clean up

rooms work, connections are missing

.idea/el_diabolo.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="EMPTY_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

Cargo.lock

@@ -86,9 +86,21 @@ name = "el_diabolo"
 version = "0.1.0"
 dependencies = [
  "crossterm",
+ "rand",
  "ratatui",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fe9006bed769170c11f845cf00c7c1e9092aeb3f268e007c3e760ac68008070f"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.14.2"
@@ -198,6 +210,12 @@ version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "de3145af08024dea9fa9914f381a17b8fc6034dfb00f3a84013f7ff43f29ed4c"
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.69"
@@ -216,6 +234,36 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
 [[package]]
 name = "ratatui"
 version = "0.24.0"

Cargo.toml

@@ -8,3 +8,4 @@ edition = "2021"
 [dependencies]
 ratatui = "0.24.0"
 crossterm = "0.27.0"
+rand = "0.8.5"

src/artifacts.rs

@@ -1,56 +0,0 @@
-use crate::position::Position;
-use crate::player::Player;
-
-pub trait Artifact {
-    //! An artifact that can be collected by the player
-    /// get the position of the artifact in the level
-    fn get_immutable_position(&self) -> &Position;
-    /// call to apply the effects of the artifact to the player
-    fn collect(&mut self, player: &mut Player);
-}
-
-pub struct Chest {
-    /// a chest that contains some gold
-    position: Position,
-    gold: usize,
-}
-
-impl Chest {
-    pub fn new(position: Position) -> Self {
-        Self {
-            position,
-            gold: 10,
-        }
-    }
-}
-
-impl Artifact for Chest {
-    fn get_immutable_position(&self) -> &Position { &self.position }
-    fn collect(&mut self, player: &mut Player) {
-        player.retrieve_gold(self.gold);
-        self.gold = 0;
-    }
-}
-
-pub struct Potion {
-    /// a potion that restores some health
-    position: Position,
-    health: usize,
-}
-
-impl Potion {
-    pub fn new(position: Position) -> Self {
-        Self {
-            position,
-            health: 5,
-        }
-    }
-}
-
-impl Artifact for Potion {
-    fn get_immutable_position(&self) -> &Position { &self.position }
-    fn collect(&mut self, player: &mut Player) {
-        player.change_life(self.health.try_into().unwrap());
-        self.health = 0;
-    }
-}

src/game.rs

@@ -1,23 +1,30 @@
-use crate::level::Level;
+use crate::level::{Level, LevelElement};
 use crate::player::Player;
 
-pub const LEVELS: usize = 2;
+pub struct Game {
-
+    pub player: Player,
-pub struct Game<'game> {
+    pub levels: [Level; 25],
-    pub player: &'game mut Player,
-    pub levels: Vec<Level>,
 }
 
-impl Game<'_> {
+impl Game {
-    pub fn new(p: &mut Player) -> Game {
+    pub fn move_player(&mut self, dx: i8, dy: i8) {
-        let mut v: Vec<Level> = Vec::with_capacity(LEVELS);
+        // check if move is allowed first
-        for d in 0..LEVELS {
+        let player = &self.player;
-            let l = Level::new(d);
+        let player_pos = player.get_position();
-            v.push(l);
+        let level = &self.levels[player_pos.get_level() as usize];
+        let new_x = ((player_pos.get_x() as i16) + dx as i16) as u16;
+        let new_y = ((player_pos.get_y() as i16) + dy as i16) as u16;
+        let can_go: bool = match level.get_element(new_x as i16, new_y as i16) {
+            None => { false }
+            Some(t) => {
+                match t {
+                    LevelElement::Wall => { false }
+                    _ => { true }
                 }
-        Game {
+            }
-            player: p,
+        };
-            levels: v,
+        if can_go {
+            self.player.change_position(dx, dy);
         }
     }
 }

src/level.rs

@@ -1,298 +1,56 @@
-use std::cmp::{max, min};
-use crate::artifacts::{Artifact, Chest, Potion};
-use crate::monster::Monster;
-use crate::position::Position;
-
 pub const LEVEL_WIDTH: usize = 50;
 pub const LEVEL_HEIGHT: usize = 25;
 
 #[derive(Copy, Clone, Debug, PartialEq)]
-pub enum StructureElement {
+pub enum LevelElement {
     Wall,
     Floor,
     StairDown,
     StairUp,
-    Unknown,
 }
 
