Added chapter 2.9

src/components.rs

@@ -1,4 +1,4 @@
-use rltk::RGB;
+use rltk::{Point, RGB};
 use specs::prelude::*;
 use specs_derive::*;
 
@@ -88,8 +88,9 @@ pub struct WantsToPickupItem {
 }
 
 #[derive(Component, Debug, Clone)]
-pub struct WantsToDrinkPotion {
+pub struct WantsToUseItem {
-    pub potion: Entity,
+    pub item: Entity,
+    pub target: Option<Point>,
 }
 
 #[derive(Component, Debug, Clone)]
@@ -97,4 +98,30 @@ pub struct WantsToDropItem {
     pub item: Entity,
 }
 
+#[derive(Component, Debug)]
+pub struct Consumable {}
 
+#[derive(Component, Debug)]
+pub struct ProvidesHealing {
+    pub heal_amount: i32,
+}
+
+#[derive(Component, Debug)]
+pub struct Ranged {
+    pub range: i32,
+}
+
+#[derive(Component, Debug)]
+pub struct InflictsDamage {
+    pub damage: i32,
+}
+
+#[derive(Component, Debug)]
+pub struct AreaOfEffect {
+    pub radius: i32,
+}
+
+#[derive(Component, Debug)]
+pub struct Confusion {
+    pub turns: i32,
+}

src/gui.rs

@@ -1,14 +1,14 @@
-use rltk::{BTerm, Point, VirtualKeyCode};
-use rltk::RGB;
 use rltk::Rltk;
+use rltk::RGB;
+use rltk::{BTerm, Point, VirtualKeyCode};
 use specs::prelude::*;
 
-use crate::{CombatStats, InBackpack, State};
 use crate::gamelog::GameLog;
 use crate::Map;
 use crate::Name;
 use crate::Player;
 use crate::Position;
+use crate::{CombatStats, InBackpack, State, Viewshed};
 
 pub fn draw_ui(ecs: &World, ctx: &mut Rltk) {
     ctx.draw_box(
@@ -230,18 +230,19 @@ pub fn show_inventory(gs: &mut State, ctx: &mut Rltk) -> (ItemMenuResult, Option
 
     match ctx.key {
         None => (ItemMenuResult::NoResponse, None),
-        Some(key) => {
+        Some(key) => match key {
-            match key {
+            VirtualKeyCode::Escape => (ItemMenuResult::Cancel, None),
-                VirtualKeyCode::Escape => { (ItemMenuResult::Cancel, None) }
             _ => {
                 let selection = rltk::letter_to_option(key);
                 if selection > -1 && selection < count as i32 {
-                        return (ItemMenuResult::Selected, Some(equippable[selection as usize]));
+                    return (
+                        ItemMenuResult::Selected,
+                        Some(equippable[selection as usize]),
+                    );
                 }
                 (ItemMenuResult::NoResponse, None)
             }
-            }
+        },
-        }
     }
 }
 
@@ -251,20 +252,62 @@ pub fn drop_item_menu(gs: &mut State, ctx: &mut Rltk) -> (ItemMenuResult, Option
     let backpack = gs.ecs.read_storage::<InBackpack>();
     let entities = gs.ecs.entities();
 
-    let inventory = (&backpack, &names).join().filter(|item| item.0.owner == *player_entity);
+    let inventory = (&backpack, &names)
+        .join()
+        .filter(|item| item.0.owner == *player_entity);
     let count = inventory.count();
 
