Merge pull request 'equip_changes' (#241) from equip_changes into master

Reviewed-by: jake <jake@sharnoth.com>

src/bin/main.rs

@@ -194,6 +194,116 @@ fn main() {
                         name: item::BankName("".to_string()),
                     }
                 }).await;
+            entity_gateway.create_item(
+                NewItemEntity {
+                    item: ItemDetail::Armor(
+                        item::armor::Armor {
+                            armor: item::armor::ArmorType::Frame,
+                            dfp: 0,
+                            evp: 0,
+                            slots: 4,
+                            modifiers: Vec::new(),
+                        }
+                    ),
+                    location: ItemLocation::Inventory {
+                        character_id: character.id,
+                        slot: 5,
+                        equipped: true,
+                    }
+                }
+            ).await;
+            entity_gateway.create_item(
+                NewItemEntity {
+                    item: ItemDetail::Shield(
+                        item::shield::Shield {
+                            shield: item::shield::ShieldType::Barrier,
+                            dfp: 0,
+                            evp: 0,
+                        }
+                    ),
+                    location: ItemLocation::Inventory {
+                        character_id: character.id,
+                        slot: 6,
+                        equipped: true,
+                    }
+                }
+            ).await;
+            entity_gateway.create_item(
+                NewItemEntity {
+                    item: ItemDetail::Unit(
+                        item::unit::Unit {
+                            unit: item::unit::UnitType::PriestMind,
+                            modifier: Some(item::unit::UnitModifier::Minus),
+                            armor_slot: 0,
+                        }
+                    ),
+                    location: ItemLocation::Inventory {
+                        character_id: character.id,
+                        slot: 7,
+                        equipped: true,
+                    }
+                }
+            ).await;
+            entity_gateway.create_item(
+                NewItemEntity {
+                    item: ItemDetail::Unit(
+                        item::unit::Unit {
+                            unit: item::unit::UnitType::PriestMind,
+                            modifier: Some(item::unit::UnitModifier::Minus),
+                            armor_slot: 1,
+                        }
+                    ),
+                    location: ItemLocation::Inventory {
+                        character_id: character.id,
+                        slot: 8,
+                        equipped: true,
+                    }
+                }
+            ).await;
+            entity_gateway.create_item(
+                NewItemEntity {
+                    item: ItemDetail::Unit(
+                        item::unit::Unit {
+                            unit: item::unit::UnitType::PriestMind,
+                            modifier: Some(item::unit::UnitModifier::Minus),
+                            armor_slot: 2,
+                        }
+                    ),
+                    location: ItemLocation::Inventory {
+                        character_id: character.id,
+                        slot: 9,
+                        equipped: true,
+                    }
+                }
+            ).await;
+            entity_gateway.create_item(
+                NewItemEntity {
+                    item: ItemDetail::Unit(
+                        item::unit::Unit {
+                            unit: item::unit::UnitType::PriestMind,
+                            modifier: Some(item::unit::UnitModifier::Minus),
+                            armor_slot: 3,
+                        }
+                    ),
+                    location: ItemLocation::Inventory {
+                        character_id: character.id,
+                        slot: 10,
+                        equipped: true,
+                    }
+                }
+            ).await;
+            entity_gateway.create_item(
+                NewItemEntity {
+                    item: ItemDetail::Mag(
+                        item::mag::Mag::baby_mag(5)
+                    ),
+                    location: ItemLocation::Inventory {
+                        character_id: character.id,
+                        slot: 11,
+                        equipped: true,
+                    }
+                }
+            ).await;
         }
 
         info!("[patch] starting server");

src/entity/gateway/postgres/models.rs

@@ -384,6 +384,7 @@ impl Into<shield::Shield> for PgShield {
 pub struct PgUnit {
     unit: unit::UnitType,
     modifier: Option<unit::UnitModifier>,
+    armor_slot: u8,
 }
 
 impl From<unit::Unit> for PgUnit {
@@ -391,6 +392,7 @@ impl From<unit::Unit> for PgUnit {
         PgUnit {
             unit: other.unit,
             modifier: other.modifier,
+            armor_slot: other.armor_slot,
         }
     }
 }
@@ -400,6 +402,7 @@ impl Into<unit::Unit> for PgUnit {
         unit::Unit {
             unit: self.unit,
             modifier: self.modifier,
+            armor_slot: self.armor_slot,
         }
     }
 }

src/entity/item/unit.rs

@@ -335,6 +335,7 @@ pub enum UnitModifier {
 pub struct Unit {
     pub unit: UnitType,
     pub modifier: Option<UnitModifier>,
+    pub armor_slot: u8,
 }
 