+#[derive(Copy, Clone, Debug, PartialEq)]
+pub enum RoomType {
+    Start,
+    End,
+    StairUp,
+    StairDown,
+    BasicRoom,
+    EmptyRoom,
+}
+
+#[derive(Copy, Clone, Debug, PartialEq)]
 pub struct Level {
-    level: usize,
+    pub(crate) structure: [[LevelElement; LEVEL_HEIGHT]; LEVEL_WIDTH],
-    structure: [[StructureElement; LEVEL_HEIGHT]; LEVEL_WIDTH],
+    pub(crate) start_x: usize,
-    discovered: [[bool; LEVEL_HEIGHT]; LEVEL_WIDTH],
+    pub(crate) start_y: usize,
-    monsters: Vec<Monster>,
-    artifacts: Vec<Box<dyn Artifact>>,
 }
 
 impl Level {
-    pub fn new(level: usize) -> Level {
+    pub fn new() -> Level {
-        let mut s = [[StructureElement::Wall; LEVEL_HEIGHT]; LEVEL_WIDTH];
+        let mut s = [[LevelElement::Wall; LEVEL_HEIGHT]; LEVEL_WIDTH];
-        for x in 2..LEVEL_WIDTH - 2 {
-            for y in 2..LEVEL_HEIGHT - 2 {
-                s[x][y] = StructureElement::Floor;
-            }
-        }
         Level {
-            level,
             structure: s,
-            discovered: [[false; LEVEL_HEIGHT]; LEVEL_WIDTH],
+            start_x: 1,
-            monsters: Vec::with_capacity(10),
+            start_y: 1,
-            artifacts: Vec::with_capacity(10),
         }
     }
-    pub fn get_element(&mut self, x: i16, y: i16) -> (Option<StructureElement>, Option<&mut Monster>, Option<&mut Box<(dyn Artifact + 'static)>>) {
+    pub fn get_element(&self, x: i16, y: i16) -> Option<LevelElement> {
         if x < 0 || y < 0 {
-            return (None, None, None);
+            return None;
-        }
-        let x = x as usize;
-        let y = y as usize;
-        if x >= LEVEL_WIDTH || y >= LEVEL_HEIGHT {
-            return (None, None, None);
-        }
-        if !self.discovered[x][y] {
-            return (Some(StructureElement::Unknown), None, None);
-        }
-        let search_pos = &Position::new(self.level, x, y);
-        let mut res_m: Option<&mut Monster> = None;
-        for m in &mut self.monsters {
-            if m.get_immutable_position() == search_pos {
-                res_m = Some(m);
-            }
-        }
-        let mut res_a: Option<&mut Box<dyn Artifact>> = None;
-        for a in &mut self.artifacts {
-            if a.get_immutable_position() == search_pos {
-                res_a = Some(a);
-            }
-        }
-        (Some(self.structure[x][y]), res_m, res_a)
-    }
-    pub fn add_monster(&mut self, mut monster: Monster) -> Result<(), String> {
-        if self.level != monster.get_position().get_level() {
-            return Err("Wrong Level".to_string());
-        }
-        for m in &mut self.monsters {
-            if m.get_position() == monster.get_position() {
-                return Err("Position already used".to_string());
-            }
-        }
-        self.monsters.push(monster);
-        Ok(())
-    }
-
-    pub fn remove_dead_monster(&mut self, position: &Position) -> Result<(), String> {
-        if self.level != position.get_level() {
-            return Err("Wrong Level".to_string());