     let mut y = (25 - (count / 2)) as i32;
-    ctx.draw_box(15, y - 2, 31, (count + 3) as i32, RGB::named(rltk::WHITE), RGB::named(rltk::BLACK));
+    ctx.draw_box(
-    ctx.print_color(18, y - 2, RGB::named(rltk::YELLOW), RGB::named(rltk::BLACK), "Drop Which Item?");
+        15,
-    ctx.print_color(18, y + count as i32 + 1, RGB::named(rltk::YELLOW), RGB::named(rltk::BLACK), "ESCAPE to cancel");
+        y - 2,
+        31,
+        (count + 3) as i32,
+        RGB::named(rltk::WHITE),
+        RGB::named(rltk::BLACK),
+    );
+    ctx.print_color(
+        18,
+        y - 2,
+        RGB::named(rltk::YELLOW),
+        RGB::named(rltk::BLACK),
+        "Drop Which Item?",
+    );
+    ctx.print_color(
+        18,
+        y + count as i32 + 1,
+        RGB::named(rltk::YELLOW),
+        RGB::named(rltk::BLACK),
+        "ESCAPE to cancel",
+    );
 
     let mut equippable: Vec<Entity> = Vec::new();
     let mut j = 0;
-    for (entity, _pack, name) in (&entities, &backpack, &names).join().filter(|item| item.1.owner == *player_entity) {
+    for (entity, _pack, name) in (&entities, &backpack, &names)
-        ctx.set(17, y, RGB::named(rltk::WHITE), RGB::named(rltk::BLACK), rltk::to_cp437('('));
+        .join()
-        ctx.set(18, y, RGB::named(rltk::YELLOW), RGB::named(rltk::BLACK), 97 + j as rltk::FontCharType);
+        .filter(|item| item.1.owner == *player_entity)
-        ctx.set(19, y, RGB::named(rltk::WHITE), RGB::named(rltk::BLACK), rltk::to_cp437(')'));
+    {
+        ctx.set(
+            17,
+            y,
+            RGB::named(rltk::WHITE),
+            RGB::named(rltk::BLACK),
+            rltk::to_cp437('('),
+        );
+        ctx.set(
+            18,
+            y,
+            RGB::named(rltk::YELLOW),
+            RGB::named(rltk::BLACK),
+            97 + j as rltk::FontCharType,
+        );
+        ctx.set(
+            19,
+            y,
+            RGB::named(rltk::WHITE),
+            RGB::named(rltk::BLACK),
+            rltk::to_cp437(')'),
+        );
 
         ctx.print(21, y, &name.name.to_string());
         equippable.push(entity);
@@ -274,17 +317,74 @@ pub fn drop_item_menu(gs: &mut State, ctx: &mut Rltk) -> (ItemMenuResult, Option
 
     match ctx.key {
         None => (ItemMenuResult::NoResponse, None),
-        Some(key) => {
+        Some(key) => match key {
-            match key {
+            VirtualKeyCode::Escape => (ItemMenuResult::Cancel, None),
-                VirtualKeyCode::Escape => { (ItemMenuResult::Cancel, None) }
             _ => {
                 let selection = rltk::letter_to_option(key);
                 if selection > -1 && selection < count as i32 {
-                        return (ItemMenuResult::Selected, Some(equippable[selection as usize]));
+                    return (
+                        ItemMenuResult::Selected,
+                        Some(equippable[selection as usize]),
+                    );
                 }
                 (ItemMenuResult::NoResponse, None)
             }
-            }
+        },
-        }
     }
 }
+
+pub fn ranged_target(
+    gs: &mut State,
+    ctx: &mut Rltk,
+    range: i32,
+) -> (ItemMenuResult, Option<Point>) {
+    let player_entity = gs.ecs.fetch::<Entity>();
+    let player_pos = gs.ecs.fetch::<Point>();
+    let viewshed = gs.ecs.read_storage::<Viewshed>();
+
+    ctx.print_color(
+        5,
+        0,
+        RGB::named(rltk::YELLOW),
+        RGB::named(rltk::BLACK),
+        "Select Target:",
+    );
+
+    let mut available_cells = Vec::new();
+    let visible = viewshed.get(*player_entity);
+    if let Some(visible) = visible {
+        for idx in visible.visible_tiles.iter() {
+            let distance = rltk::DistanceAlg::Pythagoras.distance2d(*player_pos, *idx);
+            if distance <= range as f32 {
+                ctx.set_bg(idx.x, idx.y, RGB::named(rltk::BLUE));
+                available_cells.push(idx);
+            }
+        }
+    } else {
+        return (ItemMenuResult::Cancel, None);
+    }
+
+    let mouse_pos = ctx.mouse_pos();
+    let mut valid_target = false;
+    for idx in available_cells.iter() {
+        if idx.x == mouse_pos.0 && idx.y == mouse_pos.1 {
+            valid_target = true;
+        }
+    }
+    if valid_target {
+        ctx.set_bg(mouse_pos.0, mouse_pos.1, RGB::named(rltk::CYAN));
+        if ctx.left_click {
+            return (
+                ItemMenuResult::Selected,
+                Some(Point::new(mouse_pos.0, mouse_pos.1)),
+            );
+        }
+    } else {
+        ctx.set_bg(mouse_pos.0, mouse_pos.1, RGB::named(rltk::RED));
+        if ctx.left_click {
+            return (ItemMenuResult::Cancel, None);
+        }
+    }
+
+    (ItemMenuResult::NoResponse, None)
+}

