gistlib - make a game using svelt in javascript

To make a game using Svelte in JavaScript, follow these steps:

Set up a new Svelte project using the Svelte template.


index.tsx
npx degit sveltejs/template my-svelte-game
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Install any libraries or dependencies you need for your game. For example, you might use PIXI.js for rendering graphics, or Howler.js for playing sound effects.


index.tsx
npm install pixi.js
npm install howler
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Create your game components in Svelte. These might include a game board, player characters, enemies, and other objects. Use Svelte's reactive state management to update the display when game objects change.


<script>
  import { onMount } from 'svelte';

  let score = 0;

  let gameObjects = [
    { type: 'player', xPos: 0, yPos: 0 },
    { type: 'enemy', xPos: 100, yPos: 100 },
  ];

  onMount(() => {
    // Initialize the game here
  });
</script>

<div class="game-board">
  {#each gameObjects as object}
    <GameSprite type={object.type} xPos={object.xPos} yPos={object.yPos} />
  {/each}

  <h2>Score: {score}</h2>
</div>
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Create helper functions and event handlers for your game logic. These might include functions for moving game objects, checking for collisions, and updating the game state.


<script>
  import { onMount } from 'svelte';

  let score = 0;

  let gameObjects = [
    { type: 'player', xPos: 0, yPos: 0 },
    { type: 'enemy', xPos: 100, yPos: 100 },
  ];

  function movePlayer(direction) {
    let player = gameObjects.find(obj => obj.type === 'player');
    switch (direction) {
      case 'left':
        player.xPos -= 10;
        break;
      case 'right':
        player.xPos += 10;
        break;
      case 'up':
        player.yPos -= 10;
        break;
      case 'down':
        player.yPos += 10;
        break;
    }
  }

  function checkCollisions() {
    // Check for collisions between objects here
  }

  function updateScore(points) {
    score += points;
  }

  onMount(() => {
    // Initialize the game here
  });
</script>

<div class="game-board">
  {#each gameObjects as object}
    <GameSprite type={object.type} xPos={object.xPos} yPos={object.yPos} />
  {/each}

  <h2>Score: {score}</h2>
</div>

<div class="game-controls">
  <button on:click={() => movePlayer('left')}>Left</button>
  <button on:click={() => movePlayer('right')}>Right</button>
  <button on:click={() => movePlayer('up')}>Up</button>
  <button on:click={() => movePlayer('down')}>Down</button>
</div>
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Add any necessary styles and animations using CSS. Use Svelte's class: directive to apply CSS classes conditionally based on game state.


<style>
  .game-board {
    position: relative;
    height: 500px;
    width: 500px;
    margin: 0 auto;
    background: #efefef;
  }

  h2 {
    font-size: 24px;
    text-align: center;
  }

  .game-controls {
    display: flex;
    justify-content: center;
    margin-top: 20px;
  }

  .player {
    position: absolute;
    height: 50px;
    width: 50px;
    background: blue;
    top: {yPos}px;
    left: {xPos}px;
  }

  .enemy {
    position: absolute;
    height: 50px;
    width: 50px;
    background: red;
    top: {yPos}px;
    left: {xPos}px;
  }
</style>
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Finally, test your game and refine it as needed. Add more game mechanics, sound effects, and graphics to improve the user experience. Have fun!

Note: This is just a rough outline of what's involved in making a game using Svelte in JavaScript. Actual projects will be more complex and require more detailed knowledge of these technologies.

make a game using svelt in javascript

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