Allow multi-tile sized entities

src/ai/adjacent_ai_system.rs

@@ -1,6 +1,6 @@
 use ::specs::prelude::*;
 
-use crate::components::{Faction, MyTurn, Position, WantsToMelee};
+use crate::components::{Faction, MyTurn, Position, TileSize, WantsToMelee};
 use crate::raws::{self, Reaction, RAWS};
 use crate::{spatial, Map};
 
@@ -16,10 +16,11 @@ impl<'a> System<'a> for AdjacentAI {
         WriteStorage<'a, WantsToMelee>,
         Entities<'a>,
         ReadExpect<'a, Entity>,
+        ReadStorage<'a, TileSize>,
     );
 
     fn run(&mut self, data: Self::SystemData) {
-        let (mut turns, factions, positions, map, mut want_melee, entities, player) = data;
+        let (mut turns, factions, positions, map, mut want_melee, entities, player, sizes) = data;
 
         let mut turn_done: Vec<Entity> = Vec::new();
         for (entity, _turn, my_faction, pos) in (&entities, &turns, &factions, &positions).join() {
@@ -29,66 +30,88 @@ impl<'a> System<'a> for AdjacentAI {
                 let w = map.width;
                 let h = map.height;
 
-                // Add possible reactions to adjacents for each direction
+                if let Some(size) = sizes.get(entity) {
-                if pos.x > 0 {
+                    use crate::rect::Rect;
-                    evaluate(idx - 1, &map, &factions, &my_faction.name, &mut reactions);
+                    let mob_rect = Rect::new(pos.x, pos.y, size.x, size.y).get_all_tiles();
-                }
+                    let parent_rect = Rect::new(pos.x - 1, pos.y - 1, size.x + 2, size.y + 2);
-                if pos.x < w - 1 {
+                    parent_rect
-                    evaluate(idx + 1, &map, &factions, &my_faction.name, &mut reactions);
+                        .get_all_tiles()
-                }
+                        .iter()
-                if pos.y > 0 {
+                        .filter(|t| !mob_rect.contains(t))
-                    evaluate(
+                        .for_each(|t| {
-                        idx - w as usize,
+                            if t.0 > 0 && t.0 < w - 1 && t.1 > 0 && t.1 < h - 1 {
-                        &map,
+                                let target_idx = map.xy_idx(t.0, t.1);
-                        &factions,
+                                evaluate(
-                        &my_faction.name,
+                                    target_idx,
-                        &mut reactions,
+                                    &map,
-                    );
+                                    &factions,
-                }
+                                    &my_faction.name,
-                if pos.y < h - 1 {
+                                    &mut reactions,
-                    evaluate(
+                                );
-                        idx + w as usize,
+                            }
-                        &map,
+                        })
-                        &factions,
+                } else {
-                        &my_faction.name,
+                    // Add possible reactions to adjacents for each direction
-                        &mut reactions,
+                    if pos.x > 0 {
-                    );
+                        evaluate(idx - 1, &map, &factions, &my_faction.name, &mut reactions);
-                }
+                    }
-                if pos.y > 0 && pos.x > 0 {
+                    if pos.x < w - 1 {
-                    evaluate(
+                        evaluate(idx + 1, &map, &factions, &my_faction.name, &mut reactions);
-                        (idx - w as usize) - 1,
+                    }
-                        &map,
+                    if pos.y > 0 {
-                        &factions,
+                        evaluate(
-                        &my_faction.name,
+                            idx - w as usize,
-                        &mut reactions,
+                            &map,
-                    );
+                            &factions,
-                }
+                            &my_faction.name,
-                if pos.y > 0 && pos.x < w - 1 {
+                            &mut reactions,
-                    evaluate(
+                        );
-                        (idx - w as usize) + 1,
+                    }
-                        &map,
+                    if pos.y < h - 1 {
-                        &factions,
+                        evaluate(
-                        &my_faction.name,
+                            idx + w as usize,
-                        &mut reactions,
+                            &map,
-                    );
+                            &factions,
-                }
+                            &my_faction.name,
-                if pos.y < h - 1 && pos.x > 0 {
+                            &mut reactions,
-                    evaluate(
+                        );
-                        (idx + w as usize) - 1,
+                    }
-                        &map,
+                    if pos.y > 0 && pos.x > 0 {
-                        &factions,
+                        evaluate(
-                        &my_faction.name,
+                            (idx - w as usize) - 1,
-                        &mut reactions,
+                            &map,
-                    );
+                            &factions,
-                }
+                            &my_faction.name,
-                if pos.y < h - 1 && pos.x < w - 1 {
+                            &mut reactions,
-                    evaluate(
+                        );
-                        (idx + w as usize) + 1,
+                    }
-                        &map,
+                    if pos.y > 0 && pos.x < w - 1 {
-                        &factions,
+                        evaluate(
-                        &my_faction.name,
+                            (idx - w as usize) + 1,
-                        &mut reactions,
+                            &map,
-                    );
+                            &factions,
+                            &my_faction.name,
+                            &mut reactions,
+                        );
+                    }
+                    if pos.y < h - 1 && pos.x > 0 {
+                        evaluate(
+                            (idx + w as usize) - 1,
+                            &map,
+                            &factions,
+                            &my_faction.name,
+                            &mut reactions,
+                        );
+                    }
+                    if pos.y < h - 1 && pos.x < w - 1 {
+                        evaluate(
+                            (idx + w as usize) + 1,
+                            &map,
+                            &factions,
+                            &my_faction.name,
+                            &mut reactions,
+                        );
+                    }
                 }
 
