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| package main | |
| import ( | |
| "bytes" | |
| "encoding/binary" | |
| "flag" | |
| "fmt" | |
| "io" | |
| "io/ioutil" | |
| "math" | |
| //"os" | |
| "path/filepath" | |
| ) | |
| var le = binary.LittleEndian | |
| var ( | |
| totalVcount uint32 = 1 | |
| totalNcount uint32 = 1 | |
| totalTCcount uint32 = 1 | |
| hasNormals = false | |
| ) | |
| var symbols []string | |
| type readBuf []byte | |
| func (buf readBuf) uint32(off uint32) uint32 { | |
| return le.Uint32(buf[off:]) | |
| } | |
| func (buf readBuf) uint16(off uint32) uint16 { | |
| return le.Uint16(buf[off:]) | |
| } | |
| func (buf readBuf) float32(off uint32) float32 { | |
| return math.Float32frombits(buf.uint32(off)) | |
| } | |
| func main() { | |
| flag.Parse() | |
| srcfn := flag.Arg(0) | |
| dstfn := flag.Arg(1) | |
| dstdir := flag.Arg(2) | |
| if dstdir == "" { | |
| dstdir = "." | |
| } | |
| data, err := ioutil.ReadFile(srcfn) | |
| if err != nil { | |
| fmt.Println(err) | |
| return | |
| } | |
| if data[0] != 'P' || data[1] != 'C' { | |
| fmt.Println("not a pokémon model") | |
| return | |
| } | |
| bch := readBuf(data) | |
| bch = bch[bch.uint32(0x4):] | |
| if bch[0] != 'B' || bch[1] != 'C' || bch[2] != 'H' || bch[3] != 0 { | |
| fmt.Println("not a BCH") | |
| return | |
| } | |
| // 0 [4]byte "BCH\x00" | |
| // 4 [4]byte 07 07 0D 97 | |
| // 8 uint32 38 | |
| // C symbol offset | |
| // 10 desc offset | |
| // 14 data offset | |
| // 18 unknown offset | |
| // 1C size of 08 | |
| // 20 size of symbols | |
| // 24 size of desc table | |
| // 28 size of data table | |
| // 2C size of 18 | |
| // 30 e.g. 0x26B8 | |
| // 34 e.g. 0x73D0 | |
| info := bch[bch.uint32(0x08) : bch.uint32(0x08)+bch.uint32(0x1C)] | |
| symb := bch[bch.uint32(0x0C) : bch.uint32(0x0C)+bch.uint32(0x20)] | |
| desc := bch[bch.uint32(0x10) : bch.uint32(0x10)+bch.uint32(0x24)] | |
| vert := bch[bch.uint32(0x14) : bch.uint32(0x14)+bch.uint32(0x28)] | |
| off := info.uint32(0xCC) | |
| texTableOffset := info.uint32(off + 0x34) | |
| texTableEntries := info.uint32(off + 0x38) | |
| tableOffset := info.uint32(off + 0x40) | |
| tableEntries := info.uint32(off + 0x44) | |
| var out bytes.Buffer | |
| p := info[texTableOffset:] | |
| for i := uint32(0); i != texTableEntries; i++ { | |
| s := parseTexTableEntry(&out, p, symb) | |
| symbols = append(symbols, s) | |
| p = p[0x58:] | |
| } | |
| err = ioutil.WriteFile(filepath.Join(dstdir, dstfn+".mtl"), out.Bytes(), 0666) | |
| if err != nil { | |
| fmt.Println(err) | |
| return | |
| } | |
| out.Reset() | |
| //f, err := os.Create(filepath.Join(dstdir, dstfn+".obj")) | |
| //if err != nil { | |
| // fmt.Println(err) | |
| // return | |
| //} | |
| //defer f.Close() | |
| fmt.Fprintf(&out, "mtllib %s.mtl\n", dstfn) | |
| for i := uint32(0); i != tableEntries; i++ { | |
| offset := tableOffset + i*0x38 | |
| parseTableEntry(&out, offset, info[offset:], info, desc, vert) | |
| } | |
| err = ioutil.WriteFile(filepath.Join(dstdir, dstfn+".obj"), out.Bytes(), 0666) | |
| if err != nil { | |
| fmt.Println(err) | |
| return | |
| } | |
| } | |
