updates for 1.21.100 support

legacyver/proto/biome.go

@@ -0,0 +1,92 @@
+package proto
+
+import (
+	"unsafe"
+	_ "unsafe"
+
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+)
+
+// BiomeDefinition represents a biome definition in the game. This can be a vanilla biome or a completely
+// custom biome.
+type BiomeDefinition struct {
+	// NameIndex represents the index of the biome name in the string list.
+	NameIndex int16
+	// BiomeID is the biome ID.
+	BiomeID int16
+	// Temperature is the temperature of the biome, used for weather, biome behaviours and sky colour.
+	Temperature float32
+	// Downfall is the amount that precipitation affects colours and block changes.
+	Downfall float32
+	// RedSporeDensity is the density of red spore precipitation visuals.
+	RedSporeDensity float32
+	// BlueSporeDensity is the density of blue spore precipitation visuals.
+	BlueSporeDensity float32
+	// AshDensity is the density of ash precipitation visuals.
+	AshDensity float32
+	// WhiteAshDensity is the density of white ash precipitation visuals.
+	WhiteAshDensity float32
+	// Depth ...
+	Depth float32
+	// Scale ...
+	Scale float32
+	// MapWaterColour is an ARGB value for the water colour on maps in the biome.
+	MapWaterColour int32
+	// Rain is true if the biome has rain, false if it is a dry biome.
+	Rain bool
+	// Tags are a list of indices of tags in the string list. These are used to group biomes together for
+	// biome generation and other purposes.
+	Tags protocol.Optional[[]uint16]
+	// ChunkGeneration is optional information to assist in client-side chunk generation. Almost all servers
+	// can and should leave this empty to greatly reduce the size of this packet. Only BDS and servers which
+	// *exactly* match the vanilla chunk generation can benefit from this.
+	ChunkGeneration protocol.Optional[protocol.BiomeChunkGeneration]
+}
+
+// TODO: This will be required to be changed when the structs are modified in future MC updates.
+func DowngradeBiomeDefinitions(bd []protocol.BiomeDefinition) []BiomeDefinition {
+	converted := make([]BiomeDefinition, len(bd))
+	for i, b := range bd {
+		ptr := unsafe.Pointer(&b)
+		converted[i] = *(*BiomeDefinition)(ptr)
+	}
+	return converted
+}
+
+// TODO: This will be required to be changed when the structs are modified in future MC updates.
+func UpgradeBiomeDefinitions(bd []BiomeDefinition) []protocol.BiomeDefinition {
+	converted := make([]protocol.BiomeDefinition, len(bd))
+	for i, b := range bd {
+		ptr := unsafe.Pointer(&b)
+		converted[i] = *(*protocol.BiomeDefinition)(ptr)
+	}
+	return converted
+}
+
+func (x *BiomeDefinition) Marshal(r protocol.IO) {
+	r.Int16(&x.NameIndex)
+	if IsProtoGTE(r, ID827) {
+		r.Int16(&x.BiomeID)
+	} else {
+		var opt protocol.Optional[int16]
+		if x.BiomeID != -1 {
+			opt = protocol.Option(x.BiomeID)
+		}
+		protocol.OptionalFunc(r, &opt, r.Int16)
+		x.BiomeID, _ = opt.Value()
+	}
+	r.Float32(&x.Temperature)
+	r.Float32(&x.Downfall)
+	r.Float32(&x.RedSporeDensity)
+	r.Float32(&x.BlueSporeDensity)
+	r.Float32(&x.AshDensity)
+	r.Float32(&x.WhiteAshDensity)
+	r.Float32(&x.Depth)
+	r.Float32(&x.Scale)
+	r.Int32(&x.MapWaterColour)
+	r.Bool(&x.Rain)
+	protocol.OptionalFunc(r, &x.Tags, func(s *[]uint16) {
+		protocol.FuncSlice(r, s, r.Uint16)
+	})
+	protocol.OptionalMarshaler(r, &x.ChunkGeneration)
+}

legacyver/proto/id.go

@@ -3,6 +3,7 @@ package proto
 import "github.com/sandertv/gophertunnel/minecraft/protocol"
 
 const (
+	ID827 = 827 // v1.21.100
 	ID819 = 819 // v1.21.93
 	ID818 = 818 // v1.21.90
 	ID800 = 800 // v1.21.80