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Make MakeReadOnlyTable a member function of LuaHandler so that GameFlow can use it too.

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This commit is contained in:
hispidence 2021-08-07 19:00:45 +01:00
parent 339a95c6e4
commit 2d4c091b64
2 changed files with 27 additions and 26 deletions
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29
TR5Main/Scripting/GameLogicScript.cpp
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@ -245,33 +245,10 @@ Get a SinkInfo by its name.
*/
m_lua->set_function("GetSinkByName", &GameScript::GetSinkByName, this);
auto makeReadOnlyTable = [this](std::string const & tableName, auto const& container)
{
auto mt = tableName + "Meta";
// Put all the data in the metatable
m_lua->set(mt, sol::as_table(container));
// Make the metatable's __index refer to itself so that requests
// to the main table will go through to the metatable (and thus the
// container's members)
m_lua->safe_script(mt + ".__index = " + mt);
// Don't allow the table to have new elements put into it
m_lua->safe_script(mt + ".__newindex = function() error('" + tableName + " is read-only') end");
// Protect the metatable
m_lua->safe_script(mt + ".__metatable = 'metatable is protected'");
auto tab = m_lua->create_named_table(tableName);
m_lua->safe_script("setmetatable(" + tableName + ", " + mt + ")");
// point the initial metatable variable away from its contents. this is just for cleanliness
m_lua->safe_script(mt + "= nil");
};
makeReadOnlyTable("InvItem", kInventorySlots);
makeReadOnlyTable("ObjID", kObjIDs);
MakeReadOnlyTable("InvItem", kInventorySlots);
MakeReadOnlyTable("ObjID", kObjIDs);
//TODO ABSTRACT THESE OUT TOO
// LevelFuncs
std::string LevelFuncsName{ "LevelFuncs" };
std::string LevelFuncsNameMeta{ LevelFuncsName + "Meta" };