Add cellular automata

.idea/workspace.xml

@@ -13,12 +13,12 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="a9f5cad0-d253-42e8-a38a-89dfec417dbc" name="Changes" comment="">
-      <change afterPath="$PROJECT_DIR$/src/map_builders/bsp/mod.rs" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/map_builders/cellular_automata.rs" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/src/map_builders/bsp_interior.rs" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/.gitignore" beforeDir="false" />
       <change beforePath="$PROJECT_DIR$/src/components.rs" beforeDir="false" afterPath="$PROJECT_DIR$/src/components.rs" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/map_builders/bsp/mod.rs" beforeDir="false" afterPath="$PROJECT_DIR$/src/map_builders/bsp/mod.rs" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/map_builders/bsp_dungeon.rs" beforeDir="false" afterPath="$PROJECT_DIR$/src/map_builders/bsp_dungeon.rs" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/map_builders/common.rs" beforeDir="false" afterPath="$PROJECT_DIR$/src/map_builders/common.rs" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/map_builders/bsp_interior.rs" beforeDir="false" afterPath="$PROJECT_DIR$/src/map_builders/bsp_interior.rs" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/map_builders/mod.rs" beforeDir="false" afterPath="$PROJECT_DIR$/src/map_builders/mod.rs" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/map_builders/simple_map.rs" beforeDir="false" afterPath="$PROJECT_DIR$/src/map_builders/simple_map.rs" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/spawner.rs" beforeDir="false" afterPath="$PROJECT_DIR$/src/spawner.rs" afterDir="false" />
@@ -49,6 +49,9 @@
     <option name="stateVersion" value="1" />
   </component>
   <component name="ProjectId" id="24PyiDwZbQQQ0gzNvMewyQ4Zryi" />
+  <component name="ProjectLevelVcsManager">
+    <ConfirmationsSetting value="2" id="Add" />
+  </component>
   <component name="ProjectViewState">
     <option name="hideEmptyMiddlePackages" value="true" />
     <option name="showLibraryContents" value="true" />
@@ -64,6 +67,7 @@
     <property name="node.js.detected.package.tslint" value="true" />
     <property name="node.js.selected.package.eslint" value="(autodetect)" />
     <property name="node.js.selected.package.tslint" value="(autodetect)" />
+    <property name="nodejs_package_manager_path" value="npm" />
     <property name="org.rust.cargo.project.model.PROJECT_DISCOVERY" value="true" />
     <property name="settings.editor.selected.configurable" value="reference.settingsdialog.project.grazie" />
   </component>
@@ -78,7 +82,7 @@
       <option name="number" value="Default" />
       <option name="presentableId" value="Default" />
       <updated>1643546643557</updated>
-      <workItem from="1643546645546" duration="2136000" />
+      <workItem from="1643546645546" duration="7299000" />
     </task>
     <servers />
   </component>

src/components.rs

@@ -13,18 +13,13 @@ pub struct Position {
 
 impl Position {
     pub fn new(x: i32, y: i32) -> Self {
-        Self {
+        Self { x, y }
-            x, y
-        }
     }
 }
 
 impl Default for Position {
     fn default() -> Self {
-        Self {
+        Self { x: 0, y: 0 }
-            x: 0,
-            y: 0
-        }
     }
 }
 

src/map_builders/bsp_dungeon.rs

@@ -186,7 +186,7 @@ impl MapBuilder for BspDungeonBuilder {
 
     fn spawn_entities(&mut self, ecs: &mut World) {
         for room in self.rooms.iter().skip(1) {
-            spawner::spawn_room(ecs, room, self.depth, &self.map);
+            spawner::spawn_room(ecs, room, self.depth);
         }
     }
 

src/map_builders/bsp_interior.rs

@@ -1,10 +1,10 @@
-use rltk::RandomNumberGenerator;
-use crate::{Map, Position, SHOW_MAPGEN_VISUALIZER, spawner, TileType, World};
 use crate::map_builders::common::reveal_all;
 use crate::map_builders::{bsp, MapBuilder};
 use crate::rect::Rect;
+use crate::{spawner, Map, Position, TileType, World, SHOW_MAPGEN_VISUALIZER};
+use rltk::RandomNumberGenerator;
 
