help with checker room puzzle script

[roachburn]

I am trying to recreate the checkered room puzzle with 9 pressure plates using a lua script. when testing this as soon as i put a rock on the pressure plate, I crash back to the editor and I get the error under the first line of code saying "attempt to call method "activate" (a nil value) x"

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function checkerdoor()
if checkerplate1:activate() == true and
checkerplate1:activate() == true and
checkerplate3:activate() == true and
checkerplate5:activate() == true and
checkerplate7:activate() == true and
checkerplate9:activate() == true then
checkerdoor:activate()
else
checkerdoor:deactivate()
end
end

what am i doing wrong? is there a better way to code this? Thanks for the help!

[Grimwold]

I think you need

Code: Select all

checkerplate1:isDown()

and so on...

I'm also pretty sure you don't need == true with boolean values..

So (without being able to test it myself), I think your code should be:

Code: Select all

function checkTheDoor()
  if checkerplate1:isUp() and
     checkerplate2:isDown() and
     checkerplate3:isUp() and
     checkerplate4:isDown() and
     checkerplate5:isUp() and
     checkerplate6:isDown() and
     checkerplate7:isUp() and
     checkerplate8:isDown() and
     checkerplate9:isUp()
   then
     checkerdoor:activate()
  else
     checkerdoor:deactivate()
  end
end

edit - corrected for comments made below by Komag and Montis.

[Komag]

(need to remove the repeat of plate1)

also you'll need to make sure the other plates are UP

[Montis]

edit - final thing... you would need to connect this script twice from each pressure plate. once with an activate and again with a deactivate action... then the test is done every time the state of any plate is changed.

actually you only need to connect it once on the "any" event.

[Grimwold]

Thanks for the corrections guys! I've edited my reply above... This is what comes of not being able to test stuff. (so I'm gonna see if the editor will actually run on this PC!)

[roachburn]

Thanks for the tips. I am still getting an error at the last line checkerdoor:deactivate() attempt to index global "checkerdoor" (a funtion value) x

I wish I knew what these errors mean then i could probably fix it on my own but I am just not familiar with programming. I am learning quite a bit though, so thanks for that!

[roachburn]

Ok I fixed it. I renamed the door to checkerdoor1 and it fixed the issue. Thanks guys!

[Komag]

Here is my version that works:
- plates are all linked to script with "any"
- door is ID "checkeredport"
- the up/down patter allows entry/exit from both middle ends

Code: Select all

function openport()
  if checkerplate1:isUp() and
     checkerplate2:isDown() and
     checkerplate3:isUp() and
     checkerplate4:isDown() and
     checkerplate5:isUp() and
     checkerplate6:isDown() and
     checkerplate7:isUp() and
     checkerplate8:isDown() and
     checkerplate9:isUp()
  then
     checkeredport:open()
  else
     checkeredport:close()
  end
end

[Grimwold]

Ok I fixed it. I renamed the door to checkerdoor1 and it fixed the issue. Thanks guys!

Yeah, I failed to notice that the door and the function had the same name. I have edited my script to change the function name in case anyone else reads this... it should now be very similar to Komag's version.

[Billick]

Don't forget the checkered room has 2 solutions