If Else FX Flip Switch

Scripting with Gig Performer
1

Hello,

I’m trying to use GPScript that will use one widget to “Flip” between eight song parts as follows:

Swell <----> SwellFX
Great <----> GreatFX
Choir <----> ChoirFX
Swell <----> PedalFX

I believe that I have a strategy to implement this, but I’m struggling to get my GPScript to compile. The plan is to use an If/Else statement to assign different actions to the widget depending on the state of the songpart index. If the song index is 1-4, then the widget will add 4 to the index. If the song index is 5-8, then the widget will subtract 4 from the index.

Can anyone please assist? The script is in the gig script of the .gig below.

Thanks in advance!

If Else Song Part.gig (26.3 KB)

2

Paste your script and paste the actual error message you’re getting.

1 Like
3

The script is:

//Get Song Part

var FXSwitch : Widget
var SongPartNumber : Integer

On Songpart(oldSongpartIndex : Integer, newSongpartIndex : Integer)
SongPartNumber = GetCurrentSongPart()

End 

//Find Manual's FX Part
On WidgetValueChanged(newValue : double) from FXSwitch 

If SongPartNumber <= 4 Then
    SetSongPart(index: SongPartNumber + 4)
    Elsif SongPartNumber >= 5 Then
    SetSongPart(index: SongPartNumber - 4)
	        
End

My error message is:

Gig (GigScript) - - Syntax Error in “Main”: Line 14, Col 1: Unexpected or unrecognized token: ‘If’
Mismatched input ‘If’ expecting End

4

ok - several issues with this

  1. Your SetSongPart function calls have “index:” and that’s not valid — you’re making a function call, not delcaring a variable

  2. If this is in a GigScript, you can’t declare widgets.

1 Like
5

And an “End” is missing for the if clause.
And the callback you cannot use

2 Likes
6

Thanks for your guidance! I tidied up the script and spent time with the manual getting to know objects available in a Rackspace/Gig Script setting.

However, I’m still struggling to setup a callback that can be triggered via midi/widget in the Gig Script. I see many available in a Rackspace Script, but I can’t migrate because it is unable to use song functions such as:

On Songpart(oldSongpartIndex : Integer, newSongpartIndex : Integer)
SongPartNumber = GetCurrentSongPart()

Any direction on solving this dilemma? Here is the current script:

//Patch Control <---> FX Control

var SongPartNumber : Integer
SomeMidiInBlock : MidiInDevice

On Songpart(oldSongpartIndex : Integer, newSongpartIndex : Integer)
SongPartNumber = GetCurrentSongPart()

End 

On ControlChangeEvent (c : ControlChangeMessage) From SomeMidiInBlock

    If SongPartNumber <= 4 Then
        SetSongPart(SongPartNumber + 4)
        Elsif SongPartNumber >= 5 Then
        SetSongPart(SongPartNumber - 4)
    End
End
7

The reason you cannot access widgets directly from a gigscript is because there is no way to guarantee that a specific widget that you reference from a gig script will actually be available.

However, if you want to trigger a callback in a gigscript from a rackspace (say), then you can use OSC messages.

2 Likes
8

Brilliant! I changed my callback trigger to OSC instead of MIDI and corrected the “break point” (0-3, 4-7 vs 1-4, 5-8) and now the patch is working perfectly. Here’s the script and .gig:

//Patch Control <---> FX Control

var SongPartNumber : Integer

On Songpart(oldSongpartIndex : Integer, newSongpartIndex : Integer)
SongPartNumber = GetCurrentSongPart()

End 

On OSCMessageReceived(message : OSCMessage) Matching "/GigScript/FXSwitch"
    If SongPartNumber <= 3 Then
        SetSongPart(SongPartNumber + 4)
        Elsif SongPartNumber >= 4 Then
        SetSongPart(SongPartNumber - 4)
    End
End

If Else Song Part.gig (17.9 KB)

I’m really starting to understand the power and practicality of OSC. Thanks again for your help and patience!

Sam

9

You don’t need that test. If the songpart is NOT <= 3 then it must be >= 4 so just do

Else SetSongPart(SongPartNumber - 4)

instead of that extra test.