CINC/objects/Unit.js

export default class Unit extends Phaser.Physics.Arcade.Sprite {
  constructor(scene, x, y, texture) {
    super(scene, x, y, texture);
    scene.add.existing(this);
    scene.physics.add.existing(this);
    this.setCollideWorldBounds(true);
  }

  moveTo(targetX, targetY) {
    this.scene.physics.moveToObject(this, {x: targetX, y: targetY}, 200);
  }

  moveRelative(dirX, dirY, speed = 100) {
    this.setVelocity(dirX * speed, dirY * speed);
  }
}