dice-roller/simulation.html at main · your5e/dice-roller · 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>Physics Simulation Tuner</title>
    <style>
        * { box-sizing: border-box; }
        body {
            font-family: system-ui, sans-serif;
            margin: 0;
            padding: 0;
            background: #1a1a1a;
            color: #fff;
            height: 100vh;
            display: flex;
            flex-direction: column;
        }
        #tray {
            width: 100%;
            flex: 1;
            background: #000;
            min-height: 0;
        }
        #controls {
            padding: 0.75rem 1rem;
            background: #222;
            flex-shrink: 0;
        }
        .control-row {
            display: flex;
            align-items: center;
            margin-bottom: 0.4rem;
            gap: 0.5rem;
        }
        .control-row label {
            width: 110px;
            flex-shrink: 0;
            font-size: 0.8rem;
        }
        .help-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #555;
            color: #ccc;
            font-size: 10px;
            cursor: help;
            flex-shrink: 0;
            position: relative;
        }
        .help-icon:hover { background: #777; }
        .help-icon:hover::after {
            content: attr(data-tip);
            position: absolute;
            bottom: 100%;
            left: 0;
            background: #000;
            color: #fff;
            padding: 0.4rem 0.6rem;
            border-radius: 4px;
            font-size: 0.75rem;
            white-space: nowrap;
            max-width: min(400px, 90vw);
            z-index: 100;
            margin-bottom: 4px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.5);
        }
        .control-row input[type="range"] {
            flex: 1;
            min-width: 80px;
        }
        .control-row .value {
            width: 55px;
            text-align: right;
            font-family: monospace;
            font-size: 0.8rem;
            padding: 0.15rem 0.25rem;
            border: 1px solid #444;
            border-radius: 3px;
            background: #333;
            color: #fff;
        }
        h3 {
            margin: 0.8rem 0 0.4rem;
            padding-bottom: 0.2rem;
            border-bottom: 1px solid #444;
            font-size: 0.85rem;
            color: #aaa;
        }
        h3:first-child { margin-top: 0; }
        .actions {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 0.8rem;
            flex-wrap: wrap;
            align-items: center;
        }
        button, select {
            padding: 0.4rem 0.8rem;
            border: none;
            border-radius: 4px;
            font: inherit;
            font-size: 0.9rem;
            cursor: pointer;
            background: #444;
            color: #fff;
        }
        button:hover { background: #555; }
        button:disabled { opacity: 0.5; cursor: not-allowed; }
        button.primary { background: #2563eb; }
        button.primary:hover { background: #3b82f6; }
        select { background: #333; }
        .sweep-controls {
            display: flex;
            gap: 0.5rem;
            align-items: center;
            flex-wrap: wrap;
            padding: 0.5rem;
            background: #333;
            border-radius: 4px;
            margin-bottom: 0.8rem;
            font-size: 0.85rem;
        }
        .sweep-controls input[type="text"] {
            width: 50px;
            padding: 0.2rem 0.3rem;
            border: 1px solid #555;
            border-radius: 3px;
            background: #222;
            color: #fff;
            font-family: monospace;
            font-size: 0.85rem;
        }
        .columns {
            display: flex;
            gap: 2rem;
        }
        .column { flex: 1; }
        @media (max-width: 700px) {
            .columns { flex-direction: column; gap: 0; }
        }
    </style>
</head>
<body>
    <div id="tray"></div>

    <div id="controls">
        <div class="actions">
            <select id="die-select">
                <option value="4">d4</option>
                <option value="6" selected>d6</option>
                <option value="8">d8</option>
                <option value="10">d10</option>
                <option value="12">d12</option>
                <option value="20">d20</option>
                <option value="all">all</option>
            </select>
            <select id="dice-count">
                <option value="1">×1</option>
                <option value="4">×4</option>
                <option value="9">×9</option>
            </select>
            <button id="roll-btn" class="primary">roll</button>
            <button id="stop-btn" style="background:#dc2626;" disabled>stop</button>
            <button id="reset-btn">Reset Defaults</button>
            <label style="font-size:0.85rem">
                <input type="checkbox" id="slowmo"> Slowmo
            </label>
        </div>