-        }
-        for (index, m) in &mut self.monsters.iter().enumerate() {
-            if m.get_immutable_position() == position {
-                if !m.is_dead() {
-                    return Err("Monster not dead".to_string());
-                }
-                self.monsters.remove(index);
-                break;
-            }
-        }
-        Ok(())
-    }
-    pub fn add_artifact(&mut self, artifact: impl Artifact + 'static) -> Result<(), String> {
-        if self.level != artifact.get_immutable_position().get_level() {
-            return Err("Wrong Level".to_string());
-        }
-        for a in &mut self.artifacts {
-            if a.get_immutable_position() == artifact.get_immutable_position() {
-                return Err("Position already used".to_string());
-            }
-        }
-        self.artifacts.push(Box::new(artifact));
-        Ok(())
-    }
-    pub fn remove_artifact(&mut self, position: &Position) -> Result<(), String> {
-        if self.level != position.get_level() {
-            return Err("Wrong Level".to_string());
-        }
-        for (index, a) in &mut self.artifacts.iter().enumerate() {
-            if a.get_immutable_position() == position {
-                self.monsters.remove(index);
-                break;
-            }
-        }
-        Ok(())
-    }
-    /// discover the area with in the level around the given position
-    pub fn discover(&mut self, pos: &Position) {
-        let x = pos.get_x();
-        let y = pos.get_y();
-
-        // uncover fields directly next to the player
-        for x_r in max(x - 1, 0)..=min(x + 1, LEVEL_WIDTH - 1) {
-            for y_r in max(y - 1, 0)..=min(y + 1, LEVEL_HEIGHT - 1) {
-                self.discovered[x_r][y_r] = true;
-            }
-        }
-
-        // uncover fields up to 2 fields right of the player
-        for x_r in x..=min(x + 2, LEVEL_WIDTH - 1) {
-            self.discovered[x_r][y] = true;
-            if self.structure[x_r][y] == StructureElement::Wall {
-                break;
-            }
-        }
-
-        // uncover fields up to 2 fields below of the player
-        for y_r in y..=min(y + 2, LEVEL_HEIGHT - 1) {
-            self.discovered[x][y_r] = true;
-            if self.structure[x][y_r] == StructureElement::Wall {
-                break;
-            }
-        }
-
-        // uncover fields up to 2 fields left of the player
-        for x_r in (max(x, 2)..x + 2).rev() {
-            self.discovered[x_r - 2][y] = true;
-            if self.structure[x_r - 2][y] == StructureElement::Wall {
-                break;
-            }
-        }
-
-        // uncover fields up to 2 fields above of the player
-        for y_r in (max(y, 2)..y + 2).rev() {
-            self.discovered[x][y_r - 2] = true;
-            if self.structure[x][y_r - 2] == StructureElement::Wall {
-                break;
         }
+        if x >= LEVEL_WIDTH as i16 || y >= LEVEL_HEIGHT as i16 {
+            return None;
         }
+        Some(self.structure[x as usize][y as usize])
     }
 }
 
