Hat ein Fahrzeug einen Motor?

[EricD]

  Hello Members
  
  Please can someone help me with the following.
  I am trying to build a table containing all the Locomotives
  in the layout. I cannot find the Lua code corresponding to
  "the vehicle has an engine" in the following:  
  
  function GetAllLocos()
      local tt = {}
      g = layout:enumVehicles(
      function ( vehicle )
         if "the vehicle has an engine" then
           table.insert(tt,vehicle)
         end
      end
      )
      return tt
  end
  
  I have searched the forum for quite a long time before making
  this request. I hope some kind person will tell me the solution.
  
  Thank you
  
  Eric
  
  ----------------------------------------
  Google translation:
  Bitte kann mir jemand bei folgendem helfen.
  Ich versuche eine Tabelle mit allen Lokomotiven zu erstellen
  im Layout. Ich kann den entsprechenden Lua-Code nicht finden
  "Das Fahrzeug hat einen Motor" im Folgenden:
             <Lua function>
  Ich habe das Forum ziemlich lange durchsucht, bevor ich es gemacht habe
  diese Anfrage. Ich hoffe, eine freundliche Person wird mir die Lösung sagen.
  
  Vielen Dank

  Eric
 

[HaNNoveraNer]

layout:enumVehicles(
function(vehicle)
   print(vehicle:hasEngine())
end )

[HaNNoveraNer]

function GetAllLocos()
      local tt = {}
      layout:enumVehicles(
      function ( vehicle )
         if vehicle:hasEngine()  then
           table.insert(tt,vehicle)
         end
      end
      )
      return tt
  end

Edited February 14, 2020 by HaNNoveraNer

[EricD]

Thank you HaNNoveraNer

I had a memory of "hasEngine" but I was trying vehicle.hasEngine. Once again: thanks for your quick reply.

Best wishes

Eric

 

[martin51]

@Eric Danvers 

Hello Eric,

I don't know if you know this

for information

all Lua functions and properties are documented directly in the script editor by auto-completion Press colon (:) for a list of all functions, 
dot (.) for a list of all properties and 
CTRL+space for an overview of all global variables and parameters.

NEO has answered a question from TIMBA
every vehicle has the function "hasEngine", with which you can check if it is a powered vehicle

local vehicles = layout:getVehiclesOnTrack(...)
for k, v in pairs(vehicles) do
  if v:hasEngine() then
    -- Vehicle ist eine Lok
  end
end
 

Best wishes

Martin

[EricD]

Hello Martin

I tried .(dot) CTRL+space but not :(colon) CTRL+space. I won't make that mistake again!

Best wishes

Eric 

[Goetz]

vor 20 Stunden schrieb Eric Danvers:

I was trying vehicle.hasEngine.

That would be a variable or property. Separated by a single colon.

The double colon is needed for a function or method. It includes the object (= what's in front of the colon) as the first argument.

Edited February 15, 2020 by Goetz