        <div class="sweep-controls">
            <span>Sweep:</span>
            <select id="sweep-param"><option value="">— parameter —</option></select>
            <span>from</span>
            <input type="text" id="sweep-min" value="">
            <span>to</span>
            <input type="text" id="sweep-max" value="">
            <span>increment</span>
            <input type="text" id="sweep-increment" value="">
            <button id="sweep-btn">Run</button>
        </div>

        <div class="columns">
            <div class="column">
                <h3>Setup</h3>
                <div class="control-row">
                    <label>aspect</label>
                    <select id="aspect-mode">
                        <option value="auto" selected>Auto</option>
                        <option value="landscape">Landscape</option>
                        <option value="portrait">Portrait</option>
                        <option value="square">Square</option>
                    </select>
                </div>
                <div id="setup-settings"></div>

                <h3>Throw</h3>
                <div class="control-row">
                    <label>type</label>
                    <select id="throw-type">
                        <option value="full" selected>Full</option>
                        <option value="gentle">Gentle</option>
                    </select>
                </div>
                <div id="throw-settings"></div>

                <h3>Air Resistance</h3>
                <div id="air-resistance-settings"></div>
            </div>
            <div class="column">
                <h3>Tray Interactions</h3>
                <div id="tray-settings"></div>

                <h3>Dice Collisions</h3>
                <div id="dice-collision-settings"></div>
            </div>
        </div>
    </div>

    <script src="dist/dice-roller.js"></script>
    <script>
        const SETTINGS = {
            gravity:          { min: -80, default: -50, max: -10, group: 'setup', tray: 'gravity', tip: 'Downward acceleration. Higher magnitude = faster settling.' },
            solverIterations: { min: 3, default: 10, max: 50, step: 1, group: 'setup', tray: 'solverIterations', tip: 'Collision resolution passes per frame. More = accurate but slower.' },
            sleepSpeedLimit:  { min: 0.01, default: 0.25, max: 1, group: 'setup', dice: 'sleepSpeedLimit', tip: 'Velocity below which die is considered stationary.' },
            sleepTimeLimit:   { min: 0.01, default: 0.05, max: 2, group: 'setup', dice: 'sleepTimeLimit', tip: 'How long die must be slow before sleeping.' },
            velocity:         { min: 0.2, default: 1, max: 3, group: 'throw', throw: 'velocityMultiplier', tip: 'Throw speed multiplier. 0.5 = half speed, 2 = double speed.' },
            linearDamping:    { min: 0, default: 0.5, max: 1, group: 'air', dice: 'linearDamping', tip: 'Air resistance for movement. 0 = slides forever, 1 = stops mid-air.' },
            angularDamping:   { min: 0, default: 0.9, max: 1, group: 'air', dice: 'angularDamping', tip: 'Air resistance for rotation. 0 = spins forever, 1 = stops instantly.' },
            floorFriction:    { min: 0, default: 0.6, max: 5, group: 'tray', tray: 'floorFriction', tip: 'Floor grip. 0 = ice, high = velcro.' },
            floorRestitution: { min: 0, default: 0.1, max: 1, group: 'tray', tray: 'floorRestitution', tip: 'Floor bounciness. 0 = thud, 1 = super ball.' },
            wallFriction:     { min: 0, default: 0.2, max: 5, group: 'tray', tray: 'wallFriction', tip: 'Wall grip. Affects whether dice slide or catch.' },
            wallRestitution:  { min: 0, default: 0.8, max: 1, group: 'tray', tray: 'wallRestitution', tip: 'Wall bounciness. Higher keeps dice moving inward.' },
            mass:             { min: 0.01, default: 10, max: 100, group: 'dice', dice: 'mass', tip: 'Resistance to acceleration in collisions. Heavier dice push lighter ones.' },
            diceRestitution:  { min: 0, default: 0.8, max: 1, group: 'dice', tray: 'diceRestitution', tip: 'Bounciness when dice hit each other.' },
            diceFriction:     { min: 0, default: 0.2, max: 5, group: 'dice', tray: 'diceFriction', tip: 'Grip between dice. Affects stacking behaviour.' },
        };

