constructor(sheet) {

    this.sheet = sheet;

    this.temp = sheet;

    this.wave = 4;

​

    this.wave_time = 60;

    this.down_time = 30;

    this.down = false;

​

    this.wave_max_timer = this.wave_time * 60;

    this.wave_timer = 0;

​

    this.down_max_timer = this.down_time * 60;

    this.down_timer = this.down_max_timer;

  }

​

  start() {

    if (this.down == false) {

      if (this.wave_timer < this.wave_max_timer) {

​

        if (this.temp[this.wave]) {

          for (let i = 0; i < this.temp[this.wave].length; i++) {

            if (this.wave_timer >= this.temp[this.wave][i].t*60) {

              for (let j = 0; j < this.temp[this.wave][i].x.length; j++) {

                let type = this.temp[this.wave][i].x[j];

                let a = random(360);

                let spawn_point = createVector(env.dimension.x / 2 + cos(a) * env.dimension.y * 0.8, env.dimension.y / 2 + sin(a) * env.dimension.y * 0.8);

                let obj = null;

                if (type == "s") {

                  obj = new Sumo(spawn_point.x, spawn_point.y, r, color(255, 0, 0), 200, 0.06);

                } else if (type == "f") {

                  obj = new Fighter(spawn_point.x, spawn_point.y, r, color(255, 0, 0), 100, 0.08);

                } else if (type == "j") {

                  obj = new Jet(spawn_point.x, spawn_point.y, r, color(255, 0, 0), 50, 0.1);

                }

​

                env.entities.push(obj);

              }

​

              this.temp[this.wave].splice(i, 1);

            }

          }

        }

        this.wave_timer++;

      } else {

        this.down_timer = 0;

        this.down = true;

      }

    } else {

      if (this.down_timer < this.down_max_timer) {

        this.down_timer++;

      } else {

        this.wave_timer = 0;

        this.wave++;

        env.player.hp = env.player.max_hp;

        env.opponent.hp = env.opponent.max_hp;

        this.down = false;

      }

    }

​

  }

}