src/inventory_system.rs

@@ -1,9 +1,10 @@
 use rltk::Rltk;
 use specs::prelude::*;
 
-use crate::{CombatStats, InBackpack, Name, Position, Potion, State, WantsToDrinkPotion, WantsToDropItem, WantsToPickupItem};
+use crate::{AreaOfEffect, CombatStats, Confusion, Consumable, InBackpack, InflictsDamage, Map, Name, Position, Potion, ProvidesHealing, Ranged, State, SufferDamage, WantsToDropItem, WantsToPickupItem, WantsToUseItem};
 use crate::gamelog::GameLog;
 use crate::gui::ItemMenuResult;
+use crate::spawner::{confusion_scroll, player};
 
 pub struct ItemCollectionSystem {}
 
@@ -44,37 +45,136 @@ impl<'a> System<'a> for ItemCollectionSystem {
     }
 }
 
-pub struct PotionUseSystem {}
+pub struct ItemUseSystem {}
 
-impl<'a> System<'a> for PotionUseSystem {
+impl<'a> System<'a> for ItemUseSystem {
     type SystemData = (
         ReadExpect<'a, Entity>,
         WriteExpect<'a, GameLog>,
         Entities<'a>,
-        WriteStorage<'a, WantsToDrinkPotion>,
+        WriteStorage<'a, WantsToUseItem>,
         ReadStorage<'a, Name>,
-        ReadStorage<'a, Potion>,
+        ReadStorage<'a, Consumable>,
-        WriteStorage<'a, CombatStats>
+        WriteStorage<'a, CombatStats>,
+        ReadStorage<'a, ProvidesHealing>,
+        ReadStorage<'a, InflictsDamage>,
+        ReadStorage<'a, Ranged>,
+        ReadExpect<'a, Map>,
+        WriteStorage<'a, SufferDamage>,
+        ReadStorage<'a, AreaOfEffect>,
+        WriteStorage<'a, Confusion>,
     );
 
     fn run(&mut self, data: Self::SystemData) {
-        let (player_entity, mut gamelog, entities, mut wants_drink, names, potions, mut combat_stats) = data;
+        let (
+            player_entity,
+            mut game_log,
+            entities,
+            mut wants_use,
+            names,
+            consumables,
+            mut combat_stats,
+            healing,
+            inflicts_damage,
+            ranged,
+            map,
+            mut suffer_damage,
+            aoe,
+            mut confused
+        ) = data;
 
