117 lines
2.7 KiB
Go
117 lines
2.7 KiB
Go
package world
|
|
|
|
import (
|
|
"github.com/Tnze/go-mc/bot/world/entity"
|
|
"github.com/Tnze/go-mc/data/block"
|
|
pk "github.com/Tnze/go-mc/net/packet"
|
|
)
|
|
|
|
// World record all of the things in the world where player at
|
|
type World struct {
|
|
Entities map[int32]entity.Entity
|
|
Chunks map[ChunkLoc]*Chunk
|
|
}
|
|
|
|
// Chunk store a 256*16*16 column blocks
|
|
type Chunk struct {
|
|
Sections [16]Section
|
|
}
|
|
|
|
// Section store a 16*16*16 cube blocks
|
|
type Section interface {
|
|
// GetBlock return block status, offset can be calculate by SectionOffset.
|
|
GetBlock(offset uint) BlockStatus
|
|
// SetBlock is the reverse operation of GetBlock.
|
|
SetBlock(offset uint, s BlockStatus)
|
|
}
|
|
|
|
func SectionIdx(x, y, z int) uint {
|
|
// 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 uint(((y & 15) << 8) | (z << 4) | x)
|
|
}
|
|
|
|
type BlockStatus uint32
|
|
|
|
type ChunkLoc struct {
|
|
X, Z int
|
|
}
|
|
|
|
// //Entity 表示一个实体
|
|
// type Entity interface {
|
|
// EntityID() int32
|
|
// }
|
|
|
|
// //Face is a face of a block
|
|
// type Face byte
|
|
|
|
// // All six faces in a block
|
|
// const (
|
|
// Bottom Face = iota
|
|
// Top
|
|
// North
|
|
// South
|
|
// West
|
|
// East
|
|
// )
|
|
|
|
// getBlock return the block in the position (x, y, z)
|
|
func (w *World) GetBlockStatus(x, y, z int) BlockStatus {
|
|
// Use n>>4 rather then n/16. It acts wrong if n<0.
|
|
c := w.Chunks[ChunkLoc{x >> 4, z >> 4}]
|
|
if c != nil && y >= 0 {
|
|
if sec := c.Sections[y>>4]; sec != nil {
|
|
return sec.GetBlock(SectionIdx(x&15, y&15, z&15))
|
|
}
|
|
}
|
|
return 0
|
|
}
|
|
|
|
func (w *World) UnaryBlockUpdate(pos pk.Position, bStateID BlockStatus) bool {
|
|
c := w.Chunks[ChunkLoc{X: pos.X >> 4, Z: pos.Z >> 4}]
|
|
if c == nil {
|
|
return false
|
|
}
|
|
sIdx, bIdx := pos.Y>>4, SectionIdx(pos.X&15, pos.Y&15, pos.Z&15)
|
|
|
|
if sec := c.Sections[sIdx]; sec == nil {
|
|
sec = newSectionWithSize(uint(block.BitsPerBlock))
|
|
sec.SetBlock(bIdx, bStateID)
|
|
c.Sections[sIdx] = sec
|
|
} else {
|
|
sec.SetBlock(bIdx, bStateID)
|
|
}
|
|
return true
|
|
}
|
|
|
|
func (w *World) MultiBlockUpdate(loc ChunkLoc, sectionY int, blocks []pk.VarLong) bool {
|
|
c := w.Chunks[loc]
|
|
if c == nil {
|
|
return false // not loaded
|
|
}
|
|
|
|
sec := c.Sections[sectionY]
|
|
if sec == nil {
|
|
sec = newSectionWithSize(uint(block.BitsPerBlock))
|
|
c.Sections[sectionY] = sec
|
|
}
|
|
|
|
for _, b := range blocks {
|
|
bStateID := b >> 12
|
|
x, z, y := (b>>8)&0xf, (b>>4)&0xf, b&0xf
|
|
sec.SetBlock(SectionIdx(int(x&15), int(y&15), int(z&15)), BlockStatus(bStateID))
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// func (b Block) String() string {
|
|
// return blockNameByID[b.id]
|
|
// }
|
|
|
|
//LoadChunk load chunk at (x, z)
|
|
func (w *World) LoadChunk(x, z int, c *Chunk) {
|
|
w.Chunks[ChunkLoc{X: x, Z: z}] = c
|
|
}
|