Exploring the World of 2D Array Animation

I'm in the process of creating a Pacman ghost using visual 2D arrays. I would like the ghost to move similar to this: https://i.sstatic.net/KPmUt.gif

I am considering implementing CSS transitions for the movement, but I'm unsure about how to do it! If there's a way to achieve this using JavaScript, that would also be very helpful. Below is my code:

<!doctype html>
<html>
    <head>
        <title>Visualizing 2D arrays</title>
        <style>
            #stage {
                position:relative;
            }
    
            .cell {
                position:absolute;
                width:30px;
                height:30px;
                border:1px solid black;
                background-color:black;
            }
        </style>
    </head>

    <body>

        <div id="stage"></div>

        <script>
            // JavaScript code goes here...
        </script>

    </body>

</html>

Any guidance on achieving the desired movement effect would be greatly appreciated!

Answer №1

It seems that using CSS transitions may not be the ideal solution for your situation. Typically, transitions are applied to entire HTML elements, whereas you are looking to selectively change certain colors of the ghost. I have devised a workaround for this issue in my fiddle. The solution involves adding an additional visual pattern representing the second frame of the ghost movement, demonstrated below:

var patterns = [
  // Arrays defining the visual patterns of the ghost movement frames
];

An essential step in creating this animation is to establish a render loop using the requestAnimationFrame function. This loop ensures that the render function runs continuously.

// Define variables for time tracking and animation speed
// Implement the render function to display the animation based on elapsed time

The render function calculates the elapsed time of the animation in seconds, which determines the current frame index from the predefined patterns array. By applying mathematical operations, such as floor division and modulo, the correct index is selected within the bounds of the array length. Subsequently, the selected pattern is passed to the colorizeDivs function for updating the cell colors.

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