'Script to be triggered by a Keypadkey or X-Key to start playing an MP3 as background audio

'  When you add a new MP3 player, you need to add it's key to this array
Dim PlayerKeys() as String = {"86fecea6-0bec-43b2-8989-4c548973b94f","a8bac9b2-0898-46ad-87b8-ef668d1f3147","0b59d4f0-a95d-4bbf-b6f5-3259045d8955","32fbcbd5-a1ff-4222-ac16-319c88b1d596","da73d4fd-0713-482b-966a-bd871c89f7a7","5700a5c0-a78d-4e7a-8848-23f11f4bcd34","c31f2b8b-0768-4e76-a0ab-f6668f1078a0","4c20abe9-e44b-4caa-8ab6-918bdb4704b3"}

Dim vMixState as new system.xml.xmldocument
vMixState.LoadXML(API.XML)

Dim PlayerNumber as integer = 0						' This is the only line that needs to be changed to change the player number, note it's zero based here and one based in the names
Dim PlayerKey as string = PlayerKeys(PlayerNumber)	' Get the Key for our player from the XML
Dim PlayerTitle as string = vMixState.SelectSingleNode("//input[@key='" & PlayerKeys(PlayerNumber) & "']/@title").Value	' Get the Title for our Player

' ----------- Check to make sure no MP3 player is currently running before we start another one ----------------------
Dim PlayerIndex as integer
Dim OKToPlay = true
For PlayerIndex = 0 to PlayerKeys.Length - 1
	Dim state as string = vMixState.SelectSingleNode("//input[@key='" & PlayerKeys(PlayerIndex) & "']/@state").Value
	if state = "Running"
		console.writeline(vMixState.SelectSingleNode("//input[@key='" & PlayerKeys(PlayerIndex) & "']/@title").Value & " is currently running, " & PlayerTitle & " cannot be started")
		OKToPlay = false
	'Else
	'	console.writeline("Player number " & CStr(PlayerIndex + 1) & " is not running")
	end if
Next

If OKToPlay   '  I would have liked to just quit executing in the above For statement if another player is running but there's no Quit statement implementation here so we have to use a honking big IF instead to bypass the functional code
	'-------------- 
	Dim MP3Player as Object = Input.Find(PlayerTitle)   ' Should use the Key but it's BROKEN!!!!!  so we have to use the Title instead
	console.writeline(PlayerTitle & " is now starting " & PlayerKey)

	' Configure Input to match requirements in case this is a newly added MP3 player - only needed once but doesn't hurt to change again
	MP3Player.Function("AutoPauseOff")			' Don't pause if someone sets this as "live" and then switches away from it, shouldn't happen but let's be safe
	MP3Player.Function("AutoPlayOff")			' Likewise don't start playing it if someone switches it "live"
	MP3Player.Function("AutoRestartOff")		' And don't restart it automatically either -- essentially we turn off the automatic actions
	MP3Player.Function("LoopOff")				' We are setting these to only play once, may need another script for repeat plays
	MP3Player.Function("AudioBusOff","M")		' Audio doesn't go to the master bus, it will get fed to the master through the local sound board
	MP3Player.Function("AudioBusOn","A")		' Audio goes to BUS A which feeds to our local sound board
	 
	' Now to set the MP3 to play

	MP3Player.Function("Restart")		' Make sure we play from the start
	MP3Player.Function("AudioOn")		' Turn on audio for this input
	MP3Player.Function("BusAAudioOn")	' Turn on Bus A to the sound board

	MP3Player.Function("Play")			' Start the MP3 playing (finally!)
	console.writeline ( PlayerTitle & " should be playing")

	Dim MP3IsPlaying as boolean = true
	Do While MP3IsPlaying				' Now we loop until the MP3 finishes playing
		sleep(1000)																											' Start the loop by waiting 1 seecond (1000 milliseconds)
		vMixState.loadxml( API.XML() )																						' Load that XML into a document tree 
		Dim Duration as string = vMixState.SelectSingleNode("//input[@key='" & PlayerKey & "']/@duration").Value				' Find the "Duration" of the MP3 (in milliseconds)
		Dim Position as string = vMixState.SelectSingleNode("//input[@key='" & PlayerKey & "']/@position").Value				' Find the current playing point of the MP3 (in millseconds)
		'console.writeline("Duration=" & Duration & "  Position=" & Position)
		If Duration = Position																								' If the position is the same as the duration then it's finished playing
			MP3IsPlaying = false																
		end if
	Loop

	console.writeline(PlayerTitle & " finished playing")

	MP3Player.Function("AudioOff")		' Done so turn off the audio for this input
	MP3Player.Function("BusAAudioOff")	' And turn off the input from Bus A (problematic, if we have any other input also playing through the local sound board!)

	console.writeline("Audio reset after " & PlayerTitle & " finished, script terminating")
end if