Printf("[%d] %02X\n", idx, t)
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//}
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offset += int(head.Width)*int(head.Height)
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if isSprites {
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l.Attributes = raw[offset:offset+int(head.AttrLength)]
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} else {
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// FIXME: This will break on background chunks that aren't a full screen.
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// Need to verify the anchor point in the firmware for this case (for
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// when the tile anchor point isn't aligned to an attribute byte).
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// Partial screen attributes will also be a different size than 8*8.
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l.SetAttributes(raw[offset:offset+int(head.AttrLength)])
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}
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offset += int(head.AttrLength)
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layers = append(layers, l)
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}
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return layers, nil
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}
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type Layer struct {
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Tiles []*nesimg.Tile
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Attributes []byte
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Palettes []color.Palette
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TileSize image.Rectangle
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Location image.Point
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Width int
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Height int
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Transparency bool // true for sprites
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IsSprite bool
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Solid bool
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}
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func NewLayer(layerSize image.Rectangle, tileSize image.Rectangle, palettes []color.Palette) *Layer {
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return &Layer{
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Tiles: make([]*nesimg.Tile, layerSize.Dx()*layerSize.Dy()),
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Attributes: make([]byte, layerSize.Dx()*layerSize.Dy()),
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TileSize: tileSize,
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Location: image.Pt(0, 0),
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Width: layerSize.Dx(),
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Height: layerSize.Dy(),
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Palettes: palettes,
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}
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}
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func (l *Layer) At(x, y int) color.Color {
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if l.Solid {
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return color.RGBA{0x00, 0x00, 0x00, 0xFF}
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}
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width, height := l.TileSize.Dx(), l.TileSize.Dy()
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row := y / height
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col := x / width
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tx := x % width
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ty := y % height
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tileIdx := (row*l.Width)+col
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if l.Tiles[tileIdx] == nil {
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return color.RGBA{0x00, 0x00, 0x00, 0x00}
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//return color.RGBA{0xFF, 0x00, 0xFF, 0xFF}
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}
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colorIdx := l.Tiles[tileIdx].ColorIndexAt(tx, ty)
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if l.Transparency && colorIdx == 0 {
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return color.RGBA{0x00, 0x00, 0x00, 0x00}
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}
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palIdx := l.Attributes[tileIdx]
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return l.Palettes[palIdx][colorIdx]
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}
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func (l *Layer) Bounds() image.Rectangle {
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return image.Rect(0, 0, l.TileSize.Max.X*l.Width, l.TileSize.Max.Y*l.Height)
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}
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func (l *Layer) ColorModel() color.Model {
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return color.RGBAModel
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}
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func (sc *Layer) SetAttributes(data []byte) error {
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if len(data) != 64 {
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return fmt.Errorf("Attribute data must be 64 bytes")
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}
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sc.Attributes = make([]byte, 32*30)
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for row := 0; row < 8; row++ {
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for col := 0; col < 8; col++ {
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src := row*8+col
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start := (row*32)*4 + (col*4)
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raw := data[src]
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br := (raw >> 6) & 0x03