| func parseTexTableEntry(out io.Writer, data, symb readBuf) string { | |
| // 0 uint32 pointer, relative to info chunk | |
| // 18 . 00 03 02 00 02 00 00 00 00 00 00 00 00 00 00 FF | |
| // 28 . 01 03 02 00 02 00 00 00 00 00 00 00 00 00 00 FF | |
| // 38 . 01 02 02 01 05 00 00 00 00 00 00 00 00 00 00 FF | |
| // 48 uint32 diffuse map symbol | |
| // 4C uint32 ?? map symbol | |
| // 50 uint32 normal map symbol | |
| // 54 uint32 texture name symbol | |
| s := string(parseSymbol(symb, data.uint32(0x54))) | |
| fmt.Fprintf(out, "newmtl %s\n", s) | |
| // Uhh | |
| io.WriteString(out, "illum 2\n") | |
| io.WriteString(out, "Kd 0.8 0.8 0.8\n") | |
| io.WriteString(out, "Ka 0.8 0.8 0.8\n") | |
| io.WriteString(out, "Ks 0.0 0.0 0.0\n") | |
| io.WriteString(out, "Ke 0.0 0.0 0.0\n") | |
| io.WriteString(out, "Ns 0.0\n") | |
| fmt.Fprintf(out, "map_Kd %s.png\n", parseSymbol(symb, data.uint32(0x48))) | |
| fmt.Fprintf(out, "# %s.png\n", parseSymbol(symb, data.uint32(0x4C))) | |
| fmt.Fprintf(out, "# %s.png\n", parseSymbol(symb, data.uint32(0x50))) | |
| io.WriteString(out, "\n") | |
| return s | |
| } | |
| func parseSymbol(s readBuf, i uint32) readBuf { | |
| s = s[i:] | |
| s = s[:bytes.IndexByte(s, 0)] | |
| return s | |
| } | |
| func parseTableEntry(out io.Writer, o uint32, entry, info, desc, tbl readBuf) { | |
| // Table entry | |
| // 0 uint16 texture ID | |
| // 4 uint32 vf2 | |
| // 8 uint32 vertex desc offset, relative to desc | |
| // C uint32 count? | |
| // 10 uint32 face offset, relative to info chunk | |
| // 14 uint32 face count | |
| // 1C uint32 | |
| // 34 uint32 face offset 2, relative to info chunk | |
| // | |
| // Face entry | |
| // length: 0x34 | |
| // 0 uint16 1 | |
| // 2 uint16 count | |
| // 4 [0x14]uint16 unknown, first $count are set | |
| // 2C uint32 face desc offset | |
| // 30 uint32 0x18 | |
| // | |
| // Face entry 2 | |
| // length: 0x48 | |
| // C uint32 FFFFFFFF | |
| // | |
| texID := entry.uint16(0x0) | |
| vf2 := entry.uint32(0x4) | |
| vtxOffset := entry.uint32(0x8) | |
| vtx := desc[vtxOffset:] | |
| vf := entry.uint32(0xC) | |
| faceOffset := entry.uint32(0x10) | |
| faceCount := int(entry.uint32(0x14)) | |
| face := info[faceOffset:] | |
| fmt.Fprintf(out, "# desc0 %#x\n", faceOffset) | |
| for i := 0; i < faceCount; i++ { | |
| //face := face[uint32(i)*34:] | |
| //fmt.Fprintf(out, "# flag %#x\n", face.uint16(2)) | |
| //fmt.Fprintf(out, "# offset %#x\n", face.uint32(0x2C)) | |
| } | |
| fmt.Fprintf(out, "# %#x %#x %#x %#x %#x %#x\n", | |
| o, | |
| entry.uint32(0), | |
| vf2, | |
| vf, | |
| entry.uint32(0x14), | |
| entry.uint32(0x1c), | |
| ) | |
| // Compute number of vertices. | |
| // TODO: Figure out the proper way to do this. | |
| vo := vtx.uint32(0x30) | |
| fo := desc.uint32(face.uint32(0x2C) + 0x10) | |
| vn := int((fo - vo) / uint32(vtx[0x3A])) | |
| parseVTX(out, vtx, tbl, fo-vo) | |
| //fmt.Fprintf(out, "g OBJ_%#x\n", o) | |
| fmt.Fprintf(out, "usemtl %s\n", symbols[texID]) | |
| for i := 0; i < faceCount; i++ { | |
| off := face.uint32(0x2C) | |
| fmt.Fprintf(out, "g face_%x\n", off) | |
| //fmt.Fprintf(out, "# flag %#x\n", face.uint16(2)) | |
