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supply_converter: avoid crashes caused by wrong digiline message types (#397)

This commit is contained in:
DS 2017-10-31 18:56:10 +01:00 committed by Vanessa Ezekowitz
parent e056800cea
commit 37d49142cf
1 changed files with 6 additions and 1 deletions
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7
technic/machines/supply_converter.lua
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@ -72,6 +72,9 @@ local digiline_def = {
receptor = {action = function() end},
effector = {
action = function(pos, node, channel, msg)
if type(msg) ~= "string" then
return
end
local meta = minetest.get_meta(pos)
if channel ~= meta:get_string("channel") then
return
@ -90,7 +93,7 @@ local digiline_def = {
meta:set_int("enabled", 1)
elseif msg == "toggle" then
local onn = meta:get_int("enabled")
onn = -(onn-1) -- Mirror onn with pivot 0.5, so switch between 1 and 0.
onn = 1-onn -- Mirror onn with pivot 0.5, so switch between 1 and 0.
meta:set_int("enabled", onn)
elseif msg:sub(1, 5) == "power" then
local power = tonumber(msg:sub(7))
@ -103,6 +106,8 @@ local digiline_def = {
meta:set_int("power", power)
elseif msg:sub(1, 12) == "mesecon_mode" then
meta:set_int("mesecon_mode", tonumber(msg:sub(14)))
else
return
end
set_supply_converter_formspec(meta)
end