                 let mut done = false;

src/ai/chase_ai_system.rs

@@ -2,7 +2,7 @@ use std::collections::HashMap;
 
 use ::specs::prelude::*;
 
-use crate::components::{ApplyMove, Chasing, MyTurn, Position};
+use crate::components::{ApplyMove, Chasing, MyTurn, Position, TileSize};
 use crate::Map;
 
 pub struct ChaseAI {}
@@ -16,10 +16,13 @@ impl<'a> System<'a> for ChaseAI {
         ReadExpect<'a, Map>,
         Entities<'a>,
         WriteStorage<'a, ApplyMove>,
+        ReadStorage<'a, TileSize>,
     );
 
     fn run(&mut self, data: Self::SystemData) {
-        let (mut turns, mut chasing, positions, map, entities, mut apply_move) = data;
+        use ::rltk::a_star_search;
+
+        let (mut turns, mut chasing, positions, map, entities, mut apply_move, sizes) = data;
 
         let mut targets: HashMap<Entity, (i32, i32)> = HashMap::new();
         let mut end_chase: Vec<Entity> = Vec::new();
@@ -40,11 +43,23 @@ impl<'a> System<'a> for ChaseAI {
         for (entity, pos, _chase, _myturn) in (&entities, &positions, &chasing, &turns).join() {
             turn_done.push(entity);
             let target_pos = targets[&entity];
-            let path = ::rltk::a_star_search(
+            let path;
-                map.xy_idx(pos.x, pos.y) as i32,
+
-                map.xy_idx(target_pos.0, target_pos.1) as i32,
+            if let Some(size) = sizes.get(entity) {
-                &*map,
+                let mut map_copy = map.clone();
-            );
+                map_copy.populate_blocked_multi(size.x, size.y);
+                path = a_star_search(
+                    map_copy.xy_idx(pos.x, pos.y) as i32,
+                    map_copy.xy_idx(target_pos.0, target_pos.1) as i32,
+                    &map_copy,
+                );
+            } else {
+                path = a_star_search(
+                    map.xy_idx(pos.x, pos.y) as i32,
+                    map.xy_idx(target_pos.0, target_pos.1) as i32,
+                    &*map,
+                );
+            }
 
             if path.success && path.steps.len() > 1 && path.steps.len() < 15 {
                 apply_move

src/camera.rs

@@ -2,8 +2,9 @@
 use ::rltk::{Point, Rltk};
 use ::specs::prelude::*;
 