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bl := (raw >> 4) & 0x03
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tr := (raw >> 2) & 0x03
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tl := raw & 0x03
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//if row == 0 && col == 0 {
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// fmt.Printf("br:%02X bl:%02X tr:%02X tl:%02X\n", br, bl, tr, tl)
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//}
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sc.Attributes[start+0+(32*0)] = tl
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sc.Attributes[start+1+(32*0)] = tl
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sc.Attributes[start+0+(32*1)] = tl
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sc.Attributes[start+1+(32*1)] = tl
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sc.Attributes[start+2+(32*0)] = tr
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sc.Attributes[start+3+(32*0)] = tr
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sc.Attributes[start+2+(32*1)] = tr
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sc.Attributes[start+3+(32*1)] = tr
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if row < 7 {
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sc.Attributes[start+0+(32*2)] = bl
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sc.Attributes[start+1+(32*2)] = bl
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sc.Attributes[start+0+(32*3)] = bl
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sc.Attributes[start+1+(32*3)] = bl
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sc.Attributes[start+2+(32*2)] = br
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sc.Attributes[start+3+(32*2)] = br
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sc.Attributes[start+2+(32*3)] = br
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sc.Attributes[start+3+(32*3)] = br
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}
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}
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}
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return nil
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}
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var NesColors map[byte]color.Color = map[byte]color.Color{
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0x00: color.RGBA{0x66, 0x66, 0x66, 0xFF},
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0x10: color.RGBA{0xAD, 0xAD, 0xAD, 0xFF},
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0x20: color.RGBA{0xFF, 0xFF, 0xEF, 0xFF},
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0x30: color.RGBA{0xFF, 0xFF, 0xEF, 0xFF},
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0x01: color.RGBA{0x00, 0x2A, 0x88, 0xFF},
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0x11: color.RGBA{0x15, 0x5F, 0xD9, 0xFF},
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0x21: color.RGBA{0x64, 0xB0, 0xFF, 0xFF},
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0x31: color.RGBA{0xC0, 0xDF, 0xFF, 0xFF},
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0x02: color.RGBA{0x14, 0x12, 0xA7, 0xFF},
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0x12: color.RGBA{0x42, 0x40, 0xFF, 0xFF},
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0x22: color.RGBA{0x92, 0x90, 0xFF, 0xFF},
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0x32: color.RGBA{0xD3, 0xD2, 0xFF, 0xFF},
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0x03: color.RGBA{0x3B, 0x00, 0xA4, 0xFF},
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0x13: color.RGBA{0x75, 0x27, 0xFE, 0xFF},
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0x23: color.RGBA{0xC6, 0x76, 0xFF, 0xFF},
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0x33: color.RGBA{0xE8, 0xC8, 0xFF, 0xFF},
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0x04: color.RGBA{0x5C, 0x00, 0x7E, 0xFF},
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0x14: color.RGBA{0xA0, 0x1A, 0xCC, 0xFF},
|
|
0x24: color.RGBA{0xF3, 0x6A, 0xFF, 0xFF},
|
|
0x34: color.RGBA{0xFB, 0xC2, 0xFF, 0xFF},
|
|
|
|
0x05: color.RGBA{0x6E, 0x00, 0x40, 0xFF},
|
|
0x15: color.RGBA{0xB7, 0x1E, 0x7B, 0xFF},
|
|
0x25: color.RGBA{0xFE, 0x6E, 0xCC, 0xFF},
|
|
0x35: color.RGBA{0xFE, 0xC4, 0xEA, 0xFF},
|
|
|
|
0x06: color.RGBA{0x6C, 0x06, 0x00, 0xFF},
|
|
0x16: color.RGBA{0xB5, 0x31, 0x20, 0xFF},
|
|
0x26: color.RGBA{0xFE, 0x81, 0x70, 0xFF},
|
|
0x36: color.RGBA{0xFE, 0xCC, 0xC5, 0xFF},
|
|
|
|
0x07: color.RGBA{0x56, 0x1D, 0x00, 0xFF},
|
|
0x17: color.RGBA{0x99, 0x4E, 0x00, 0xFF},
|
|
0x27: color.RGBA{0xEA, 0x9E, 0x22, 0xFF},
|
|
0x37: color.RGBA{0xF7, 0xD8, 0xA5, 0xFF},
|
|
|
|
0x08: color.RGBA{0x33, 0x35, 0x00, 0xFF},
|
|
0x18: color.RGBA{0x6B, 0x6D, 0x00, 0xFF},
|
|
0x28: color.RGBA{0xBC, 0xBE, 0x00, 0xFF},
|
|
0x38: color.RGBA{0xE4, 0xE5, 0x94, 0xFF},
|
|
|
|
0x09: color.RGBA{0x0B, 0x48, 0x00, 0xFF},
|
|
0x19: color.RGBA{0x38, 0x87, 0x00, 0xFF},
|
|
0x29: color.RGBA{0x88, 0xD8, 0x00, 0xFF},
|
|
0x39: color.RGBA{0xCF, 0xEF, 0x96, 0xFF},
|
|
|
|
0x0A: color.RGBA{0x00, 0x52, 0x00, 0xFF},
|
|
0x1A: color.RGBA{0x0C, 0x93, 0x00, 0xFF},
|
|
0x2A: color.RGBA{0x5C, 0xE4, 0x30, 0xFF},
|
|
0x3A: color.RGBA{0xBD, 0xF4, 0xAB, 0xFF},
|
|
|
|
0x0B: color.RGBA{0x00, 0x4F, 0x08, 0xFF},
|
|
0x1B: color.RGBA{0x00, 0x8F, 0x32, 0xFF},
|
|
0x2B: color.RGBA{0x45, 0xE0, 0x82, 0xFF},
|
|
0x3B: color.RGBA{0xB3, 0xF3, 0xCC, 0xFF},
|
|
|
|
0x0C: color.RGBA{0x00, 0x40, 0x4D, 0xFF},
|
|
0x1C: color.RGBA{0x00, 0x7C, 0x8D, 0xFF},
|
|
0x2C: color.RGBA{0x48, 0xCD, 0xDE, 0xFF},
|
|
0x3C: color.RGBA{0xB5, 0xEB, 0xF2, 0xFF},
|
|
|
|
0x0D: color.RGBA{0x00, 0x00, 0x00, 0xFF},
|
|
0x1D: color.RGBA{0x00, 0x7C, 0x8D, 0xFF},
|
|
0x2D: color.RGBA{0x4F, 0x4F, 0x4F, 0xFF},
|
|
0x3D: color.RGBA{0xB8, 0xB8, 0xB8, 0xFF},
|
|
|
|
0x0E: color.RGBA{0x00, 0x00, 0x00, 0xFF},
|
|
0x1E: color.RGBA{0x00, 0x00, 0x00, 0xFF},
|
|
0x2E: color.RGBA{0x00, 0x00, 0x00, 0xFF},
|
|
0x3E: color.RGBA{0x00, 0x00, 0x00, 0xFF},
|
|
|
|
0x0F: color.RGBA{0x00, 0x00, 0x00, 0xFF},
|
|
0x1F: color.RGBA{0x00, 0x00, 0x00, 0xFF},
|
|
0x2F: color.RGBA{0x00, 0x00, 0x00, 0xFF},
|
|
0x3F: color.RGBA{0x00, 0x00, 0x00, 0xFF},
|
|
}
|
|
|