| fmt.Fprintf(out, "# face offset %#x\n", off) | |
| parseFC(out, desc[off:], tbl, vn) | |
| face = face[0x34:] | |
| io.WriteString(out, "\n") | |
| } | |
| totalVcount += uint32(vn) | |
| totalNcount += uint32(vn) | |
| totalTCcount += uint32(vn) | |
| } | |
| func parseVTX(out io.Writer, vtx, tbl readBuf, size uint32) { | |
| // 30 offset, relative to data table | |
| // 3A "format" (record size) | |
| offset := vtx.uint32(0x30) | |
| format := uint32(vtx[0x3A]) | |
| fmt.Fprintf(out, "# vertex format %#x\n", format) | |
| parseVertices(out, tbl[offset:offset+size], format) | |
| } | |
| func parseFC(out io.Writer, desc, tbl readBuf, vn int) { | |
| // 10 uint32 offset, relative to data table | |
| // 18 uint32 count | |
| // A8 uint8 header data (huh? actually byte C in the third face after this one) | |
| format := uint32(1) | |
| if vn > 256 { | |
| format = uint32(2) | |
| } | |
| fmt.Fprintf(out, "# face format %#x\n", format) | |
| offset := desc.uint32(0x10) | |
| size := desc.uint32(0x18) * format | |
| fmt.Fprintf(out, "# vn %#x\n", vn) | |
| fmt.Fprintf(out, "# size %#x\n", size) | |
| fmt.Fprintf(out, "# %#x %#x\n", desc[0x0C], desc[0xA8]) | |
| parseFaces(out, tbl[offset:offset+size], format) | |
| } | |
| func parseVertices(out io.Writer, data readBuf, f uint32) { | |
| for len(data) > 0 { | |
| fmt.Fprintf(out, "v % 11f % 11f % 11f\n", data.float32(0), data.float32(4), data.float32(8)) | |
| fmt.Fprintf(out, "vn % 11f % 11f % 11f\n", data.float32(12), data.float32(16), data.float32(20)) | |
| fmt.Fprintf(out, "vt % 11f % 11f\n", adaptU(data.float32(24)), data.float32(28)) | |
| hasNormals = true | |
| data = data[f:] | |
| } | |
| } | |
| func parseFaces(out io.Writer, data readBuf, f uint32) { | |
| switch f { | |
| case 1: | |
| // for u8 face descriptors | |
| for ; len(data) > 0; data = data[3*f:] { | |
| a, b, c := uint32(data[0]), uint32(data[1]), uint32(data[2]) | |
| fmt.Fprintf(out, "f %d/%d/%d %d/%d/%d %d/%d/%d\n", | |
| a+totalVcount, a+totalTCcount, a+totalNcount, | |
| b+totalVcount, b+totalTCcount, b+totalNcount, | |
| c+totalVcount, c+totalTCcount, c+totalNcount, | |
| ) | |
| } | |
| case 2: | |
| // for u16 face descriptors | |
| for ; len(data) > 0; data = data[3*f:] { | |
| a, b, c := uint32(data.uint16(0)), uint32(data.uint16(2)), uint32(data.uint16(4)) | |
| fmt.Fprintf(out, "f %d/%d/%d %d/%d/%d %d/%d/%d\n", | |
| a+totalVcount, a+totalTCcount, a+totalNcount, | |
| b+totalVcount, b+totalTCcount, b+totalNcount, | |
| c+totalVcount, c+totalTCcount, c+totalNcount, | |
| ) | |
| } | |
| } | |
| } | |
| // Double and mirror the X coordinate of the texture vertex. | |
| // Note: the Egg texture should not be mirrored. | |
| func adaptU(u float32) float32 { | |
| u *= 2 | |
| //if u > 1 { | |
| // u = 2 - u | |
| //} | |
| //if u < 0 { | |
| // u = -u | |
| //} | |
| return u | |
| } |
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| package main | |
| import ( | |
| "bytes" | |
| "encoding/binary" | |
| "flag" | |
| "fmt" | |
| "image" | |
| "image/png" | |
| "io/ioutil" | |
| "os" | |
| "path/filepath" | |
| ) | |