+use crate::components::{Hidden, Position, Renderable, TileSize};
 use crate::map::tile_glyph;
-use crate::{colors, Hidden, Map, Position, Renderable};
+use crate::{colors, Map};
 
 /// Whether to render an outline of the current map's boundaries
 const SHOW_BOUNDARIES: bool = false;
@@ -58,28 +59,57 @@ pub fn render_camera(ecs: &World, ctx: &mut Rltk) {
     let renderables = ecs.read_storage::<Renderable>();
     let hidden = ecs.read_storage::<Hidden>();
     let map = ecs.fetch::<Map>();
+    let sizes = ecs.read_storage::<TileSize>();
+    let entities = ecs.entities();
 
-    let mut data = (&positions, &renderables, !&hidden)
+    let mut data = (&positions, &renderables, &entities, !&hidden)
         .join()
         .collect::<Vec<_>>();
     data.sort_by(|&a, &b| b.1.render_order.cmp(&a.1.render_order));
-    for (pos, render, _hidden) in data.iter() {
+    for (pos, render, entity, _hidden) in data.iter() {
-        let idx = map.xy_idx(pos.x, pos.y);
+        if let Some(size) = sizes.get(*entity) {
-        if map.visible_tiles[idx] {
+            for cy in 0..size.y {
-            let entity_screen_x = pos.x - min_x;
+                for cx in 0..size.x {
-            let entity_screen_y = pos.y - min_y;
+                    let tile_x = cx + pos.x;
-            if entity_screen_x > 0
+                    let tile_y = cy + pos.y;
-                && entity_screen_x < map_width
+                    let idx = map.xy_idx(tile_x, tile_y);
-                && entity_screen_y > 0
+                    if map.visible_tiles[idx] {
-                && entity_screen_y < map_height
+                        let entity_screen_x = (cx + pos.x) - min_x;
-            {
+                        let entity_screen_y = (cy + pos.y) - min_y;
-                ctx.set(
+                        if entity_screen_x > 0
-                    entity_screen_x,
+                            && entity_screen_x < map_width
-                    entity_screen_y,
+                            && entity_screen_y > 0
-                    render.fg,
+                            && entity_screen_y < map_height
-                    render.bg,
+                        {
-                    render.glyph,
+                            ctx.set(
-                );
+                                entity_screen_x + 1,
+                                entity_screen_y + 1,
+                                render.fg,
+                                render.bg,
+                                render.glyph,
+                            );
+                        }
+                    }
+                }
+            }
+        } else {
+            let idx = map.xy_idx(pos.x, pos.y);
+            if map.visible_tiles[idx] {
+                let entity_screen_x = pos.x - min_x;
+                let entity_screen_y = pos.y - min_y;
+                if entity_screen_x > 0
+                    && entity_screen_x < map_width
+                    && entity_screen_y > 0
+                    && entity_screen_y < map_height
+                {
+                    ctx.set(
+                        entity_screen_x,
+                        entity_screen_y,
+                        render.fg,
+                        render.bg,
+                        render.glyph,
+                    );
+                }
             }
         }
     }

src/components.rs

@@ -515,3 +515,9 @@ pub struct SpecialAbility {
 pub struct SpecialAbilities {
     pub abilities: Vec<SpecialAbility>,
 }
+
+#[derive(Component, ConvertSaveload, Clone)]
+pub struct TileSize {
+    pub x: i32,
+    pub y: i32,
+}

src/effects.rs

@@ -5,7 +5,7 @@ mod particles;
 mod targeting;
 mod triggers;
 
-use std::collections::VecDeque;
+use std::collections::{HashSet, VecDeque};
 use std::sync::Mutex;
 
 use ::rltk::{FontCharType, RGB};
@@ -85,6 +85,7 @@ pub struct EffectSpawner {
     pub creator: Option<Entity>,
     pub effect_type: EffectType,
     pub targets: Targets,
+    dedupe: HashSet<Entity>,
 }
 
