Noah Petherbridge
8603c43c58
* Levels and Doodad files will be written in gzip-compressed JSON format * `boolProp compress-drawings false` to disable compression and save as classic JSON format directly * The game can still read uncompressed JSON files The file size savings on some built-in assets: * Tutorial 2.level: 2.2M -> 414K (82% smaller) * warp-door-orange.doodad: 105K -> 17K (84% smaller)
87 lines
2.0 KiB
Go
87 lines
2.0 KiB
Go
package doodads
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"path/filepath"
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"git.kirsle.net/apps/doodle/pkg/balance"
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"git.kirsle.net/apps/doodle/pkg/log"
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"git.kirsle.net/apps/doodle/pkg/usercfg"
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)
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// ToJSON serializes the doodad as JSON (gzip supported).
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//
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// If balance.CompressLevels=true the doodad will be gzip compressed
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// and the return value is gz bytes and not the raw JSON.
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func (d *Doodad) ToJSON() ([]byte, error) {
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// Gzip compressing?
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if balance.CompressDrawings {
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return d.ToGzip()
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}
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out := bytes.NewBuffer([]byte{})
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encoder := json.NewEncoder(out)
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if usercfg.Current.JSONIndent {
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encoder.SetIndent("", "\t")
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}
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err := encoder.Encode(d)
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return out.Bytes(), err
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}
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// FromJSON loads a doodad from JSON string (gzip supported).
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func FromJSON(filename string, data []byte) (*Doodad, error) {
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var doodad = &Doodad{}
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// Inspect the headers of the file to see how it was encoded.
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if len(data) > 0 && data[0] == '{' {
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// Looks standard JSON.
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err := json.Unmarshal(data, doodad)
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if err != nil {
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return nil, err
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}
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} else if len(data) > 1 && data[0] == 0x1f && data[1] == 0x8b {
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// Gzip compressed. `1F8B` is gzip magic number.
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log.Debug("Decompress doodad %s", filename)
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if gzd, err := FromGzip(data); err != nil {
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return nil, err
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} else {
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doodad = gzd
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}
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}
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// Inflate the chunk metadata to map the pixels to their palette indexes.
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doodad.Filename = filepath.Base(filename)
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doodad.Inflate()
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return doodad, nil
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}
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// WriteJSON writes a Doodad to JSON on disk.
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func (d *Doodad) WriteJSON(filename string) error {
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json, err := d.ToJSON()
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if err != nil {
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return fmt.Errorf("Doodad.WriteJSON: JSON encode error: %s", err)
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}
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err = ioutil.WriteFile(filename, json, 0755)
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if err != nil {
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return fmt.Errorf("Doodad.WriteJSON: WriteFile error: %s", err)
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}
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d.Filename = filepath.Base(filename)
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return nil
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}
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// LoadJSON loads a map from JSON file.
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func LoadJSON(filename string) (*Doodad, error) {
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data, err := ioutil.ReadFile(filename)
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if err != nil {
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return nil, err
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}
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return FromJSON(filename, data)
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}
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