Allow identifying items by use or purchase

src/components.rs

@@ -384,6 +384,11 @@ pub struct ObfuscatedName {
     pub name: String,
 }
 
+#[derive(Component, Debug, Serialize, Deserialize, Clone)]
+pub struct IdentifiedItem {
+    pub name: String,
+}
+
 // Serialization helper code. We need to implement ConvertSaveLoad for each type that contains an
 // Entity.
 

src/gui.rs

@@ -761,8 +761,8 @@ pub fn main_menu(gs: &mut State, ctx: &mut Rltk) -> MainMenuResult {
 
     ctx.draw_box_double(24, 18, 31, 10, colors::WHEAT, colors::BLACK);
 
-    ctx.print_color_centered(20, colors::YELLOW, colors::BLACK, "Rust Roguelike Tutorial");
-    ctx.print_color_centered(21, colors::CYAN, colors::BLACK, "by Herbert Wolverson");
+    ctx.print_color_centered(20, colors::YELLOW, colors::BLACK, "Rust Roguelike");
+    ctx.print_color_centered(21, colors::CYAN, colors::BLACK, "by Timothy J. Warren");
     ctx.print_color_centered(
         22,
         colors::GRAY,

src/inventory_system.rs

@@ -3,7 +3,7 @@ use ::specs::prelude::*;
 use crate::components::*;
 use crate::game_log::GameLog;
 use crate::particle_system::ParticleBuilder;
-use crate::{colors, spatial, Map, RunState};
+use crate::{colors, raws, spatial, Map, MasterDungeonMap, RunState};
 
 pub struct ItemCollectionSystem {}
 
@@ -85,6 +85,7 @@ impl<'a> System<'a> for ItemUseSystem {
         WriteExpect<'a, RunState>,
         WriteStorage<'a, EquipmentChanged>,
         ReadStorage<'a, TownPortal>,
+        WriteStorage<'a, IdentifiedItem>,
     );
 
     #[allow(clippy::cognitive_complexity)]
@@ -114,6 +115,7 @@ impl<'a> System<'a> for ItemUseSystem {
             mut runstate,
             mut dirty,
             town_portal,
+            mut identified_item,
         ) = data;
 
         for (entity, useitem) in (&entities, &wants_use).join() {
@@ -161,6 +163,18 @@ impl<'a> System<'a> for ItemUseSystem {
                 }
             }
 
+            // Identify
+            if entity == *player_entity {
+                identified_item
+                    .insert(
+                        entity,
+                        IdentifiedItem {
+                            name: names.get(useitem.item).unwrap().name.clone(),
+                        },
+                    )
+                    .expect("Unable to identify item");
+            }
+
             // If it is equippable, then we want to equip it - and unequip whatever else was in that slot
             match equippable.get(useitem.item) {
                 None => {}
@@ -468,3 +482,37 @@ impl<'a> System<'a> for ItemRemoveSystem {
         wants_remove.clear();
     }
 }
+
+pub struct ItemIdentificationSystem {}
+
+impl<'a> System<'a> for ItemIdentificationSystem {
+    #[allow(clippy::type_complexity)]
+    type SystemData = (
+        ReadStorage<'a, Player>,
+        WriteStorage<'a, IdentifiedItem>,
+        WriteExpect<'a, MasterDungeonMap>,
+        ReadStorage<'a, Item>,
+        ReadStorage<'a, Name>,
+        WriteStorage<'a, ObfuscatedName>,
+        Entities<'a>,
+    );
+
+    fn run(&mut self, data: Self::SystemData) {
+        let (player, mut identified, mut dm, items, names, mut obfuscated_names, entities) = data;
+
+        for (_p, id) in (&player, &identified).join() {
+            if !dm.identified_items.contains(&id.name) && raws::is_tag_magic(&id.name) {
+                dm.identified_items.insert(id.name.clone());
+
+                for (entity, _item, name) in (&entities, &items, &names).join() {
+                    if name.name == id.name {
+                        obfuscated_names.remove(entity);
+                    }
+                }
+            }
+        }
+
+        // Clean up
+        identified.clear();
+    }
+}

src/main.rs

@@ -78,6 +78,7 @@ fn main() -> ::rltk::BError {
         Faction,
         Hidden,
         HungerClock,
+        IdentifiedItem,
         InBackpack,
         InflictsDamage,
         Initiative,

