ae-textanimation-aecran

var charDelay = 0.05; // ~0.05 Time offset before the next character also starts to animate
var charDur = 0.1; // ~0.1-0.2 How long each character animates
var fps = 5; // ~5 Speed of random characters
var baseHoldTime = 0.8; // Default for in case the hold time is not mentioned in the 2D array
var adjustedHoldTime = 0; // Initializing
var startText = "xxx"; // Initializing
var endText = "yyy"; // Initializing
var largerCharCount = 0; // Initializing

// Array of words/phrases to animate through [Word, HoldTimeAdjustment]
var wordArray = [
					["EAT", 0],
					["SLEEP", 0],
					["LIVE", 0],
					["LAUGH", -0.2],
					["LOVE", 1],
					["GETREADYTO", 0],
					["LOOP IT", 0]
				]; 

var totalWords = wordArray.length;

var wordsTimeTotal = 0; // Cumulative time of words so far
var w = 0; // Counter for current word we are on

// Determine current word [w] based on time
for (w = 0; w < totalWords; w++) {

	startText = wordArray[w][0];
	endText = (w + 1 < totalWords) ? wordArray[w + 1][0] : wordArray[0][0]; // Next word (w+1) or go to word 0 if end of array

	// Applying word-specific hold time adjustment from 2D array
	adjustedHoldTime = baseHoldTime + wordArray[w][1]; 
	if (adjustedHoldTime < 0) { adjustedHoldTime = 0; } // Preventing negative holdtime

	largerCharCount = Math.max(startText.length, endText.length);
    var currentWordTime = adjustedHoldTime + (largerCharCount * charDelay) + charDur; // use the larger one because even a shorter start/end word will have to animate ALL characters of the larger word

    if (time <= (wordsTimeTotal + currentWordTime)) {
        break; // Stop once we've passed the current time
    }
	wordsTimeTotal += currentWordTime;
}

var t = time - adjustedHoldTime;

var getRandomCharacter = function(seed) {
    var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    seedRandom(Math.floor(time * fps) + seed, true); // Use time for consistency across frames
    return chars.charAt(random(0, chars.length));
};

var output = [];

for (var i = 0; i < largerCharCount; i++) {
    var myCharDelay = wordsTimeTotal + (charDelay * i);

    if (t < myCharDelay) {
        // Output char from original word
        output.push(startText.charAt(i) || '');  // Add '' if no char at index i to avoid out of bounds
    } else if (t < myCharDelay + charDur) {
        // Output random character (junk)
        output.push(getRandomCharacter(i));
    } else {
		// If startText is longer than endText, remove characters from the LEFT of startText
        if (startText.length > endText.length) {
            output.push(endText.charAt(i - (startText.length - endText.length)) || ''); // Start from the end of startText
        } else {
            output.push(endText.charAt(i) || ''); // Output char from the original word & Add '' if no char
        }
    }
}

// Return the final result (joined string)
output.join('');