[Filip Vandueren]

This seems to work:

seedRandom(index,true);
moveDistance = 100;
moveEvery = framesToTime(25);
startPos = [960,540];
moves=[startPos];
possibleMoves = [[1,0],[-1,0],[0,1],[0,-1]];
st = thisLayer.startTime;
// create all moves up front
for (i=0; i < (thisComp.duration - st); i+=moveEvery) {
	move = possibleMoves[ Math.floor(random(4)) ];
	lastPos = moves[moves.length-1];
	newPos = lastPos + move*moveDistance;
	moves.push(newPos);
}
t=(time-st)%moveEvery;
step = Math.floor((time-st)/moveEvery);
easeOut( t, 0, moveEvery, moves[step], moves[step+1]);

[Filip Vandueren]

Something along these lines:

nk = marker.nearestKey(time);
nki = Math.max(1, nk.time<=time ? nk.index : nk.index-1 ); 
nkt = marker.key(nki).time;
transition = 0.3;
s=linear(time, nkt, nkt+transition, 50+(nki*50), 100+(nki*50));
[s,s];

[Filip Vandueren]

The expression has no memory of previous hits, when you ask it to create a random value.

You have to count the number of times the hit has occured up to the current frame (using a loop and valueAtTime()) , and then you can use that total as a seed for the random value.

[Filip Vandueren]

t=effect("time")("Slider").value;
frameRateOrderOfMagnitude = Math.pow(10,-Math.floor(Math.log10(thisComp.frameDuration)));
secs = Math.trunc(t);
frames = timeToFrames(t-secs);
output = secs+(frames/frameRateOrderOfMagnitude);

[Filip Vandueren]

Can you post the project ?

[Filip Vandueren]

Here it is rewritten for specifically revealing only all paths of the selected layers. There may be a more efficient way to first find all Paths in the selected layers, my extendscripting is a bit rusty.

app.beginUndoGroup("reveal Paths");
selLayers = app.project.activeItem.selectedLayers;
props=[];
function findPaths(prop) {
    if (prop.matchName == "ADBE Vector Shape") {
        props.push(prop);
    }
    if (prop.numProperties) {
        for (var i=1; i<=prop.numProperties; i++) {
            findPaths(prop(i));
            }
        }
  }
for (l in selLayers) {
    selLayer=selLayers[l];
    if (selLayer.matchName == "ADBE Vector Layer") {
        numGroups = selLayer("ADBE Root Vectors Group").numProperties;
        findPaths(selLayer("ADBE Root Vectors Group"),props); 
    }
 }
// prop we want to reveal:
originalExpression=[];
for (p=0; p < props.length; p++) {
    prop = props[p]
    originalExpression[p] = prop.expression;
    prop.expression= "1/0"; // create an expression error
    //reveal expression errors:
}
app.executeCommand( app.findMenuCommandId("Reveal Expression Errors") );
$.sleep(1); // wait 1 ms
// reset expression to previous value
for (p=0; p < props.length; p++) {
    props[p].expression = originalExpression[p];
}
app.endUndoGroup();

[Filip Vandueren]

Perhaps the tutorial used an expression like time*1000, and it’s applied to a property that reaches its limit of the highest number it can hold at the 1 minute mark ?

[Filip Vandueren]

It depends;

if you precomp the keyboard as a composition where every key is lit up at a specific time, you can get the “current” character, and with a timeremap-expression, jump to the appropriate time (you would do a lookup in an array of known times “a=1, b=2;…)

But things get more complicated with shift-buttons, switching to a different keyboard layout to type in numbers or other special characters that are on screen 2 or 3 of the keyboard interface widget, etc.

[Filip Vandueren]

Here’s the hack I came up with to show a specific path:

https://creativecow.net/forums/thread/show-a-property-using-extendscript/#post-2403741

Show a property using Extendscript

[Filip Vandueren]

Hi Nick,

maybe something like this:

wps=3; // wiggles per second
seedRandom(index,true);
for (i=0; i<=time*wps; i++) {
	prevRandom=gaussRandom(-20,20);
}
nextRandom = gaussRandom(-20,20);
ease(time%(1/wps), 0, 1/wps, prevRandom, nextRandom);