 /// Adds an effect to the queue
@@ -93,21 +94,22 @@ pub fn add_effect(creator: Option<Entity>, effect_type: EffectType, targets: Tar
         creator,
         effect_type,
         targets,
+        dedupe: HashSet::new(),
     });
 }
 
 pub fn run_effects_queue(ecs: &mut World) {
     loop {
         let effect = EFFECT_QUEUE.lock().unwrap().pop_front();
-        if let Some(effect) = effect {
+        if let Some(mut effect) = effect {
-            target_applicator(ecs, &effect);
+            target_applicator(ecs, &mut effect);
         } else {
             break;
         }
     }
 }
 
-fn target_applicator(ecs: &mut World, effect: &EffectSpawner) {
+fn target_applicator(ecs: &mut World, effect: &mut EffectSpawner) {
     if let EffectType::ItemUse { item } = effect.effect_type {
         triggers::item_trigger(effect.creator, item, &effect.targets, ecs);
     } else if let EffectType::SpellUse { spell } = effect.effect_type {
@@ -115,7 +117,7 @@ fn target_applicator(ecs: &mut World, effect: &EffectSpawner) {
     } else if let EffectType::TriggerFire { trigger } = effect.effect_type {
         triggers::trigger(effect.creator, trigger, &effect.targets, ecs);
     } else {
-        match &effect.targets {
+        match &effect.targets.clone() {
             Targets::Tile { tile_idx } => affect_tile(ecs, effect, *tile_idx),
             Targets::Tiles { tiles } => tiles
                 .iter()
@@ -143,7 +145,7 @@ fn tile_effect_hits_entities(effect: &EffectType) -> bool {
     )
 }
 
-fn affect_tile(ecs: &mut World, effect: &EffectSpawner, tile_idx: i32) {
+fn affect_tile(ecs: &mut World, effect: &mut EffectSpawner, tile_idx: i32) {
     if tile_effect_hits_entities(&effect.effect_type) {
         spatial::for_each_tile_content(tile_idx as usize, |entity| {
             affect_entity(ecs, effect, entity)
@@ -157,7 +159,11 @@ fn affect_tile(ecs: &mut World, effect: &EffectSpawner, tile_idx: i32) {
     }
 }
 
-fn affect_entity(ecs: &mut World, effect: &EffectSpawner, target: Entity) {
+fn affect_entity(ecs: &mut World, effect: &mut EffectSpawner, target: Entity) {
+    if effect.dedupe.contains(&target) {
+        return;
+    }
+    effect.dedupe.insert(target);
     match &effect.effect_type {
         EffectType::Damage { .. } => damage::inflict_damage(ecs, effect, target),
         EffectType::EntityDeath => damage::death(ecs, effect, target),

src/effects/damage.rs

@@ -13,6 +13,11 @@ pub fn inflict_damage(ecs: &mut World, damage: &EffectSpawner, target: Entity) {
     let mut pools = ecs.write_storage::<Pools>();
     if let Some(pool) = pools.get_mut(target) {
         if !pool.god_mode {
+            if let Some(creator) = damage.creator {
+                if creator == target {
+                    return;
+                }
+            }
             if let EffectType::Damage { amount } = damage.effect_type {
                 pool.hit_points.current -= amount;
                 add_effect(None, EffectType::Bloodstain, Targets::Single { target });

src/gui/tooltip.rs

@@ -1,7 +1,7 @@
-use ::rltk::Rltk;
+use ::rltk::{Point, Rltk};
 use ::specs::prelude::*;
 