 #[test]
 fn test_get_element() {
-    let mut l = Level::new(0);
+    let l = Level::new();
-    assert_eq!(l.get_element(-1, -1).0, None);
+    assert_eq!(l.get_element(0, 0).unwrap(), LevelElement::Wall);
-    assert_eq!(l.get_element(0, 0).0.unwrap(), StructureElement::Unknown);
+    assert_eq!(l.get_element(4, 4).unwrap(), LevelElement::StairDown);
-    assert_eq!(l.get_element(LEVEL_WIDTH as i16 - 1, LEVEL_HEIGHT as i16 - 1).0.unwrap(), StructureElement::Unknown);
+    assert_eq!(l.get_element(49, 24).unwrap(), LevelElement::Wall);
-    assert_eq!(l.get_element(LEVEL_WIDTH as i16, LEVEL_HEIGHT as i16).0, None);
+    assert_eq!(l.get_element(50, 25), None);
-}
-
-#[test]
-fn test_discover_get_element() {
-    let mut l = Level::new(0);
-    assert_eq!(l.get_element(10, 10).0.unwrap(), StructureElement::Unknown);
-    let p = Position::new(0, 10, 10);
-    l.discover(&p);
-    assert_eq!(l.get_element(10, 10).0.unwrap(), StructureElement::Floor);
-    assert_eq!(l.get_element(9, 10).0.unwrap(), StructureElement::Floor);
-    assert_eq!(l.get_element(10, 9).0.unwrap(), StructureElement::Floor);
-    assert_eq!(l.get_element(11, 10).0.unwrap(), StructureElement::Floor);
-    assert_eq!(l.get_element(10, 11).0.unwrap(), StructureElement::Floor);
-}
-
-#[test]
-fn test_discover_can_add_monster() {
-    let mut l = Level::new(0);
-    let mut m = Monster::new(2);
-    m.get_position().set(1, 2, 3);
-    assert_eq!(l.add_monster(m), Err("Wrong Level".to_string()));
-
-    let mut m = Monster::new(2);
-    m.get_position().set(0, 2, 3);
-    assert_eq!(l.add_monster(m), Ok(()));
-
-    let mut m = Monster::new(2);
-    m.get_position().set(0, 2, 3);
-    assert_eq!(l.add_monster(m), Err("Position already used".to_string()));
-
-    let mut m = Monster::new(2);
-    m.get_position().set(0, 2, 4);
-    assert_eq!(l.add_monster(m), Ok(()));
-}
-
-#[test]
-fn test_discover_can_add_artifact() {
-    let mut l = Level::new(0);
-    let a = Chest::new(Position::new(1, 2, 3));
-    assert_eq!(l.add_artifact(a), Err("Wrong Level".to_string()));
-
-    let a = Chest::new(Position::new(0, 2, 3));
-    assert_eq!(l.add_artifact(a), Ok(()));
-
-    let a = Potion::new(Position::new(0, 2, 3));
-    assert_eq!(l.add_artifact(a), Err("Position already used".to_string()));
-
-    let a = Chest::new(Position::new(0, 1, 3));
-    assert_eq!(l.add_artifact(a), Ok(()));
-}
-
-#[test]
-fn test_discover_get_monster() {
-    let mut l = Level::new(0);
-    let p = Position::new(0, 10, 10);
-    l.discover(&p);
-    assert_eq!(l.get_element(10, 10).0.unwrap(), StructureElement::Floor);
-    assert!(l.get_element(10, 10).1.is_none());
-
-    let mut m = Monster::new(23);
-    m.get_position().set(0, 10, 10);
-    assert_eq!(l.add_monster(m), Ok(()));
-
-    let elem = l.get_element(10, 10);
-    assert_eq!(elem.0.unwrap(), StructureElement::Floor);
-    assert!(elem.1.is_some());
-    let m = elem.1.unwrap();
-    assert_eq!(m.get_life(), 23);
-
-    m.decrease_life(2);
-    assert_eq!(l.get_element(10, 10).1.unwrap().get_life(), 21);
-}
-
-#[test]
-fn test_discover_get_artifact() {
-    let mut l = Level::new(0);
-    let p = Position::new(0, 10, 10);
-    l.discover(&p);
-    assert_eq!(l.get_element(10, 10).0.unwrap(), StructureElement::Floor);
-    assert!(l.get_element(10, 10).2.is_none());
-
-    let a = Chest::new(Position::new(0, 10, 10));
-    assert_eq!(l.add_artifact(a), Ok(()));
-
-    let elem = l.get_element(10, 10);
-    assert_eq!(elem.0.unwrap(), StructureElement::Floor);
-    assert!(elem.2.is_some());
-}
-
-#[test]
-fn test_discover_get_monster_can_move() {
-    let mut l = Level::new(0);
-    let p = Position::new(0, 10, 10);
-    l.discover(&p);
-
-    let mut m = Monster::new(23);
-    m.get_position().set(0, 10, 10);
-    l.add_monster(m).expect("Panic because of");
-
-    let m = l.get_element(10, 10).1.unwrap();
-    m.get_position().change(1, 1);
-
-    let m = l.get_element(10, 10).1;
-    assert!(m.is_none());
-    let m = l.get_element(11, 11).1;
-    assert!(m.is_some());
-    assert_eq!(m.unwrap().get_life(), 23);
-}
-
-#[test]
-fn test_monster_can_be_removed() {
-    let mut level = Level::new(0);
-    level.discover(&Position::new(0, 10, 10));
-
-    let mut m = Monster::new(2);
-    m.get_position().set(0, 10, 10);
-    level.add_monster(m).expect("Panic because of");
-
-    let m = level.get_element(10, 10).1.unwrap();
-    m.decrease_life(3);
-
-    assert_eq!(level.remove_dead_monster(&Position::new(0, 10, 10)), Ok(()));
-
-    assert!(level.get_element(10, 10).1.is_none());
 }

