Allow Luacontroller programs to request the use of lightweight interrupts
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@ -271,8 +271,9 @@ local get_interrupt
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if mesecon.setting("luacontroller_lightweight_interrupts", false) then
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-- use node timer
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get_interrupt = function(pos, itbl, send_warning)
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return (function(time, iid)
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return (function(time, iid, lightweight)
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if type(time) ~= "number" then error("Delay must be a number") end
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if lightweight == false then error("Non-lightweight interrupts are disabled on this server") end
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if iid ~= nil then send_warning("Interrupt IDs are disabled on this server") end
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table.insert(itbl, function() minetest.get_node_timer(pos):start(time) end)
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end)
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@ -282,10 +283,14 @@ else
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-- itbl: Flat table of functions to run after sandbox cleanup, used to prevent various security hazards
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get_interrupt = function(pos, itbl, send_warning)
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-- iid = interrupt id
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local function interrupt(time, iid)
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local function interrupt(time, iid, lightweight)
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-- NOTE: This runs within string metatable sandbox, so don't *rely* on anything of the form (""):y
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-- Hence the values get moved out. Should take less time than original, so totally compatible
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if type(time) ~= "number" then error("Delay must be a number") end
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if lightweight then
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if iid ~= nil then send_warning("Interrupt IDs cannot be used with lightweight interrupts") end
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table.insert(itbl, function() minetest.get_node_timer(pos):start(time) end)
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else
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table.insert(itbl, function ()
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-- Outside string metatable sandbox, can safely run this now
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local luac_id = minetest.get_meta(pos):get_int("luac_id")
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@ -301,6 +306,7 @@ else
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end
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end)
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end
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end
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return interrupt
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end
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end
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