hytopia/examples/zombies-fps/assets/ui/index.html

The HYTOPIA SDK makes it easy for developers to create massively multiplayer games using JavaScript or TypeScript.

<!-- Fonts-->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Creepster&display=swap" rel="stylesheet">

<!-- UI-->
<div class="boss-health-container">
  <div class="boss-name"></div>
  <div class="boss-health-bar">
    <div class="boss-health-fill"></div>
  </div>
</div>

<div class="crosshair"></div>
<div class="vignette"></div>
<div class="wave-announcement">Wave <span class="wave-number"></span></div>

<div class="game-info">
  <div class="timer">Time: 00:00</div>
  <div class="wave">Wave: 1</div>
</div>

<div class="hud">
  <div class="weapon-info">
    <div class="weapon-text">
      <div class="weapon-name">Pistol</div>
      <div class="weapon-ammo">Clip: 7/7</div>
    </div>
    <img src="" alt="Current Weapon" class="weapon-image">
  </div>
  
  <div class="info-container">
    <div class="money-display">
      <span class="money-symbol">$</span>
      <span class="money-amount">0</span>
    </div>
    <div class="health-bar">
      <div class="health-bar-fill"></div>
      <img src="{{CDN_ASSETS_URL}}/icons/heart.png" alt="Health Icon" class="health-icon">
      <div class="health-text">100/100</div>
    </div>
  </div>
</div>

<template id="downed-player-template">
    <div class="downed-player">
        <div class="revive-text">Downed Player!</div>
        <div class="revive-prompt">Hold "E" to revive, stay close!</div>
        <div class="revive-progress">
          <div class="revive-progress-fill"></div>
        </div>
        <div class="label-caret"></div>
    </div>
</template>

<template id="purchase-label-template">
    <div class="purchase-label">
      <div class="label-name"></div>
      <div class="label-cost"></div>
      <div class="label-prompt">Press "E" to purchase</div>
      <div class="label-caret"></div>
    </div>
</template>

<template id="weapon-roulette-template">
    <div class="weapon-roulette">
      <img class="roulette-image" src="{{CDN_ASSETS_URL}}/icons/pistol.png" alt="Weapon">
      <div class="roulette-name"></div>
      <div class="roulette-prompt">Press "E" to equip</div>
    </div>
</template>

<!-- UI Scripts-->
<script>
  const CDN_ASSETS_URL = '{{CDN_ASSETS_URL}}';
  let timerInterval;

  hytopia.registerSceneUITemplate('downed-player', (id, onState) => {
    const template = document.getElementById('downed-player-template');
    const clone = template.content.cloneNode(true);
    const progressFill = clone.querySelector('.revive-progress-fill');

    onState(state => {
      progressFill.style.width = `${state.progress}%`;
    });

    return clone;
  });

  // register purchase label template
  hytopia.registerSceneUITemplate('purchase-label', (id, onState) => {
    const template = document.getElementById('purchase-label-template');
    const clone = template.content.cloneNode(true);
    const labelName = clone.querySelector('.label-name');
    const labelCost = clone.querySelector('.label-cost');

    onState(state => {
      labelName.textContent = state.name;
      labelCost.textContent = `$${state.cost}`;
    });

    return clone;
  });

  // register weapon roulette template
  hytopia.registerSceneUITemplate('weapon-roulette', (id, onState) => {
    const template = document.getElementById('weapon-roulette-template');
    const clone = template.content.cloneNode(true);
    const rouletteImage = clone.querySelector('.roulette-image');
    const rouletteName = clone.querySelector('.roulette-name');
    const roulettePrompt = clone.querySelector('.roulette-prompt');
    let rouletteInterval;

    // Hide prompt initially
    roulettePrompt.style.display = 'none';

    onState(state => {
      const { selectedWeaponId, possibleWeapons } = state;
      let currentIndex = 0;

      // Clear any existing interval
      if (rouletteInterval) {
        clearInterval(rouletteInterval);
      }

      // Start rapid weapon cycling
      rouletteInterval = setInterval(() => {
        const weapon = possibleWeapons[currentIndex];
        rouletteImage.src = `${CDN_ASSETS_URL}/${weapon.iconUri}`;
        console.log(rouletteImage.src);
        rouletteName.textContent = weapon.name;
        currentIndex = (currentIndex + 1) % possibleWeapons.length;
      }, 100);

      // After 2 seconds, stop on selected weapon and show prompt
      setTimeout(() => {
        clearInterval(rouletteInterval);
        const selectedWeapon = possibleWeapons.find(w => w.id === selectedWeaponId);
        if (selectedWeapon) {
          rouletteImage.src = `${CDN_ASSETS_URL}/${selectedWeapon.iconUri}`;
          rouletteName.textContent = selectedWeapon.name;
          roulettePrompt.style.display = 'block';
        }
      }, 3000);
    });

    return clone;
  });

