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simple conversion between save.Chunk and level.Chunk

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This commit is contained in:
Tnze
2021-12-20 15:32:44 +08:00
parent 5bc8513039
commit 5acd7f73c5
7 changed files with 376 additions and 189 deletions
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93
level/palette.go
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@ -12,7 +12,7 @@ type state = int
type PaletteContainer struct {
bits int
config func(bits int) palette
config paletteCfg
palette palette
data *BitStorage
}
@ -20,34 +20,63 @@ type PaletteContainer struct {
func NewStatesPaletteContainer(length int, defaultValue state) *PaletteContainer {
return &PaletteContainer{
bits: 0,
config: createStatesPalette,
config: statesCfg{},
palette: &singleValuePalette{v: defaultValue},
data: NewBitStorage(0, length, nil),
}
}
func NewStatesPaletteContainerWithData(length int, data []uint64, palette []int) *PaletteContainer {
n := bits.Len(uint(len(palette)))
return &PaletteContainer{
bits: n,
config: createStatesPalette,
palette: &linearPalette{
values: palette,
func NewStatesPaletteContainerWithData(length int, data []uint64, pat []int) *PaletteContainer {
var p palette
var n int
if len(pat) == 1 {
p = &singleValuePalette{pat[0]}
n = 0
} else {
n = statesCfg{}.bits(bits.Len(uint(len(pat))))
p = &linearPalette{
values: pat,
bits: n,
},
data: NewBitStorage(n, length, data),
}
}
return &PaletteContainer{
bits: n,
config: statesCfg{},
palette: p,
data: NewBitStorage(n, length, data),
}
}
func NewBiomesPaletteContainer(length int, defaultValue state) *PaletteContainer {
return &PaletteContainer{
bits: 0,
config: createBiomesPalette,
config: biomesCfg{},
palette: &singleValuePalette{v: defaultValue},
data: NewBitStorage(0, length, nil),
}
}
func NewBiomesPaletteContainerWithData(length int, data []uint64, pat []int) *PaletteContainer {
var p palette
var n int
if len(pat) == 1 {
p = &singleValuePalette{pat[0]}
n = 0
} else {
n = biomesCfg{}.bits(bits.Len(uint(len(pat))))
p = &linearPalette{
values: pat,
bits: n,
}
}
return &PaletteContainer{
bits: n,
config: biomesCfg{},
palette: p,
data: NewBitStorage(n, length, data),
}
}
func (p *PaletteContainer) Get(i int) state {
return p.palette.value(p.data.Get(i))
}
@ -61,7 +90,7 @@ func (p *PaletteContainer) Set(i int, v state) {
newPalette := PaletteContainer{
bits: vv,
config: p.config,
palette: p.config(vv),
palette: p.config.create(vv),
data: NewBitStorage(vv, oldLen+1, nil),
}
// copy
@ -89,7 +118,7 @@ func (p *PaletteContainer) ReadFrom(r io.Reader) (n int64, err error) {
if err != nil {
return
}
p.palette = p.config(int(bits))
p.palette = p.config.create(int(bits))
nn, err := p.palette.ReadFrom(r)
n += nn
@ -105,7 +134,27 @@ func (p *PaletteContainer) ReadFrom(r io.Reader) (n int64, err error) {
return n, nil
}
func createStatesPalette(bits int) palette {
type paletteCfg interface {
bits(int) int
create(bits int) palette
}
type statesCfg struct{}
func (s statesCfg) bits(bits int) int {
switch bits {
case 0:
return 0
case 1, 2, 3, 4:
return 4
case 5, 6, 7, 8:
return bits
default:
return bits
}
}
func (s statesCfg) create(bits int) palette {
switch bits {
case 0:
return &singleValuePalette{v: -1}
@ -119,7 +168,19 @@ func createStatesPalette(bits int) palette {
}
}
func createBiomesPalette(bits int) palette {
type biomesCfg struct{}
func (b biomesCfg) bits(bits int) int {
switch bits {
case 0:
return 0
case 1, 2, 3:
return bits
default:
return bits
}
}
func (b biomesCfg) create(bits int) palette {
switch bits {
case 0:
return &singleValuePalette{v: -1}