Doodad Tool: Levelpacks
Adds `doodad levelpack create` and `doodad levelpack show` commands to the CLI tool to create levelpacks. A levelpack is a ZIP file containing a descriptive index.json and directories for levels and doodads.
This commit is contained in:
parent
ddf0074099
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342
cmd/doodad/commands/levelpack.go
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342
cmd/doodad/commands/levelpack.go
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@ -0,0 +1,342 @@
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package commands
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import (
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"archive/zip"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"sort"
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"strings"
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"time"
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"git.kirsle.net/apps/doodle/pkg/doodads"
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"git.kirsle.net/apps/doodle/pkg/level"
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"git.kirsle.net/apps/doodle/pkg/levelpack"
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"git.kirsle.net/apps/doodle/pkg/log"
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"git.kirsle.net/apps/doodle/pkg/userdir"
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"github.com/urfave/cli/v2"
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)
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// LevelPack creation and management.
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var LevelPack *cli.Command
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func init() {
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LevelPack = &cli.Command{
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Name: "levelpack",
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Usage: "create and manage .levelpack archives",
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ArgsUsage: "-o output.levelpack <list of .level files>",
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Subcommands: []*cli.Command{
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{
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Name: "create",
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Usage: "create a new .levelpack file from source files",
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ArgsUsage: "<output.levelpack> <input.level> [input.level...]",
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Flags: []cli.Flag{
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&cli.StringFlag{
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Name: "title",
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Aliases: []string{"t"},
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Usage: "set a title for your levelpack, default will use the first level's title",
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},
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&cli.StringFlag{
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Name: "author",
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Aliases: []string{"a"},
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Usage: "set an author for your levelpack, default will use the first level's author",
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},
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&cli.StringFlag{
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Name: "description",
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Aliases: []string{"d"},
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Usage: "set a description for your levelpack",
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},
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&cli.IntFlag{
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Name: "free",
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Aliases: []string{"f"},
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Usage: "set number of free levels (levels unlocked by default), 0 means all unlocked",
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},
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&cli.StringFlag{
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Name: "doodads",
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Aliases: []string{"D"},
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Usage: "which doodads to embed: none, custom, all",
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Value: "all",
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},
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},
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Action: levelpackCreate,
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},
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{
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Name: "show",
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Usage: "print details about a levelpack file",
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ArgsUsage: "<input.levelpack>",
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Action: levelpackShow,
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},
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},
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Flags: []cli.Flag{},
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}
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}
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// Subcommand `levelpack show`
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func levelpackShow(c *cli.Context) error {
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if c.NArg() < 1 {
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return cli.Exit(
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"Usage: doodad levelpack show <file.levelpack>",
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1,
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)
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}
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var filename = c.Args().Slice()[0]
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if !strings.HasSuffix(filename, ".levelpack") {
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return cli.Exit("file must name a .levelpack", 1)
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}
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lp, err := levelpack.LoadFile(filename)
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if err != nil {
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return cli.Exit(err, 1)
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}
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fmt.Printf("===== Levelpack: %s =====\n", filename)
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fmt.Println("Headers:")
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fmt.Printf(" Title: %s\n", lp.Title)
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fmt.Printf(" Author: %s\n", lp.Author)
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fmt.Printf(" Description: %s\n", lp.Description)
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fmt.Printf(" Free levels: %d\n", lp.FreeLevels)
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// List the levels.
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fmt.Println("\nLevels:")
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for i, lvl := range lp.Levels {
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fmt.Printf("%d. %s: %s\n", i+1, lvl.Filename, lvl.Title)
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}
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// List the doodads.
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dl := lp.ListFiles("doodads/")
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if len(dl) > 0 {
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fmt.Println("\nDoodads:")
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for i, doodad := range dl {
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fmt.Printf("%d. %s\n", i, doodad)
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}
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}
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return nil
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}
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// Subcommand `levelpack create`
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func levelpackCreate(c *cli.Context) error {
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if c.NArg() < 2 {
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return cli.Exit(
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"Usage: doodad levelpack create <out.levelpack> <in.level ...>",
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1,
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)
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}
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var (
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args = c.Args().Slice()
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outfile = args[0]
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infiles = args[1:]
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title = c.String("title")
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author = c.String("author")
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description = c.String("description")
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free = c.Int("free")
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embedDoodads = c.String("doodads")
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)
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// Validate params.
