package level import ( "bytes" "encoding/json" "fmt" "io/ioutil" "os" "git.kirsle.net/apps/doodle/pkg/balance" ) // FromJSON loads a level from JSON string. func FromJSON(filename string, data []byte) (*Level, error) { var m = New() err := json.Unmarshal(data, m) // Fill in defaults. if m.Wallpaper == "" { m.Wallpaper = DefaultWallpaper } // Inflate the chunk metadata to map the pixels to their palette indexes. m.Chunker.Inflate(m.Palette) m.Actors.Inflate() // Inflate the private instance values. m.Palette.Inflate() return m, err } // ToJSON serializes the level as JSON. func (m *Level) ToJSON() ([]byte, error) { out := bytes.NewBuffer([]byte{}) encoder := json.NewEncoder(out) if balance.JSONIndent { encoder.SetIndent("", "\t") } err := encoder.Encode(m) return out.Bytes(), err } // LoadJSON loads a map from JSON file. func LoadJSON(filename string) (*Level, error) { fh, err := os.Open(filename) if err != nil { return nil, err } defer fh.Close() // Decode the JSON file from disk. m := New() decoder := json.NewDecoder(fh) err = decoder.Decode(&m) if err != nil { return m, fmt.Errorf("level.LoadJSON: JSON decode error: %s", err) } // Fill in defaults. if m.Wallpaper == "" { m.Wallpaper = DefaultWallpaper } // Inflate the chunk metadata to map the pixels to their palette indexes. m.Chunker.Inflate(m.Palette) m.Actors.Inflate() // Inflate the private instance values. m.Palette.Inflate() return m, err } // WriteJSON writes a level to JSON on disk. func (m *Level) WriteJSON(filename string) error { json, err := m.ToJSON() if err != nil { return fmt.Errorf("Level.WriteJSON: JSON encode error: %s", err) } err = ioutil.WriteFile(filename, json, 0755) if err != nil { return fmt.Errorf("Level.WriteJSON: WriteFile error: %s", err) } return nil }