        const sliders = {};
        const valueDisplays = {};

        function buildControls() {
            const containers = {
                setup: document.getElementById('setup-settings'),
                throw: document.getElementById('throw-settings'),
                air: document.getElementById('air-resistance-settings'),
                tray: document.getElementById('tray-settings'),
                dice: document.getElementById('dice-collision-settings'),
            };
            const sweepSelect = document.getElementById('sweep-param');

            for (const [name, cfg] of Object.entries(SETTINGS)) {
                const container = containers[cfg.group];
                const row = document.createElement('div');
                row.className = 'control-row';

                const label = document.createElement('label');
                label.textContent = name;

                const help = document.createElement('span');
                help.className = 'help-icon';
                help.textContent = '?';
                help.dataset.tip = cfg.tip;

                const slider = document.createElement('input');
                slider.type = 'range';
                slider.min = cfg.min;
                slider.max = cfg.max;
                slider.step = cfg.step || (cfg.max - cfg.min) / 100;
                slider.value = cfg.default;

                const textInput = document.createElement('input');
                textInput.type = 'text';
                textInput.className = 'value';
                textInput.value = formatValue(cfg.default);

                slider.addEventListener('input', () => {
                    textInput.value = formatValue(parseFloat(slider.value));
                });

                textInput.addEventListener('change', () => {
                    const v = parseFloat(textInput.value);
                    if (!isNaN(v)) {
                        slider.value = v;
                        textInput.value = formatValue(v);
                    }
                });

                row.append(label, help, slider, textInput);
                container.appendChild(row);

                sliders[name] = slider;
                valueDisplays[name] = textInput;

                const opt = document.createElement('option');
                opt.value = name;
                opt.textContent = name;
                sweepSelect.appendChild(opt);
            }
        }

        function formatValue(v) {
            if (Math.abs(v) >= 10) return v.toFixed(1);
            if (Math.abs(v) >= 1) return v.toFixed(2);
            return v.toPrecision(2);
        }

        function getTrayConfig() {
            const cfg = { ...DiceRoller.DEFAULT_TRAY_CONFIG };
            for (const [name, def] of Object.entries(SETTINGS)) {
                if (def.tray) cfg[def.tray] = parseFloat(sliders[name].value);
            }
            return cfg;
        }

        function getDiceConfig() {
            const cfg = { ...DiceRoller.DEFAULT_DICE_CONFIG };
            for (const [name, def] of Object.entries(SETTINGS)) {
                if (def.dice) cfg[def.dice] = parseFloat(sliders[name].value);
            }
            return cfg;
        }

        function resetToDefaults() {
            for (const [name, cfg] of Object.entries(SETTINGS)) {
                sliders[name].value = cfg.default;
                valueDisplays[name].value = formatValue(cfg.default);
            }
            document.getElementById('aspect-mode').value = 'auto';
            document.getElementById('throw-type').value = 'full';
        }

        // Die creators
        const dieCreators = {
            4: DiceRoller.createD4,
            6: DiceRoller.createD6,
            8: DiceRoller.createD8,
            10: DiceRoller.createD10,
            12: DiceRoller.createD12,
            20: DiceRoller.createD20,
        };

        let currentStage = null;
        let currentSimulation = null;
        let rolling = false;
        let aborted = false;

        async function runRoll() {
            if (rolling) return;
            rolling = true;

            const trayEl = document.getElementById('tray');
            const throwType = document.getElementById('throw-type').value;
            const velocity = parseFloat(sliders.velocity.value);
            const slowmo = document.getElementById('slowmo').checked;

