package main import ( "flag" "fmt" "image" "image/color" "image/png" "os" "path" "path/filepath" "github.com/FooSoft/lazarus/formats/dat" "github.com/FooSoft/lazarus/formats/dc6" ) func loadPalette(path string) (*dat.Palette, error) { fp, err := os.Open(path) if err != nil { return nil, err } defer fp.Close() return dat.NewFromReader(fp) } func loadSprite(path string) (*dc6.Sprite, error) { fp, err := os.Open(path) if err != nil { return nil, err } defer fp.Close() return dc6.NewFromReader(fp) } func extractSprite(spritePath string, palette *dat.Palette, targetDir string) error { sprite, err := loadSprite(spritePath) if err != nil { return err } for di, direction := range sprite.Directions { for fi, frame := range direction.Frames { img := image.NewRGBA(image.Rect(0, 0, frame.Size.X, frame.Size.Y)) for y := 0; y < frame.Size.Y; y++ { for x := 0; x < frame.Size.X; x++ { colorSrc := palette.Colors[frame.Data[y*frame.Size.X+x]] colorDst := color.RGBA{colorSrc.R, colorSrc.G, colorSrc.B, 0xff} img.Set(x, y, colorDst) } } basePath := filepath.Base(spritePath) targetPath := fmt.Sprintf("%s_%d_%d.png", filepath.Join(targetDir, basePath), di, fi) fp, err := os.Create(targetPath) if err != nil { return err } defer fp.Close() if err := png.Encode(fp, img); err != nil { return err } } } return nil } func main() { targetDir := flag.String("target", ".", "target directory") flag.Usage = func() { fmt.Fprintf(os.Stderr, "Usage: %s [options] palette_file [dc6_files]\n", path.Base(os.Args[0])) fmt.Fprintf(os.Stderr, "Parameters:\n\n") flag.PrintDefaults() } flag.Parse() if flag.NArg() < 1 { flag.Usage() os.Exit(2) } palette, err := loadPalette(flag.Arg(0)) if err != nil { fmt.Fprintln(os.Stderr, err) os.Exit(1) } for i := 1; i < flag.NArg(); i++ { if err := extractSprite(flag.Arg(1), palette, *targetDir); err != nil { fmt.Fprintln(os.Stderr, err) os.Exit(1) } } }