#include "std_lib_inc.h"
#include "Player.h"
#include "Maze.h"
#include "Exceptions/MovementNotPossible.h"

using game_exceptions::MovementNotPossible;

namespace game
{
  Player::Player(const int target_x, const int target_y): pos(target_x, target_y), keys_in_inventory(0)
  {
  }

  Player::Player(const PositionVector pos) : pos(pos), keys_in_inventory(0)
  {
  }

  PositionVector Player::get_pos() const
  {
    return this->pos;
  }

  void Player::update_position(const PositionVector& target)
  {
    this->pos = target;
  }


  Maze Player::move(Maze& maze, const PositionVector& move_vector)
  {
    const PositionVector target_position = PositionVector(this->get_pos().x + move_vector.x,
                                                          this->get_pos().y + move_vector.y);

    if (maze.is_pos_free(target_position, this->has_key_available()))
    {
      this->update_position(target_position);

      switch (maze.get_field(target_position))
      {
      case 'K':
        ++this->keys_in_inventory;
        maze.update_field(target_position, '.');
        break;
      case 'T':
        --this->keys_in_inventory;
        maze.update_field(target_position, '.');
        break;
      default: ;
      }
    }
    else
      throw MovementNotPossible("Bewegung nicht moeglich!");
    return maze;
  }

  bool Player::has_key_available() const
  {
    return this->keys_in_inventory > 0;
  }
} // game