package d2asset import ( "fmt" "path/filepath" "strings" "github.com/OpenDiablo2/OpenDiablo2/d2common" ) const ( animationBudget = 64 ) type animationManager struct { cache *d2common.Cache } func createAnimationManager() *animationManager { return &animationManager{d2common.CreateCache(animationBudget)} } func (am *animationManager) loadAnimation(animationPath, palettePath string, transparency int) (*Animation, error) { cachePath := fmt.Sprintf("%s;%s;%d", animationPath, palettePath, transparency) if animation, found := am.cache.Retrieve(cachePath); found { return animation.(*Animation).Clone(), nil } var animation *Animation ext := strings.ToLower(filepath.Ext(animationPath)) switch ext { case ".dc6": dc6, err := loadDC6(animationPath) if err != nil { return nil, err } palette, err := LoadPalette(palettePath) if err != nil { return nil, err } animation, err = CreateAnimationFromDC6(dc6, palette) if err != nil { return nil, err } case ".dcc": dcc, err := loadDCC(animationPath) if err != nil { return nil, err } palette, err := LoadPalette(palettePath) if err != nil { return nil, err } animation, err = CreateAnimationFromDCC(dcc, palette, transparency) if err != nil { return nil, err } default: return nil, fmt.Errorf("unknown animation format: %s", ext) } if err := am.cache.Insert(cachePath, animation.Clone(), 1); err != nil { return nil, err } return animation, nil }