Method on

src/shared/utils/inputManager.ts:9–15

(eventName: string, listener: Function)

  }

  on(eventName: string, listener: Function) {
    if (!this.events[eventName]) {
      this.events[eventName] = [];
    }

    this.events[eventName].push(listener);
  }

  off(eventName: string, listener: Function) {
    const listeners = this.events[eventName];