| var le = binary.LittleEndian | |
| func die(v ...interface{}) { | |
| fmt.Println(v...) | |
| os.Exit(1) | |
| } | |
| type readBuf []byte | |
| func (buf readBuf) uint32(off uint32) uint32 { | |
| return le.Uint32(buf[off:]) | |
| } | |
| func (buf readBuf) uint16(off uint32) uint16 { | |
| return le.Uint16(buf[off:]) | |
| } | |
| func main() { | |
| dryrun := flag.Bool("dry", false, "dry run - don't save files") | |
| flag.Parse() | |
| srcfn := flag.Arg(0) | |
| dstdir := flag.Arg(1) | |
| srcdata, err := ioutil.ReadFile(srcfn) | |
| if err != nil { | |
| die(err) | |
| } | |
| if srcdata[0] != 'P' || srcdata[1] != 'T' { | |
| die("not a texture") | |
| } | |
| bch := readBuf(srcdata) | |
| if bch.uint16(2) == 3 { | |
| if len(bch) <= 0x180 { | |
| return | |
| } | |
| bch = bch[0x180:] | |
| } else { | |
| if len(srcdata) <= 0x80 { | |
| return | |
| } | |
| bch = bch[0x80:] | |
| } | |
| info := bch[bch.uint32(0x8) : bch.uint32(0x8)+bch.uint32(0x1C)] | |
| symb := bch[bch.uint32(0xC) : bch.uint32(0xC)+bch.uint32(0x20)] | |
| desc := bch[bch.uint32(0x10) : bch.uint32(0x10)+bch.uint32(0x24)] | |
| data := bch[bch.uint32(0x14) : bch.uint32(0x14)+bch.uint32(0x28)] | |
| tblOffset := info.uint32(0x24) | |
| numTex := int(info.uint32(0x28)) | |
| p := info[tblOffset:] | |
| for i := 0; i < numTex; i++ { | |
| tbl := info[p.uint32(0):] | |
| texOffset := tbl.uint32(0x00) | |
| symOffset := tbl.uint32(0x1C) | |
| texFormat := tbl[0x18] | |
| p = p[4:] | |
| sym := parseSymbol(symb[symOffset:]) | |
| fmt.Printf("%s %x\n", sym, texFormat) | |
| img := parseEntry(desc[texOffset:], data) | |
| if img == nil { | |
| //fmt.Println("nil image") | |
| continue | |
| } | |
| if *dryrun { | |
| continue | |
| } | |
| err := writePNG(img, filepath.Join(dstdir, sym+".png")) | |
| if err != nil { | |
| fmt.Println(err) | |
| } | |
| } | |
| } | |
| func writePNG(img image.Image, filename string) error { | |
| f, err := os.Create(filename) | |
| if err != nil { | |
| return err | |
| } | |
| defer f.Close() | |
| return png.Encode(f, img) | |
| } | |
| func parseSymbols(data []byte, n int) (sym []string) { | |
| for len(sym) < n { | |
| i := bytes.IndexByte(data, 0) | |
| sym = append(sym, string(data[:i])) | |
| data = data[i+1:] | |
| } | |
| return sym | |
| } | |
| func parseSymbol(sym []byte) string { | |
| return string(sym[:bytes.IndexByte(sym, 0)]) | |
| } | |
| func parseEntry(entry, data readBuf) image.Image { | |
| // 0 uint16 height | |
| // 2 uint16 width | |
| // 8 uint32 texture offset | |
| // 10 uint32 texture format | |
| // | |
| w := int(entry.uint16(2)) | |
| h := int(entry.uint16(0)) | |
| if w == 0 && h == 0 { | |
| //fmt.Println("zero width or height") | |
| return nil | |
| } | |
| offset := entry.uint32(8) | |
| fmt := entry.uint32(16) | |
| img := parseTexture(data[offset:], w, h, fmt) | |
| return img | |
| } | |
| // Texture formats | |
| const ( | |
| tfRGBA8 = iota | |
| tfRGB8 | |
| tfRGBA5551 | |
| tfRGB565 | |
| tfRGBA4 | |
| tfGA8 | |
| _ | |
| tfG8 | |
| tfA8 | |
| tfGA4 | |
| tfG4 | |
| ) | |
| func parseTexture(data []byte, w, h int, tf uint32) (img image.Image) { | |