-use crate::components::{Attributes, Duration, Hidden, Name, Pools, Position, StatusEffect};
+use crate::components::{Attributes, Duration, Hidden, Name, Pools, StatusEffect};
 use crate::{camera, colors, Map};
 
 struct Tooltip {
@@ -54,21 +54,23 @@ impl Tooltip {
 }
 
 pub(super) fn draw_tooltips(ecs: &World, ctx: &mut Rltk) {
-    use rltk::to_cp437;
+    use ::rltk::{to_cp437, Algorithm2D};
 
     let (min_x, _max_x, min_y, _max_y) = camera::get_screen_bounds(ecs, ctx);
     let map = ecs.fetch::<Map>();
-    let positions = ecs.read_storage::<Position>();
     let hidden = ecs.read_storage::<Hidden>();
     let attributes = ecs.read_storage::<Attributes>();
     let pools = ecs.read_storage::<Pools>();
-    let entities = ecs.entities();
 
     let mouse_pos = ctx.mouse_pos();
     let mut mouse_map_pos = mouse_pos;
     mouse_map_pos.0 += min_x;
     mouse_map_pos.1 += min_y;
 
+    if mouse_pos.0 < 1 || mouse_pos.0 > 49 || mouse_pos.1 < 1 || mouse_pos.1 > 40 {
+        return;
+    }
+
     if mouse_map_pos.0 >= map.width - 1
         || mouse_map_pos.1 >= map.height - 1
         || mouse_map_pos.0 < 1
@@ -77,68 +79,74 @@ pub(super) fn draw_tooltips(ecs: &World, ctx: &mut Rltk) {
         return;
     }
 
-    if !map.visible_tiles[map.xy_idx(mouse_map_pos.0, mouse_map_pos.1)] {
+    if !map.in_bounds(Point::new(mouse_map_pos.0, mouse_map_pos.1)) {
+        return;
+    }
+    let mouse_idx = map.xy_idx(mouse_map_pos.0, mouse_map_pos.1);
+    if !map.visible_tiles[mouse_idx] {
         return;
     }
 
     let mut tip_boxes: Vec<Tooltip> = Vec::new();
-    for (entity, position, _hidden) in (&entities, &positions, !&hidden).join() {
+    crate::spatial::for_each_tile_content(mouse_idx, |entity| {
-        if position.x == mouse_map_pos.0 && position.y == mouse_map_pos.1 {
+        if hidden.get(entity).is_some() {
-            let mut tip = Tooltip::new();
+            return;
-            tip.add(super::get_item_display_name(ecs, entity));
-
-            // Comment on attributes
-            if let Some(attr) = attributes.get(entity) {
-                let mut s = String::new();
-                if attr.might.bonus < 0 {
-                    s += "Weak. "
-                }
-                if attr.might.bonus > 0 {
-                    s += "String. "
-                }
-                if attr.quickness.bonus < 0 {
-                    s += "Clumsy. "
-                }
-                if attr.quickness.bonus > 0 {
-                    s += "Agile. "
-                }
-                if attr.fitness.bonus < 0 {
-                    s += "Unhealthy. "
-                }
-                if attr.fitness.bonus > 0 {
-                    s += "Healthy. "
-                }
-                if attr.intelligence.bonus < 0 {
-                    s += "Unintelligent. "
-                }
-                if attr.intelligence.bonus > 0 {
-                    s += "Smart. "
-                }
-                if s.is_empty() {
-                    s = "Quite Average".to_string();
-                }
-
-                tip.add(s);
-            }
-
-            // Comment on pools
-            if let Some(stat) = pools.get(entity) {
-                tip.add(format!("Level: {}", stat.level));
-            }
-
-            // Status effects
-            let statuses = ecs.read_storage::<StatusEffect>();
-            let durations = ecs.read_storage::<Duration>();
-            let names = ecs.read_storage::<Name>();
-            for (status, duration, name) in (&statuses, &durations, &names).join() {
-                if status.target == entity {
-                    tip.add(format!("{} ({})", name.name, duration.turns));
-                }
-            }
-
-            tip_boxes.push(tip);
         }
-    }
+
+        let mut tip = Tooltip::new();
+        tip.add(super::get_item_display_name(ecs, entity));
+
+        // Comment on attributes
+        if let Some(attr) = attributes.get(entity) {
+            let mut s = String::new();
+            if attr.might.bonus < 0 {
+                s += "Weak. "
+            }
+            if attr.might.bonus > 0 {
+                s += "String. "
+            }
+            if attr.quickness.bonus < 0 {
+                s += "Clumsy. "
+            }
+            if attr.quickness.bonus > 0 {
+                s += "Agile. "
+            }
+            if attr.fitness.bonus < 0 {
+                s += "Unhealthy. "
+            }
+            if attr.fitness.bonus > 0 {
+                s += "Healthy. "
+            }
+            if attr.intelligence.bonus < 0 {
+                s += "Unintelligent. "
+            }
+            if attr.intelligence.bonus > 0 {
+                s += "Smart. "
+            }
+            if s.is_empty() {
+                s = "Quite Average".to_string();
+            }
+
+            tip.add(s);
+        }
+
+        // Comment on pools
+        if let Some(stat) = pools.get(entity) {
+            tip.add(format!("Level: {}", stat.level));
+        }
+
+        // Status effects
+        let statuses = ecs.read_storage::<StatusEffect>();
+        let durations = ecs.read_storage::<Duration>();
+        let names = ecs.read_storage::<Name>();
+        for (status, duration, name) in (&statuses, &durations, &names).join() {
+            if status.target == entity {
+                tip.add(format!("{} ({})", name.name, duration.turns));
+            }
+        }
+
+        tip_boxes.push(tip);
+    });
 