-const MIN_ROOM_SIZE : i32 = 8;
+const MIN_ROOM_SIZE: i32 = 8;
 
 pub struct BspInteriorBuilder {
     map: Map,
@@ -16,18 +16,17 @@ pub struct BspInteriorBuilder {
 }
 
 impl BspInteriorBuilder {
-    pub fn new(new_depth: i32) -> Self{
+    pub fn new(new_depth: i32) -> Self {
         Self {
             map: Map::new(new_depth),
             rects: Vec::new(),
-            history:Vec::new(),
+            history: Vec::new(),
             depth: new_depth,
             rooms: Vec::new(),
-            starting_position: Position::default()
+            starting_position: Position::default(),
         }
     }
 
-
     fn build(&mut self) {
         let mut rng = RandomNumberGenerator::new();
 
@@ -54,8 +53,10 @@ impl BspInteriorBuilder {
             let next_room = self.rooms[i + 1];
             let start_x = room.x1 + (rng.roll_dice(1, i32::abs(room.x1 - room.x2)) - 1);
             let start_y = room.y1 + (rng.roll_dice(1, i32::abs(room.y1 - room.y2)) - 1);
-            let end_x = next_room.x1 + (rng.roll_dice(1, i32::abs(next_room.x1 - next_room.x2)) - 1);
+            let end_x =
-            let end_y = next_room.y1 + (rng.roll_dice(1, i32::abs(next_room.y1 - next_room.y2)) - 1);
+                next_room.x1 + (rng.roll_dice(1, i32::abs(next_room.x1 - next_room.x2)) - 1);
+            let end_y =
+                next_room.y1 + (rng.roll_dice(1, i32::abs(next_room.y1 - next_room.y2)) - 1);
             self.draw_corridor(start_x, start_y, end_x, end_y);
             self.take_snapshot();
         }
@@ -63,7 +64,8 @@ impl BspInteriorBuilder {
 
     fn place_rooms(&mut self, mut rng: &mut RandomNumberGenerator) {
         self.rects.clear();
-        self.rects.push(Rect::new(1, 1, self.map.width - 2, self.map.height - 2));
+        self.rects
+            .push(Rect::new(1, 1, self.map.width - 2, self.map.height - 2));
         let first_room = self.rects[0];
         self.add_subrects(first_room, &mut rng);
 
@@ -96,7 +98,7 @@ impl BspInteriorBuilder {
         let split = rng.roll_dice(1, 4);
 
         if split <= 2 {
-            let h1 = Rect::new(rect.x1, rect.y1, half_width -1, height);
+            let h1 = Rect::new(rect.x1, rect.y1, half_width - 1, height);
             self.rects.push(h1);
             if half_width > MIN_ROOM_SIZE {
                 self.add_subrects(h1, rng);
@@ -106,13 +108,13 @@ impl BspInteriorBuilder {
             if half_width > MIN_ROOM_SIZE {
                 self.add_subrects(h2, rng);
             }
-        }else {
+        } else {
-            let v1 = Rect::new(rect.x1, rect.y1, width , half_height - 1);
+            let v1 = Rect::new(rect.x1, rect.y1, width, half_height - 1);
             self.rects.push(v1);
             if half_height > MIN_ROOM_SIZE {
                 self.add_subrects(v1, rng);
             }
-            let v2 = Rect::new(rect.x1 , rect.y1 + half_height, width, half_height);
+            let v2 = Rect::new(rect.x1, rect.y1 + half_height, width, half_height);
             self.rects.push(v2);
             if half_height > MIN_ROOM_SIZE {
                 self.add_subrects(v2, rng);
@@ -132,7 +134,7 @@ impl MapBuilder for BspInteriorBuilder {
 
     fn spawn_entities(&mut self, ecs: &mut World) {
         for room in self.rooms.iter().skip(1) {
-            spawner::spawn_room(ecs, room, self.depth, &self.map);
+            spawner::spawn_room(ecs, room, self.depth);
         }
     }
 
