PixelSwirl/mystify.html at main · LockMan007/PixelSwirl · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Atari Mystify</title>
    <!-- Tailwind CSS CDN for styling -->
    <script src="https://cdn.tailwindcss.com"></script>
    <style>
        /* Apply Inter font and basic body styling */
        body {
            font-family: "Inter", sans-serif;
            margin: 0;
            overflow: hidden; /* Prevent scrollbars */
            background-color: #000; /* Black background for the canvas */
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            width: 100vw;
        }

        /* Canvas will fill the entire screen */
        canvas {
            display: block;
            background-color: #000; /* Ensure canvas background is black */
        }

        /* Styling for the control panel */
        .control-panel {
            position: absolute;
            top: 20px;
            right: 20px;
            background-color: rgba(0, 0, 0, 0.7); /* Semi-transparent black */
            padding: 1.5rem;
            border-radius: 0.75rem; /* Rounded corners */
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            color: #fff;
            max-width: 300px;
            z-index: 10; /* Ensure it's above the canvas */
            transition: opacity 0.3s ease-in-out; /* Add transition for fade effect */
        }

        /* Class to hide the control panel */
        .control-panel.hidden-controls {
            opacity: 0;
            pointer-events: none; /* Disable interactions when hidden */
        }

        .control-group {
            margin-bottom: 1rem;
        }

        .control-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: bold;
            color: #a0aec0; /* Light gray label color */
        }

        .control-group input[type="range"],
        .control-group select {
            width: 100%;
            padding: 0.5rem;
            border-radius: 0.5rem;
            border: 1px solid #4a5568; /* Darker border */
            background-color: #2d3748; /* Dark background for inputs */
            color: #fff;
            appearance: none; /* Remove default browser styling for range input */
            -webkit-appearance: none;
        }

        /* Custom styling for range input thumb */
        .control-group input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: #63b3ed; /* Blue thumb */
            cursor: pointer;
            margin-top: -6px; /* Center thumb vertically */
            box-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
        }

        .control-group input[type="range"]::-moz-range-thumb {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: #63b3ed;
            cursor: pointer;
            box-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
        }

        .control-group input[type="range"]::-webkit-slider-runnable-track {
            height: 4px;
            background: #4a5568;
            border-radius: 2px;
        }

        .control-group input[type="range"]::-moz-range-track {
            height: 4px;
            background: #4a5568;
            border-radius: 2px;
        }

        .control-group select option {
            background-color: #2d3748; /* Dark background for select options */
            color: #fff;
        }

        /* Checkbox specific styling */
        .control-group input[type="checkbox"] {
            width: auto; /* Override 100% width for checkbox */
            margin-right: 0.5rem;
            transform: scale(1.2); /* Make checkbox slightly larger */
        }

        .reset-button {
            width: 100%;
            padding: 0.75rem;
            background-color: #4299e1; /* Blue button */
            color: #fff;
            border: none;
            border-radius: 0.5rem;
            cursor: pointer;
            font-weight: bold;
            transition: background-color 0.2s ease-in-out, transform 0.1s ease-in-out;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }

        .reset-button:hover {
            background-color: #3182ce; /* Darker blue on hover */
            transform: translateY(-1px);
        }

        .reset-button:active {
            transform: translateY(0);
            box-shadow: none;
        }
    </style>
</head>
<body>
    <canvas id="mystifyCanvas"></canvas>

    <div class="control-panel">
        <h2 class="text-xl font-bold mb-4 text-center text-blue-300">Atari Mystify Controls</h2>

        <div class="control-group">
            <label for="numObjects">Number of Objects: <span id="numObjectsValue">5</span></label>
            <input type="range" id="numObjects" min="1" max="20" value="5">
        </div>

        <div class="control-group">
            <label for="numNodes">Nodes per Object: <span id="numNodesValue">4</span></label>
            <input type="range" id="numNodes" min="3" max="10" value="4">
        </div>

        <div class="control-group">
            <label for="speedControl">Speed: <span id="speedValue">1.0</span>x</label>
            <input type="range" id="speedControl" min="0.1" max="10.0" step="0.1" value="1.0">
        </div>

        <div class="control-group">
            <label for="trailFrequency">Trail Frequency: <span id="trailFrequencyValue">10</span></label>
            <input type="range" id="trailFrequency" min="1" max="50" value="10">
        </div>

        <div class="control-group flex items-center">
            <input type="checkbox" id="individualPrints" class="mr-2">
            <label for="individualPrints" class="mb-0">Individual Prints (Hollow)</label>
        </div>

        <div class="control-group flex items-center">
            <input type="checkbox" id="autoHideControls" class="mr-2">
            <label for="autoHideControls" class="mb-0">Auto-hide Controls</label>
        </div>

