import 'dart:math';
import 'maze.dart';

class Player {
  double x;
  double y;
  double angle;
  static const double moveSpeed = 0.05;
  static const double rotSpeed = 0.04;

  Player({required this.x, required this.y, this.angle = 0});

  void moveForward(Maze maze) {
    _tryMove(maze, cos(angle) * moveSpeed, sin(angle) * moveSpeed);
  }

  void moveBackward(Maze maze) {
    _tryMove(maze, -cos(angle) * moveSpeed, -sin(angle) * moveSpeed);
  }

  void strafeLeft(Maze maze) {
    _tryMove(maze, cos(angle - pi / 2) * moveSpeed, sin(angle - pi / 2) * moveSpeed);
  }

  void strafeRight(Maze maze) {
    _tryMove(maze, cos(angle + pi / 2) * moveSpeed, sin(angle + pi / 2) * moveSpeed);
  }

  void rotateLeft() {
    angle -= rotSpeed;
  }

  void rotateRight() {
    angle += rotSpeed;
  }

  void _tryMove(Maze maze, double dx, double dy) {
    const margin = 0.2;
    final nx = x + dx;
    final ny = y + dy;
    if (!maze.isWall((nx + margin).toInt(), y.toInt()) &&
        !maze.isWall((nx - margin).toInt(), y.toInt())) {
      x = nx;
    }
    if (!maze.isWall(x.toInt(), (ny + margin).toInt()) &&
        !maze.isWall(x.toInt(), (ny - margin).toInt())) {
      y = ny;
    }
  }
}