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if !strings.HasSuffix(outfile, ".levelpack") {
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return cli.Exit("Output file must have a .levelpack extension", 1)
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}
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if embedDoodads != "none" && embedDoodads != "custom" && embedDoodads != "all" {
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return cli.Exit(
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"--doodads: must be one of all, custom, none",
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1,
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)
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}
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var lp = levelpack.LevelPack{
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Title: title,
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Author: author,
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Description: description,
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FreeLevels: free,
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Created: time.Now().UTC(),
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}
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// Create a temp directory to work with.
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workdir, err := os.MkdirTemp(userdir.CacheDirectory, "levelpack-*")
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if err != nil {
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return cli.Exit(
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fmt.Sprintf("Couldn't make temp folder: %s", err),
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1,
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)
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}
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log.Info("Working directory: %s", workdir)
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defer os.RemoveAll(workdir)
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// Useful folders inside the working directory.
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var (
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levelDir = filepath.Join(workdir, "levels")
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doodadDir = filepath.Join(workdir, "doodads")
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assets = []string{
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"index.json",
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}
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)
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os.MkdirAll(levelDir, 0755)
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os.MkdirAll(doodadDir, 0755)
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// Get the list of the game's builtin doodads.
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builtins, err := doodads.ListBuiltin()
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if err != nil {
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return cli.Exit(err, 1)
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}
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// Read the input levels.
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for i, filename := range infiles {
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if !strings.HasSuffix(filename, ".level") {
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return cli.Exit(
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fmt.Sprintf("input file at position %d (%s) was not a .level file", i, filename),
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1,
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)
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}
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lvl, err := level.LoadJSON(filename)
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if err != nil {
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return cli.Exit(
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fmt.Sprintf("%s: %s", filename, err),
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1,
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)
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}
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// Fill in defaults for --title, --author
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if lp.Title == "" {
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lp.Title = lvl.Title
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}
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if lp.Author == "" {
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lp.Author = lvl.Author
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}
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// Log the level in the index.json list.
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lp.Levels = append(lp.Levels, levelpack.Level{
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Title: lvl.Title,
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Author: lvl.Author,
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Filename: filepath.Base(filename),
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})
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// Grab all the level's doodads to embed in the zip folder.
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for _, actor := range lvl.Actors {
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// What was the user's embeds request? (--doodads)
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if embedDoodads == "none" {
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break
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} else if embedDoodads == "custom" {
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// Custom doodads only.
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if isBuiltinDoodad(builtins, actor.Filename) {
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log.Warn("Doodad %s is a built-in, skipping embed", actor.Filename)
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continue
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}
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}
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if _, err := os.Stat(filepath.Join(doodadDir, actor.Filename)); !os.IsNotExist(err) {
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continue
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}
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log.Info("New doodad: %s", actor.Filename)
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// Get this doodad from the game's built-ins or the user's
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// profile directory only. Pulling embedded doodads out of
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// the level is NOT supported.
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asset, err := doodads.LoadFile(actor.Filename)
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if err != nil {
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return cli.Exit(
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fmt.Sprintf("%s: Doodad file '%s': %s", filename, asset.Filename, err),
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1,
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)
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}
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var targetFile = filepath.Join(doodadDir, actor.Filename)
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assets = append(assets, targetFile)
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log.Debug("Write doodad: %s", targetFile)
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err = asset.WriteFile(filepath.Join(doodadDir, actor.Filename))
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if err != nil {
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return cli.Exit(
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fmt.Sprintf("Writing doodad %s: %s", actor.Filename, err),
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1,
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)
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}
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}
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// Copy the level in.
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var targetFile = filepath.Join(levelDir, filepath.Base(filename))
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assets = append(assets, targetFile)
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log.Info("Write level: %s", filename)
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err = copyFile(filename, filepath.Join(levelDir, filepath.Base(filename)))
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if err != nil {
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return cli.Exit(
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fmt.Sprintf("couldn't copy %s to %s: %s", filename, targetFile, err),
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1,
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)
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}
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}
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log.Info("Writing index.json")
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if err := lp.WriteFile(filepath.Join(workdir, "index.json")); err != nil {
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return cli.Exit(err, 1)
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}
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// Zip the levelpack directory.
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log.Info("Creating levelpack file: %s", outfile)
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zipf, err := os.Create(outfile)
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if err != nil {
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return cli.Exit(
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fmt.Sprintf("failed to create %s: %s", outfile, err),
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1,
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)
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}
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zipper := zip.NewWriter(zipf)
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defer zipper.Close()
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// Embed all the assets.
