1 files changed, 49 insertions, 0 deletions

diff --git a/src/SpawnPrepare.h b/src/SpawnPrepare.h
new file mode 100644
index 000000000..cc0da504e
--- /dev/null
+++ b/src/SpawnPrepare.h
@@ -0,0 +1,49 @@
+
+#pragma once
+
+class cWorld;
+	
+
+
+/** Generates and lights the spawn area of the world. Runs as a separate thread. */
+class cSpawnPrepare
+{
+
+public:
+	static void PrepareChunks(cWorld & a_World, int a_SpawnChunkX, int a_SpawnChunkZ, int a_PrepareDistance);
+
+protected:
+	cWorld & m_World;
+	int m_SpawnChunkX;
+	int m_SpawnChunkZ;
+	int m_PrepareDistance;
+
+	/** The index of the next chunk to be queued in the lighting thread. */
+	int m_NextIdx;
+
+	/** The maximum index of the prepared chunks. Queueing stops when m_NextIdx reaches this number. */
+	int m_MaxIdx;
+
+	/** Total number of chunks already finished preparing. Preparation finishes when this number reaches m_MaxIdx. */
+	int m_NumPrepared;
+
+	/** Event used to signal that the preparation is finished. */
+	cEvent m_EvtFinished;
+
+	/** The timestamp of the last progress report emitted. */
+	std::chrono::steady_clock::time_point m_LastReportTime;
+
+	/** Number of chunks prepared when the last progress report was emitted. */
+	int m_LastReportChunkCount;
+
+	cSpawnPrepare(cWorld & a_World, int a_SpawnChunkX, int a_SpawnChunkZ, int a_PrepareDistance, int a_FirstIdx);
+
+	void PreparedChunkCallback(int a_ChunkX, int a_ChunkZ);
+
+	/** Decodes the index into chunk coords. Provides the specific chunk ordering. */
+	void DecodeChunkCoords(int a_Idx, int & a_ChunkX, int & a_ChunkZ);
+
+	friend class cSpawnPrepareCallback;
+
+};
+