1 files changed, 73 insertions, 0 deletions

diff --git a/src/Bindings/LuaChunkStay.h b/src/Bindings/LuaChunkStay.h
new file mode 100644
index 000000000..49ab9a0ad
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+++ b/src/Bindings/LuaChunkStay.h
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+
+// LuaChunkStay.h
+
+// Declares the cLuaChunkStay class representing a cChunkStay binding for plugins, used by cWorld:ChunkStay() Lua API
+
+
+
+
+
+#pragma once
+
+#include "LuaState.h"
+#include "../ChunkStay.h"
+
+
+
+
+
+// fwd:
+class cPluginLua;
+
+
+
+
+
+class cLuaChunkStay
+	: public cChunkStay
+{
+	typedef cChunkStay super;
+	
+public:
+	cLuaChunkStay(cPluginLua & a_Plugin);
+	
+	~cLuaChunkStay() { }
+
+	/** Adds chunks in the specified on-stack Lua table.
+	Returns true if any chunk added, false (plus log warning) if none. */
+	bool AddChunks(int a_ChunkCoordTableStackPos);
+	
+	/** Enables the ChunkStay for the specified chunkmap, with the specified Lua callbacks. */
+	void Enable(cChunkMap & a_ChunkMap, int a_OnChunkAvailableStackPos, int a_OnAllChunksAvailableStackPos);
+	
+protected:
+	/** The plugin which has created the ChunkStay, via cWorld:ChunkStay() binding method.  */
+	cPluginLua & m_Plugin;
+	
+	/** The Lua state associated with the callbacks. Only valid when enabled. */
+	cLuaState * m_LuaState;
+	
+	/** The Lua function to call in OnChunkAvailable. Only valid when enabled. */
+	cLuaState::cRef m_OnChunkAvailable;
+	
+	/** The Lua function to call in OnAllChunksAvailable. Only valid when enabled. */
+	cLuaState::cRef m_OnAllChunksAvailable;
+	
+	
+	// cChunkStay overrides:
+	virtual void OnChunkAvailable(int a_ChunkX, int a_ChunkZ) override;
+	virtual bool OnAllChunksAvailable(void) override;
+	virtual void OnDisabled(void) override;
+	
+	/** Adds a single chunk coord from the table at the top of the Lua stack.
+	Expects the top element to be a table, checks that it contains two numbers.
+	Uses those two numbers as chunk coords appended to m_Chunks.
+	If the coords are already present, gives a warning and ignores the pair.
+	The a_Index parameter is only for the error messages. */
+	void AddChunkCoord(cLuaState & a_LuaState, int a_Index);
+} ;
+
+
+
+
+