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authorworktycho <work.tycho@gmail.com>2013-12-09 18:51:12 +0100
committerworktycho <work.tycho@gmail.com>2013-12-09 18:51:12 +0100
commit843605d59ebc128be0a578dc6f45ef8c05da6e79 (patch)
tree3ffebc6ba27baf7a9e1d4bc51501ffeea9b14226 /src/ChunkSender.cpp
parentmerged makefile changes (diff)
parentFix Undefined behavior at Bindings/LuaWindow line 32 (diff)
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Diffstat (limited to 'src/ChunkSender.cpp')
-rw-r--r--src/ChunkSender.cpp295
1 files changed, 295 insertions, 0 deletions
diff --git a/src/ChunkSender.cpp b/src/ChunkSender.cpp
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+++ b/src/ChunkSender.cpp
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+
+// ChunkSender.cpp
+
+// Interfaces to the cChunkSender class representing the thread that waits for chunks becoming ready (loaded / generated) and sends them to clients
+
+
+
+
+
+#include "Globals.h"
+#include "ChunkSender.h"
+#include "World.h"
+#include "BlockEntities/BlockEntity.h"
+#include "Protocol/ChunkDataSerializer.h"
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cNotifyChunkSender:
+
+void cNotifyChunkSender::Call(int a_ChunkX, int a_ChunkZ)
+{
+ m_ChunkSender->ChunkReady(a_ChunkX, a_ChunkZ);
+}
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cChunkSender:
+
+cChunkSender::cChunkSender(void) :
+ super("ChunkSender"),
+ m_World(NULL),
+ m_Notify(NULL),
+ m_RemoveCount(0)
+{
+ m_Notify.SetChunkSender(this);
+}
+
+
+
+
+
+cChunkSender::~cChunkSender()
+{
+ Stop();
+}
+
+
+
+
+
+bool cChunkSender::Start(cWorld * a_World)
+{
+ m_ShouldTerminate = false;
+ m_World = a_World;
+ return super::Start();
+}
+
+
+
+
+
+void cChunkSender::Stop(void)
+{
+ m_ShouldTerminate = true;
+ m_evtQueue.Set();
+ Wait();
+}
+
+
+
+
+
+void cChunkSender::ChunkReady(int a_ChunkX, int a_ChunkZ)
+{
+ // This is probably never gonna be called twice for the same chunk, and if it is, we don't mind, so we don't check
+ {
+ cCSLock Lock(m_CS);
+ m_ChunksReady.push_back(cChunkCoords(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ));
+ }
+ m_evtQueue.Set();
+}
+
+
+
+
+
+void cChunkSender::QueueSendChunkTo(int a_ChunkX, int a_ChunkZ, cClientHandle * a_Client)
+{
+ ASSERT(a_Client != NULL);
+ {
+ cCSLock Lock(m_CS);
+ if (std::find(m_SendChunks.begin(), m_SendChunks.end(), sSendChunk(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ, a_Client)) != m_SendChunks.end())
+ {
+ // Already queued, bail out
+ return;
+ }
+ m_SendChunks.push_back(sSendChunk(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ, a_Client));
+ }
+ m_evtQueue.Set();
+}
+
+
+
+
+
+void cChunkSender::RemoveClient(cClientHandle * a_Client)
+{
+ {
+ cCSLock Lock(m_CS);
+ for (sSendChunkList::iterator itr = m_SendChunks.begin(); itr != m_SendChunks.end();)
+ {
+ if (itr->m_Client == a_Client)
+ {
+ itr = m_SendChunks.erase(itr);
+ continue;
+ }
+ ++itr;
+ } // for itr - m_SendChunks[]
+ m_RemoveCount++;
+ }
+ m_evtQueue.Set();
+ m_evtRemoved.Wait(); // Wait for removal confirmation
+}
+
+
+
+
+
+void cChunkSender::Execute(void)
+{
+ while (!m_ShouldTerminate)
+ {
+ cCSLock Lock(m_CS);
+ while (m_ChunksReady.empty() && m_SendChunks.empty())
+ {
+ int RemoveCount = m_RemoveCount;
+ m_RemoveCount = 0;
+ cCSUnlock Unlock(Lock);
+ for (int i = 0; i < RemoveCount; i++)
