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Ad Mulders · **Posted:** December 27th, 2017, 8:03 am

Hello,

For a show jumping competition i want to make a screen that helps the riders to see who's riding at the moment,
and to show them when it's their turn. With this system they know how much time they have left to prepare for their round.
The list with Current and Next riders will be displayed on a second screen. The Ring Master operates the "menu"screen.

It is a simple but effective solution and it is almost finished, but I do not know how to display the "next" riders from the list.
Another thing i can't figure out is how to go lines back. Now i can go to the next line and to the first line but not one or two lines back.
That would be very nice and make this application complete.

I have attached the .imp file and an example list to this post.
Kind Regards, Ad Mulders

Ad Mulders · **Posted:** January 4th, 2018, 12:22 pm

Happy new Year to all Opus Pro Users!!

mackavi · **Posted:** January 5th, 2018, 10:09 am

Cheers Ad and seasons greetings from the UK.

As for the question, you'd be better using scripting than actions. I'd read all the contents into an Array and simply navigate that.

</mack>

Ad Mulders · **Posted:** January 5th, 2018, 1:15 pm

Thans Mack,
Hope You can hellp me

Kind Regards, Ad

mackavi · **Posted:** January 8th, 2018, 11:47 am

Here's a working example for you and anybody looking to read from a file or navigate arrays.

download from: http://www.live.interaktiv.co.uk/?section=files

using code: readfile@digitalgrapevine.info

The core code included in the example is:

Code:

function readFile(){

myFileArray = new Array() // you also need this as a publication or page variable to display data on screen.
myIndex = 0;

//location of your file
var tmpFile = SYSTEM_PUBLICATION_DIR + "Test_list.csv";

//open the file above for reading
var tmpFileObject = OpenFile(tmpFile);

//index for array above
var tmpIndex = 0;


//loop to read through all lines in file
while (tmpFileObject.EndOfFile() == false)
   {
   //read each line into the array and increment the index
    myFileArray[tmpIndex] = tmpFileObject.ReadLine();
   tmpIndex++;
   }
   
//adjust for extra line read.   
myFileArray.length = myFileArray.length - 1
}

</mack>

Ad Mulders · **Posted:** January 8th, 2018, 12:02 pm

Thanks Mack.

Ad Mulders · **Posted:** January 10th, 2018, 7:28 am

Hello Mack.
After a few hours of trail and error I have to give it up. I am unable to process your script in my program so that I can show the next 3 participants in the "Next" list. The program is actually finished on the Next rider function. How do I process your script so that it works. Hope you want to help me.

Kind Regards, Ad Mulders

mackavi · **Posted:** January 12th, 2018, 10:14 am

Accessing other items in the array is simply a case of specifying the index value.

Here's a modified example that shows that.

code for download: readfile-v2@digitalgrapevine.info

</mack>

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