-        for (entity, drink, stats) in (&entities, &wants_drink, &mut combat_stats).join() {
+        for (entity, use_item) in (&entities, &wants_use).join() {
-            let potion = potions.get(drink.potion);
+            let mut used_item = true;
-            match potion {
+
-                None => {}
+            let mut targets: Vec<Entity> = Vec::new();
-                Some(potion) => {
+            match use_item.target {
-                    stats.hp = i32::min(stats.max_hp, stats.hp + potion.heal_amount);
+                None => { targets.push(*player_entity) }
+                Some(target) => {
+                    let area_effect = aoe.get(use_item.item);
+                    match area_effect {
+                        None => {
+                            let idx = map.xy_idx(target.x, target.y);
+                            for mob in map.tile_content[idx].iter() {
+                                targets.push(*mob);
+                            }
+                        }
+                        Some(area_effect) => {
+                            let mut black_tiles = rltk::field_of_view(target, area_effect.radius, &*map);
+                            black_tiles.retain(|p| p.x > 0 && p.x < map.width - 1 && p.y > 0 && p.y < map.height - 1);
+                            for tile_idx in black_tiles.iter() {
+                                let idx = map.xy_idx(tile_idx.x, tile_idx.y);
+                                for mob in map.tile_content[idx].iter() {
+                                    targets.push(*mob);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+
+            if let Some(item_damages) = inflicts_damage.get(use_item.item) {
+                used_item = false;
+                for mob in targets.iter() {
+                    SufferDamage::new_damage(&mut suffer_damage, *mob, item_damages.damage);
                     if entity == *player_entity {
-                        gamelog.entries.push(format!("You drink the {}, healing {} hp.", names.get(drink.potion).unwrap().name, potion.heal_amount));
+                        let mob_name = names.get(*mob).unwrap();
+                        let item_name = names.get(use_item.item).unwrap();
+                        game_log.entries.push(format!("You use {} on {}, inflicting {} hp.", item_name.name, mob_name.name, item_damages.damage));
                     }
-                    entities.delete(drink.potion).expect("Delete failed");
+
+                    used_item = true;
+                }
+            }
+
+            if let Some(item_heals) = healing.get(use_item.item) {
+                used_item = false;
+                for target in targets.iter() {
+                    let stats = combat_stats.get_mut(*target);
+                    if let Some(stats) = stats {
+                        stats.hp = i32::min(stats.max_hp, stats.hp + item_heals.heal_amount);
+                        if entity == *player_entity {
+                            game_log.entries.push(format!(
+                                "You drink the {}, healing {} hp.",
+                                names.get(use_item.item).unwrap().name,
+                                item_heals.heal_amount
+                            ));
+                        }
+                        used_item = true;
                     }
                 }
             }
 
-        wants_drink.clear();
+            let mut add_confusion = Vec::new();
+            {
+                if let Some(caused_confusion) = confused.get(use_item.item) {
+                    used_item = false;
+                    for mob in targets.iter() {
+                        add_confusion.push((*mob, caused_confusion.turns));
+                        if entity == *player_entity {
+                            let mob_name = names.get(*mob).unwrap();
+                            let item_name = names.get(use_item.item).unwrap();
+                            game_log.entries.push(format!("You use {} on {}, confusing them.", item_name.name, mob_name.name));
+                        }
+                    }
+                }
+            }
+            for mob in add_confusion.iter() {
+                confused.insert(mob.0, Confusion { turns: mob.1 }).expect("Unable to insert status");
+            }
+
+
+            if used_item {
+                let consumable = consumables.get(use_item.item);
+                match consumable {
+                    None => {}
+                    Some(_) => {
+                        entities.delete(use_item.item).expect("Delete failed");
+                    }
+                }
+            }
+        }
+
+        wants_use.clear();
     }
 }
 
@@ -88,11 +188,19 @@ impl<'a> System<'a> for ItemDropSystem {
         WriteStorage<'a, WantsToDropItem>,
         ReadStorage<'a, Name>,
         WriteStorage<'a, Position>,
-        WriteStorage<'a, InBackpack>
+        WriteStorage<'a, InBackpack>,
     );
 
     fn run(&mut self, data: Self::SystemData) {
-        let (player_entity, mut gamelog, entities, mut wants_drop, names, mut positions, mut backpack) = data;
+        let (
+            player_entity,
+            mut game_log,
+            entities,
+            mut wants_drop,
+            names,
+            mut positions,
+            mut backpack,
+        ) = data;
 