        <div class="control-group">
            <label for="colorPalette">Color Palette:</label>
            <select id="colorPalette">
                <option value="classicAtari">Classic Atari</option>
                <option value="vibrantAtari">Vibrant Atari</option>
                <option value="monochrome">Monochrome (Green)</option>
            </select>
        </div>

        <button id="resetButton" class="reset-button">Reset Animation</button>
    </div>

    <script>
        // Get the canvas element and its 2D rendering context
        const canvas = document.getElementById('mystifyCanvas');
        const ctx = canvas.getContext('2d');
        const controlPanel = document.querySelector('.control-panel'); // Get the control panel element

        // Global variables to manage animation and settings
        let objects = []; // Array to hold all animated objects
        let animationFrameId; // Stores the ID of the requestAnimationFrame, used for cancellation
        let frameCount = 0; // Global frame counter for individual prints

        // Default settings for the animation
        const settings = {
            numObjects: 5,
            numNodes: 4,
            speedMultiplier: 1.0, // New setting for overall animation speed
            trailFrequency: 10, // Higher value means more prints visible at once.
            trailMode: 'fade', // New setting: 'fade' or 'individual'
            colorPalette: 'classicAtari', // Default color palette
            initialSpeed: 2, // Base speed for objects (used for initial velocity generation)
            maxSpeedVariance: 1, // Max random speed added/subtracted
            autoHideControls: true // New setting: controls auto-hide by default
        };

        // Define Atari-inspired color palettes
        const palettes = {
            classicAtari: [
                '#A00000', // Dark Red
                '#00A000', // Dark Green
                '#0000A0', // Dark Blue
                '#A0A000', // Dark Yellow
                '#A000A0', // Dark Magenta
                '#00A0A0', // Dark Cyan
                '#C0C0C0', // Light Gray
                '#404040'  // Dark Gray
            ],
            vibrantAtari: [
                '#FF0000', // Bright Red
                '#00FF00', // Bright Green
                '#0000FF', // Bright Blue
                '#FFFF00', // Bright Yellow
                '#FF00FF', // Bright Magenta
                '#00FFFF', // Bright Cyan
                '#FFFFFF', // White
                '#808080'  // Medium Gray
            ],
            monochrome: [
                '#00FF00', // Bright Green (for old CRT feel)
                '#00CC00', // Medium Green
                '#009900', // Dark Green
                '#006600'  // Very Dark Green
            ]
        };

        /**
         * Initializes the canvas size and sets up event listeners for window resize
         * and UI controls.
         */
        function init() {
            // Set initial canvas size to fill the window
            resizeCanvas();

            // Add event listener to resize canvas when window size changes
            window.addEventListener('resize', resizeCanvas);

            // Get UI elements
            const numObjectsInput = document.getElementById('numObjects');
            const numObjectsValueSpan = document.getElementById('numObjectsValue');
            const numNodesInput = document.getElementById('numNodes');
            const numNodesValueSpan = document.getElementById('numNodesValue');
            const speedControlInput = document.getElementById('speedControl');
            const speedValueSpan = document.getElementById('speedValue');
            const trailFrequencyInput = document.getElementById('trailFrequency');
            const trailFrequencyValueSpan = document.getElementById('trailFrequencyValue');
            const individualPrintsCheckbox = document.getElementById('individualPrints');
            const autoHideControlsCheckbox = document.getElementById('autoHideControls'); // New auto-hide checkbox
            const colorPaletteSelect = document.getElementById('colorPalette');
            const resetButton = document.getElementById('resetButton');

            // Set initial values for UI elements based on settings
            numObjectsInput.value = settings.numObjects;
            numObjectsValueSpan.textContent = settings.numObjects;
            numNodesInput.value = settings.numNodes;
            numNodesValueSpan.textContent = settings.numNodes;
            speedControlInput.value = settings.speedMultiplier;
            speedValueSpan.textContent = settings.speedMultiplier.toFixed(1);
            trailFrequencyInput.value = settings.trailFrequency;
            trailFrequencyValueSpan.textContent = settings.trailFrequency;
            individualPrintsCheckbox.checked = (settings.trailMode === 'individual');
            autoHideControlsCheckbox.checked = settings.autoHideControls; // Set initial state for auto-hide checkbox
            colorPaletteSelect.value = settings.colorPalette;

