Track and update tile entities

bot/world/tile.go

@@ -0,0 +1,21 @@
+package world
+
+import (
+  "fmt"
+)
+
+// TilePosition describes the location of a tile/block entity within a chunk.
+type TilePosition uint32
+
+func (p TilePosition) Pos() (x, y, z int) {
+  return int((p>>8) & 0xff), int((p>>16) & 0xff), int(p&0xff)
+}
+
+func (p TilePosition) String() string {
+  x, y, z := p.Pos()
+  return fmt.Sprintf("(%d, %d, %d)", x, y, z)
+}
+
+func ToTilePos(x, y, z int) TilePosition {
+  return TilePosition((y&0xff) << 16 | (x&15) << 8 | (z&15))
+}