Initial commit

net/packets/bedrock/full_chunk_data.go

@@ -0,0 +1,97 @@
+package bedrock
+
+import (
+	"bytes"
+
+	"github.com/cubexteam/Frodding/net/info"
+	"github.com/cubexteam/Frodding/net/packets"
+)
+
+type FullChunkDataPacket struct {
+	*packets.Packet
+	ChunkX int32
+	ChunkZ int32
+	Data   []byte
+}
+
+func NewFullChunkDataPacket(cx, cz int32, data []byte) *FullChunkDataPacket {
+	return &FullChunkDataPacket{
+		Packet: packets.NewPacket(info.IDFullChunkData),
+		ChunkX: cx,
+		ChunkZ: cz,
+		Data:   data,
+	}
+}
+
+func BuildFlatChunk() []byte {
+	buf := &bytes.Buffer{}
+
+	const numSubChunks = 8
+	buf.WriteByte(numSubChunks)
+
+	for sc := 0; sc < numSubChunks; sc++ {
+		buf.WriteByte(0)
+
+		blocks := make([]byte, 4096)
+		baseY := sc * 16
+
+		for x := 0; x < 16; x++ {
+			for z := 0; z < 16; z++ {
+				for y := 0; y < 16; y++ {
+					absY := baseY + y
+					idx := x*256 + z*16 + y
+					if absY == 0 {
+						blocks[idx] = 7
+					} else if absY < 62 {
+						blocks[idx] = 1
+					} else if absY == 62 {
+						blocks[idx] = 3
+					} else if absY == 63 {
+						blocks[idx] = 2
+					}
+				}
+			}
+		}
+		buf.Write(blocks)
+
+		buf.Write(make([]byte, 2048))
+
+		skylight := make([]byte, 2048)
+		for i := range skylight {
+			if baseY >= 64 {
+				skylight[i] = 0xFF
+			} else {
+				skylight[i] = 0x00
+			}
+		}
+		buf.Write(skylight)
+
+		buf.Write(make([]byte, 2048))
+	}
+
+	heightmap := make([]byte, 256)
+	for i := range heightmap {
+		heightmap[i] = 64
+	}
+	buf.Write(heightmap)
+
+	biomes := make([]byte, 256)
+	for i := range biomes {
+		biomes[i] = 1
+	}
+	buf.Write(biomes)
+
+	buf.WriteByte(0)
+	buf.WriteByte(0)
+
+	return buf.Bytes()
+}
+
+func (pk *FullChunkDataPacket) Encode() {
+	pk.PutVarInt(pk.ChunkX)
+	pk.PutVarInt(pk.ChunkZ)
+	pk.PutUVarInt(uint32(len(pk.Data)))
+	pk.PutBytes(pk.Data)
+}
+
+func (pk *FullChunkDataPacket) Decode() {}