163 lines
3.3 KiB
Go
163 lines
3.3 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"log"
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"os"
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"path/filepath"
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imgui "github.com/FooSoft/imgui-go"
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"github.com/FooSoft/lazarus/formats/dat"
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"github.com/FooSoft/lazarus/formats/dc6"
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"github.com/FooSoft/lazarus/math"
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"github.com/FooSoft/lazarus/platform"
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)
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func loadPalette(path string) (*dat.Palette, error) {
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fp, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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defer fp.Close()
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return dat.NewFromReader(fp)
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}
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func loadSprite(path string) (*dc6.Sprite, error) {
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fp, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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defer fp.Close()
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return dc6.NewFromReader(fp)
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}
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type scene struct {
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sprite *dc6.Sprite
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palette *dat.Palette
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texture *platform.Texture
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directionIndex int32
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frameIndex int32
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}
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func (s *scene) Init(window *platform.Window) error {
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return nil
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}
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func (s *scene) Shutdown(window *platform.Window) error {
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if s.texture == nil {
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return nil
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}
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return s.texture.Destroy()
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}
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func (s *scene) Advance(window *platform.Window) error {
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var (
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directionIndex = s.directionIndex
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frameIndex = s.frameIndex
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)
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if s.texture == nil {
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if err := s.updateTexture(window); err != nil {
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return err
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}
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}
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imgui.Begin("DC6 Viewer")
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size := s.texture.Size()
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imgui.Image(imgui.TextureID(s.texture.Handle()), imgui.Vec2{X: float32(size.X), Y: float32(size.Y)})
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direction := s.sprite.Directions[directionIndex]
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if imgui.SliderInt("Direction", &directionIndex, 0, int32(len(s.sprite.Directions))-1) {
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frameIndex = 0
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}
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frame := direction.Frames[frameIndex]
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imgui.SliderInt("Frame", &frameIndex, 0, int32(len(direction.Frames))-1)
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imgui.Text(fmt.Sprintf("Size: %+v", frame.Size))
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imgui.Text(fmt.Sprintf("Offset: %+v", frame.Offset))
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if directionIndex != s.directionIndex || frameIndex != s.frameIndex {
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s.directionIndex = directionIndex
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s.frameIndex = frameIndex
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s.updateTexture(window)
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}
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imgui.End()
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return nil
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}
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func (s *scene) updateTexture(window *platform.Window) error {
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frame := s.sprite.Directions[s.directionIndex].Frames[s.frameIndex]
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colors := make([]math.Color3b, frame.Size.X*frame.Size.Y)
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for y := 0; y < frame.Size.Y; y++ {
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for x := 0; x < frame.Size.X; x++ {
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colors[y*frame.Size.X+x] = s.palette.Colors[frame.Data[y*frame.Size.X+x]]
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}
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}
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if s.texture != nil {
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if err := s.texture.Destroy(); err != nil {
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return err
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}
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}
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var err error
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s.texture, err = window.CreateTextureRgb(colors, frame.Size)
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if err != nil {
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return err
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}
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return nil
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}
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func main() {
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var (
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palettePath = flag.String("palette", "", "path to palette file")
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)
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flag.Usage = func() {
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fmt.Fprintf(os.Stderr, "Usage: %s [options] file\n", filepath.Base(os.Args[0]))
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fmt.Fprintf(os.Stderr, "Parameters:\n\n")
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flag.PrintDefaults()
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}
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flag.Parse()
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if flag.NArg() < 1 {
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flag.Usage()
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os.Exit(2)
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}
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sprite, err := loadSprite(flag.Arg(0))
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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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var palette *dat.Palette
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if len(*palettePath) > 0 {
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palette, err = loadPalette(*palettePath)
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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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} else {
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palette = dat.NewFromGrayscale()
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}
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platform.Init()
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defer platform.Shutdown()
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scene := &scene{sprite: sprite, palette: palette}
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window, err := platform.CreateWindow("Viewer", 1280, 720, scene)
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if err != nil {
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log.Fatal(err)
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}
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defer window.Destroy()
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if err := platform.ProcessEvents(); err != nil {
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log.Fatal(err)
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}
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}
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