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+Lua Automation - Passive Component API
+
+Passive components are nodes that do not have code running in them. However, active components can query these and request actions from them. Examples:
+Switches
+Signals
+Displays
+Mesecon Transmitter
+
+All passive components have a table called 'luaautomation' in their node definition and have the group 'save_in_nodedb' set, so they work in unloaded chunks.
+Example for a switch:
+luaautomation = {
+ getstate = function(pos, node)
+ return "st"
+ end,
+ -- OR
+ getstate = "st",
+
+ setstate = function(pos, node, newstate)
+ if newstate=="cr" then
+ advtrains.ndb.swap_node(pos, <corresponding switch alt>)
+ end
+ end
+} \ No newline at end of file