            // Add event listeners for UI control changes
            numObjectsInput.addEventListener('input', (e) => {
                settings.numObjects = parseInt(e.target.value);
                numObjectsValueSpan.textContent = settings.numObjects;
                resetAnimation();
            });

            numNodesInput.addEventListener('input', (e) => {
                settings.numNodes = parseInt(e.target.value);
                numNodesValueSpan.textContent = settings.numNodes;
                resetAnimation();
            });

            speedControlInput.addEventListener('input', (e) => {
                settings.speedMultiplier = parseFloat(e.target.value);
                speedValueSpan.textContent = settings.speedMultiplier.toFixed(1);
            });

            trailFrequencyInput.addEventListener('input', (e) => {
                settings.trailFrequency = parseInt(e.target.value);
                trailFrequencyValueSpan.textContent = settings.trailFrequency;
                if (settings.trailMode === 'individual') {
                    resetAnimation();
                }
            });

            individualPrintsCheckbox.addEventListener('change', (e) => {
                settings.trailMode = e.target.checked ? 'individual' : 'fade';
                resetAnimation();
            });

            // Event listener for the new auto-hide controls checkbox
            autoHideControlsCheckbox.addEventListener('change', (e) => {
                settings.autoHideControls = e.target.checked;
                // If auto-hide is turned off, ensure controls are visible
                if (!settings.autoHideControls) {
                    controlPanel.classList.remove('hidden-controls');
                } else {
                    // If auto-hide is turned on, and mouse is not over the body, hide them
                    // This handles cases where user checks it while mouse is already outside
                    if (!document.body.matches(':hover')) { // Check if mouse is currently over the body
                         controlPanel.classList.add('hidden-controls');
                    }
                }
            });

            colorPaletteSelect.addEventListener('change', (e) => {
                settings.colorPalette = e.target.value;
                resetAnimation();
            });

            resetButton.addEventListener('click', resetAnimation);

            // --- Auto-hide controls logic ---
            // Initial state: If auto-hide is enabled by default, hide the controls on load.
            // They will reappear when the mouse enters the document body.
            if (settings.autoHideControls) {
                controlPanel.classList.add('hidden-controls');
            }

            // Event listener for mouse leaving the document body (browser window content area)
            document.body.addEventListener('mouseleave', () => {
                if (settings.autoHideControls) {
                    controlPanel.classList.add('hidden-controls');
                }
            });

            // Event listener for mouse entering the document body (browser window content area)
            document.body.addEventListener('mouseenter', () => {
                if (settings.autoHideControls) {
                    controlPanel.classList.remove('hidden-controls');
                }
            });

            // Start the initial animation
            resetAnimation();
        }

        /**
         * Resizes the canvas to fill the entire browser window.
         * This function is called on initial load and whenever the window is resized.
         */
        function resizeCanvas() {
            canvas.width = window.innerWidth;
            canvas.height = window.innerHeight;
            // When canvas resizes, the content is cleared, so we need to reset the animation
            resetAnimation();
        }

        /**
         * Generates a single animated object with a specified number of nodes.
         * Each object now contains its current nodes, a history of snapshots for trails, and its color.
         * @returns {Object} An object containing nodes, trailSnapshots, and color for a single animated shape.
         */
        function generateObject() {
            const currentPalette = palettes[settings.colorPalette];
            // Pick a random color from the selected palette for this object
            const objectColor = currentPalette[Math.floor(Math.random() * currentPalette.length)];
            const nodes = [];

            for (let i = 0; i < settings.numNodes; i++) {
                // Random initial position within canvas bounds
                const x = Math.random() * canvas.width;
                const y = Math.random() * canvas.height;

                // Random initial velocity, ensuring some movement
                // Initial speed is set here, then scaled by speedMultiplier in animate()
                const dx = (Math.random() * settings.maxSpeedVariance * 2 - settings.maxSpeedVariance) + (Math.random() < 0.5 ? settings.initialSpeed : -settings.initialSpeed);
                const dy = (Math.random() * settings.maxSpeedVariance * 2 - settings.maxSpeedVariance) + (Math.random() < 0.5 ? settings.initialSpeed : -settings.initialSpeed);

                // Nodes now only store position and velocity; color is stored at the object level
                nodes.push({ x, y, dx, dy });
            }
            // Return an object with current nodes, an empty trail history, and its color
            return { nodes: nodes, trailSnapshots: [], color: objectColor };
        }

        /**
         * Resets the animation by clearing existing objects and generating new ones.
         * Cancels any ongoing animation frame and starts a new one.
         */
        function resetAnimation() {
            // Cancel any existing animation frame to prevent multiple loops running
            if (animationFrameId) {
                cancelAnimationFrame(animationFrameId);
            }

            objects = []; // Clear the existing objects
            frameCount = 0; // Reset frame counter on animation reset

            // Generate new objects based on current settings
            for (let i = 0; i < settings.numObjects; i++) {
                objects.push(generateObject());
            }

            // Clear the canvas completely before starting new animation to remove old trails
            ctx.clearRect(0, 0, canvas.width, canvas.height);

            // Start the animation loop
            animate();
        }

        /**
         * The main animation loop.
         * Updates object positions, handles collisions, and redraws the scene.
         */
        function animate() {
            // Request the next animation frame for smooth animation
            animationFrameId = requestAnimationFrame(animate);
            frameCount++; // Increment frame counter

