Pos Up

// Cavalry Script: Keyfast - Pos Up
// For each selected layer, animates Y position up by 30px over 30 frames (relative to current value)
// Now applies custom Bezier easing to the position.y keyframes

var selectedLayers = api.getSelection();

if (selectedLayers.length === 0) {
    console.warn("No layers are selected. Please select some layers first.");
} else {
    var currentFrame = api.getFrame();
    var frameOffset = 30; // Number of frames for the animation
    var secondFrame = currentFrame + frameOffset;
    
    // Easing data from fastslow Y easing.json
    var easingData = [
        {
            interpolation: 0,
            leftBez: { x: -3.0665670527090496, y: -25.3457026717691 },
            rightBez: { x: 5.340056419372559, y: 44.13648223876953 },
            locked: true,
            weightLocked: true
        },
        {
            interpolation: 0,
            leftBez: { x: -100.2120136392516, y: -5.839692905031199 },
            rightBez: { x: 57.54749298095703, y: 3.353487014770508 },
            locked: true,
            weightLocked: true
        }
    ];
    
    console.info("Animating Y position on " + selectedLayers.length + " selected layer(s)...");
    
    for (var i = 0; i < selectedLayers.length; i++) {
        var layerId = selectedLayers[i];
        var layerName = api.getNiceName(layerId);
        
        try {
            if (api.hasAttribute(layerId, "position")) {
                var pos = api.get(layerId, "position");