plugin-joystick/samples/04-position-bottom.html at main · litecanvas/plugin-joystick · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta
      name="viewport"
      content="width=device-width,
    user-scalable=no, initial-scale=1, maximum-scale=1, user-scalable=0"
    />
    <title>litecanvas Game</title>
    <style type="text/css">
      body {
        background: #000;
        margin: 0;
      }
    </style>
  </head>
  <body>
    <script src="https://unpkg.com/litecanvas"></script>
    <script src="../dist/dist.js"></script>
    <script>
      let actor

      litecanvas({
        width: 640,
      })

      function init() {
        use(pluginJoystick, {
          opacityInactive: 0.2,
          position: [0.5, 0.9],
        })

        actor = {
          x: W / 2,
          y: H / 2,
          speed: 100,
        }
      }

      function update(dt) {
        if (joystick.on) {
          const { angle, force } = joystick
          actor.x += actor.speed * force * cos(angle) * dt
          actor.y += actor.speed * force * sin(angle) * dt
        }
      }

      function draw() {
        cls(0)
        circfill(actor.x, actor.y, 32, 3)
      }
    </script>
  </body>
</html>