src/raws/rawmaster.rs

@@ -196,6 +196,16 @@ pub fn get_scroll_tags() -> Vec<String> {
     result
 }
 
+pub fn is_tag_magic(tag: &str) -> bool {
+    let raws = &RAWS.lock().unwrap();
+    if raws.item_index.contains_key(tag) {
+        let item_template = &raws.raws.items[raws.item_index[tag]];
+        item_template.magic.is_some()
+    } else {
+        false
+    }
+}
+
 fn spawn_position<'a>(
     pos: SpawnType,
     new_entity: EntityBuilder<'a>,
@@ -251,7 +261,12 @@ pub fn spawn_named_item(
 ) -> Option<Entity> {
     if raws.item_index.contains_key(key) {
         let item_template = &raws.raws.items[raws.item_index[key]];
-        let scroll_names = ecs.fetch::<MasterDungeonMap>().scroll_mappings.clone();
+
+        let dm = ecs.fetch::<MasterDungeonMap>();
+        let scroll_names = dm.scroll_mappings.clone();
+        let identified = dm.identified_items.clone();
+        std::mem::drop(dm);
+
         let mut eb = ecs.create_entity().marked::<SimpleMarker<SerializeMe>>();
 
         // Spawn in the specified location
@@ -351,14 +366,16 @@ pub fn spawn_named_item(
             };
             eb = eb.with(MagicItem { class });
 
-            #[allow(clippy::single_match)]
-            match magic.naming.as_str() {
-                "scroll" => {
-                    eb = eb.with(ObfuscatedName {
-                        name: scroll_names[&item_template.name].clone(),
-                    })
+            if !identified.contains(&item_template.name) {
+                #[allow(clippy::single_match)]
+                match magic.naming.as_str() {
+                    "scroll" => {
+                        eb = eb.with(ObfuscatedName {
+                            name: scroll_names[&item_template.name].clone(),
+                        })
+                    }
+                    _ => {}
                 }
-                _ => {}
             }
         }
 

src/saveload_system.rs

@@ -80,6 +80,7 @@ pub fn save_game(ecs: &mut World) {
             Faction,
             Hidden,
             HungerClock,
+            IdentifiedItem,
             InBackpack,
             InflictsDamage,
             Initiative,
@@ -195,6 +196,7 @@ pub fn load_game(ecs: &mut World) {
             Faction,
             Hidden,
             HungerClock,
+            IdentifiedItem,
             InBackpack,
             InflictsDamage,
             Initiative,

src/state.rs

@@ -7,7 +7,7 @@ use crate::game_log::GameLog;
 use crate::gui::{self, show_cheat_mode, CheatMenuResult, MainMenuSelection};
 use crate::hunger_system::HungerSystem;
 use crate::inventory_system::{
-    ItemCollectionSystem, ItemDropSystem, ItemRemoveSystem, ItemUseSystem,
+    ItemCollectionSystem, ItemDropSystem, ItemIdentificationSystem, ItemRemoveSystem, ItemUseSystem,
 };
 use crate::lighting_system::LightingSystem;
 use crate::map::{self, *};
@@ -127,6 +127,9 @@ impl State {
         let mut items = ItemUseSystem {};
         items.run_now(&self.ecs);
 
+        let mut item_id = ItemIdentificationSystem {};
+        item_id.run_now(&self.ecs);
+
         let mut drop_items = ItemDropSystem {};
         drop_items.run_now(&self.ecs);
 
@@ -466,7 +469,16 @@ impl GameState for State {
                         let tag = result.2.unwrap();
                         let price = result.3.unwrap();
                         let mut pools = self.ecs.write_storage::<Pools>();
-                        let player_pools = pools.get_mut(*self.ecs.fetch::<Entity>()).unwrap();
+                        let player_entity = self.ecs.fetch::<Entity>();
+
+                        let mut identified = self.ecs.write_storage::<IdentifiedItem>();
+                        identified
+                            .insert(*player_entity, IdentifiedItem { name: tag.clone() })
+                            .expect("Unable to identify item");
+                        std::mem::drop(identified);
+
+                        let player_pools = pools.get_mut(*player_entity).unwrap();
+                        std::mem::drop(player_entity);
                         if player_pools.gold >= price {
                             player_pools.gold -= price;
                             std::mem::drop(pools);