+ {
+ m_evtRemoved.Set(); // Notify that the removed clients are safe to be deleted
+ }
+ m_evtQueue.Wait();
+ if (m_ShouldTerminate)
+ {
+ return;
+ }
+ } // while (empty)
+
+ if (!m_ChunksReady.empty())
+ {
+ // Take one from the queue:
+ cChunkCoords Coords(m_ChunksReady.front());
+ m_ChunksReady.pop_front();
+ Lock.Unlock();
+
+ SendChunk(Coords.m_ChunkX, Coords.m_ChunkY, Coords.m_ChunkZ, NULL);
+ }
+ else
+ {
+ // Take one from the queue:
+ sSendChunk Chunk(m_SendChunks.front());
+ m_SendChunks.pop_front();
+ Lock.Unlock();
+
+ SendChunk(Chunk.m_ChunkX, Chunk.m_ChunkY, Chunk.m_ChunkZ, Chunk.m_Client);
+ }
+ Lock.Lock();
+ int RemoveCount = m_RemoveCount;
+ m_RemoveCount = 0;
+ Lock.Unlock();
+ for (int i = 0; i < RemoveCount; i++)
+ {
+ m_evtRemoved.Set(); // Notify that the removed clients are safe to be deleted
+ }
+ } // while (!mShouldTerminate)
+}
+
+
+
+
+
+void cChunkSender::SendChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ, cClientHandle * a_Client)
+{
+ ASSERT(m_World != NULL);
+
+ // Ask the client if it still wants the chunk:
+ if (a_Client != NULL)
+ {
+ if (!a_Client->WantsSendChunk(a_ChunkX, a_ChunkY, a_ChunkZ))
+ {
+ return;
+ }
+ }
+
+ // If the chunk has no clients, no need to packetize it:
+ if (!m_World->HasChunkAnyClients(a_ChunkX, a_ChunkZ))
+ {
+ return;
+ }
+
+ // If the chunk is not valid, do nothing - whoever needs it has queued it for loading / generating
+ if (!m_World->IsChunkValid(a_ChunkX, a_ChunkZ))
+ {
+ return;
+ }
+
+ // If the chunk is not lighted, queue it for relighting and get notified when it's ready:
+ if (!m_World->IsChunkLighted(a_ChunkX, a_ChunkZ))
+ {
+ m_World->QueueLightChunk(a_ChunkX, a_ChunkZ, &m_Notify);
+ return;
+ }
+
+ // Query and prepare chunk data:
+ if (!m_World->GetChunkData(a_ChunkX, a_ChunkZ, *this))
+ {
+ return;
+ }
+ cChunkDataSerializer Data(m_BlockTypes, m_BlockMetas, m_BlockLight, m_BlockSkyLight, m_BiomeMap);
+
+ // Send:
+ if (a_Client == NULL)
+ {
+ m_World->BroadcastChunkData(a_ChunkX, a_ChunkZ, Data);
+ }
+ else
+ {
+ a_Client->SendChunkData(a_ChunkX, a_ChunkZ, Data);
+ }
+
+ // Send block-entity packets:
+ for (sBlockCoords::iterator itr = m_BlockEntities.begin(); itr != m_BlockEntities.end(); ++itr)
+ {
+ if (a_Client == NULL)
+ {
+ m_World->BroadcastBlockEntity(itr->m_BlockX, itr->m_BlockY, itr->m_BlockZ);
+ }
+ else
+ {
+ m_World->SendBlockEntity(itr->m_BlockX, itr->m_BlockY, itr->m_BlockZ, *a_Client);
+ }
+ } // for itr - m_Packets[]
+ m_BlockEntities.clear();
+
+ // TODO: Send entity spawn packets
+}
+
+
+
+
+
+void cChunkSender::BlockEntity(cBlockEntity * a_Entity)
+{
+ m_BlockEntities.push_back(sBlockCoord(a_Entity->GetPosX(), a_Entity->GetPosY(), a_Entity->GetPosZ()));
+}
+
+
+
+
+void cChunkSender::Entity(cEntity * a_Entity)
+{
+ // Nothing needed yet, perhaps in the future when we save entities into chunks we'd like to send them upon load, too ;)
+}
+
+
+
+
+
+void cChunkSender::BiomeData(const cChunkDef::BiomeMap * a_BiomeMap)
+{
+ for (int i = 0; i < ARRAYCOUNT(m_BiomeMap); i++)
+ {
+ if ((*a_BiomeMap)[i] < 255)
+ {
+ // Normal MC biome, copy as-is:
+ m_BiomeMap[i] = (unsigned char)((*a_BiomeMap)[i]);
+ }
+ else
+ {
+ // TODO: MCS-specific biome, need to map to some basic MC biome:
+ ASSERT(!"Unimplemented MCS-specific biome");
+ }
+ } // for i - m_BiomeMap[]
+}
+
+
+
+