noha

I've been working out a patch to add and delete tracks, as in an audio mixer, using javascript to generate bpatcher objects that i have designed. Everything seems to work fine except when I delete the second track - when it is there are three or less tracks. It seems to make no sense, as all gnarly bugs do. Maybe someone wants to take a look? The bpatcher referenced is available at 

if(numTracks) this.patcher.remove(theFunnel);

if(numTracks) theFunnel = this.patcher.newdefault(50,600, "funnel", a);

//theTracks[k] = this.patcher.newdefault(50+(k*180),200,"bpatcher","T3Dtrack.maxpat");

theTracks[k] = this.patcher.newobject("bpatcher", 50+(k*180), 110, 180, 420, 0, 0,"T3D_track.maxpat", 0);

this.patcher.connect(theTracks[j], 0, theFunnel, j);

if(numTracks) this.patcher.connect(theFunnel, 0, ourself, 0);

// list -- read from the created funnel object

theTracks[k-1].rect= [50+((k-1)*180), 110, 50+((k-1)*180)+180, 530];

if(numTracks) theFunnel = this.patcher.newdefault(50,600, "funnel", numTracks);

this.patcher.connect(theTracks[h], 0, theFunnel, h);

I've been working out a patch to add and delete tracks, as in an audio mixer, using javascript to generate bpatcher objects that i have designed. Everything seems to work fine except when I delete the second track - when it is there are three or less tracks. It seems to make no sense, as all gnarly bugs do. Maybe someone wants to take a look? The bpatcher referenced is available at http://mathbeat.com/box/T3D_track.maxpat

and the makeTracks.js code is
// makeTracks.js
//
// peel off and destroy tracks at will
//
//

// inlets and outlets
inlets = 1;
outlets = 1;

// global variables and arrays
var numTracks = 0;

//MaxOBJ variables for scriptin
var theTracks = new Array(8);
var thevalues = new Array(128);
var theFunnel;

     //bail if no args
    if(arguments.length) {
        a = arguments[0];

        //safety check
        if (a
        if (a>8) a=8;

        if(numTracks) this.patcher.remove(theFunnel);       

        numTracks=a;
        k=numTracks-1;
        if(numTracks) theFunnel = this.patcher.newdefault(50,600, "funnel", a);

        //theTracks[k] = this.patcher.newdefault(50+(k*180),200,"bpatcher","T3Dtrack.maxpat");
        theTracks[k] = this.patcher.newobject("bpatcher", 50+(k*180), 110, 180, 420, 0, 0,"T3D_track.maxpat", 0);
        for(j=0;j
            this.patcher.connect(theTracks[j], 0, theFunnel, j);
        }
        ourself = this.box;
        if(numTracks) this.patcher.connect(theFunnel, 0, ourself, 0);
    }

// list -- read from the created funnel object
function list(val)
{

    if(arguments.length==2)
    {
        removal = arguments[0];
        this.patcher.remove(theTracks[removal]);
         this.patcher.remove(theFunnel);
         if(numTracks)
         {
             if(removal < numTracks-1) {
                 for(k=removal+1;k
                 {
                     theTracks[k-1] = theTracks[k];
                     theTracks[k-1].rect= [50+((k-1)*180), 110, 50+((k-1)*180)+180, 530];
                }
            }

            numTracks--;
            if(numTracks)  theFunnel = this.patcher.newdefault(50,600, "funnel", numTracks);
            for(h=0;h
            {
                   this.patcher.connect(theTracks[h], 0, theFunnel, h);
            }
            ourself = this.box;
            if(numTracks) this.patcher.connect(theFunnel, 0, ourself, 0);
            outlet(0, numTracks);
        }
    }
}

function bang(val) {
         this.patcher.remove(theFunnel);
    for(i=0;i
        this.patcher.remove(theTracks[i]);
     }

crashing-bug-adding-and-deleting-bpatchers-halp

Probably some object box/patch cord deletion/creation ordering issue. Try flipping this (line 52):

Probably some object box/patch cord deletion/creation ordering issue.  Try flipping this (line 52):

this.patcher.remove(theTracks[removal]);
this.patcher.remove(theFunnel);

this.patcher.remove(theFunnel);
this.patcher.remove(theTracks[removal]);

crashing bug adding and deleting bpatchers - halp!