@@ -154,4 +156,3 @@ impl MapBuilder for BspInteriorBuilder {
         }
     }
 }
-

src/map_builders/cellular_automata.rs

@@ -0,0 +1,168 @@
+use std::collections::HashMap;
+use std::process::exit;
+use rltk::RandomNumberGenerator;
+use crate::map_builders::{common, MapBuilder};
+use crate::{Map, Position, World, SHOW_MAPGEN_VISUALIZER, TileType, spawner};
+
+const MIN_ROOM_SIZE: i32 = 8;
+
+pub struct CellularAutomataBuilder {
+    map: Map,
+    starting_position: Position,
+    depth: i32,
+    history: Vec<Map>,
+    noise_areas : HashMap<i32, Vec<usize>>
+}
+
+impl CellularAutomataBuilder {
+    pub fn new(new_depth: i32) -> Self {
+        Self {
+            history: Vec::new(),
+            map: Map::new(new_depth),
+            depth: new_depth,
+            starting_position: Position::default(),
+            noise_areas: HashMap::new()
+        }
+    }
+
+    fn build(&mut self) {
+        let mut rng = RandomNumberGenerator::new();
+
+        self.place_random_level(&mut rng);
+        self.take_snapshot();
+        self.process_noise();
+        let start_idx = self.place_start();
+        self.place_exit(start_idx);
+        self.take_snapshot();
+        self.place_spawn_areas(rng)
+    }
+
+    fn place_spawn_areas(&mut self, mut rng: RandomNumberGenerator) {
+        let mut noise = rltk::FastNoise::seeded(rng.roll_dice(1, 65536) as u64);
+        noise.set_noise_type(rltk::NoiseType::Cellular);
+        noise.set_frequency(0.08);
+        noise.set_cellular_distance_function(rltk::CellularDistanceFunction::Manhattan);
+
+        for y in 1..self.map.height - 1 {
+            for x in 1..self.map.width - 1 {
+                let idx = self.map.xy_idx(x, y);
+                if self.map.tiles[idx] == TileType::Floor {
+                    let cell_value_f = noise.get_noise(x as f32, y as f32) * 10240.0;
+                    let cell_value = cell_value_f as i32;
+                    if self.noise_areas.contains_key(&cell_value) {
+                        self.noise_areas.get_mut(&cell_value).unwrap().push(idx);
+                    } else {
+                        self.noise_areas.insert(cell_value, vec![idx]);
+                    }
+                }
+            }
+        }
+    }
+
+    fn place_exit(&mut self, start_idx: usize) {
+        let map_starts: Vec<usize> = vec![start_idx];
+        let dijkstra_map = rltk::DijkstraMap::new(self.map.width, self.map.height, &map_starts, &self.map, 200.0);
+        let mut exit_tile = (0, 0.0f32);
+        for (i, tile) in self.map.tiles.iter_mut().enumerate() {
+            if *tile != TileType::Floor {
+                continue;
+            }
+
+            let distance_to_start = dijkstra_map.map[i];
+            if distance_to_start == f32::MAX {
+                *tile = TileType::Wall;
+            } else {
+                if distance_to_start > exit_tile.1 {
+                    exit_tile.0 = i;
+                    exit_tile.1 = distance_to_start;
+                }
+            }
+        }
+        self.take_snapshot();
+        self.map.tiles[exit_tile.0] = TileType::DownStairs;
+    }
+
+    fn place_start(&mut self) -> usize {
+        self.starting_position = Position::new(self.map.width / 2, self.map.height / 2);
+        let mut start_idx = self.map.xy_idx(self.starting_position.x, self.starting_position.y);
+        while self.map.tiles[start_idx] != TileType::Floor {
+            self.starting_position.x -= 1;
+            start_idx = self.map.xy_idx(self.starting_position.x, self.starting_position.y);
+        }
+
+        return start_idx;
+    }
+
+    fn process_noise(&mut self) {
+        for _i in 0..15 {
+            let mut new_tiles = self.map.tiles.clone();
+
+            for y in 1..self.map.height - 1 {
+                for x in 1..self.map.width - 1 {
+                    let idx = self.map.xy_idx(x, y);
+                    let mut neighbors = 0;
+                    if self.map.tiles[idx - 1] == TileType::Wall { neighbors += 1; }
+                    if self.map.tiles[idx + 1] == TileType::Wall { neighbors += 1; }
+                    if self.map.tiles[idx - self.map.width as usize] == TileType::Wall { neighbors += 1; }
+                    if self.map.tiles[idx + self.map.width as usize] == TileType::Wall { neighbors += 1; }
+                    if self.map.tiles[idx - self.map.width as usize - 1] == TileType::Wall { neighbors += 1; }
+                    if self.map.tiles[idx - self.map.width as usize + 1] == TileType::Wall { neighbors += 1; }
+                    if self.map.tiles[idx + self.map.width as usize - 1] == TileType::Wall { neighbors += 1; }
+                    if self.map.tiles[idx + self.map.width as usize + 1] == TileType::Wall { neighbors += 1; }
+
+                    if neighbors > 4 || neighbors == 0 {
+                        new_tiles[idx] = TileType::Wall;
+                    } else {
+                        new_tiles[idx] = TileType::Floor;
+                    }
+                }
+            }
+            self.map.tiles = new_tiles.clone();
+            self.take_snapshot();
+        }
+    }
+
+    fn place_random_level(&mut self, rng: &mut RandomNumberGenerator) {
+        for y in 1..self.map.height - 1 {
+            for x in 1..self.map.width - 1 {
+                let roll = rng.roll_dice(1, 100);
+                let idx = self.map.xy_idx(x, y);
+                if roll > 55 {
+                    self.map.tiles[idx] = TileType::Floor
+                } else {
+                    self.map.tiles[idx] = TileType::Wall
+                }
+            }
+        }
+    }
+}
+
+impl MapBuilder for CellularAutomataBuilder {
+    fn build_map(&mut self) {
+        self.build();
+    }
+
+    fn spawn_entities(&mut self, ecs: &mut World) {
+        for area in self.noise_areas.iter() {
+            spawner::spawn_region(ecs, area.1, self.depth);
+        }
+    }
+
+    fn get_map(&self) -> Map {
+        self.map.clone()
+    }
+
+    fn get_starting_position(&self) -> Position {
+        self.starting_position.clone()
+    }
+
+    fn get_snapshot_history(&self) -> Vec<Map> {
+        self.history.clone()
+    }
+
+    fn take_snapshot(&mut self) {
+        if SHOW_MAPGEN_VISUALIZER {
+            self.history.push(common::reveal_all(&self.map))
+        }
+    }
+}