     if tip_boxes.is_empty() {
         return;

src/main.rs

@@ -145,6 +145,7 @@ fn init_state() -> State {
         StatusEffect,
         TeachesSpell,
         TeleportTo,
+        TileSize,
         TownPortal,
         Vendor,
         Viewshed,

src/map.rs

@@ -50,6 +50,31 @@ impl Map {
         spatial::populate_blocked_from_map(self);
     }
 
+    pub fn populate_blocked_multi(&mut self, width: i32, height: i32) {
+        self.populate_blocked();
+        for y in 1..self.height - 1 {
+            for x in 1..self.width - 1 {
+                let idx = self.xy_idx(x, y);
+                if !spatial::is_blocked(idx) {
+                    for cy in 0..height {
+                        for cx in 0..width {
+                            let tx = x + cx;
+                            let ty = y + cy;
+                            if tx < self.width - 1 && ty < self.height - 1 {
+                                let tidx = self.xy_idx(tx, ty);
+                                if spatial::is_blocked(tidx) {
+                                    spatial::set_blocked(idx, true);
+                                }
+                            } else {
+                                spatial::set_blocked(idx, true);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
     pub fn clear_content_index(&mut self) {
         spatial::clear();
     }

src/map_indexing_system.rs

@@ -1,21 +1,23 @@
 use ::specs::prelude::*;
 
-use crate::components::{BlocksTile, Pools, Position};
+use crate::components::{BlocksTile, Pools, Position, TileSize};
 use crate::{spatial, Map};
 
 pub struct MapIndexingSystem {}
 
 impl<'a> System<'a> for MapIndexingSystem {
+    #[allow(clippy::type_complexity)]
     type SystemData = (
         ReadExpect<'a, Map>,
         ReadStorage<'a, Position>,
         ReadStorage<'a, BlocksTile>,
         ReadStorage<'a, Pools>,
+        ReadStorage<'a, TileSize>,
         Entities<'a>,
     );
 
     fn run(&mut self, data: Self::SystemData) {
-        let (map, position, blockers, pools, entities) = data;
+        let (map, position, blockers, pools, sizes, entities) = data;
 
         spatial::clear();
         spatial::populate_blocked_from_map(&*map);
@@ -29,8 +31,21 @@ impl<'a> System<'a> for MapIndexingSystem {
             }
 
