<!-- import library -->
<script src="./build/bulletml.js"></script>
<script>
window.onload = async () => {
// load xml file
const res = await fetch(url);
const xml = await res.text();
// parse
const bulletml = BulletML.parse(xml);
// player
const player = { x: 0, y: 0 };
// create manager
const manager = new BulletML.Manager({ player });
// enemy
const enemy = new BulletML.Bullet();
// run
manager.run(enemy, bulletml);
const bullets = [];
// on fire bullet
manager.onFire = (params) => {
const { bullet } = params;
console.log(`${ bullet.x }, ${ bullet.y }`);
// on execute <vanish> tag
bullet.onVanish = () => {
doVanishProcess();
};
bullets.push(bullet);
};
let last = Date.now();
const loop = () => {
requestAnimationFrame(loop);
const now = Date.now();
const deltaTime = now - last;
last = now;
// update 1 frame
manager.update(deltaTime);
bullets.forEach((bullet) => {
if (isOutOfScreen(bullet)) {
// delete bullet
bullet.destroy();
}
});
};
loop();
};
</script>