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OpenDiablo2/d2core/d2asset/palette_manager.go

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package d2asset
import (
"github.com/OpenDiablo2/OpenDiablo2/d2common"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2fileformats/d2dat"
)
type paletteManager struct {
cache *d2common.Cache
}
const (
paletteBudget = 64
)
func createPaletteManager() *paletteManager {
return &paletteManager{d2common.CreateCache(paletteBudget)}
}
func (pm *paletteManager) loadPalette(palettePath string) (*d2dat.DATPalette, error) {
if palette, found := pm.cache.Retrieve(palettePath); found {
return palette.(*d2dat.DATPalette), nil
}
paletteData, err := LoadFile(palettePath)
if err != nil {
return nil, err
}
palette, err := d2dat.LoadDAT(paletteData)
if err != nil {
return nil, err
}
pm.cache.Insert(palettePath, palette, 1)
return palette, nil
}