            // clean up previous...
            if (currentStage) {
                DiceRoller.removeDice(currentStage.physicsTray, currentStage);
                currentStage.renderer.dispose();
                trayEl.innerHTML = '';
            }

            // ...then create new tray with current settings
            const trayConfig = getTrayConfig();
            const diceConfig = getDiceConfig();
            const containerAspect = trayEl.clientWidth / trayEl.clientHeight;
            const aspectMode = document.getElementById('aspect-mode').value;
            let trayAspect;
            if (aspectMode === 'landscape') {
                trayAspect = 16 / 9;
            } else if (aspectMode === 'portrait') {
                trayAspect = 9 / 16;
            } else if (aspectMode === 'square') {
                trayAspect = 1;
            } else {
                trayAspect = containerAspect;
            }

            // camera shows the full container, tray fits within it
            const dieType = document.getElementById('die-select').value;
            const multiplier = parseInt(document.getElementById('dice-count').value);
            const baseCount = dieType === 'all' ? 6 : 1;
            const totalDice = baseCount * multiplier;
            const trayScale = totalDice <= 6 ? 10 : totalDice <= 24 ? 14 : 18;
            const containerDims = DiceRoller.getTrayDimensions(containerAspect, trayScale);

            // constrain tray to selected aspect while fitting in container
            let trayHalfWidth, trayHalfDepth;
            if (trayAspect > containerAspect) {
                // tray is wider than container - fit to width
                trayHalfWidth = containerDims.halfWidth;
                trayHalfDepth = trayHalfWidth / trayAspect;
            } else {
                // tray is taller than container - fit to height
                trayHalfDepth = containerDims.halfDepth;
                trayHalfWidth = trayHalfDepth * trayAspect;
            }

            // set camera to show full container area
            const physicsTray = DiceRoller.createTray(trayHalfWidth, trayHalfDepth, trayConfig);
            currentStage = DiceRoller.createStage(trayEl, physicsTray);
            DiceRoller.resizeCamera(currentStage, containerDims.halfWidth, containerDims.halfDepth);
            physicsTray.frameDelay = slowmo ? 5 : 1;

            // add tray outline
            const THREE = DiceRoller.THREE;
            const outlineGeometry = new THREE.BufferGeometry();
            const vertices = new Float32Array([
                -trayHalfWidth, 0.01, -trayHalfDepth,
                 trayHalfWidth, 0.01, -trayHalfDepth,
                 trayHalfWidth, 0.01,  trayHalfDepth,
                -trayHalfWidth, 0.01,  trayHalfDepth,
                -trayHalfWidth, 0.01, -trayHalfDepth,
            ]);
            outlineGeometry.setAttribute('position', new THREE.BufferAttribute(vertices, 3));
            const outlineMaterial = new THREE.LineBasicMaterial({ color: 0x666666 });
            const outlineLine = new THREE.Line(outlineGeometry, outlineMaterial);
            currentStage.scene.add(outlineLine);

            // create the dice
            const dieTypes = [];
            const types = dieType === 'all' ? [4, 6, 8, 10, 12, 20] : [parseInt(dieType)];
            for (let i = 0; i < multiplier; i++) {
                for (const type of types) {
                    dieTypes.push(type);
                }
            }
            const dice = [];
            for (let i = 0; i < dieTypes.length; i++) {
                const wrapper = await dieCreators[dieTypes[i]]();
                const die = wrapper.dice[0];
                const body = die.physics.body;

                body.mass = diceConfig.mass;
                body.linearDamping = diceConfig.linearDamping;
                body.angularDamping = diceConfig.angularDamping;
                body.sleepSpeedLimit = diceConfig.sleepSpeedLimit;
                body.sleepTimeLimit = diceConfig.sleepTimeLimit;
                body.updateMassProperties();

                dice.push(die);
            }

            const allPhysics = dice.map(d => d.physics);
            DiceRoller.packDice(allPhysics);

