package main

import (
  "slices"
)

func compass(near Position, offset int) []Position {
  return []Position{
    Position{near.X, near.Y - offset},
    Position{near.X, near.Y + offset},
    Position{near.X + offset, near.Y},
    Position{near.X - offset, near.Y},
  }
}

func (game *Game) CloneMap() Map {
  // this is a shallow copy though
  new_map := slices.Clone(game.Level)

  for i, row := range new_map {
    // this makes sure the row is an actual copy
    new_map[i] = slices.Clone(row)
  }

  return new_map
}

func (game *Game) Inbounds(pos Position, offset int) bool {
  return pos.X >= offset &&
    pos.X < game.Width - offset &&
    pos.Y >= offset &&
    pos.Y < game.Height - offset
}

func (game *Game) Occupied(pos Position) bool {
  is_player := pos == game.Player.Pos

  // Inbounds comes first to prevent accessing level with bad x,y
  return !game.Inbounds(pos, 1) ||
      game.Level[pos.Y][pos.X] == WALL ||
      is_player
}

func (game *Game) FillMap(target Map, setting rune) {
  for y := 0 ; y < game.Height; y++ {
    target[y] = slices.Repeat([]rune{setting}, game.Width)
  }
}


func (game *Game) NewMap() {
  game.Level = Map{
    []rune("#################"),
    []rune("#.#...#.........#"),
    []rune("#.#.###.#.###.#.#"),
    []rune("#.#.....#...#.#.#"),
    []rune("#.#.#######.#.###"),
    []rune("#.#...#...#.#...#"),
    []rune("#.###.###...###.#"),
    []rune("#...#.......#...#"),
    []rune("#.#.#########...#"),
    []rune("#.#.............#"),
    []rune("#################"),
  }
}