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sort.Strings(assets)
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for _, asset := range assets {
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asset = strings.TrimPrefix(asset, workdir+"/")
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log.Info("Zip: %s", asset)
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err := zipFile(zipper, asset, filepath.Join(workdir, asset))
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if err != nil {
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return cli.Exit(err, 1)
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}
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}
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log.Info("Written: %s", outfile)
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return cli.Exit("", 0)
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}
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// copyFile copies a file on disk to another location.
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func copyFile(source, target string) error {
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input, err := ioutil.ReadFile(source)
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if err != nil {
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return err
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}
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return ioutil.WriteFile(target, input, 0644)
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}
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// zipFile reads a file on disk to add to a zip file.
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// The `key` is the filepath inside the ZIP file, filename is the actual source file on disk.
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func zipFile(zf *zip.Writer, key, filename string) error {
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input, err := ioutil.ReadFile(filename)
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if err != nil {
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return err
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}
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writer, err := zf.Create(key)
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if err != nil {
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return err
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}
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_, err = writer.Write(input)
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return err
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}
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// Helper function to test whether a filename is part of the builtin doodads.
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func isBuiltinDoodad(doodads []string, filename string) bool {
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for _, cmp := range doodads {
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if cmp == filename {
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return true
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}
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}
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return false
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}
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@ -56,6 +56,7 @@ func main() {
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commands.EditLevel,
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commands.EditDoodad,
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commands.InstallScript,
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commands.LevelPack,
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}
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sort.Sort(cli.FlagsByName(app.Flags))
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112
pkg/levelpack/levelpack.go
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112
pkg/levelpack/levelpack.go
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@ -0,0 +1,112 @@
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// Package levelpack handles ZIP archives for level packs.
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package levelpack
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import (
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"archive/zip"
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"encoding/json"
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"errors"
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"io/ioutil"
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"os"
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"strings"
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"time"
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)
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// LevelPack describes the contents of a levelpack file.
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type LevelPack struct {
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Title string `json:"title`
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Description string `json:"description"`
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Author string `json:"author"`
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Created time.Time `json:"created"`
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// Cached metadata about the (displayed) levels.
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Levels []Level `json:"levels"`
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// Number of levels unlocked by default.
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// 0 = all levels unlocked
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FreeLevels int `json:"freeLevels"`
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// The loaded zip file for reading an existing levelpack.
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Zipfile *zip.Reader `json:"-"`
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}
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// Level holds metadata about the levels in the levelpack.
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type Level struct {
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Title string `json:"title"`
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Author string `json:"author"`
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Filename string `json:"filename"`
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}
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// LoadFile reads a .levelpack zip file.
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func LoadFile(filename string) (LevelPack, error) {
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stat, err := os.Stat(filename)
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if err != nil {
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return LevelPack{}, err
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}
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fh, err := os.Open(filename)
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if err != nil {
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return LevelPack{}, err
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}
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reader, err := zip.NewReader(fh, stat.Size())
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if err != nil {
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return LevelPack{}, err
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}
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lp := LevelPack{
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Zipfile: reader,
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}
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// Read the index.json.
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lp.GetJSON(&lp, "index.json")
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return lp, nil
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}
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// WriteFile saves the metadata to a .json file on disk.
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func (l LevelPack) WriteFile(filename string) error {
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out, err := json.Marshal(l)
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if err != nil {
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return err
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}
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return ioutil.WriteFile(filename, out, 0655)
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}
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// GetData returns file data from inside the loaded zipfile of a levelpack.
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func (l LevelPack) GetData(filename string) ([]byte, error) {
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if l.Zipfile == nil {
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return []byte{}, errors.New("zipfile not loaded")
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}
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file, err := l.Zipfile.Open(filename)
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if err != nil {
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return []byte{}, err
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}
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return ioutil.ReadAll(file)
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}
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// GetJSON loads a JSON file from the zipfile and marshals it into your struct.
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func (l LevelPack) GetJSON(v interface{}, filename string) error {
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data, err := l.GetData(filename)
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if err != nil {
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return err
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}
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return json.Unmarshal(data, v)
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}
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// ListFiles returns the files in the zipfile that match the prefix given.
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func (l LevelPack) ListFiles(prefix string) []string {
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var result []string
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if l.Zipfile != nil {
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for _, file := range l.Zipfile.File {
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if strings.HasPrefix(file.Name, prefix) {
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result = append(result, file.Name)
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}
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}
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}
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return result
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}
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