  // handle game data ui updates
  hytopia.onData(data => {
    const { type } = data;

    if (!type) {
      return console.warn('No type received for data', data);
    }

    if (type === 'start') {
      document.querySelector('.game-info').style.display = 'block';
      document.querySelector('.game-info .timer').textContent = 'Time: 00:00';
      document.querySelector('.game-info .wave').textContent = 'Wave: 1';
      
      // Clear previous timer
      if (timerInterval) {
        clearInterval(timerInterval);
      }

      // Start game timer
      const startTime = Date.now();
      timerInterval = setInterval(() => {
        const elapsedSeconds = Math.floor((Date.now() - startTime) / 1000);
        const minutes = Math.floor(elapsedSeconds / 60).toString().padStart(2, '0');
        const seconds = (elapsedSeconds % 60).toString().padStart(2, '0'); 
        document.querySelector('.game-info .timer').textContent = `Time: ${minutes}:${seconds}`;
      }, 1000);
    }

    if (type === 'wave') {
      const { wave } = data;
      document.querySelector('.game-info .wave').textContent = `Wave: ${wave}`;
      showWaveAnnouncement(wave);
    }

    if (type === 'weapon') {
      const { name, iconImageUri } = data;
      document.querySelector('.weapon-name').textContent = name;
      document.querySelector('.weapon-image').src = `${CDN_ASSETS_URL}/${iconImageUri}`;
    }

    if (type === 'ammo') {
      const { ammo, maxAmmo } = data;
      document.querySelector('.weapon-ammo').textContent = `CLIP: ${ammo}/${maxAmmo}`;
    }

    if (type === 'health') {
      const { health, maxHealth } = data;
      const percentage = (health / maxHealth) * 100;
      document.querySelector('.health-bar-fill').style.width = `${percentage}%`;
      document.querySelector('.health-text').textContent = `${health}/${maxHealth}`;
      
      // Update vignette intensity based on health percentage
      const vignette = document.querySelector('.vignette');
      const vignetteOpacity = Math.max(0, (100 - percentage) / 100);
      vignette.style.opacity = vignetteOpacity;
    }

    if (type === 'reload') {
      document.querySelector('.weapon-ammo').textContent = 'RELOADING...';
    }

    if (type === 'money') {
      const { money } = data;
      const moneyAmount = Math.floor(money);
      const moneyDisplay = document.querySelector('.money-display');
      const moneyAmountEl = document.querySelector('.money-amount');
      
      moneyAmountEl.textContent = moneyAmount;
      // Adjust width based on number of digits (min 2 digits, max 8 digits)
      const digits = Math.max(2, Math.min(8, moneyAmount.toString().length));
      moneyDisplay.style.width = `${10 + (digits * 10)}px`;
    }

    if (type === 'boss') {
      const { name, healthPercent, show } = data;
      const bossContainer = document.querySelector('.boss-health-container');
      const bossName = document.querySelector('.boss-name');
      const bossHealthFill = document.querySelector('.boss-health-fill');
      console.log(data);
      if (show === true) {
        bossContainer.style.display = 'block';
      } else if (show === false) {
        bossContainer.style.display = 'none';
        bossHealthFill.style.width = '100%';
      }

      if (name) {
        bossName.textContent = name;
      }

      if (healthPercent) {
        bossHealthFill.style.width = `${healthPercent}%`;
      }
    }
  });

  function showWaveAnnouncement(waveNumber) {
    const announcement = document.querySelector('.wave-announcement');
    const numberSpan = announcement.querySelector('.wave-number');
    numberSpan.textContent = waveNumber;
    announcement.classList.add('show');
    setTimeout(() => {
      announcement.classList.remove('show');
    }, 3000);
  }
</script>

<!-- UI Styles -->
<style>
  .boss-health-container {
    display: none;
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    text-align: center;
  }

  .boss-name {
    color: #ffffff;
    font-family: 'Arial', sans-serif;
    font-size: 24px;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    margin-bottom: 5px;
    text-transform: uppercase;
  }

  .boss-health-bar {
    width: 100%;
    height: 10px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 3px;
    overflow: hidden;
    box-shadow: 0 0 10px rgba(255, 0, 0, 0.3);
  }

  .boss-health-fill {
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, #800000, #ff0000);
    transition: width 0.3s ease;
  }

  .game-info {
    display: none;
    position: fixed;
    top: 20px;
    right: 20px;
  }

  .game-info div {
    font-family: 'Arial', sans-serif;
    font-size: 1em;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    color: #ffffff;
    text-align: right;
    margin-bottom: 5px;
  }


  .hud {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    z-index: 99;
    gap: 10px;
    font-family: 'Arial', sans-serif;
    text-transform: uppercase;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  }

