1 files changed, 14 insertions, 4 deletions

diff --git a/src/Protocol/Protocol17x.cpp b/src/Protocol/Protocol17x.cpp
index 7c526d103..02c577dc8 100644
--- a/src/Protocol/Protocol17x.cpp
+++ b/src/Protocol/Protocol17x.cpp
@@ -92,7 +92,8 @@ cProtocol172::cProtocol172(cClientHandle * a_Client, const AString & a_ServerAdd
 	m_ReceivedData(32 KiB),
 	m_OutPacketBuffer(64 KiB),
 	m_OutPacketLenBuffer(20),  // 20 bytes is more than enough for one VarInt
-	m_IsEncrypted(false)
+	m_IsEncrypted(false),
+	m_LastSentDimension(dimNotSet)
 {
 	// Create the comm log file, if so requested:
 	if (g_ShouldLogCommIn || g_ShouldLogCommOut)
@@ -234,7 +235,8 @@ void cProtocol172::SendChat(const cCompositeChat & a_Message)
 	
 	// Compose the complete Json string to send:
 	Json::Value msg;
-	msg["text"] = cClientHandle::FormatMessageType(m_Client->GetPlayer()->GetWorld()->ShouldUseChatPrefixes(), a_Message.GetMessageType(), a_Message.GetAdditionalMessageTypeData());  // The client crashes without this field being present
+	cWorld * World = m_Client->GetPlayer()->GetWorld();
+	msg["text"] = cClientHandle::FormatMessageType((World == NULL) ? false : World->ShouldUseChatPrefixes(), a_Message.GetMessageType(), a_Message.GetAdditionalMessageTypeData());  // The client crashes without this field being present
 	const cCompositeChat::cParts & Parts = a_Message.GetParts();
 	for (cCompositeChat::cParts::const_iterator itr = Parts.begin(), end = Parts.end(); itr != end; ++itr)
 	{
@@ -655,6 +657,7 @@ void cProtocol172::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
 		Pkt.WriteByte(std::min(Server->GetMaxPlayers(), 60));
 		Pkt.WriteString("default");  // Level type - wtf?
 	}
+	m_LastSentDimension = a_World.GetDimension();
 	
 	// Send the spawn position:
 	{
@@ -983,14 +986,21 @@ void cProtocol172::SendRemoveEntityEffect(const cEntity & a_Entity, int a_Effect
 
 
 
-void cProtocol172::SendRespawn(void)
+void cProtocol172::SendRespawn(const cWorld & a_World)
 {
+	if (m_LastSentDimension == a_World.GetDimension())
+	{
+		// Must not send a respawn for the world with the same dimension, the client goes cuckoo if we do
+		return;
+	}
+
 	cPacketizer Pkt(*this, 0x07);  // Respawn packet
 	cPlayer * Player = m_Client->GetPlayer();
-	Pkt.WriteInt(Player->GetWorld()->GetDimension());
+	Pkt.WriteInt(a_World.GetDimension());
 	Pkt.WriteByte(2);  // TODO: Difficulty (set to Normal)
 	Pkt.WriteByte((Byte)Player->GetEffectiveGameMode());
 	Pkt.WriteString("default");
+	m_LastSentDimension = a_World.GetDimension();
 }