118 lines
3.3 KiB
Go
118 lines
3.3 KiB
Go
package biome
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import (
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"errors"
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"hash/maphash"
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"math/bits"
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)
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type Type int
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var hashSeed = maphash.MakeSeed()
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func (t Type) MarshalText() (text []byte, err error) {
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if t >= 0 && int(t) < len(biomesNames) {
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return biomesNames[t], nil
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}
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return nil, errors.New("invalid type")
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}
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func (t *Type) UnmarshalText(text []byte) error {
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var ok bool
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*t, ok = biomesIDs[maphash.Bytes(hashSeed, text)]
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if ok {
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return nil
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}
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return errors.New("invalid type")
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}
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// String returns the biome id. Debugging purposes only.
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func (t Type) String() string {
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if t >= 0 && int(t) < len(biomesNames) {
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return string(biomesNames[t])
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}
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return "<invalid biome type>"
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}
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var (
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// BitsPerBiome reports how many bits are required to represent all possible biomes.
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BitsPerBiome int
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biomesIDs map[uint64]Type
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biomesNames = [][]byte{
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[]byte("minecraft:frozen_ocean"),
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[]byte("minecraft:savanna_plateau"),
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[]byte("minecraft:taiga"),
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[]byte("minecraft:savanna"),
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[]byte("minecraft:dripstone_caves"),
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[]byte("minecraft:swamp"),
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[]byte("minecraft:basalt_deltas"),
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[]byte("minecraft:ice_spikes"),
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[]byte("minecraft:cherry_grove"),
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[]byte("minecraft:crimson_forest"),
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[]byte("minecraft:frozen_peaks"),
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[]byte("minecraft:dark_forest"),
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[]byte("minecraft:lush_caves"),
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[]byte("minecraft:old_growth_spruce_taiga"),
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[]byte("minecraft:deep_dark"),
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[]byte("minecraft:frozen_river"),
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[]byte("minecraft:lukewarm_ocean"),
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[]byte("minecraft:mushroom_fields"),
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[]byte("minecraft:warm_ocean"),
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[]byte("minecraft:forest"),
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[]byte("minecraft:end_midlands"),
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[]byte("minecraft:windswept_forest"),
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[]byte("minecraft:deep_ocean"),
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[]byte("minecraft:sunflower_plains"),
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[]byte("minecraft:stony_peaks"),
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[]byte("minecraft:stony_shore"),
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[]byte("minecraft:nether_wastes"),
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[]byte("minecraft:deep_lukewarm_ocean"),
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[]byte("minecraft:flower_forest"),
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[]byte("minecraft:old_growth_birch_forest"),
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[]byte("minecraft:desert"),
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[]byte("minecraft:snowy_taiga"),
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[]byte("minecraft:beach"),
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[]byte("minecraft:grove"),
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[]byte("minecraft:deep_frozen_ocean"),
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[]byte("minecraft:river"),
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[]byte("minecraft:old_growth_pine_taiga"),
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[]byte("minecraft:the_void"),
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[]byte("minecraft:deep_cold_ocean"),
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[]byte("minecraft:windswept_gravelly_hills"),
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[]byte("minecraft:snowy_plains"),
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[]byte("minecraft:end_highlands"),
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[]byte("minecraft:jagged_peaks"),
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[]byte("minecraft:eroded_badlands"),
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[]byte("minecraft:bamboo_jungle"),
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[]byte("minecraft:end_barrens"),
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[]byte("minecraft:plains"),
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[]byte("minecraft:small_end_islands"),
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[]byte("minecraft:meadow"),
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[]byte("minecraft:the_end"),
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[]byte("minecraft:snowy_beach"),
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[]byte("minecraft:sparse_jungle"),
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[]byte("minecraft:jungle"),
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[]byte("minecraft:snowy_slopes"),
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[]byte("minecraft:birch_forest"),
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[]byte("minecraft:mangrove_swamp"),
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[]byte("minecraft:ocean"),
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[]byte("minecraft:cold_ocean"),
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[]byte("minecraft:soul_sand_valley"),
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[]byte("minecraft:warped_forest"),
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[]byte("minecraft:badlands"),
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[]byte("minecraft:pale_garden"),
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[]byte("minecraft:windswept_hills"),
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[]byte("minecraft:windswept_savanna"),
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[]byte("minecraft:wooded_badlands"),
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}
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)
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func init() {
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BitsPerBiome = bits.Len(uint(len(biomesNames)))
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biomesIDs = make(map[uint64]Type, len(biomesNames))
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for i, v := range biomesNames {
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h := maphash.Bytes(hashSeed, v)
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biomesIDs[h] = Type(i)
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}
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}
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