         for (entity, to_drop) in (&entities, &wants_drop).join() {
             let mut dropper_pos: Position = Position { x: 0, y: 0 };
@@ -101,16 +209,25 @@ impl<'a> System<'a> for ItemDropSystem {
                 dropper_pos.x = dropped_pos.x;
                 dropper_pos.y = dropped_pos.y;
             }
-            positions.insert(to_drop.item, Position { x: dropper_pos.x, y: dropper_pos.y }).expect("Unable to insert position");
+            positions
+                .insert(
+                    to_drop.item,
+                    Position {
+                        x: dropper_pos.x,
+                        y: dropper_pos.y,
+                    },
+                )
+                .expect("Unable to insert position");
             backpack.remove(to_drop.item);
 
             if entity == *player_entity {
-                gamelog.entries.push(format!("You drop the {}.", names.get(to_drop.item).unwrap().name));
+                game_log.entries.push(format!(
+                    "You drop the {}.",
+                    names.get(to_drop.item).unwrap().name
+                ));
             }
         }
 
         wants_drop.clear();
     }
 }
-
-

src/main.rs

@@ -12,7 +12,7 @@ use monster_ai_system::*;
 use player::*;
 use visibility_system::*;
 
-use crate::inventory_system::{ItemCollectionSystem, ItemDropSystem, PotionUseSystem};
+use crate::inventory_system::{ItemCollectionSystem, ItemDropSystem, ItemUseSystem};
 
 mod components;
 mod damage_system;
@@ -36,6 +36,7 @@ pub enum RunState {
     MonsterTurn,
     ShowInventory,
     ShowDropItem,
+    ShowTargeting { range: i32, item: Entity },
 }
 
 pub struct State {
@@ -62,7 +63,7 @@ impl State {
         let mut inventory = ItemCollectionSystem {};
         inventory.run_now(&self.ecs);
 
-        let mut potions = PotionUseSystem {};
+        let mut potions = ItemUseSystem {};
         potions.run_now(&self.ecs);
 
         let mut drop_items = ItemDropSystem {};
@@ -122,12 +123,26 @@ impl GameState for State {
                     gui::ItemMenuResult::NoResponse => {}
                     gui::ItemMenuResult::Selected => {
                         let item_entity = result.1.unwrap();
-                        let mut intent = self.ecs.write_storage::<WantsToDrinkPotion>();
+                        let is_ranged = self.ecs.read_storage::<Ranged>();
-                        intent.insert(*self.ecs.fetch::<Entity>(), WantsToDrinkPotion { potion: item_entity }).expect("Unable to insert intent");
+                        let is_item_ranged = is_ranged.get(item_entity);
+                        if let Some(is_item_ranged) = is_item_ranged {
+                            newrunstate = RunState::ShowTargeting {
+                                range: is_item_ranged.range,
+                                item: item_entity,
+                            }
+                        } else {
+                            let mut intent = self.ecs.write_storage::<WantsToUseItem>();
+                            intent
+                                .insert(
+                                    *self.ecs.fetch::<Entity>(),
+                                    WantsToUseItem { item: item_entity, target: None },
+                                )
+                                .expect("Unable to insert intent");
                             newrunstate = RunState::PlayerTurn;
                         }
                     }
                 }
+            }
             RunState::ShowDropItem => {
                 let result = gui::drop_item_menu(self, ctx);
                 match result.0 {
@@ -136,7 +151,24 @@ impl GameState for State {
                     gui::ItemMenuResult::Selected => {
                         let item_entity = result.1.unwrap();
                         let mut intent = self.ecs.write_storage::<WantsToDropItem>();
-                        intent.insert(*self.ecs.fetch::<Entity>(), WantsToDropItem { item: item_entity }).expect("Unable to insert intent");
+                        intent
+                            .insert(
+                                *self.ecs.fetch::<Entity>(),
+                                WantsToDropItem { item: item_entity },
+                            )
+                            .expect("Unable to insert intent");
+                        newrunstate = RunState::PlayerTurn;
+                    }
+                }
+            }
+            RunState::ShowTargeting { range, item } => {
+                let result = gui::ranged_target(self, ctx, range);
+                match result.0 {
+                    gui::ItemMenuResult::Cancel => newrunstate = RunState::AwaitingInput,
+                    gui::ItemMenuResult::NoResponse => {}
+                    gui::ItemMenuResult::Selected => {
+                        let mut intent = self.ecs.write_storage::<WantsToUseItem>();
+                        intent.insert(*self.ecs.fetch::<Entity>(), WantsToUseItem { item, target: result.1 }).expect("Unable to insert intent");
                         newrunstate = RunState::PlayerTurn;
                     }
                 }
@@ -177,12 +209,17 @@ fn main() -> rltk::BError {
     gs.ecs.register::<CombatStats>();
     gs.ecs.register::<WantsToMelee>();
     gs.ecs.register::<SufferDamage>();
-    gs.ecs.register::<Potion>();
     gs.ecs.register::<Item>();
     gs.ecs.register::<InBackpack>();
     gs.ecs.register::<WantsToPickupItem>();
-    gs.ecs.register::<WantsToDrinkPotion>();
+    gs.ecs.register::<WantsToUseItem>();
     gs.ecs.register::<WantsToDropItem>();
+    gs.ecs.register::<Consumable>();
+    gs.ecs.register::<ProvidesHealing>();
+    gs.ecs.register::<Ranged>();
+    gs.ecs.register::<InflictsDamage>();
+    gs.ecs.register::<AreaOfEffect>();
+    gs.ecs.register::<Confusion>();
     let map = Map::new_map_rooms_and_corridors();
 
