Add configdir and unify file loading/saving

* Create a configuration directory to store the user's local levels
  and doodads. On Linux this is at ~/.config/doodle
* Unify the file loading and saving functions: you can type into the
  console "edit example" and it will open `example.level` from your
  levels folder or else `example.doodad` from the doodads folder, in the
  appropriate mode.
* You can further specify the file extension: `edit example.doodad` and
  it will load it from the doodads folder only.
* Any slash characters in a file name are taken literally as a relative
  or absolute path.
* The UI Save/Load buttons now share the same code path as the console
  commands, so the `save` command always saves as a Doodad when the
  EditorScene is in Doodad Mode.

README.md

@@ -176,8 +176,8 @@ Lesser important UI features that can come at any later time:
 
 ## Doodad Editor
 
-* [ ] The Edit Mode should support creating drawings for Doodads.
+* [x] The Edit Mode should support creating drawings for Doodads.
-  * [ ] It should know whether you're drawing a Map or a Doodad as some
+  * [x] It should know whether you're drawing a Map or a Doodad as some
     behaviors may need to be different between the two.
   * [ ] Compress the coordinates down toward `(0,0)` when saving a Doodad,
     by finding the toppest, leftest point and making that `(0,0)` and adjusting

cmd/doodle/main.go

@@ -43,7 +43,7 @@ func main() {
 	app.SetupEngine()
 	if filename != "" {
 		if edit {
-			app.EditDrawing(filename)
+			app.EditFile(filename)
 		} else {
 			app.PlayLevel(filename)
 		}

commands.go

@@ -4,6 +4,8 @@ import (
 	"errors"
 	"fmt"
 	"strconv"
+
+	"git.kirsle.net/apps/doodle/enum"
 )
 
 // Command is a parsed shell command.
@@ -112,11 +114,17 @@ func (c Command) Save(d *Doodle) error {
 		} else if scene.filename != "" {
 			filename = scene.filename
 		} else {
-			return errors.New("usage: save <filename.json>")
+			return errors.New("usage: save <filename>")
 		}
 
-		d.shell.Write("Saving to file: " + filename)
+		switch scene.DrawingType {
-		scene.SaveLevel(filename)
+		case enum.LevelDrawing:
+			d.shell.Write("Saving Level: " + filename)
+			scene.SaveLevel(filename)
+		case enum.DoodadDrawing:
+			d.shell.Write("Saving Doodad: " + filename)
+			scene.SaveDoodad(filename)
+		}
 	} else {
 		return errors.New("save: only available in Edit Mode")
 	}
@@ -131,8 +139,8 @@ func (c Command) Edit(d *Doodle) error {
 	}
 
 	filename := c.Args[0]
-	d.shell.Write("Editing level: " + filename)
+	d.shell.Write("Editing file: " + filename)
-	d.EditDrawing(filename)
+	d.EditFile(filename)
 	return nil
 }
 

config.go

@@ -1,6 +1,15 @@
 package doodle
 
-import "git.kirsle.net/apps/doodle/render"
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+
+	"git.kirsle.net/apps/doodle/render"
+	"github.com/kirsle/configdir"
+)
 
