package me.srvstr.bot;

import me.srvstr.objects.WorldObject;

import java.awt.*;
import java.awt.geom.Point2D;

public class Gytebot extends WorldObject {

  private static final float RCP_FORCE_DAMPING = 8.0F;
  private Direction direction;
  private Point2D.Float velocity;
  private float angleVelocity;
  private float viewAngle;
  private boolean isReady;

  public Gytebot(Point2D.Float position, Direction direction) {
    super(position);

    this.direction = direction;
    this.velocity = new Point2D.Float();

    convertDirectionToAngle(direction);
  }

  public Gytebot(Gytebot gytebot) {
    super(new Point2D.Float());

    if (gytebot != null) {
      this.direction = gytebot.getDirection();
      this.viewAngle = gytebot.getViewAngle();
      this.angleVelocity = gytebot.getViewAngleVelocity();
      this.position.x = (gytebot.getPosition()).x;
      this.position.y = (gytebot.getPosition()).y;
    }
  }

  private float getViewAngleVelocity() {
    return this.angleVelocity;
  }

  public void updateRotation(float elapsedTime) {
    this.viewAngle += this.angleVelocity * elapsedTime * Gytebot.RCP_FORCE_DAMPING;
    this.angleVelocity += -this.angleVelocity * elapsedTime * Gytebot.RCP_FORCE_DAMPING;

    this.position.x += this.velocity.x * elapsedTime * Gytebot.RCP_FORCE_DAMPING;
    this.position.y += this.velocity.y * elapsedTime * Gytebot.RCP_FORCE_DAMPING;

    this.velocity.x += -this.velocity.x * elapsedTime * Gytebot.RCP_FORCE_DAMPING;
    this.velocity.y += -this.velocity.y * elapsedTime * Gytebot.RCP_FORCE_DAMPING;

    this.isReady = (FloatUtils.isZeroWithTolerance(this.angleVelocity)
        && FloatUtils.isZeroWithTolerance(this.velocity.x) && FloatUtils.isZeroWithTolerance(this.velocity.y));
  }

  public void turnRight() {
    switch (this.direction) {
      case NORTH:
        this.direction = Direction.WEST;
        break;
      case WEST:
        this.direction = Direction.SOUTH;
        break;
      case SOUTH:
        this.direction = Direction.EAST;
        break;
      case EAST:
        this.direction = Direction.NORTH;
        break;
      default:
        break;
    }

    this.angleVelocity = 1.5707964F;
    this.isReady = false;
  }

  public void turnLeft() {
    switch (this.direction) {
      case NORTH:
        this.direction = Direction.EAST;
        break;
      case EAST:
        this.direction = Direction.SOUTH;
        break;
      case SOUTH:
        this.direction = Direction.WEST;
        break;
      case WEST:
        this.direction = Direction.NORTH;
      default:
        break;
    }

    this.angleVelocity = -1.5707964F;

    this.isReady = false;
  }

  private void convertDirectionToAngle(Direction direction) {
    switch (direction) {
      case NORTH:
        this.viewAngle = 1.5707964F;
        break;
      case SOUTH:
        this.viewAngle = -1.5707964F;
        break;
      case EAST:
        this.viewAngle = 0.0F;
        break;
      case WEST:
        this.viewAngle = 3.1415927F;
      default:
        break;
    }

  }

  public void goForward() {
    switch (this.direction) {
      case NORTH:
        this.velocity = new Point2D.Float(0.0F, -1.0F);
        break;
      case SOUTH:
        this.velocity = new Point2D.Float(0.0F, 1.0F);
        break;
      case EAST:
        this.velocity = new Point2D.Float(-1.0F, 0.0F);
        break;
      case WEST:
        this.velocity = new Point2D.Float(1.0F, 0.0F);
        break;
      default:
        this.velocity = new Point2D.Float();
        break;
    }

    this.isReady = false;
  }

  public Point getForwardLocation() {
    switch (this.direction) {
      case NORTH:
        return new Point(Math.round(this.position.x), Math.round(this.position.y) - 1);
      case SOUTH:
        return new Point(Math.round(this.position.x), Math.round(this.position.y) + 1);
      case EAST:
        return new Point(Math.round(this.position.x) - 1, Math.round(this.position.y));
      case WEST:
        return new Point(Math.round(this.position.x) + 1, Math.round(this.position.y));
      default:
        break;
    }
    return null;
  }

  public final Direction getDirection() {
    return this.direction;
  }

  public final float getViewAngle() {
    return this.viewAngle;
  }

  public boolean isReady() {
    return this.isReady;
  }
}