changed license

- changed license to unlicense
- fixed old data structure reference

Author: 0ptera

Interface_Demo/control.lua

@@ -1,14 +1,43 @@
+--[[
+  LTN API demo
+  Copyright (c) 2019 Optera
+
+  For complete listing of events and properties refer to https://forums.factorio.com/viewtopic.php?f=214&t=51072#p397844
+
+
+  This is free and unencumbered software released into the public domain.
+
+  Anyone is free to copy, modify, publish, use, compile, sell, or
+  distribute this software, either in source code form or as a compiled
+  binary, for any purpose, commercial or non-commercial, and by any
+  means.
+
+  In jurisdictions that recognize copyright laws, the author or authors
+  of this software dedicate any and all copyright interest in the
+  software to the public domain. We make this dedication for the benefit
+  of the public at large and to the detriment of our heirs and
+  successors. We intend this dedication to be an overt act of
+  relinquishment in perpetuity of all present and future rights to this
+  software under copyright law.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+  OTHER DEALINGS IN THE SOFTWARE.
+
+  For more information, please refer to <http://unlicense.org/>
+--]]
+
 -- LTN interface event functions
 function OnStopsUpdated(event)
-  if event.data then
-    log("Stop Data:"..serpent.block(event) )
-  end
+  log("Stop Data:"..serpent.block(event) )
 end
 
 function OnDispatcherUpdated(event)
-  if event.data then
-    log("Dispatcher Data:"..serpent.block(event) )
-  end
+  log("Dispatcher Data:"..serpent.block(event) )
 end
 
 ---- Initialisation  ----
@@ -25,7 +54,7 @@ script.on_load(function(data)
   if remote.interfaces["logistic-train-network"] then
     script.on_event(remote.call("logistic-train-network", "on_stops_updated"), OnStopsUpdated)
     script.on_event(remote.call("logistic-train-network", "on_dispatcher_updated"), OnDispatcherUpdated)
-    --[[ alternative anonymous function: 
+    --[[ alternative anonymous function:
          has to be copied between on_init and on_load
          script.on_event(remote.call("logistic-train-network", "on_stops_updated"), function(event)
            do something with event.data