1 files changed, 41 insertions, 7 deletions

diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp
index 897ee9e9e..ec1bebe8d 100644
--- a/src/ClientHandle.cpp
+++ b/src/ClientHandle.cpp
@@ -248,9 +248,12 @@ AString cClientHandle::GenerateOfflineUUID(const AString & a_Username)
 	// xxxxxxxx-xxxx-3xxx-yxxx-xxxxxxxxxxxx where x is any hexadecimal digit and y is one of 8, 9, A, or B
 	// Note that we generate a short UUID (without the dashes)
 	
+	// First make the username lowercase:
+	AString lcUsername = StrToLower(a_Username);
+
 	// Generate an md5 checksum, and use it as base for the ID:
 	unsigned char MD5[16];
-	md5((const unsigned char *)a_Username.c_str(), a_Username.length(), MD5);
+	md5((const unsigned char *)lcUsername.c_str(), lcUsername.length(), MD5);
 	MD5[6] &= 0x0f;  // Need to trim to 4 bits only...
 	MD5[8] &= 0x0f;  // ... otherwise %01x overflows into two chars
 	return Printf("%02x%02x%02x%02x%02x%02x3%01x%02x8%01x%02x%02x%02x%02x%02x%02x%02x",
@@ -639,9 +642,11 @@ void cClientHandle::RemoveFromAllChunks()
 	}
 	
 	{
+		// Reset all chunk lists:
 		cCSLock Lock(m_CSChunkLists);
 		m_LoadedChunks.clear();
 		m_ChunksToSend.clear();
+		m_SentChunks.clear();
 
 		// Also reset the LastStreamedChunk coords to bogus coords,
 		// so that all chunks are streamed in subsequent StreamChunks() call (FS #407)
@@ -695,7 +700,7 @@ bool cClientHandle::HandleLogin(int a_ProtocolVersion, const AString & a_Usernam
 	m_Username = a_Username;
 
 	// Let the plugins know about this event, they may refuse the player:
-	if (cRoot::Get()->GetPluginManager()->CallHookLogin(this, a_ProtocolVersion, a_Username))
+	if (cRoot::Get()->GetPluginManager()->CallHookLogin(*this, a_ProtocolVersion, a_Username))
 	{
 		Destroy();
 		return false;
@@ -1814,7 +1819,7 @@ void cClientHandle::HandleKeepAlive(int a_KeepAliveID)
 
 bool cClientHandle::HandleHandshake(const AString & a_Username)
 {
-	if (!cRoot::Get()->GetPluginManager()->CallHookHandshake(this, a_Username))
+	if (!cRoot::Get()->GetPluginManager()->CallHookHandshake(*this, a_Username))
 	{
 		if (cRoot::Get()->GetServer()->GetNumPlayers() >= cRoot::Get()->GetServer()->GetMaxPlayers())
 		{
@@ -2147,7 +2152,17 @@ void cClientHandle::SendBlockBreakAnim(int a_EntityID, int a_BlockX, int a_Block
 
 void cClientHandle::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
 {
-	m_Protocol->SendBlockChange(a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta);
+	int ChunkX, ChunkZ = 0;
+	cChunkDef::BlockToChunk(a_BlockX, a_BlockZ, ChunkX, ChunkZ);
+	cChunkCoords ChunkCoords = cChunkCoords(ChunkX, ChunkZ);
+
+	// Do not send block changes in chunks that weren't sent to the client yet:
+	cCSLock Lock(m_CSChunkLists);
+	if (std::find(m_SentChunks.begin(), m_SentChunks.end(), ChunkCoords) != m_SentChunks.end())
+	{
+		Lock.Unlock();
+		m_Protocol->SendBlockChange(a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta);
+	}
 }
 
 
@@ -2157,8 +2172,15 @@ void cClientHandle::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BL
 void cClientHandle::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes)
 {
 	ASSERT(!a_Changes.empty());  // We don't want to be sending empty change packets!
-	
-	m_Protocol->SendBlockChanges(a_ChunkX, a_ChunkZ, a_Changes);
+
+	// Do not send block changes in chunks that weren't sent to the client yet:
+	cChunkCoords ChunkCoords = cChunkCoords(a_ChunkX, a_ChunkZ);
+	cCSLock Lock(m_CSChunkLists);
+	if (std::find(m_SentChunks.begin(), m_SentChunks.end(), ChunkCoords) != m_SentChunks.end())
+	{
+		Lock.Unlock();
+		m_Protocol->SendBlockChanges(a_ChunkX, a_ChunkZ, a_Changes);
+	}
 }
 
 
@@ -2222,6 +2244,12 @@ void cClientHandle::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializ
 	
 	m_Protocol->SendChunkData(a_ChunkX, a_ChunkZ, a_Serializer);
 
+	// Add the chunk to the list of chunks sent to the player:
+	{
+		cCSLock Lock(m_CSChunkLists);
+		m_SentChunks.push_back(cChunkCoords(a_ChunkX, a_ChunkZ));
+	}
+
 	// If it is the chunk the player's in, make them spawn (in the tick thread):
 	if ((m_State == csAuthenticated) || (m_State == csDownloadingWorld))
 	{
@@ -2751,6 +2779,12 @@ void cClientHandle::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay, bool a_D
 
 void cClientHandle::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
 {
+	// Remove the chunk from the list of chunks sent to the client:
+	{
+		cCSLock Lock(m_CSChunkLists);
+		m_SentChunks.remove(cChunkCoords(a_ChunkX, a_ChunkZ));
+	}
+
 	m_Protocol->SendUnloadChunk(a_ChunkX, a_ChunkZ);
 }
 
@@ -2825,7 +2859,7 @@ void cClientHandle::SendWindowOpen(const cWindow & a_Window)
 
 
 
-void cClientHandle::SendWindowProperty(const cWindow & a_Window, int a_Property, int a_Value)
+void cClientHandle::SendWindowProperty(const cWindow & a_Window, short a_Property, short a_Value)
 {
 	m_Protocol->SendWindowProperty(a_Window, a_Property, a_Value);
 }