src/level_generator.rs

@@ -0,0 +1,153 @@
+use rand::prelude::SliceRandom;
+use rand::Rng;
+
+use crate::level::{Level, LevelElement, RoomType};
+
+const ROOMS_VERTICAL: usize = 7;
+const ROOMS_HORIZONTAL: usize = 4;
+const ROOM_WIDTH: usize = 7;
+const ROOM_HEIGHT: usize = 6;
+
+#[derive(Copy, Clone, Debug, PartialEq)]
+struct Room {
+    pub kind: RoomType,
+    pub offset_x: usize,
+    pub offset_y: usize,
+    pub width: usize,
+    pub height: usize,
+    pub connection_down: bool,
+    pub connection_right: bool,
+    pub connected: bool,
+}
+
+impl Room {
+    fn new() -> Self {
+        Self {
+            kind: RoomType::EmptyRoom,
+            offset_x: 0,
+            offset_y: 0,
+            width: 0,
+            height: 0,
+            connection_down: false,
+            connection_right: false,
+            connected: false,
+        }
+    }
+}
+
+#[derive(Debug)]
+pub struct LevelGenerator {
+    rooms: [[Room; ROOMS_HORIZONTAL]; ROOMS_VERTICAL],
+}
+
+impl LevelGenerator {
+    pub fn generate(level: usize) -> Self {
+        let mut room_types: Vec<RoomType> = Vec::with_capacity(ROOMS_HORIZONTAL * ROOMS_VERTICAL);
+        if level > 0 {
+            room_types.push(RoomType::StairUp);
+        } else {
+            room_types.push(RoomType::Start);
+        }
+        if level < 24 {
+            room_types.push(RoomType::StairDown);
+        } else {
+            room_types.push(RoomType::End);
+        }
+        let mut rng = rand::thread_rng();
+        for _ in room_types.len()..ROOMS_HORIZONTAL * ROOMS_VERTICAL {
+            match rng.gen_range(1..=6) {
+                1..=3 => { room_types.push(RoomType::EmptyRoom) }
+                _ => { room_types.push(RoomType::BasicRoom) }
+            }
+        }
+        room_types.shuffle(&mut rng);
+
+        let mut rooms = [[Room::new(); ROOMS_HORIZONTAL]; ROOMS_VERTICAL];
+        for r in 0..ROOMS_VERTICAL {
+            for c in 0..ROOMS_HORIZONTAL {
+                rooms[r][c].kind = room_types.pop().unwrap();
+                if rooms[r][c].kind != RoomType::EmptyRoom {
+                    let width = rng.gen_range(3..6);
+                    let height = rng.gen_range(3..5);
+                    rooms[r][c].width = width;
+                    rooms[r][c].height = height;
+                    rooms[r][c].offset_x = rng.gen_range(0..(ROOM_WIDTH - width));
+                    rooms[r][c].offset_y = rng.gen_range(0..(ROOM_HEIGHT - height));
+                }
+                if r == ROOMS_HORIZONTAL - 1 || c == ROOMS_HORIZONTAL - 1 {
+                    continue;
+                }
+                match rng.gen_range(0..3) {
+                    0 => { rooms[r][c].connection_down = true }
+                    1 => { rooms[r][c].connection_right = true }
+                    2 => {
+                        rooms[r][c].connection_down = true;
+                        rooms[r][c].connection_down = true
+                    }
+                    _ => {}
+                }
+            }
+        }
+
+        let mut unconnected_rooms = 0;//ROOMS_HORIZONTAL * ROOMS_VERTICAL - 1;
+        rooms[0][0].connected = true;
+        for r in 0..ROOMS_VERTICAL {
+            for c in 0..ROOMS_HORIZONTAL {
+                if !rooms[r][c].connected {
+                    continue;
+                }
+                if rooms[r][c].connection_right {
+                    rooms[r][c + 1].connected = true;
+                }
+                if rooms[r][c].connection_down {
+                    rooms[r + 1][c].connected = true;
+                }
+            }
+        }
+        println!("Unconnected: {}", unconnected_rooms);
+
+        LevelGenerator {
+            rooms
+        }
+    }
+    pub fn render(&self) -> Level {
+        let mut rng = rand::thread_rng();
+        let mut s = [[LevelElement::Wall; 1 + ROOMS_HORIZONTAL * ROOM_HEIGHT]; 1 + ROOMS_VERTICAL * ROOM_WIDTH];
+        let mut start_x: usize = 0;
+        let mut start_y: usize = 0;
+        for c in 0..ROOMS_VERTICAL {
+            for r in 0..ROOMS_HORIZONTAL {
+                let top = 1 + r * ROOM_HEIGHT;
+                let left = 1 + c * ROOM_WIDTH;
+                let room = self.rooms[c][r];
+                for x in 0..room.width {
+                    for y in 0..room.height {
+                        s[left + room.offset_x + x][top + room.offset_y + y] = LevelElement::Floor;
+                    }
+                }
+                if room.kind == RoomType::StairDown {
+                    s[left + room.offset_x + rng.gen_range(0..room.width)][top + room.offset_y + rng.gen_range(0..room.height)] = LevelElement::StairDown;
+                }
+                if room.kind == RoomType::Start || room.kind == RoomType::StairUp {
+                    start_x = left + room.offset_x + rng.gen_range(0..room.width);
+                    start_y = top + room.offset_y + rng.gen_range(0..room.height);
+                }
+                if room.kind == RoomType::StairUp {
+                    s[start_x][start_y] = LevelElement::StairUp;
+                }
+            }
+        }
+        Level {
+            structure: s,
+            start_x,
+            start_y,
+        }
+    }
+}
+
+#[test]
+fn test_level_gen() {
+    let level = LevelGenerator::generate(0);
+    println!("{:?}", level);
+    assert_eq!(1, 2);
+}

