mirror of
https://github.com/OpenDiablo2/OpenDiablo2
synced 2024-09-28 14:16:01 -04:00
138 lines
3.1 KiB
Go
138 lines
3.1 KiB
Go
package d2core
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import (
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"fmt"
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"log"
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"path"
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"strings"
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"sync"
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"github.com/OpenDiablo2/D2Shared/d2common/d2resource"
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"github.com/OpenDiablo2/D2Shared/d2data/d2mpq"
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"github.com/OpenDiablo2/OpenDiablo2/d2corecommon"
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)
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type archiveEntry struct {
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archivePath string
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hashEntryMap d2mpq.HashEntryMap
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}
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type assetManager struct {
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fileCache *cache
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archiveCache *cache
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archiveEntries []archiveEntry
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config *d2corecommon.Configuration
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mutex sync.Mutex
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}
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func createAssetManager(config *d2corecommon.Configuration) *assetManager {
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return &assetManager{
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fileCache: createCache(1024 * 1024 * 32),
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archiveCache: createCache(1024 * 1024 * 128),
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config: config,
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}
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}
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func (am *assetManager) LoadFile(filePath string) []byte {
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data, err := am.loadFile(am.fixupFilePath(filePath))
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if err != nil {
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log.Println(err)
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}
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return data
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}
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func (am *assetManager) loadFile(filePath string) ([]byte, error) {
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if value, found := am.fileCache.retrieve(filePath); found {
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return value.([]byte), nil
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}
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archive, err := am.loadArchiveForFilePath(filePath)
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if err != nil {
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return nil, err
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}
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data, err := archive.ReadFile(filePath)
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if err != nil {
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return nil, err
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}
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if err := am.fileCache.insert(filePath, data, len(data)); err != nil {
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return nil, err
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}
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return data, nil
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}
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func (am *assetManager) loadArchiveForFilePath(filePath string) (*d2mpq.MPQ, error) {
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am.mutex.Lock()
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defer am.mutex.Unlock()
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if err := am.cacheArchiveEntries(); err != nil {
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return nil, err
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}
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for _, archiveEntry := range am.archiveEntries {
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if archiveEntry.hashEntryMap.Contains(filePath) {
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return am.loadArchive(archiveEntry.archivePath)
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}
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}
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return nil, fmt.Errorf("file not found: %s", filePath)
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}
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func (am *assetManager) loadArchive(archivePath string) (*d2mpq.MPQ, error) {
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if archive, found := am.archiveCache.retrieve(archivePath); found {
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return archive.(*d2mpq.MPQ), nil
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}
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archive, err := d2mpq.Load(archivePath)
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if err != nil {
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return nil, err
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}
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if err := am.archiveCache.insert(archivePath, archive, int(archive.Data.ArchiveSize)); err != nil {
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return nil, err
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}
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return archive, nil
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}
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func (am *assetManager) cacheArchiveEntries() error {
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if len(am.archiveEntries) == len(am.config.MpqLoadOrder) {
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return nil
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}
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am.archiveEntries = nil
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for _, archiveName := range am.config.MpqLoadOrder {
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archivePath := path.Join(am.config.MpqPath, archiveName)
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archive, err := am.loadArchive(archivePath)
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if err != nil {
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return err
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}
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am.archiveEntries = append(
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am.archiveEntries,
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archiveEntry{archivePath, archive.HashEntryMap},
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)
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}
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return nil
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}
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func (am *assetManager) fixupFilePath(filePath string) string {
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filePath = strings.ReplaceAll(filePath, "{LANG}", am.config.Language)
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if strings.ToUpper(d2resource.LanguageCode) == "CHI" {
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filePath = strings.ReplaceAll(filePath, "{LANG_FONT}", am.config.Language)
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} else {
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filePath = strings.ReplaceAll(filePath, "{LANG_FONT}", "latin")
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}
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filePath = strings.ToLower(filePath)
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filePath = strings.ReplaceAll(filePath, `/`, "\\")
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filePath = strings.TrimPrefix(filePath, "\\")
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return filePath
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}
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