src/map_builders/mod.rs

@@ -1,13 +1,15 @@
 use specs::World;
 
 use crate::map_builders::bsp_dungeon::BspDungeonBuilder;
+use crate::map_builders::bsp_interior::BspInteriorBuilder;
 use crate::map_builders::simple_map::SimpleMapBuilder;
 use crate::{Map, Position};
-use crate::map_builders::bsp_interior::BspInteriorBuilder;
+use crate::map_builders::cellular_automata::CellularAutomataBuilder;
 
 mod bsp;
 mod bsp_dungeon;
 mod bsp_interior;
+mod cellular_automata;
 mod common;
 mod simple_map;
 
@@ -22,9 +24,10 @@ pub trait MapBuilder {
 
 pub fn new_random_builder(new_depth: i32) -> Box<dyn MapBuilder> {
     let mut rng = rltk::RandomNumberGenerator::new();
-    //let builder_choice = rng.roll_dice(1, 3);
+    //let builder_choice = rng.roll_dice(1, 4);
-    let builder_choice = 2;
+    let builder_choice = 3;
     match builder_choice {
+        3 => Box::new(CellularAutomataBuilder::new(new_depth)),
         2 => Box::new(BspInteriorBuilder::new(new_depth)),
         1 => Box::new(SimpleMapBuilder::new(new_depth)),
         _ => Box::new(BspDungeonBuilder::new(new_depth)),

src/map_builders/simple_map.rs

@@ -83,7 +83,7 @@ impl MapBuilder for SimpleMapBuilder {
 
     fn spawn_entities(&mut self, ecs: &mut World) {
         for room in self.rooms.iter().skip(1) {
-            spawner::spawn_room(ecs, room, self.depth, &self.map);
+            spawner::spawn_room(ecs, room, self.depth);
         }
     }
 

src/spawner.rs

@@ -6,7 +6,12 @@ use specs::saveload::{MarkedBuilder, SimpleMarker};
 
 use crate::random_table::RandomTable;
 use crate::rect::Rect;
-use crate::{AreaOfEffect, BlocksTile, CombatStats, Confusion, Consumable, DefenseBonus, EntryTrigger, EquipmentSlot, Equippable, Hidden, HungerClock, HungerState, InflictsDamage, Item, MagicMapper, MeleePowerBonus, Monster, Name, Player, Position, ProvidesFood, ProvidesHealing, Ranged, Renderable, SerializeMe, SingleActivation, Viewshed, MAP_WIDTH, MAX_MONSTER, Map, TileType};
+use crate::{
+    AreaOfEffect, BlocksTile, CombatStats, Confusion, Consumable, DefenseBonus, EntryTrigger,
+    EquipmentSlot, Equippable, Hidden, HungerClock, HungerState, InflictsDamage, Item, MagicMapper,
+    Map, MeleePowerBonus, Monster, Name, Player, Position, ProvidesFood, ProvidesHealing, Ranged,
+    Renderable, SerializeMe, SingleActivation, TileType, Viewshed, MAP_WIDTH, MAX_MONSTER,
+};
 