            // add dice to tray
            for (const die of dice) {
                physicsTray.world.addBody(die.physics.body);
                physicsTray.dice.push(die);
                currentStage.scene.add(die.mesh);
            }

            // position and throw using library code
            const whichSide = Math.random() < 0.5;
            DiceRoller.offsetToEdge(allPhysics, physicsTray, whichSide);

            const throwOptions = { velocityMultiplier: velocity };
            for (let i = 0; i < allPhysics.length; i++) {
                if (throwType === 'gentle') {
                    DiceRoller.applyGentleThrow(
                        allPhysics[i],
                        physicsTray,
                        whichSide,
                        throwOptions,
                    );
                } else {
                    DiceRoller.applyFullThrow(
                        allPhysics[i],
                        physicsTray,
                        whichSide,
                        i / Math.max(1, allPhysics.length - 1),
                        allPhysics.length,
                        throwOptions,
                    );
                }
                DiceRoller.syncDie(dice[i]);
            }

            // simulate
            currentSimulation = DiceRoller.simulateThrow(physicsTray, allPhysics, {
                rerollCocked: false,
                onStep: async () => {
                    dice.forEach(d => DiceRoller.syncDie(d));
                    await new Promise(r => requestAnimationFrame(r));
                }
            });
            await currentSimulation.result;
            currentSimulation = null;

            rolling = false;
        }

        async function runEndlessly() {
            document.getElementById('roll-btn').disabled = true;
            document.getElementById('stop-btn').disabled = false;
            aborted = false;
            while (!aborted) {
                await runRoll();
                if (aborted) break;
                await new Promise(r => setTimeout(r, 1000));
            }
            document.getElementById('roll-btn').disabled = false;
            document.getElementById('stop-btn').disabled = true;
        }

        async function runSweep() {
            const param = document.getElementById('sweep-param').value;
            if (!param) return;

            const from = parseFloat(document.getElementById('sweep-min').value);
            const to = parseFloat(document.getElementById('sweep-max').value);
            const step = Math.abs(parseFloat(document.getElementById('sweep-increment').value));

            if (isNaN(from) || isNaN(to) || isNaN(step) || step === 0) {
                alert('Invalid sweep parameters');
                return;
            }

            document.getElementById('roll-btn').disabled = true;
            document.getElementById('stop-btn').disabled = false;
            document.getElementById('sweep-btn').disabled = true;
            aborted = false;

            const direction = to >= from ? 1 : -1;
            const values = [];
            if (direction > 0) {
                for (let v = from; v <= to + step / 2; v += step) values.push(Math.min(v, to));
            } else {
                for (let v = from; v >= to - step / 2; v -= step) values.push(Math.max(v, to));
            }

            for (const value of values) {
                if (aborted) break;
                sliders[param].value = value;
                valueDisplays[param].value = formatValue(value);
                await runRoll();
            }

            document.getElementById('roll-btn').disabled = false;
            document.getElementById('stop-btn').disabled = true;
            document.getElementById('sweep-btn').disabled = false;
        }

        document.getElementById('sweep-param').addEventListener('change', (e) => {
            const p = e.target.value;
            if (p && SETTINGS[p]) {
                const cfg = SETTINGS[p];
                document.getElementById('sweep-min').value = cfg.min;
                document.getElementById('sweep-max').value = cfg.max;
                const range = cfg.max - cfg.min;
                const increment = cfg.step || range / 10;
                document.getElementById('sweep-increment').value = increment;
            }
        });

        buildControls();

        document.getElementById('roll-btn').addEventListener('click', runEndlessly);
        document.getElementById('stop-btn').addEventListener('click', () => {
            aborted = true;
            if (currentSimulation) currentSimulation.cancel();
        });
        document.getElementById('reset-btn').addEventListener('click', resetToDefaults);
        document.getElementById('sweep-btn').addEventListener('click', runSweep);
    </script>
</body>
</html>