fix dimension registry handling

bot/basic/info.go

@@ -9,7 +9,7 @@ import (
 
 // WorldInfo content player info in server.
 type WorldInfo struct {
-	DimensionType       string
+	DimensionType       int32
 	DimensionNames      []string // Identifiers for all worlds on the server.
 	DimensionName       string   // Name of the world being spawned into.
 	HashedSeed          int64    // First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
@@ -41,7 +41,7 @@ func (p *Player) handleLoginPacket(packet pk.Packet) error {
 		(*pk.Boolean)(&p.ReducedDebugInfo),
 		(*pk.Boolean)(&p.EnableRespawnScreen),
 		(*pk.Boolean)(&p.DoLimitCrafting),
-		(*pk.Identifier)(&p.WorldInfo.DimensionType),
+		(*pk.VarInt)(&p.WorldInfo.DimensionType),
 		(*pk.Identifier)(&p.DimensionName),
 		(*pk.Long)(&p.HashedSeed),
 		(*pk.UnsignedByte)(&p.Gamemode),
@@ -84,7 +84,7 @@ func (p *Player) handleLoginPacket(packet pk.Packet) error {
 func (p *Player) handleRespawnPacket(packet pk.Packet) error {
 	var copyMeta bool
 	err := packet.Scan(
-		(*pk.String)(&p.DimensionType),
+		(*pk.VarInt)(&p.DimensionType),
 		(*pk.Identifier)(&p.DimensionName),
 		(*pk.Long)(&p.HashedSeed),
 		(*pk.UnsignedByte)(&p.Gamemode),

bot/world/chunks.go

@@ -1,7 +1,7 @@
 package world
 
 import (
-	"errors"
+	"fmt"
 
 	"github.com/Tnze/go-mc/bot"
 	"github.com/Tnze/go-mc/bot/basic"
@@ -41,9 +41,9 @@ func (w *World) onPlayerSpawn(pk.Packet) error {
 
 func (w *World) handleLevelChunkWithLightPacket(packet pk.Packet) error {
 	var pos level.ChunkPos
-	_, currentDimType := w.c.Registries.DimensionType.Find(w.p.DimensionType)
+	currentDimType := w.c.Registries.DimensionType.FindByID(w.p.DimensionType)
 	if currentDimType == nil {
-		return errors.New("dimension type " + w.p.DimensionType + " not found")
+		return fmt.Errorf("dimension type %d not found", w.p.DimensionType)
 	}
 	chunk := level.EmptyChunk(int(currentDimType.Height) / 16)
 	if err := packet.Scan(&pos, chunk); err != nil {