            // --- Canvas Clearing Logic ---
            if (settings.trailMode === 'fade') {
                // For 'fade' mode, draw a semi-transparent black rectangle over the entire canvas
                // This creates the continuous fading trail effect.
                ctx.fillStyle = `rgba(0, 0, 0, ${1 / settings.trailFrequency})`;
                ctx.fillRect(0, 0, canvas.width, canvas.height);
            } else { // settings.trailMode === 'individual'
                // For 'individual' mode, clear the canvas completely each frame.
                // This is necessary to redraw all historical prints with updated opacities
                // and avoid accumulation without explicit fade.
                ctx.clearRect(0, 0, canvas.width, canvas.height);
            }

            // --- Object Update and Drawing Logic ---
            objects.forEach(obj => {
                // 1. Update current node positions and handle collisions for all nodes
                // This block ALWAYS runs to ensure smooth movement, regardless of trail mode or frequency.
                obj.nodes.forEach((node) => {
                    // Update node position based on its velocity, scaled by the speedMultiplier
                    node.x += node.dx * settings.speedMultiplier;
                    node.y += node.dy * settings.speedMultiplier;

                    // Boundary collision detection:
                    // If node hits left or right edge, reverse horizontal velocity
                    if (node.x < 0 || node.x > canvas.width) {
                        node.dx *= -1;
                        // Adjust position slightly to prevent sticking to the edge
                        node.x = node.x < 0 ? 0 : canvas.width;
                    }

                    // If node hits top or bottom edge, reverse vertical velocity
                    if (node.y < 0 || node.y > canvas.height) {
                        node.dy *= -1;
                        // Adjust position slightly to prevent sticking to the edge
                        node.y = node.y < 0 ? 0 : canvas.height;
                    }
                });

                // 2. Drawing logic based on trailMode
                if (settings.trailMode === 'fade') {
                    // Draw the current filled shape (for 'fade' mode)
                    ctx.strokeStyle = obj.color;
                    ctx.fillStyle = obj.color;
                    ctx.lineWidth = 2;
                    ctx.beginPath();
                    ctx.moveTo(obj.nodes[0].x, obj.nodes[0].y);
                    obj.nodes.forEach(node => ctx.lineTo(node.x, node.y));
                    ctx.closePath();
                    ctx.stroke();
                    ctx.fill();
                } else { // settings.trailMode === 'individual'
                    // Add current snapshot to trail if frequency condition met
                    // This is for capturing the "print" at specific intervals.
                    if (frameCount % settings.trailFrequency === 0) {
                        const snapshot = obj.nodes.map(node => ({ x: node.x, y: node.y }));
                        obj.trailSnapshots.push(snapshot);
                    }

                    // Limit trail length (number of visible prints).
                    // If the number of snapshots exceeds the desired trail frequency, remove the oldest.
                    while (obj.trailSnapshots.length > settings.trailFrequency) {
                        obj.trailSnapshots.shift(); // Remove the oldest snapshot from the beginning of the array
                    }

                    // Draw all trail snapshots with fading opacity
                    // This block ALWAYS runs to ensure smooth fading of existing prints.
                    obj.trailSnapshots.forEach((snapshot, index) => {
                        // Calculate opacity: oldest prints (index 0) are most transparent,
                        // newest (last index) are fully opaque. This creates the fade-out effect.
                        // Adding 1 to index and using length ensures alpha ranges from >0 to 1.
                        const alpha = (index + 1) / obj.trailSnapshots.length;

                        ctx.strokeStyle = obj.color;
                        ctx.lineWidth = 2;
                        ctx.globalAlpha = alpha; // Apply opacity to the current drawing operation

                        ctx.beginPath();
                        ctx.moveTo(snapshot[0].x, snapshot[0].y);
                        snapshot.forEach(pos => ctx.lineTo(pos.x, pos.y)); // Draw lines based on snapshot positions
                        ctx.closePath();
                        ctx.stroke(); // Draw only the outline (hollow)
                    });

                    // Draw the current animating shape (the "person walking")
                    ctx.globalAlpha = 1; // Ensure full opacity for the main shape
                    ctx.strokeStyle = obj.color;
                    ctx.lineWidth = 2;
                    ctx.beginPath();
                    ctx.moveTo(obj.nodes[0].x, obj.nodes[0].y);
                    obj.nodes.forEach(node => ctx.lineTo(node.x, node.y));
                    ctx.closePath();
                    ctx.stroke(); // Draw only the outline (hollow) for the main shape too, matching the prints
                }
            });
        }

        // Initialize the application when the window has fully loaded
        window.onload = init;
    </script>
</body>
</html>