             if alive {
-                let idx = map.xy_idx(position.x, position.y);
+                if let Some(size) = sizes.get(entity) {
-                spatial::index_entity(entity, idx, blockers.get(entity).is_some());
+                    // Multi-tile
+                    for y in position.y..position.y + size.y {
+                        for x in position.x..position.x + size.x {
+                            if x > 0 && x < map.width - 1 && y > 0 && y < map.height - 1 {
+                                let idx = map.xy_idx(x, y);
+                                spatial::index_entity(entity, idx, blockers.get(entity).is_some());
+                            }
+                        }
+                    }
+                } else {
+                    // Single tile
+                    let idx = map.xy_idx(position.x, position.y);
+                    spatial::index_entity(entity, idx, blockers.get(entity).is_some());
+                }
             }
         }
     }

src/raws/item_structs.rs

@@ -23,6 +23,8 @@ pub struct Renderable {
     pub fg: String,
     pub bg: String,
     pub order: i32,
+    pub x_size: Option<i32>,
+    pub y_size: Option<i32>,
 }
 
 #[derive(Deserialize, Debug)]

src/raws/rawmaster.rs

@@ -497,6 +497,12 @@ pub fn spawn_named_mob(
         // Renderable
         if let Some(renderable) = &mob_template.renderable {
             eb = eb.with(get_renderable_component(renderable));
+            if renderable.x_size.is_some() || renderable.y_size.is_some() {
+                eb = eb.with(TileSize {
+                    x: renderable.x_size.unwrap_or(1),
+                    y: renderable.y_size.unwrap_or(1),
+                });
+            }
         }
 
         eb = eb.with(Name::from(&mob_template.name));

src/rect.rs

@@ -1,4 +1,6 @@
 //! Four points, one plane, 90° angles
+use std::collections::HashSet;
+
 use ::serde::{Deserialize, Serialize};
 
 #[derive(PartialEq, Copy, Clone, Serialize, Deserialize)]
@@ -27,4 +29,16 @@ impl Rect {
     pub fn center(&self) -> (i32, i32) {
         ((self.x1 + self.x2) / 2, (self.y1 + self.y2) / 2)
     }
+
+    pub fn get_all_tiles(&self) -> HashSet<(i32, i32)> {
+        let mut result = HashSet::new();
+
+        for y in self.y1..self.y2 {
+            for x in self.x1..self.x2 {
+                result.insert((x, y));
+            }
+        }
+
+        result
+    }
 }

src/saveload_system.rs

@@ -123,6 +123,7 @@ pub fn save_game(ecs: &mut World) {
             StatusEffect,
             TeachesSpell,
             TeleportTo,
+            TileSize,
             TownPortal,
             Vendor,
             Viewshed,
@@ -254,6 +255,7 @@ pub fn load_game(ecs: &mut World) {
             StatusEffect,
             TeachesSpell,
             TeleportTo,
+            TileSize,
             TownPortal,
             Vendor,
             Viewshed,

src/spatial.rs

@@ -60,6 +60,11 @@ pub fn is_blocked(idx: usize) -> bool {
     lock.blocked[idx].0 || lock.blocked[idx].1
 }
 
+pub fn set_blocked(idx: usize, blocked: bool) {
+    let mut lock = SPATIAL_MAP.lock().unwrap();
+    lock.blocked[idx] = (lock.blocked[idx].0, blocked);
+}
+
 pub fn for_each_tile_content<F>(idx: usize, mut f: F)
 where
     F: FnMut(Entity),
@@ -84,6 +89,12 @@ where
     RunState::AwaitingInput
 }
 
+#[allow(dead_code)]
+pub fn get_tile_content_clone(idx: usize) -> Vec<Entity> {
+    let lock = SPATIAL_MAP.lock().unwrap();
+    lock.tile_content[idx].iter().map(|(e, _)| *e).collect()
+}
+
 /// Move an entity on the map from `moving_from` index to the `moving_to` index.
 /// This also recalculates if these two tiles are blocked based on the entities
 /// within these tiles.