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edbentley/replay: A cross-platform JS game engine inspired by React

原作者: [db:作者] 来自: 网络 收藏 邀请

开源软件名称：

edbentley/replay

开源软件地址：

https://github.com/edbentley/replay

开源编程语言：

TypeScript 74.8%

开源软件介绍：

Replay

Replay is a cross-platform JavaScript game engine inspired by React.

Its declarative API goes against the grain of typical game engines. It's small yet powerful, giving you total control on how your game runs. With a great testing library built in, Replay is ideal for writing bug-free games.

Build your game once and deploy it for web, iOS and Android.

Tutorial · Docs · Blog · Games

⚠️ Status

Replay is still in early development and will go through many breaking changes. However we encourage you to start making games now - your feedback will help shape Replay's future!

Quick Setup

Create a file, copy this in and open it in a browser:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <!-- Load Replay through a CDN -->
  <script src="https://unpkg.com/@replay/[email protected]/umd/replay-core.min.js"></script>
  <script src="https://unpkg.com/@replay/[email protected]/umd/replay-web.min.js"></script>
  <title>Replay Game</title>
</head>
<body>
<script>

// Import from Replay
const { makeSprite, t } = replay;
const { renderCanvas } = replayWeb;

// Setup game size
const gameProps = {
  id: "Game",
  size: {
    landscape: {
      width: 600,
      height: 400,
      maxWidthMargin: 150,
    },
    portrait: {
      width: 400,
      height: 600,
      maxHeightMargin: 150,
    },
  },
  defaultFont: {
    family: "Courier",
    size: 10,
  },
};

// Create a Game Sprite
const Game = makeSprite({
  init() {
    // Our initial state
    return {
      posX: 0,
      posY: 0,
      targetX: 0,
      targetY: 0,
    };
  },

  // This is run 60 times a second. Returns next frame's state.
  loop({ state, getInputs }) {
    const { pointer } = getInputs();
    const { posX, posY } = state;
    let { targetX, targetY } = state;

    // Update our target when the mouse is clicked
    if (pointer.justPressed) {
      targetX = pointer.x;
      targetY = pointer.y;
    }

    return {
      // Update our position to move closer to target over time
      posX: posX + (targetX - posX) / 10,
      posY: posY + (targetY - posY) / 10,
      targetX,
      targetY,
    };
  },

  // Render Textures based on game state
  render({ state }) {
    return [
      t.text({
        color: "red",
        text: "Hello Replay!",
        y: 50,
      }),
      t.circle({
        x: state.posX,
        y: state.posY,
        color: "#147aff",
        radius: 10,
      }),
    ];
  },
});

// Render in the browser using canvas
renderCanvas(Game(gameProps), { dimensions: "scale-up" });

</script>
</body>
</html>

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