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// -*- coding: utf-8 -*-
//
// Copyright 2021 Michael Büsch <m@bues.ch>
//
// Derived from https://github.com/mlochen/dungeon.git
// Copyright (C) 2020 Marco Lochen
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
//
use crate::player::Player;
use crate::vec2d::Vec2D;
use crate::wall::Wall;
use anyhow as ah;
use std::fs::OpenOptions;
use std::io::prelude::*;
use std::path::Path;
pub struct World {
walls: Vec<Wall>,
player: Player,
}
impl World {
pub fn new(walls: Vec<Wall>, player: Player) -> World {
World { walls, player }
}
pub fn load(file: &Path) -> ah::Result<World> {
let mut f = match OpenOptions::new().read(true).open(file) {
Ok(f) => f,
Err(e) => return Err(ah::format_err!("World::load({}): {}", file.display(), e)),
};
let mut buf = String::new();
match f.read_to_string(&mut buf) {
Ok(_) => (),
Err(e) => return Err(ah::format_err!("World::load({}): {}", file.display(), e)),
}
let lines: Vec<Vec<char>> = buf.lines().map(|line| line.chars().collect()).collect();
let height = lines.len();
if height < 2 {
return Err(ah::format_err!(
"World::load({}): Height too small.",
file.display()
));
}
let width = lines[0].len();
if width < 2 {
return Err(ah::format_err!(
"World::load({}): Width too small.",
file.display()
));
}
// Create walls.
let mut walls = vec![];
for y in 0..(height - 1) {
if lines[y].len() != width || lines[y + 1].len() != width {
return Err(ah::format_err!(
"World::load({}): Inconsistent width.",
file.display()
));
}
for x in 0..(width - 1) {
let this = lines[y][x];
let next_in_line = lines[y][x + 1];
let next_in_col = lines[y + 1][x];
if this == '#' {
if next_in_line != '#' {
// Bottom to top in map.
walls.push(Wall::new(
Vec2D::new(0.0, -1.0),
Vec2D::new(x as f32 + 1.0, y as f32 + 0.5),
));
}
if next_in_col != '#' {
// Left to right in map.
walls.push(Wall::new(
Vec2D::new(1.0, 0.0),
Vec2D::new(x as f32 + 0.5, y as f32 + 1.0),
));
}
} else {
if next_in_line == '#' {
// Top to bottom in map.
walls.push(Wall::new(
Vec2D::new(0.0, 1.0),
Vec2D::new(x as f32 + 1.0, y as f32 + 0.5),
));
}
if next_in_col == '#' {
// Right to left in map.
walls.push(Wall::new(
Vec2D::new(-1.0, 0.0),
Vec2D::new(x as f32 + 0.5, y as f32 + 1.0),
));
}
}
}
}
// Create player, enemies, switches.
let mut player = None;
#[allow(clippy::needless_range_loop)]
for y in 0..height {
for x in 0..width {
let this = lines[y][x];
if this == 'p' {
// Player.
if player.is_some() {
return Err(ah::format_err!(
"World::load({}): Found multiple players.",
file.display()
));
}
player = Some(Player::new(Vec2D::new(x as f32 + 0.5, y as f32 + 0.5)));
}
if this == 'e' { // Enemy.
//TODO
}
if this == 's' || this == 'g' { // Switch or goal.
//TODO
}
}
}
let player = match player {
Some(p) => p,
None => {
return Err(ah::format_err!(
"World::load({}): No player found.",
file.display()
))
}
};
Ok(Self::new(walls, player))
}
pub fn get_walls(&self) -> &[Wall] {
&self.walls
}
pub fn get_player(&self) -> &Player {
&self.player
}
pub fn get_player_mut(&mut self) -> &mut Player {
&mut self.player
}
}
// vim: ts=4 sw=4 expandtab
|
