1 files changed, 137 insertions, 0 deletions

diff --git a/src/ChunkStay.cpp b/src/ChunkStay.cpp
new file mode 100644
index 000000000..6b1d5ee34
--- /dev/null
+++ b/src/ChunkStay.cpp
@@ -0,0 +1,137 @@
+
+// ChunkStay.cpp
+
+// Implements the cChunkStay class representing a base for classes that keep chunks loaded
+
+#include "Globals.h"
+#include "ChunkStay.h"
+#include "ChunkMap.h"
+
+
+
+
+
+cChunkStay::cChunkStay(void) :
+	m_ChunkMap(NULL)
+{
+}
+
+
+
+
+
+cChunkStay::~cChunkStay()
+{
+	Clear();
+}
+
+
+
+
+
+void cChunkStay::Clear(void)
+{
+	if (m_ChunkMap != NULL)
+	{
+		Disable();
+	}
+	m_Chunks.clear();
+}
+
+
+
+
+
+void cChunkStay::Add(int a_ChunkX, int a_ChunkZ)
+{
+	ASSERT(m_ChunkMap == NULL);
+
+	for (cChunkCoordsVector::const_iterator itr = m_Chunks.begin(); itr != m_Chunks.end(); ++itr)
+	{
+		if ((itr->m_ChunkX == a_ChunkX) && (itr->m_ChunkZ == a_ChunkZ))
+		{
+			// Already present
+			return;
+		}
+	}  // for itr - Chunks[]
+	m_Chunks.push_back(cChunkCoords(a_ChunkX, ZERO_CHUNK_Y, a_ChunkZ));
+}
+
+
+
+
+
+void cChunkStay::Remove(int a_ChunkX, int a_ChunkZ)
+{
+	ASSERT(m_ChunkMap == NULL);
+
+	for (cChunkCoordsVector::iterator itr = m_Chunks.begin(); itr != m_Chunks.end(); ++itr)
+	{
+		if ((itr->m_ChunkX == a_ChunkX) && (itr->m_ChunkZ == a_ChunkZ))
+		{
+			// Found, un-"stay"
+			m_Chunks.erase(itr);
+			return;
+		}
+	}  // for itr - m_Chunks[]
+}
+
+
+
+
+
+void cChunkStay::Enable(cChunkMap & a_ChunkMap)
+{
+	ASSERT(m_ChunkMap == NULL);
+	
+	m_OutstandingChunks = m_Chunks;
+	m_ChunkMap = &a_ChunkMap;
+	a_ChunkMap.AddChunkStay(*this);
+}
+
+
+
+
+
+void cChunkStay::Disable(void)
+{
+	ASSERT(m_ChunkMap != NULL);
+	
+	m_ChunkMap->DelChunkStay(*this);
+	m_ChunkMap = NULL;
+}
+
+
+
+
+
+bool cChunkStay::ChunkAvailable(int a_ChunkX, int a_ChunkZ)
+{
+	// Check if this is a chunk that we want:
+	bool IsMine = false;
+	for (cChunkCoordsVector::iterator itr = m_OutstandingChunks.begin(), end = m_OutstandingChunks.end(); itr != end; ++itr)
+	{
+		if ((itr->m_ChunkX == a_ChunkX) && (itr->m_ChunkZ == a_ChunkZ))
+		{
+			m_OutstandingChunks.erase(itr);
+			IsMine = true;
+			break;
+		}
+	}  // for itr - m_OutstandingChunks[]
+	if (!IsMine)
+	{
+		return false;
+	}
+	
+	// Call the appropriate callbacks:
+	OnChunkAvailable(a_ChunkX, a_ChunkZ);
+	if (m_OutstandingChunks.empty())
+	{
+		return OnAllChunksAvailable();
+	}
+	return false;
+}
+
+
+
+