| bpp := 0 | |
| var ( | |
| nrgba *image.NRGBA | |
| gray *image.Gray | |
| ) | |
| switch tf { | |
| case tfRGBA8: | |
| bpp = 32 | |
| nrgba = image.NewNRGBA(image.Rect(0, 0, w, h)) | |
| img = nrgba | |
| case tfRGB8: | |
| bpp = 24 | |
| nrgba = image.NewNRGBA(image.Rect(0, 0, w, h)) | |
| img = nrgba | |
| case tfRGBA5551, tfRGB565, tfGA8: | |
| bpp = 16 | |
| nrgba = image.NewNRGBA(image.Rect(0, 0, w, h)) | |
| img = nrgba | |
| case tfG8: | |
| bpp = 8 | |
| gray = image.NewGray(image.Rect(0, 0, w, h)) | |
| img = gray | |
| default: | |
| fmt.Println("unknown texture format", tf) | |
| return | |
| } | |
| stride := 8 * 8 * bpp / 8 | |
| //fmt.Println(tf, w, h, stride) | |
| for y := 0; y+8 <= h; y += 8 { | |
| for x := 0; x+8 <= w; x += 8 { | |
| switch tf { | |
| case tfRGBA8: | |
| for ty := 0; ty < 8; ty++ { | |
| for tx := 0; tx < 8; tx++ { | |
| di := nrgba.PixOffset(x+tx, y+ty) | |
| si := mingle(tx, ty) * bpp / 8 | |
| nrgba.Pix[di+0] = data[si+3] | |
| nrgba.Pix[di+1] = data[si+2] | |
| nrgba.Pix[di+2] = data[si+1] | |
| nrgba.Pix[di+3] = data[si+0] | |
| } | |
| } | |
| case tfRGB8: | |
| for ty := 0; ty < 8; ty++ { | |
| for tx := 0; tx < 8; tx++ { | |
| di := nrgba.PixOffset(x+tx, y+ty) | |
| si := mingle(tx, ty) * bpp / 8 | |
| nrgba.Pix[di+0] = data[si+2] | |
| nrgba.Pix[di+1] = data[si+1] | |
| nrgba.Pix[di+2] = data[si+0] | |
| nrgba.Pix[di+3] = 0xFF | |
| } | |
| } | |
| case tfRGBA5551: | |
| for ty := 0; ty < 8; ty++ { | |
| for tx := 0; tx < 8; tx++ { | |
| di := nrgba.PixOffset(x+tx, y+ty) | |
| si := mingle(tx, ty) * bpp / 8 | |
| pix := uint16(data[si]) | uint16(data[si])<<8 | |
| nrgba.Pix[di+0] = uint8((pix>>1&31*0xff + 15) / 31) | |
| nrgba.Pix[di+1] = uint8((pix>>6&31*0xff + 15) / 31) | |
| nrgba.Pix[di+2] = uint8((pix>>11&31*0xff + 15) / 31) | |
| nrgba.Pix[di+3] = uint8((pix & 1) * 0xff) | |
| } | |
| } | |
| case tfRGB565: | |
| for ty := 0; ty < 8; ty++ { | |
| for tx := 0; tx < 8; tx++ { | |
| di := nrgba.PixOffset(x+tx, y+ty) | |
| si := mingle(tx, ty) * bpp / 8 | |
| pix := uint16(data[si]) | uint16(data[si])<<8 | |
| nrgba.Pix[di+0] = uint8((pix>>0&31*0xff + 15) / 31) | |
| nrgba.Pix[di+1] = uint8((pix>>6&63*0xff + 31) / 63) | |
| nrgba.Pix[di+2] = uint8((pix>>11&31*0xff + 15) / 31) | |
| nrgba.Pix[di+3] = 0xFF | |
| } | |
| } | |
| case tfGA8: | |
| for ty := 0; ty < 8; ty++ { | |
| for tx := 0; tx < 8; tx++ { | |
| di := nrgba.PixOffset(x+tx, y+ty) | |
| si := mingle(tx, ty) * bpp / 8 | |
| nrgba.Pix[di+0] = data[si+1] | |
| nrgba.Pix[di+1] = data[si+1] | |
| nrgba.Pix[di+2] = data[si+1] | |
| nrgba.Pix[di+3] = data[si+0] | |
| } | |
| } | |
| case tfG8: | |
| for ty := 0; ty < 8; ty++ { | |
| for tx := 0; tx < 8; tx++ { | |
| di := gray.PixOffset(x+tx, y+ty) | |
| si := mingle(tx, ty) * bpp / 8 | |
| gray.Pix[di] = data[si] | |
| } | |
| } | |
| } | |
| data = data[stride:] | |
| } | |
| } | |
| return img | |
| } | |
| func mingle(x, y int) int { | |
| x = (x | x<<2) & 0x33 | |
| x = (x | x<<1) & 0x55 | |
| y = (y | y<<2) & 0x33 | |
| y = (y | y<<1) & 0x55 | |
| return x | y<<1 | |
| } |
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