Dream. Build. Launch.

import { Behavior, Vector2, syncedValue } from "@dreamlab/engine";

export default class BasicMovement extends Behavior {
  speed = 2;

  // register WASD inputs: Input ID, Human-readable Name, Default Binding
  #up = this.inputs.create("up", "Move Up", "KeyW");
  #down = this.inputs.create("down", "Move Down", "KeyS");
  #left = this.inputs.create("left", "Move Left", "KeyA");
  #right = this.inputs.create("right", "Move Right", "KeyD");

  #mouseDown = this.inputs.create("press", "Press to Move", "MouseLeft");

  clickToMoveTargetPos: Vector2 | undefined;

  onTick(): void {
    if (!this.hasAuthority()) return;
    let movement = new Vector2(0, 0);

    if (this.#up.held) movement.y += 1;
    if (this.#down.held) movement.y -= 1;
    if (this.#right.held) movement.x += 1;
    if (this.#left.held) movement.x -= 1;

    if (movement.eq(Vector2.ZERO) && this.#mouseDown.pressed && this.inputs.cursor.world) {
      // no movement from keyboard, move using pointer
      this.clickToMoveTargetPos = this.inputs.cursor.world;
    }

    if (this.clickToMoveTargetPos) {
      movement = this.clickToMoveTargetPos.sub(this.entity.pos);
      // don't normalize when magnitude is less than speed, prevents overshooting target
      if (movement.magnitude() > this.speed) movement = movement.normalize().mul(this.speed);
      // we reached the target
      if (movement.magnitude() === 0) this.clickToMoveTargetPos = undefined;
    } else {
      movement = movement.normalize().mul(this.speed);
    }

    const newPosition = this.entity.pos.add(movement);
    // Bounds: prevent player from moving more than 20 units from origin
    if (Math.abs(newPosition.x) > 20) movement.x = 0;
    if (Math.abs(newPosition.y) > 20) movement.y = 0;
    this.entity.pos = this.entity.pos.add(movement);
  }
}