src/level_widget.rs

@@ -0,0 +1,155 @@
+use ratatui::prelude::*;
+use ratatui::widgets::Widget;
+use crate::game::Game;
+use crate::level::{Level, LevelElement};
+use crate::player::Player;
+
+const FG_BROWN: Color = Color::Rgb(186, 74, 0);
+
+pub struct LevelWidget<'a> {
+    pub game: &'a Game,
+}
+
+impl<'a> LevelWidget<'a> {
+    fn set_cell(&self, buf: &mut Buffer, x: u16, y: u16, symbol: &str, fg: Color, bg: Color) {
+        buf.
+            get_mut(x, y).
+            set_symbol(symbol).
+            set_bg(bg).
+            set_fg(fg);
+    }
+
+    fn calculate_wall(top: Option<LevelElement>, right: Option<LevelElement>, bottom: Option<LevelElement>, left: Option<LevelElement>) -> String {
+        let mut val = 0;
+        val += match top {
+            Some(n) => {
+                match n {
+                    LevelElement::Wall => 1,
+                    _ => 0
+                }
+            }
+            None => 0
+        };
+        val += match right {
+            Some(n) => {
+                match n {
+                    LevelElement::Wall => 2,
+                    _ => 0
+                }
+            }
+            None => 0
+        };
+        val += match bottom {
+            Some(n) => {
+                match n {
+                    LevelElement::Wall => 4,
+                    _ => 0
+                }
+            }
+            None => 0
+        };
+        val += match left {
+            Some(n) => {
+                match n {
+                    LevelElement::Wall => 8,
+                    _ => 0
+                }
+            }
+            None => 0
+        };
+        [
+            "╋", "┃", "━", "┗",
+            "┃", "┃", "┏", "┣",
+            "━", "┛", "━", "┻",
+            "┓", "┫", "┳", "╋",
+        ][val].to_string()
+    }
+}
+
+impl<'a> Widget for LevelWidget<'a> {
+    fn render(self, area: Rect, buf: &mut Buffer) {
+        let player = &self.game.player;
+        let player_pos = player.get_position();
+        let level = &self.game.levels[player_pos.get_level() as usize];
+
+        let al = area.left();
+        let at = area.top();
+
+        // draw the level elements
+        for x in al..area.right() {
+            for y in at..area.bottom() {
+                let level_x = (x - al) as i16;
+                let level_y = (y - at) as i16;
+                match level.get_element(level_x, level_y) {
+                    None => {}
+                    Some(e) => {
+                        match e {
+                            LevelElement::Wall => {
+                                let top = level.get_element(level_x, level_y - 1);
+                                let right = level.get_element(level_x + 1, level_y);
+                                let bottom = level.get_element(level_x, level_y + 1);
+                                let left = level.get_element(level_x - 1, level_y);
+                                let symbol = LevelWidget::calculate_wall(top, right, bottom, left);
+                                self.set_cell(buf, x, y, symbol.as_str(), FG_BROWN, Color::Gray);
+                            }
+                            LevelElement::Floor => {
+                                self.set_cell(buf, x, y, " ", FG_BROWN, Color::Gray);
+                            }
+                            LevelElement::StairDown => {
+                                self.set_cell(buf, x, y, ">", FG_BROWN, Color::Gray);
+                            }
+                            LevelElement::StairUp => {
+                                self.set_cell(buf, x, y, "<", FG_BROWN, Color::Gray);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        // draw player
+        self.set_cell(buf, al + player_pos.get_x(), at + player_pos.get_y(), "8", Color::Red, Color::Gray);
+    }
+}
+
+#[test]
+fn test_get_wall_symbol() {
+    let wall = Some(LevelElement::Wall);
+    // 0
+    let s = LevelWidget::calculate_wall(None, None, None, None);
+    assert_eq!(s, "╋");
+    // 15
+    let s = LevelWidget::calculate_wall(wall, wall, wall, wall);
+    assert_eq!(s, "╋");
+
+    // 1
+    let s = LevelWidget::calculate_wall(wall, None, None, None);
+    assert_eq!(s, "┃");
+    // 5
+    let s = LevelWidget::calculate_wall(wall, None, wall, None);
+    assert_eq!(s, "┃");
+    // 4
+    let s = LevelWidget::calculate_wall(None, None, wall, None);
+    assert_eq!(s, "┃");
+
+    // 2
+    let s = LevelWidget::calculate_wall(None, wall, None, None);
+    assert_eq!(s, "━");
+    // 10
+    let s = LevelWidget::calculate_wall(None, wall, None, wall);
+    assert_eq!(s, "━");
+
+    // 9
+    let s = LevelWidget::calculate_wall(wall, None, None, wall);
+    assert_eq!(s, "┛");
+    // 3
+    let s = LevelWidget::calculate_wall(wall, wall, None, None);
+    assert_eq!(s, "┗");
+    // 6
+    let s = LevelWidget::calculate_wall(None, wall, wall, None);
+    assert_eq!(s, "┏");
+    // 12
+    let s = LevelWidget::calculate_wall(None, None, wall, wall);
+    assert_eq!(s, "┓");
+}
+

src/main.rs

@@ -1,19 +1,109 @@
+use crossterm::{
+    event::{self, KeyCode, KeyEventKind},
+    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
+    ExecutableCommand,
+};
+use ratatui::{
+    prelude::{CrosstermBackend, Stylize, Terminal},
+    widgets::Paragraph,
+};
+use std::io::{stdout, Result};
+use ratatui::prelude::*;
+use ratatui::widgets::Block;
+
 use crate::game::Game;
+use crate::level::{Level, LevelElement};
+use crate::level_widget::LevelWidget;
 use crate::player::Player;
+use crate::level_generator::LevelGenerator;
 
 mod game;
 mod player;
 mod level;
 mod position;
-mod monster;
+mod level_widget;
-mod artifacts;
+mod level_generator;
 
