Implement cursed items

src/components/tags.rs

@@ -42,3 +42,6 @@ pub struct EquipmentChanged {}
 
 #[derive(Component, Debug, Serialize, Deserialize, Clone)]
 pub struct TownPortal {}
+
+#[derive(Component, Debug, Serialize, Deserialize, Clone)]
+pub struct CursedItem {}

src/gui.rs

@@ -9,23 +9,34 @@ pub use enums::*;
 use tooltip::draw_tooltips;
 
 use crate::components::{
-    Attribute, Attributes, Consumable, Equipped, HungerClock, HungerState, InBackpack, Item,
-    MagicItem, MagicItemClass, Name, ObfuscatedName, Pools, Vendor, Viewshed,
+    Attribute, Attributes, Consumable, CursedItem, Equipped, HungerClock, HungerState, InBackpack,
+    Item, MagicItem, MagicItemClass, Name, ObfuscatedName, Pools, Vendor, Viewshed,
 };
 use crate::game_log::GameLog;
 use crate::rex_assets::RexAssets;
 use crate::{camera, colors, Map, MasterDungeonMap, RunState, State, VendorMode};
 
 pub fn get_item_color(ecs: &World, item: Entity) -> RGB {
+    let dm = ecs.fetch::<crate::map::MasterDungeonMap>();
+
+    // If the item is cursed, and you have identified it, display it in red
+    if let Some(name) = ecs.read_storage::<Name>().get(item) {
+        if ecs.read_storage::<CursedItem>().get(item).is_some()
+            && dm.identified_items.contains(&name.name)
+        {
+            return colors::RED;
+        }
+    }
+
     if let Some(magic) = ecs.read_storage::<MagicItem>().get(item) {
-        match magic.class {
+        return match magic.class {
             MagicItemClass::Common => colors::EQUIP_COMMON,
             MagicItemClass::Rare => colors::EQUIP_RARE,
             MagicItemClass::Legendary => colors::EQUIP_LEGEND,
+        };
     }
-    } else {
+
     colors::WHITE
-    }
 }
 
 pub fn get_item_display_name(ecs: &World, item: Entity) -> String {

src/inventory_system/remove_system.rs

@@ -1,6 +1,7 @@
 use ::specs::prelude::*;
 
-use crate::components::{Equipped, InBackpack, WantsToRemoveItem};
+use crate::components::{CursedItem, Equipped, InBackpack, Name, WantsToRemoveItem};
+use crate::GameLog;
 
 pub struct ItemRemoveSystem {}
 
@@ -11,12 +12,25 @@ impl<'a> System<'a> for ItemRemoveSystem {
         WriteStorage<'a, WantsToRemoveItem>,
         WriteStorage<'a, Equipped>,
         WriteStorage<'a, InBackpack>,
+        ReadStorage<'a, CursedItem>,
+        WriteExpect<'a, GameLog>,
+        ReadStorage<'a, Name>,
     );
 
     fn run(&mut self, data: Self::SystemData) {
-        let (entities, mut wants_remove, mut equipped, mut backpack) = data;
+        let (entities, mut wants_remove, mut equipped, mut backpack, cursed, mut gamelog, names) =
+            data;
 
         for (entity, to_remove) in (&entities, &wants_remove).join() {
+            if cursed.get(to_remove.item).is_some() {
+                gamelog.append(format!(
+                    "You cannot remove {}, it is cursed",
+                    names.get(to_remove.item).unwrap().name
+                ));
+
+                continue;
+            }
+
             equipped.remove(to_remove.item);
             backpack
                 .insert(to_remove.item, InBackpack { owner: entity })

src/inventory_system/use_equip.rs

@@ -1,6 +1,10 @@
 use ::specs::prelude::*;
 