  .vignette {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    background: radial-gradient(circle, transparent 30%, rgba(255, 0, 0, 0.6));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 9;
  }

  .info-container {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .money-display {
    height: 20px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 3px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    font-weight: bold;
    font-size: 0.9em;
    width: 30px; /* Initial width for 2 digits */
    transition: width 0.3s ease;
    white-space: nowrap;
  }

  .money-symbol {
    color: #44ff44;
    margin-right: 4px;
  }

  .health-bar {
    width: 200px;
    height: 20px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 3px;
    overflow: hidden;
    box-shadow: 0 0 10px rgba(255, 0, 0, 0.3);
    position: relative;
  }

  .health-bar-fill {
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, #ff0000, #ff3333);
    transition: width 0.3s ease;
  }

  .health-icon {
    position: absolute;
    left: 5px;
    top: 50%;
    transform: translateY(-50%);
    height: 16px;
    width: 16px;
    z-index: 1;
  }

  .health-text {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.8em;
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
    z-index: 1;
  }

  .weapon-info {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
  }

  .weapon-text {
    text-align: right;
  }

  .weapon-name {
    font-size: 1em;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  }

  .weapon-ammo {
    font-size: 0.8em;
    opacity: 0.9;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
  }

  .weapon-image {
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 3px;
    width: 50px;
    height: 50px;
    object-fit: contain;
  }

  .crosshair {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    pointer-events: none;
    opacity: 0.7;
  }

  .crosshair::before,
  .crosshair::after {
    content: '';
    position: absolute;
    background-color: rgba(255, 255, 255, 0.8);
  }

  .crosshair::before {
    width: 2px;
    height: 100%;
    left: 50%;
    transform: translateX(-50%);
  }

  .crosshair::after {
    width: 100%;
    height: 2px;
    top: 50%;
    transform: translateY(-50%);
  }

  .purchase-label {
    background-color: rgba(0, 0, 0, 0.9);
    padding: 12px 20px;
    border-radius: 4px;
    text-align: center;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    font-family: 'Arial', sans-serif;
    text-transform: uppercase;
    position: relative;
    width: 220px;
    margin: 0 auto;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.2);
  }

  .label-name {
    font-size: 20px;
    margin-bottom: 6px;
    font-weight: bold;
  }

  .label-cost {
    font-size: 16px;
    margin-bottom: 6px;
    color: #44ff44;
  }

  .label-prompt {
    font-size: 14px;
    opacity: 0.8;
  }

  .label-caret {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid rgba(0, 0, 0, 0.7);
  }

  .weapon-roulette {
    background-color: rgba(0, 0, 0, 0.9);
    padding: 20px;
    border-radius: 4px;
    text-align: center;
    position: relative;
    margin: 0 auto;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.2);
    color: #ffffff;
    font-family: 'Arial', sans-serif;
    text-transform: uppercase;
  }

  .roulette-image {
    width: 100px;
    height: 100px;
    object-fit: contain;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    padding: 10px;
    margin-bottom: 10px;
  }

  .roulette-name {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 8px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  }

  .roulette-prompt {
    font-size: 12px;
    opacity: 0.8;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
  }

  .downed-player {
    background-color: rgba(0, 0, 0, 0.9);
    padding: 12px 20px;
    border-radius: 4px;
    text-align: center;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    font-family: 'Arial', sans-serif;
    text-transform: uppercase;
    width: 220px;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.2);
    position: relative;
  }

  .revive-text {
    font-size: 16px;
    margin-bottom: 8px;
    font-weight: bold;
    color: #ff4444;
  }

  .revive-prompt {
    font-size: 14px;
    opacity: 0.8;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
    margin-bottom: 8px;
  }

  .revive-progress {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
  }

  .revive-progress-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(to right, #44ff44, #88ff88);
    transition: width 0.3s ease;
  }

  .wave-announcement {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    font-family: "Creepster", serif;
    font-weight: 400;
    font-style: normal;    font-size: 72px;
    color: #ff0000;
    text-shadow: 0 0 20px rgba(255, 0, 0, 0.8);
    opacity: 0;
    transition: transform 0.5s ease, opacity 0.5s ease;
    pointer-events: none;
    z-index: 1000;
  }

  .wave-announcement.show {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
    animation: pulseAndFade 3s ease-out forwards;
  }

  @keyframes pulseAndFade {
    0% {
      transform: translate(-50%, -50%) scale(0);
      opacity: 0;
    }
    20% {
      transform: translate(-50%, -50%) scale(1.2);
      opacity: 1;
    }
    40% {
      transform: translate(-50%, -50%) scale(1);
      opacity: 1;
    }
    80% {
      transform: translate(-50%, -50%) scale(1);
      opacity: 1;
    }
    100% {
      transform: translate(-50%, -50%) scale(0.8);
      opacity: 0;
    }
  }
</style>