-fn main() {
+fn main() -> Result<()> {
-    let mut p = Player::new("Teddy Tester", 10);
+    let mut levels: [Level; 25] = [Level::new(); 25];
-    let g = Game::new(&mut p);
+    for l in 0..25 {
+        levels[l] = LevelGenerator::generate(l).render();
+    }
+    let mut g = Game {
+        player: Player::new("Teddy Tester", 10),
+        levels,
+    };
 
-    println!("{}",g.player.get_name());
+    g.player.change_position((levels[0].start_x) as i8, (levels[0].start_y) as i8);
-    println!("{}",g.player.get_life());
+
-    g.player.change_life(-1);
+    stdout().execute(EnterAlternateScreen)?;
-    println!("{}",g.player.get_life());
+    enable_raw_mode()?;
+    let mut terminal = Terminal::new(CrosstermBackend::new(stdout()))?;
+    terminal.clear()?;
+
+    loop {
+        terminal.draw(|frame| {
+            let mut area = frame.size();
+            frame.render_widget(Block::default().style(Style::default().bg(Color::Green)), area);
+
+            if area.width > 80 {
+                area.x = (area.width - 80) / 2;
+                area.width = 80;
+            }
+            if area.height > 25 {
+                area.y = (area.height - 25) / 2;
+                area.height = 25;
+            }
+
+            let map_area = Rect {
+                x: area.x,
+                y: area.y,
+                width: level::LEVEL_WIDTH as u16,
+                height: level::LEVEL_HEIGHT as u16,
+            };
+            frame.render_widget(LevelWidget { game: &g }, map_area);
+
+            let stats_area = Rect {
+                x: area.x + 50,
+                y: area.y,
+                width: 30,
+                height: 25,
+            };
+            frame.render_widget(
+                Paragraph::new(format!("{}\nHealth: {}/{}\n{}/{}/{}",
+                                       g.player.get_name(),
+                                       g.player.get_life(),
+                                       g.player.get_max_life(),
+                                       g.player.get_position().get_level(),
+                                       g.player.get_position().get_x(),
+                                       g.player.get_position().get_y()))
+                    .white()
+                    .on_blue(),
+                stats_area,
+            );
+        })?;
+        if event::poll(std::time::Duration::from_millis(16))? {
+            if let event::Event::Key(key) = event::read()? {
+                if key.kind == KeyEventKind::Press && key.code == KeyCode::Char('q') {
+                    break;
+                }
+                if key.kind == KeyEventKind::Press && key.code == KeyCode::Left {
+                    g.move_player(-1, 0);
+                }
+                if key.kind == KeyEventKind::Press && key.code == KeyCode::Right {
+                    g.move_player(1, 0);
+                }
+                if key.kind == KeyEventKind::Press && key.code == KeyCode::Up {
+                    g.move_player(0, -1);
+                }
+                if key.kind == KeyEventKind::Press && key.code == KeyCode::Down {
+                    g.move_player(0, 1);
+                }
+            }
+        }
+    }
+
+    stdout().execute(LeaveAlternateScreen)?;
+    disable_raw_mode()?;
+    Ok(())
 }

src/monster.rs

@@ -1,51 +0,0 @@
-use crate::position::Position;
-
-pub struct Monster {
-    life: usize,
-    position: Position,
-}
-
-impl Monster {
-    pub fn new(life: usize) -> Self {
-        Monster {
-            life,
-            position: Position::new(0, 0, 0),
-        }
-    }
-    pub fn get_life(&self) -> usize { self.life }
-    pub fn is_dead(&self) -> bool { self.life <= 0 }
-    pub fn decrease_life(&mut self, by: usize) {
-        self.life = self.life.saturating_sub(by);
-    }
-    pub fn get_position(&mut self) -> &mut Position {
-        &mut self.position
-    }
-    pub fn get_immutable_position(&self) -> &Position {
-        &self.position
-    }
-}
-
-#[test]
-fn monsters_can_move() {
-    let mut m = Monster::new(2);
-    assert_eq!(m.get_position(), &Position::new(0, 0, 0));
-    m.get_position().change(1, 2);
-    assert_eq!(m.get_position(), &Position::new(0, 1, 2));
-    m.get_position().change(2, 1);
-    assert_eq!(m.get_position(), &Position::new(0, 3, 3));
-    m.get_position().set(1, 2, 3);
-    m.get_position().change(2, 1);
-    assert_eq!(m.get_position(), &Position::new(1, 4, 4));
-}
-
-#[test]
-fn monsters_can_die() {
-    let mut m = Monster::new(2);
-    assert_eq!(m.get_life(), 2);
-    assert_eq!(m.is_dead(), false);
-    m.decrease_life(1);
-    assert_eq!(m.get_life(), 1);
-    m.decrease_life(2);
-    assert_eq!(m.get_life(), 0);
-    assert_eq!(m.is_dead(), true);
-}