     let (player_x, player_y) = map.rooms[0].center();

src/monster_ai_system.rs

@@ -1,11 +1,7 @@
 use rltk::{console, Point};
 use specs::prelude::*;
 
-use crate::{
+use crate::{components::{Monster, Position, Viewshed, WantsToMelee}, Confusion, map::Map, RunState};
-    components::{Monster, Position, Viewshed, WantsToMelee},
-    map::Map,
-    RunState,
-};
 
 pub struct MonsterAI {}
 
@@ -21,6 +17,7 @@ impl<'a> System<'a> for MonsterAI {
         ReadStorage<'a, Monster>,
         WriteStorage<'a, Position>,
         WriteStorage<'a, WantsToMelee>,
+        WriteStorage<'a, Confusion>,
     );
 
     fn run(&mut self, data: Self::SystemData) {
@@ -34,6 +31,7 @@ impl<'a> System<'a> for MonsterAI {
             monster,
             mut position,
             mut wants_to_melee,
+            mut confused,
         ) = data;
 
         if *runstate != RunState::MonsterTurn {
@@ -43,6 +41,20 @@ impl<'a> System<'a> for MonsterAI {
         for (entity, mut viewshed, _monster, mut pos) in
         (&entities, &mut viewshed, &monster, &mut position).join()
         {
+            let mut can_act = true;
+
+            if let Some(i_am_confused) = confused.get_mut(entity) {
+                i_am_confused.turns -= 1;
+                if i_am_confused.turns < 1 {
+                    confused.remove(entity);
+                }
+                can_act = false;
+            }
+
+            if !can_act {
+                return;
+            }
+
             let distance =
                 rltk::DistanceAlg::Pythagoras.distance2d(Point::new(pos.x, pos.y), *player_pos);
             if distance < 1.5 {

src/player.rs

@@ -3,12 +3,12 @@ use std::cmp::{max, min};
 use rltk::{console, Point, Rltk, VirtualKeyCode};
 use specs::prelude::*;
 
+use crate::gamelog::GameLog;
 use crate::{
     components::{CombatStats, Player, Position, Viewshed, WantsToMelee},
-    Item,
+    map::{Map, TileType},
-    map::{Map, TileType}, RunState, State, WantsToPickupItem,
+    Item, RunState, State, WantsToPickupItem,
 };
-use crate::gamelog::GameLog;
 
 pub fn try_move_player(delta_x: i32, delta_y: i32, ecs: &mut World) {
     let mut positions = ecs.write_storage::<Position>();

src/spawner.rs

@@ -1,10 +1,7 @@
 use rltk::{FontCharType, RandomNumberGenerator, RGB};
 use specs::prelude::*;
 
