James Ball

How Do You Do, Fellow Kids?

Phaser 3: Space Shooter

Play here

game.js
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class Group extends Phaser.GameObjects.Group
{

  constructor(scene, x, y, key)
  {
      super(scene, x, y, key);

      this.scene = scene;

      if (this.scene)
      {
          this.scene.physics.world.enable(this);
          this.scene.add.existing(this);
      }
  }

  *[Symbol.iterator]()
  {
      if (this.getChildren())
      {
          for (let i = 0; i < this.getChildren().length; i++)
          {
              yield this.getChildren()[i];
          }
      }
  }

  update(time, delta)
  {
      for (let child of this)
      {
          if (child.update)
          {
              child.update(time, delta);
          }
      }
  }

  set(key=undefined, value=undefined, defaults=undefined)
  {
      if (value === undefined)
      {
          return defaults;
      }
      else
      {
          this[key] = value;

          return this[key];
      }
  }

  patch()
  {
      if (this.scene.ship)
      {
          this.scene.physics.add.collider(this.scene.ship, this.getChildren(), this.scene.ship.collideShipEnemy, null, this.scene.ship);

          if (this.scene.ship.bullets)
          {
              this.scene.physics.add.collider(this.scene.ship.bullets, this.getChildren(), this.scene.ship.collideBulletEnemy, null, this.scene.ship);
          }

          for (let child of this)
          {
              this.scene.physics.add.collider(this.scene.ship, child, this.scene.ship.collideShipEnemy, null, this.scene.ship);

              if (this.scene.ship.bullets && child.shootable)
              {
                  this.scene.physics.add.collider(this.scene.ship.bullets, child, this.scene.ship.collideBulletEnemyBullet, null, this.scene.ship);
              }

              if (child.projectile)
              {
                  this.scene.physics.add.collider(this.scene.ship, child.projectile, this.scene.ship.collideShipEnemy, null, this.scene.ship);
              }
          }
      }

      return this;
  }

  done()
  {
      return this.getChildren().length === 0;
  }

  getChildrenHead()
  {
      return this.getChildren()[this.getChildren().length - 1];
  }

}

export default Group;