src/player.rs

@@ -6,7 +6,6 @@ pub struct Player {
     position: Position,
     life: i16,
     max_life: i16,
-    gold: usize,
 }
 
 impl Player {
@@ -16,27 +15,22 @@ impl Player {
             position: Position::new(0, 0, 0),
             life: max_life,
             max_life,
-            gold: 0,
         }
     }
     pub fn get_name(&self) -> String {
         return self.name.clone();
     }
+    pub fn get_life(&self) -> i16 { self.life }
+    pub fn get_max_life(&self) -> i16 { self.max_life }
     pub fn change_life(&mut self, by: i16) {
         self.life = max(0, min(self.max_life, self.life + by));
     }
-    pub fn get_life(&self) -> i16 {
+    pub fn get_position(&self) -> Position {
-        self.life
+        self.position
     }
-    pub fn get_position(&mut self) -> &mut Position {
+    pub fn change_position(&mut self, dx: i8, dy: i8) {
-        &mut self.position
+        self.position.change(dx, dy);
     }
-
-    /// add the given amount to the players gold stash
-    pub fn retrieve_gold(&mut self, amount: usize) { self.gold += amount }
-
-    /// return the size of the players gold stash
-    pub fn get_gold(&self) -> usize { self.gold }
 }
 
 #[test]
@@ -46,21 +40,10 @@ fn test_get_name() {
         position: Position::new(0, 1, 1),
         life: 5,
         max_life: 10,
-        gold: 0,
     };
     assert_eq!(p.get_name(), "Teddy Tester");
 }
 
-#[test]
-fn test_can_receive_gold() {
-    let mut p = Player::new("Teddy Tester", 10);
-    assert_eq!(p.get_gold(), 0);
-
-    p.retrieve_gold(13);
-    p.retrieve_gold(10);
-    assert_eq!(p.get_gold(), 23);
-}
-
 #[test]
 fn test_change_life() {
     let mut p = Player {
@@ -68,7 +51,6 @@ fn test_change_life() {
         position: Position::new(0, 1, 1),
         life: 5,
         max_life: 10,
-        gold: 0,
     };
     assert_eq!(p.life, 5);
     p.change_life(-2);
@@ -78,16 +60,3 @@ fn test_change_life() {
     p.change_life(-12);
     assert_eq!(p.life, 0);
 }
-
-#[test]
-fn player_can_move() {
-    let mut p = Player::new("Teddy Tester", 10);
-    assert_eq!(p.get_position(), &Position::new(0, 0, 0));
-    p.get_position().change(1, 2);
-    assert_eq!(p.get_position(), &Position::new(0, 1, 2));
-    p.get_position().change(2, 1);
-    assert_eq!(p.get_position(), &Position::new(0, 3, 3));
-    p.get_position().set(1, 2, 3);
-    p.get_position().change(2, 1);
-    assert_eq!(p.get_position(), &Position::new(1, 4, 4));
-}

src/position.rs

@@ -1,35 +1,32 @@
-#[derive(PartialEq, Debug)]
+#[derive(Copy, Clone, Debug, PartialEq)]
 pub struct Position {
-    level: usize,
+    level: u8,
-    x: usize,
+    x: u16,
-    y: usize,
+    y: u16,
 }
 
 impl Position {
-    pub fn new(level: usize, x: usize, y: usize) -> Self {
+    pub fn new(level: u8, x: u16, y: u16) -> Self {
         Self {
             level,
             x,
             y,
         }
     }
-    pub fn change(&mut self, dx: i16, dy: i16) {
+    pub fn get_level(&self) -> u8 {
-        self.x = ((self.x as i16) + dx) as usize;
-        self.y = ((self.y as i16) + dy) as usize;
-    }
-    pub fn set(&mut self, level: usize, x: usize, y: usize) {
-        self.level = level;
-        self.x = x;
-        self.y = y;
-    }
-
-    pub fn get_level(&self) -> usize {
         self.level
     }
 
-    pub fn get_x(&self) -> usize {
+    pub fn get_x(&self) -> u16 {
         self.x
     }
 
-    pub fn get_y(&self) -> usize { self.y }
+    pub fn get_y(&self) -> u16 {
+        self.y
+    }
+
+    pub fn change(&mut self, dx: i8, dy: i8) {
+        self.x = ((self.x as i16) + dx as i16) as u16;
+        self.y = ((self.y as i16) + dy as i16) as u16;
+    }
 }