-use crate::{
+use crate::{AreaOfEffect, BlocksTile, CombatStats, Confusion, Consumable, InflictsDamage, Item, MAP_WIDTH, MAX_ITEMS, MAX_MONSTER, Monster, Name, Player, Position, Potion, ProvidesHealing, Ranged, Renderable, Viewshed};
-    BlocksTile, CombatStats, Item, MAP_WIDTH, MAX_ITEMS, MAX_MONSTER, Monster, Name, Player, Position,
-    Potion, Renderable, Viewshed,
-};
 use crate::rect::Rect;
 
 pub fn player(ecs: &mut World, player_x: i32, player_y: i32) -> Entity {
@@ -130,7 +127,7 @@ pub fn spawn_room(ecs: &mut World, room: &Rect) {
     for idx in item_spawn_points.iter() {
         let x = *idx % MAP_WIDTH;
         let y = *idx / MAP_WIDTH;
-        health_potion(ecs, x as i32, y as i32);
+        random_item(ecs, x as i32, y as i32);
     }
 }
 
@@ -147,6 +144,80 @@ pub fn health_potion(ecs: &mut World, x: i32, y: i32) {
             name: "Health Potion".to_string(),
         })
         .with(Item {})
-        .with(Potion { heal_amount: 8 })
+        .with(Consumable {})
+        .with(ProvidesHealing { heal_amount: 8 })
         .build();
 }
+
+pub fn magic_missile_scroll(ecs: &mut World, x: i32, y: i32) {
+    ecs.create_entity()
+        .with(Position { x, y })
+        .with(Renderable {
+            glyph: rltk::to_cp437(')'),
+            fg: RGB::named(rltk::CYAN),
+            bg: RGB::named(rltk::BLACK),
+            render_order: 2,
+        })
+        .with(Name {
+            name: "Magic Missile Scroll".to_string(),
+        })
+        .with(Item {})
+        .with(Consumable {})
+        .with(Ranged { range: 6 })
+        .with(InflictsDamage { damage: 8 })
+        .build();
+}
+
+pub fn fireball_scroll(ecs: &mut World, x: i32, y: i32) {
+    ecs.create_entity()
+        .with(Position { x, y })
+        .with(Renderable {
+            glyph: rltk::to_cp437(')'),
+            fg: RGB::named(rltk::CYAN),
+            bg: RGB::named(rltk::BLACK),
+            render_order: 2,
+        })
+        .with(Name {
+            name: "Fireball Scroll".to_string(),
+        })
+        .with(Item {})
+        .with(Consumable {})
+        .with(Ranged { range: 6 })
+        .with(InflictsDamage { damage: 20 })
+        .with(AreaOfEffect { radius: 3 })
+        .build();
+}
+
+pub fn confusion_scroll(ecs: &mut World, x: i32, y: i32) {
+    ecs.create_entity()
+        .with(Position { x, y })
+        .with(Renderable {
+            glyph: rltk::to_cp437(')'),
+            fg: RGB::named(rltk::CYAN),
+            bg: RGB::named(rltk::BLACK),
+            render_order: 2,
+        })
+        .with(Name {
+            name: "Confusion Scroll".to_string(),
+        })
+        .with(Item {})
+        .with(Consumable {})
+        .with(Ranged { range: 6 })
+        .with(Confusion { turns: 4 })
+        .build();
+}
+
+
+pub fn random_item(ecs: &mut World, x: i32, y: i32) {
+    let roll: i32;
+    {
+        let mut rng = ecs.write_resource::<RandomNumberGenerator>();
+        roll = rng.roll_dice(1, 4);
+    }
+    match roll {
+        1 => health_potion(ecs, x, y),
+        2 => fireball_scroll(ecs, x, y),
+        3 => confusion_scroll(ecs, x, y),
+        _ => magic_missile_scroll(ecs, x, y),
+    }
+}