 // Configuration constants.
 var (
@@ -10,3 +19,128 @@ var (
 	DebugTextStroke        = render.Grey
 	DebugTextShadow        = render.Black
 )
+
+// Profile Directory settings.
+var (
+	ConfigDirectoryName = "doodle"
+	ProfileDirectory    string
+	LevelDirectory      string
+	DoodadDirectory     string
+
+	// Regexp to match simple filenames for maps and doodads.
+	reSimpleFilename = regexp.MustCompile(`^([A-Za-z0-9-_.,+ '"\[\](){}]+)$`)
+)
+
+// File extensions
+const (
+	extLevel  = ".level"
+	extDoodad = ".doodad"
+)
+
+func init() {
+	ProfileDirectory = configdir.LocalConfig(ConfigDirectoryName)
+	LevelDirectory = configdir.LocalConfig(ConfigDirectoryName, "levels")
+	DoodadDirectory = configdir.LocalConfig(ConfigDirectoryName, "doodads")
+	configdir.MakePath(LevelDirectory, DoodadDirectory)
+}
+
+// LevelPath will turn a "simple" filename into an absolute path in the user's
+// local levels folder. If the filename already contains slashes, it is returned
+// as-is as an absolute or relative path.
+func LevelPath(filename string) string {
+	return resolvePath(LevelDirectory, filename, extLevel)
+}
+
+// DoodadPath is like LevelPath but for Doodad files.
+func DoodadPath(filename string) string {
+	return resolvePath(DoodadDirectory, filename, extDoodad)
+}
+
+// resolvePath is the inner logic for LevelPath and DoodadPath.
+func resolvePath(directory, filename, extension string) string {
+	if strings.Contains(filename, "/") {
+		return filename
+	}
+
+	// Attach the file extension?
+	if strings.ToLower(filepath.Ext(filename)) != extension {
+		filename += extension
+	}
+
+	return filepath.Join(directory, filename)
+}
+
+/*
+EditFile opens a drawing file (Level or Doodad) in the EditorScene.
+
+The filename can be one of the following:
+
+	- A simple filename with no path separators in it and/or no file extension.
+	- An absolute path beginning with "/"
+	- A relative path beginning with "./"
+
+If the filename has an extension (`.level` or `.doodad`), that will disambiguate
+how to find the file and which mode to start the EditorMode in. Otherwise, the
+"levels" folder is checked first and the "doodads" folder second.
+*/
+func (d *Doodle) EditFile(filename string) error {
+	var absPath string
+
+	// Is it a simple filename?
+	if m := reSimpleFilename.FindStringSubmatch(filename); len(m) > 0 {
+		log.Debug("EditFile: simple filename %s", filename)
+		extension := strings.ToLower(filepath.Ext(filename))
+		if foundFilename := d.ResolvePath(filename, extension, false); foundFilename != "" {
+			log.Info("EditFile: resolved name '%s' to path %s", filename, foundFilename)
+			absPath = foundFilename
+		} else {
+			return fmt.Errorf("EditFile: %s: no level or doodad found", filename)
+		}
+	} else {
+		log.Debug("Not a simple: %s %+v", filename, reSimpleFilename)
+		if _, err := os.Stat(filename); !os.IsNotExist(err) {
+			log.Debug("EditFile: verified path %s exists", filename)
+			absPath = filename
+		}
+	}
+
+	d.EditDrawing(absPath)
+
+	return nil
+}
+
+// ResolvePath takes an ambiguous simple filename and searches for a Level or
+// Doodad that matches. Returns a blank string if no files found.
+//
+// Pass a true value for `one` if you are intending to create the file. It will
+// only test one filepath and return the first one, regardless if the file
+// existed. So the filename should have a ".level" or ".doodad" extension and
+// then this path will resolve the ProfileDirectory of the file.
+func (d *Doodle) ResolvePath(filename, extension string, one bool) string {
+	// If the filename exists outright, return it.
+	if _, err := os.Stat(filename); !os.IsNotExist(err) {
+		return filename
+	}
+
+	var paths []string
+	if extension == extLevel {
+		paths = append(paths, filepath.Join(LevelDirectory, filename))
+	} else if extension == extDoodad {
+		paths = append(paths, filepath.Join(DoodadDirectory, filename))
+	} else {
+		paths = append(paths,
+			filepath.Join(LevelDirectory, filename+".level"),
+			filepath.Join(DoodadDirectory, filename+".doodad"),
+		)
+	}
+
+	for _, test := range paths {
+		log.Debug("findFilename: try to find '%s' as %s", filename, test)
+		if _, err := os.Stat(test); os.IsNotExist(err) {
+			continue
+		}
+		return test
+	}
+
+	return ""
+}

editor_scene.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
+	"strings"
 
 	"git.kirsle.net/apps/doodle/balance"
 	"git.kirsle.net/apps/doodle/doodads"
@@ -167,6 +168,10 @@ func (s *EditorScene) SaveLevel(filename string) error {
 		return errors.New("SaveLevel: current drawing is not a Level type")
 	}
 
+	if !strings.HasSuffix(filename, extLevel) {
+		filename += extLevel
+	}
+
 	s.filename = filename
 
 	m := s.Level
@@ -185,6 +190,9 @@ func (s *EditorScene) SaveLevel(filename string) error {
 		return fmt.Errorf("SaveLevel error: %s", err)
 	}
 
+	// Save it to their profile directory.
+	filename = LevelPath(filename)
+	log.Info("Write Level: %s", filename)
 	err = ioutil.WriteFile(filename, json, 0644)
 	if err != nil {
 		return fmt.Errorf("Create map file error: %s", err)
@@ -215,6 +223,10 @@ func (s *EditorScene) SaveDoodad(filename string) error {
 		return errors.New("SaveDoodad: current drawing is not a Doodad type")
 	}
 
+	if !strings.HasSuffix(filename, extDoodad) {
+		filename += extDoodad
+	}
+
 	s.filename = filename
 	d := s.Doodad
 	if d.Title == "" {
@@ -228,7 +240,10 @@ func (s *EditorScene) SaveDoodad(filename string) error {
 	d.Palette = s.drawing.Palette
 	d.Layers[0].Chunker = s.drawing.Chunker()
 
-	err := d.WriteJSON(s.filename)
+	// Save it to their profile directory.
+	filename = DoodadPath(filename)
+	log.Info("Write Doodad: %s", filename)
+	err := d.WriteJSON(filename)
 	return err
 }