falloutBot/go-mc
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change API of Section from (x, y, z int) to (offset int)

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Tnze
2020-05-21 17:28:42 +08:00
parent 2db43755f1
commit 2ae88b10f4
3 changed files with 27 additions and 28 deletions
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15
bot/world/world.go
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@ -17,8 +17,17 @@ type Chunk struct {
// Section store a 16*16*16 cube blocks
type Section interface {
GetBlock(x, y, z int) BlockStatus
SetBlock(x, y, z int, s BlockStatus)
// GetBlock return block status, offset can be calculate by SectionOffset.
GetBlock(offset int) BlockStatus
// SetBlock is the reverse operation of GetBlock.
SetBlock(offset int, s BlockStatus)
}
func SectionOffset(x, y, z int) (offset int) {
// According to wiki.vg: Data Array is given for each block with increasing x coordinates,
// within rows of increasing z coordinates, within layers of increasing y coordinates.
// So offset equals to ( x*16^0 + z*16^1 + y*16^2 )*(bits per block).
return x + z*16 + y*16*16
}
type BlockStatus uint32
@ -52,7 +61,7 @@ func (w *World) GetBlockStatus(x, y, z int) BlockStatus {
if c != nil {
// (n&(16-1)) == (n<0 ? n%16+16 : n%16)
if sec := c.Sections[y>>4]; sec != nil {
return sec.GetBlock(x&15, y&15, z&15)
return sec.GetBlock(SectionOffset(x&15, y&15, z&15))
}
}
return 0