用代码实现游戏应用中连续按键触发必杀技的监测方法

Answer 1

const skills = [
  {
    keys: ['ArrowUp', 'ArrowUp', 'ArrowDown', 'ArrowDown', 'ArrowLeft', 'ArrowRight', 'ArrowLeft', 'ArrowRight', 'b', 'a'],
    cd: 10,
    skillsCheckProgress: 0,
    skillsLastFire: 0,
  }
]

window.onkeydown = (key) => {
  for (let i = 0; i < skills.length; i++) {
    let skill = skills[i];
    if (key.key === skill.keys[skill.skillsCheckProgress]) {
      skill.skillsCheckProgress++;
    } else {
      skill.skillsCheckProgress = 0;
    }
    let now = new Date().getTime();
    if (skill.skillsCheckProgress === skill.keys.length
      && (now - skill.skillsLastFire) > (skill.cd * 1000)) {
      skills.skillsCheckProgress = 0;
      skills.skillsLastFire = now;
      console.log('fire');
    }
  }
}