-use crate::components::{EquipmentChanged, Equippable, Equipped, InBackpack, Name, WantsToUseItem};
+use crate::components::{
+    CursedItem, EquipmentChanged, Equippable, Equipped, IdentifiedItem, InBackpack, Name,
+    WantsToUseItem,
+};
+
 use crate::GameLog;
 
 pub struct ItemEquipOnUse {}
@@ -17,6 +21,8 @@ impl<'a> System<'a> for ItemEquipOnUse {
         WriteStorage<'a, Equipped>,
         WriteStorage<'a, InBackpack>,
         WriteStorage<'a, EquipmentChanged>,
+        WriteStorage<'a, IdentifiedItem>,
+        ReadStorage<'a, CursedItem>,
     );
 
     fn run(&mut self, data: Self::SystemData) {
@@ -30,6 +36,8 @@ impl<'a> System<'a> for ItemEquipOnUse {
             mut equipped,
             mut backpack,
             mut dirty,
+            mut identified_item,
+            cursed,
         ) = data;
 
         let mut remove_use = Vec::new();
@@ -40,15 +48,37 @@ impl<'a> System<'a> for ItemEquipOnUse {
                 let target_slot = can_equip.slot;
 
                 // Remove any items the target has in the item's slot
+                let mut can_equip = true;
+                let mut log_entries: Vec<String> = Vec::new();
                 let mut to_unequip = Vec::new();
                 for (item_entity, already_equipped, name) in (&entities, &equipped, &names).join() {
                     if already_equipped.owner == target && already_equipped.slot == target_slot {
+                        if cursed.get(item_entity).is_some() {
+                            can_equip = false;
+                            gamelog
+                                .append(format!("You cannot un-equip {}, it is cursed.", name.name))
+                        } else {
                             to_unequip.push(item_entity);
                             if target == *player_entity {
-                            gamelog.append(format!("You un-equip {}.", name.name));
+                                log_entries.push(format!("You un-equip {}.", name.name));
                             }
                         }
                     }
+                }
+
+                if can_equip {
+                    // Identify the item
+                    if target == *player_entity {
+                        identified_item
+                            .insert(
+                                target,
+                                IdentifiedItem {
+                                    name: names.get(useitem.item).unwrap().name.clone(),
+                                },
+                            )
+                            .expect("Unable to identify item.");
+                    }
+
                     for item in to_unequip.iter() {
                         equipped.remove(*item);
                         backpack
@@ -56,6 +86,10 @@ impl<'a> System<'a> for ItemEquipOnUse {
                             .expect("Unable to move equipped item to backpack.");
                     }
 
+                    for entry in log_entries.iter() {
+                        gamelog.append(entry);
+                    }
+
                     // Wield the item
                     equipped
                         .insert(
@@ -73,6 +107,7 @@ impl<'a> System<'a> for ItemEquipOnUse {
                             names.get(useitem.item).unwrap().name
                         ));
                     }
+                }
 
                 // Done with item
                 remove_use.push(target);

src/main.rs

@@ -64,6 +64,7 @@ fn init_state() -> State {
         Chasing,
         Confusion,
         Consumable,
+        CursedItem,
         Door,
         DMSerializationHelper,
         EntityMoved,

src/raws/item_structs.rs

@@ -47,4 +47,5 @@ pub struct Wearable {
 pub struct MagicItem {
     pub class: String,
     pub naming: String,
+    pub cursed: Option<bool>,
 }

src/raws/rawmaster.rs

@@ -429,6 +429,12 @@ pub fn spawn_named_item(
                     }
                 }
             }
+
+            if let Some(cursed) = magic.cursed {
+                if cursed {
+                    eb = eb.with(CursedItem {});
+                }
+            }
         }
 
         return Some(eb.build());

src/saveload_system.rs

@@ -69,6 +69,7 @@ pub fn save_game(ecs: &mut World) {
             Chasing,
             Confusion,
             Consumable,
+            CursedItem,
             Door,
             DMSerializationHelper,
             EntityMoved,
@@ -186,6 +187,7 @@ pub fn load_game(ecs: &mut World) {
             Chasing,
             Confusion,
             Consumable,
+            CursedItem,
             Door,
             DMSerializationHelper,
             EntityMoved,