initial commit, with support for basic lake generation.

settings.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+)
+
+type Settings struct {
+	Detail    float64 `json:"detail"`
+	Roughness float64 `json:"roughness"`
+	Width     int     `json:"width"`
+	Height    int     `json:"height"`
+	Lakes     int     `json:"lakes"`
+	LakeSize  float64 `json:"lake_size"`
+}
+
+func (s *Settings) Save() error {
+	configDir, err := os.UserConfigDir()
+	if err != nil {
+		return err
+	}
+
+	appConfigDir := filepath.Join(configDir, "rpgcitymakerreborn")
+	if err := os.MkdirAll(appConfigDir, 0755); err != nil {
+		return err
+	}
+
+	configFile := filepath.Join(appConfigDir, "settings.json")
+	file, err := os.Create(configFile)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	encoder := json.NewEncoder(file)
+	return encoder.Encode(s)
+}
+
+func LoadSettings() (*Settings, error) {
+	configDir, err := os.UserConfigDir()
+	if err != nil {
+		return nil, err
+	}
+
+	configFile := filepath.Join(configDir, "rpgcitymakerreborn", "settings.json")
+	file, err := os.Open(configFile)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return &Settings{Detail: 1, Roughness: 0, Width: 300, Height: 300, Lakes: 0, LakeSize: 1}, nil
+		}
+		return nil, err
+	}
+	defer file.Close()
+
+	var settings Settings
+	decoder := json.NewDecoder(file)
+	if err := decoder.Decode(&settings); err != nil {
+		return nil, err
+	}
+	return &settings, nil
+}