forked from danaugrs/gokoban
/
userdata.go
74 lines (65 loc) · 1.78 KB
/
userdata.go
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// Copyright 2017 Daniel Salvadori. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"encoding/gob"
"os"
)
// The filepath of the file used to store the UserData instance via Gob
const USER_DATA_FILEPATH string = "user.data"
// UserData stores all the information that persists between game sessions
type UserData struct {
MusicOn bool
SfxOn bool
MusicVol float32
SfxVol float32
FullScreen bool
LastLevel int
LastUnlockedLevel int
}
// NewUserData loads user data from file or creates a new object with default values if no file exists
func NewUserData() *UserData {
ud := new(UserData)
// Try to read existing file
file, err := os.Open(USER_DATA_FILEPATH)
if err == nil {
decoder := gob.NewDecoder(file)
err = decoder.Decode(ud)
if err != nil {
log.Debug("Error decoding user.data: %v", err)
}
} else {
log.Debug("Error opening user.data file: %v", err)
}
file.Close()
if err != nil {
ud.SfxOn = true
ud.MusicOn = true
ud.SfxVol = 0.5
ud.MusicVol = 0.5
ud.FullScreen = false
ud.LastLevel = 0
ud.LastUnlockedLevel = 0
log.Debug("Creating new user data with default values: %+v", ud)
} else {
log.Debug("Loaded user data: %+v", ud)
}
return ud
}
// Save saves the current user data to the user data file, overwriting existing (old) data
func (ud *UserData) Save() error {
log.Debug("Saving user data: %+v", ud)
newFile, err := os.Create(USER_DATA_FILEPATH)
if err == nil {
encoder := gob.NewEncoder(newFile)
err = encoder.Encode(&ud)
if err != nil {
log.Debug("Error encoding user.data: %v", err)
}
} else {
log.Debug("Error creating user.data file: %v", err)
}
newFile.Close()
return err
}