gif.cocoascript.js

var NUM_ARTBOARDS = 360,
    NUM_COLS = 6,
    NUM_ROWS = NUM_ARTBOARDS / NUM_COLS,
    LAYER_NAME = "Layer to modify",
    CHANGE_PER_ARTBOARD = 360 / NUM_ARTBOARDS;

var document = context.document;
var firstArtboard = [[document artboards] firstObject];
var yOffset = 0;
var frame = 2;

for (var row = 0; row < NUM_ROWS; row++) {
  for (var col = 0; col < NUM_COLS; col++) {
    if (col == 0 && row == 0) {
      continue;
    }
    var newArtboard = [firstArtboard duplicate];
    var x = (col % NUM_COLS) * (40 + [[firstArtboard frame] width]);
    [[newArtboard frame] addX:x];
    [[newArtboard frame] addY:yOffset];
    [newArtboard setName:generateFrameName(frame)];

    step(newArtboard, (frame - 1) * CHANGE_PER_ARTBOARD);

    frame += 1;
  }
  yOffset += [[firstArtboard frame] height] + 40;
}

function generateFrameName(frame) {
  if (frame < 10) {
    return "Frame 0" + frame;
  }

  return "Frame " + frame;
}

function step(artboard, change) {
  var children = [artboard children];
  var numberOfChildren = [children count];

  for (var i = 0; i < numberOfChildren; i++) {
    var layer = children[i];
    if ([layer name] != LAYER_NAME) {
      continue;
    }

    // Make change
  }
}