Add Victory turn state, amulet, and victory condition

src/components.rs

@@ -38,3 +38,9 @@ pub struct WantsToAttack {
 
 #[derive(Clone, Copy, Debug, PartialEq)]
 pub struct ChasingPlayer;
+
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub struct Item;
+
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub struct AmuletOfYala;

src/main.rs

@@ -42,6 +42,7 @@ impl State {
         let map_builder = MapBuilder::new(&mut rng);
 
         spawn_player(&mut ecs, map_builder.player_start);
+        spawn_amulet_of_yala(&mut ecs, map_builder.amulet_start);
 
         map_builder
             .rooms
@@ -63,6 +64,24 @@ impl State {
         }
     }
 
+    fn reset_game_state(&mut self) {
+        self.ecs = World::default();
+        self.resources = Resources::default();
+        let mut rng = RandomNumberGenerator::new();
+        let map_builder = MapBuilder::new(&mut rng);
+        spawn_player(&mut self.ecs, map_builder.player_start);
+        spawn_amulet_of_yala(&mut self.ecs, map_builder.amulet_start);
+        map_builder
+            .rooms
+            .iter()
+            .skip(1)
+            .map(|r| r.center())
+            .for_each(|pos| spawn_monster(&mut self.ecs, &mut rng, pos));
+        self.resources.insert(map_builder.map);
+        self.resources.insert(Camera::new(map_builder.player_start));
+        self.resources.insert(TurnState::AwaitingInput);
+    }
+
     fn game_over(&mut self, ctx: &mut BTerm) {
         ctx.set_active_console(2);
         ctx.print_color_centered(2, RED, BLACK, "Your quest has ended.");
@@ -87,20 +106,29 @@ impl State {
         ctx.print_color_centered(9, GREEN, BLACK, "Press 1 to play again.");
 
         if let Some(VirtualKeyCode::Key1) = ctx.key {
-            self.ecs = World::default();
-            self.resources = Resources::default();
-            let mut rng = RandomNumberGenerator::new();
-            let map_builder = MapBuilder::new(&mut rng);
-            spawn_player(&mut self.ecs, map_builder.player_start);
-            map_builder
-                .rooms
-                .iter()
-                .skip(1)
-                .map(|r| r.center())
-                .for_each(|pos| spawn_monster(&mut self.ecs, &mut rng, pos));
-            self.resources.insert(map_builder.map);
-            self.resources.insert(Camera::new(map_builder.player_start));
-            self.resources.insert(TurnState::AwaitingInput);
+            self.reset_game_state();
+        }
+    }
+
+    fn victory(&mut self, ctx: &mut BTerm) {
+        ctx.set_active_console(2);
+        ctx.print_color_centered(2, GREEN, BLACK, "You have won!");
+        ctx.print_color_centered(
+            4,
+            WHITE,
+            BLACK,
+            "You put on the Amulet of Yala and feel its power course through your veins.",
+        );
+        ctx.print_color_centered(
+            5,
+            WHITE,
+            BLACK,
+            "Your town is saved, and you can return to your normal life.",
+        );
+        ctx.print_color_centered(7, GREEN, BLACK, "Press 1 to play again.");
+
+        if let Some(VirtualKeyCode::Key1) = ctx.key {
+            self.reset_game_state();
         }
     }
 }
@@ -131,6 +159,7 @@ impl GameState for State {
                 .monster_systems
                 .execute(&mut self.ecs, &mut self.resources),
             TurnState::GameOver => self.game_over(ctx),
+            TurnState::Victory => self.victory(ctx),
         }
 
         render_draw_buffer(ctx).expect("Render error");

src/map_builder.rs

@@ -6,6 +6,7 @@ pub struct MapBuilder {
     pub map: Map,
     pub rooms: Vec<Rect>,
     pub player_start: Point,
+    pub amulet_start: Point,
 }
 
 impl MapBuilder {
@@ -14,11 +15,30 @@ impl MapBuilder {
             map: Map::new(),
             rooms: Vec::new(),
             player_start: Point::zero(),
+            amulet_start: Point::zero(),
         };
         mb.fill(TileType::Wall);
         mb.build_random_rooms(rng);
         mb.build_corridors(rng);
         mb.player_start = mb.rooms[0].center();
+        let dijkstra_map = DijkstraMap::new(
+            SCREEN_WIDTH,
+            SCREEN_HEIGHT,
+            &[mb.map.point2d_to_index(mb.player_start)],
+            &mb.map,
+            1024.0,
+        );
+        const UNREACHABLE: &f32 = &f32::MAX;
+        mb.amulet_start = mb.map.index_to_point2d(
+            dijkstra_map
+                .map
+                .iter()
+                .enumerate()
+                .filter(|(_, dist)| *dist < UNREACHABLE)
+                .max_by(|a, b| a.1.partial_cmp(b.1).unwrap())
+                .unwrap()
+                .0,
+        );
         mb
     }
 

src/spawner.rs

@@ -38,6 +38,19 @@ pub fn spawn_monster(ecs: &mut World, rng: &mut RandomNumberGenerator, pos: Poin
     ));
 }
 
+pub fn spawn_amulet_of_yala(ecs: &mut World, pos: Point) {
+    ecs.push((
+        Item,
+        AmuletOfYala,
+        pos,
+        Render {
+            color: ColorPair::new(WHITE, BLACK),
+            glyph: to_cp437('|'),
+        },
+        Name("Amulet of Yala".to_string()),
+    ));
+}
+
 fn goblin() -> (i32, String, FontCharType) {
     (1, "Goblin".to_string(), to_cp437('g'))
 }

src/systems/end_turn.rs

@@ -2,9 +2,13 @@ use crate::prelude::*;
 
 #[system]
 #[read_component(Health)]
+#[read_component(Point)]
 #[read_component(Player)]
+#[read_component(AmuletOfYala)]
 pub fn end_turn(ecs: &SubWorld, #[resource] turn_state: &mut TurnState) {
-    let mut player_hp = <&Health>::query().filter(component::<Player>());
+    let mut player_hp = <(&Health, &Point)>::query().filter(component::<Player>());
+    let mut amulet = <&Point>::query().filter(component::<AmuletOfYala>());
+    let amulet_pos = amulet.iter(ecs).next().unwrap();
     let current_state = *turn_state;
     let mut new_state = match current_state {
         TurnState::AwaitingInput => return,
@@ -13,10 +17,13 @@ pub fn end_turn(ecs: &SubWorld, #[resource] turn_state: &mut TurnState) {
         _ => current_state,
     };
 
-    player_hp.iter(ecs).for_each(|hp| {
+    player_hp.iter(ecs).for_each(|(hp, pos)| {
         if hp.current < 1 {
             new_state = TurnState::GameOver;
         }
+        if pos == amulet_pos {
+            new_state = TurnState::Victory;
+        }
     });
 
     *turn_state = new_state;

src/turn_state.rs

@@ -4,4 +4,5 @@ pub enum TurnState {
     PlayerTurn,
     MonsterTurn,
     GameOver,
+    Victory,
 }