func (chunk *Chunk) reqUnsubscribeChunk(entityId EntityId, sendPacket bool) {
if player, ok := chunk.subscribers[entityId]; ok {
chunk.subscribers[entityId] = nil, false
// Call any observers registered with AddOnUnsubscribe.
if observers, ok := chunk.onUnsub[entityId]; ok {
chunk.onUnsub[entityId] = nil, false
for _, observer := range observers {
observer.Unsubscribed(entityId)
}
}
if sendPacket {
buf := new(bytes.Buffer)
proto.WritePreChunk(buf, &chunk.loc, ChunkUnload)
// TODO send PacketEntityDestroy packets for spawns in this chunk.
player.TransmitPacket(buf.Bytes())
}
}
}
func (chunk *Chunk) reqSubscribeChunk(entityId EntityId, player gamerules.IPlayerClient, notify bool) {
if _, ok := chunk.subscribers[entityId]; ok {
// Already subscribed.
return
}
chunk.subscribers[entityId] = player
buf := new(bytes.Buffer)
proto.WritePreChunk(buf, &chunk.loc, ChunkInit)
player.TransmitPacket(buf.Bytes())
player.TransmitPacket(chunk.chunkPacket())
if notify {
player.NotifyChunkLoad()
}
// Send spawns packets for all entities in the chunk.
if len(chunk.entities) > 0 {
buf := new(bytes.Buffer)
for _, e := range chunk.entities {
e.SendSpawn(buf)
}
player.TransmitPacket(buf.Bytes())
}
// Spawn existing players for new player.
if len(chunk.playersData) > 0 {
playersPacket := new(bytes.Buffer)
for _, existing := range chunk.playersData {
if existing.entityId != entityId {
existing.sendSpawn(playersPacket)
}
}
player.TransmitPacket(playersPacket.Bytes())
}
}