 pub fn player(ecs: &mut World, player_x: i32, player_y: i32) -> Entity {
     ecs.create_entity()
@@ -81,32 +86,56 @@ fn monster<S: ToString>(ecs: &mut World, x: i32, y: i32, glyph: FontCharType, na
 }
 
 #[allow(clippy::map_entry)]
-pub fn spawn_room(ecs: &mut World, room: &Rect, map_depth: i32, map: &Map) {
+pub fn spawn_room(ecs: &mut World, room: &Rect, map_depth: i32) {
-    let spawn_table = room_table(map_depth);
+    let mut possible_targets: Vec<usize> = Vec::new();
-    let mut spawn_points: HashMap<usize, String> = HashMap::new();
 
     {
+        let map = ecs.fetch::<Map>();
+        for y in room.y1 + 1..room.y2 {
+            for x in room.x1 + 1..room.x2 {
+                let idx = map.xy_idx(x, y);
+                if map.tiles[idx] == TileType::Floor {
+                    possible_targets.push(idx)
+                }
+            }
+        }
+    }
+
+    spawn_region(ecs, &possible_targets, map_depth);
+}
+
+pub(crate) fn spawn_region(ecs: &mut World, area: &[usize], map_depth: i32) {
+    if let Some(spawn_points) = calculate_spawn_points(ecs, area, map_depth) {
+        spawn_entities(ecs, spawn_points)
+    }
+}
+
+fn spawn_entities(ecs: &mut World, spawn_points: HashMap<usize, String>) {
+    for spawn in spawn_points.iter() {
+        spawn_entity(ecs, &spawn);
+    }
+}
+
+fn calculate_spawn_points(ecs: &mut World, area: &[usize], map_depth: i32) -> Option<HashMap<usize, String>> {
+    let mut spawn_points: HashMap<usize, String> = HashMap::new();
+    let spawn_table = room_table(map_depth);
+    let mut areas: Vec<usize> = Vec::from(area);
     let mut rng = ecs.write_resource::<RandomNumberGenerator>();
-        let num_spawns = rng.roll_dice(1, MAX_MONSTER + 3) + (map_depth - 1) - 3;
+
+    let num_spawns = i32::min(areas.len() as i32, rng.roll_dice(1, MAX_MONSTER + 3));
+    if num_spawns == 0 { return None; }
 
     for _i in 0..num_spawns {
-            let mut added = false;
+        let array_idx = if areas.len() == 1 { 0usize } else { (rng.roll_dice(1, areas.len() as i32 - 1) as usize) };
-            let mut tried = 0;
+        let map_idx = areas[array_idx];
-            while !added && tried < 20 {
+        spawn_points.insert(map_idx, spawn_table.roll(&mut rng));
-                let x = (room.x1 + rng.roll_dice(1, i32::abs(room.x2 - room.x1))) as usize;
+        areas.remove(array_idx);
-                let y = (room.y1 + rng.roll_dice(1, i32::abs(room.y2 - room.y1))) as usize;
-                let idx = (y * MAP_WIDTH) + x;
-                if !spawn_points.contains_key(&idx) && map.tiles[idx] != TileType::Wall {
-                    spawn_points.insert(idx, spawn_table.roll(&mut rng));
-                    added = true;
-                } else {
-                    tried += 1;
-                }
-            }
-        }
     }
 
-    for spawn in spawn_points.iter() {
+    Some(spawn_points)
+}
+
+fn spawn_entity(ecs: &mut World, spawn: &(&usize, &String)) {
     let x = (*spawn.0 % MAP_WIDTH) as i32;
     let y = (*spawn.0 / MAP_WIDTH) as i32;
 
@@ -130,7 +159,6 @@ pub fn spawn_room(ecs: &mut World, room: &Rect, map_depth: i32, map: &Map) {
         "Bear Trap" => bear_trap(ecs, x, y),
         _ => {}
     }
-    }
 }
 
 pub fn health_potion(ecs: &mut World, x: i32, y: i32) {