 
@@ -361,7 +362,7 @@ impl Unit {
                 },
             }
         }
-
+        result[4] = self.armor_slot;
         result
     }
 
@@ -379,6 +380,7 @@ impl Unit {
             Ok(Unit{
                 unit: u.unwrap(),
                 modifier: m,
+                armor_slot: data[4],
             })
         }
         else {

src/ship/drops/generic_unit.rs

@@ -89,6 +89,7 @@ impl GenericUnitTable {
             ItemDropType::Unit(Unit {
                 unit: unit_type,
                 modifier: unit_modifier,
+                armor_slot: 0,
             })
         })
     }
@@ -116,6 +117,7 @@ mod test {
             assert!(gut.get_drop(&area, &mut rng) == Some(ItemDropType::Unit(Unit {
                 unit: unit,
                 modifier: umod,
+                armor_slot: 0,
             })));
         }
     }

src/ship/drops/rare_drop_table.rs

@@ -128,6 +128,7 @@ impl RareDropTable {
                 ItemDropType::Unit(Unit {
                     unit: unit,
                     modifier: None,
+                    armor_slot: 0,
                 })
             },
             RareDropItem::Tool(tool) => {

src/ship/items/inventory.rs

@@ -337,6 +337,10 @@ impl<'a> InventoryItemHandle<'a> {
             }
         }
     }
+
+    pub fn get_slot(&self) -> usize {
+        self.slot
+    }
 }
 
 
@@ -418,6 +422,60 @@ impl CharacterInventory {
         })
     }
 
+    pub fn get_equipped_armor_handle<'a>(&'a mut self) -> Option<InventoryItemHandle<'a>> {
+        let (slot, _) = self.items.iter()
+            .enumerate()
+            .filter(|(_, item)| {
+                if let InventoryItem::Individual(individual_inventory_item) = item {
+                    if let ItemDetail::Armor(_) = &individual_inventory_item.item {
+                        return individual_inventory_item.equipped
+                    }
+                }
+                false
+            })
+            .nth(0)?;
+        Some(InventoryItemHandle {
+            inventory: self,
+            slot: slot,
+        })
+    }
+
+    pub fn get_equipped_shield_handle<'a>(&'a mut self) -> Option<InventoryItemHandle<'a>> {
+        let (slot, _) = self.items.iter()
+            .enumerate()
+            .filter(|(_, item)| {
+                if let InventoryItem::Individual(individual_inventory_item) = item {
+                    if let ItemDetail::Shield(_) = &individual_inventory_item.item {
+                        return individual_inventory_item.equipped
+                    }
+                }
+                false
+            })
+            .nth(0)?;
+        Some(InventoryItemHandle {
+            inventory: self,
+            slot: slot,
+        })
+    }
+
+    pub fn get_equipped_weapon_handle<'a>(&'a mut self) -> Option<InventoryItemHandle<'a>> {
+        let (slot, _) = self.items.iter()
+            .enumerate()
+            .filter(|(_, item)| {
+                if let InventoryItem::Individual(individual_inventory_item) = item {
+                    if let ItemDetail::Weapon(_) = &individual_inventory_item.item {
+                        return individual_inventory_item.equipped
+                    }
+                }
+                false
+            })
+            .nth(0)?;
+        Some(InventoryItemHandle {
+            inventory: self,
+            slot: slot,
+        })
+    }
+
     pub fn get_item_by_id(&self, item_id: ClientItemId) -> Option<&InventoryItem> {
         self.items.iter()
             .filter(|item| {
@@ -569,5 +627,9 @@ impl CharacterInventory {
     pub fn iter(&self) -> impl Iterator<Item = &InventoryItem> {
         self.items.iter()
     }
+
+    pub fn items(&self) -> &Vec<InventoryItem> {
+        &self.items
+    }
 }
 

src/ship/items/manager.rs

@@ -4,8 +4,9 @@ use thiserror::Error;
 use crate::entity::gateway::EntityGateway;
 use crate::entity::character::{CharacterEntity, CharacterEntityId};
 use crate::entity::item::{ItemDetail, ItemLocation, BankName};
-use crate::entity::item::{Meseta, NewItemEntity};
+use crate::entity::item::{Meseta, NewItemEntity, ItemEntity};
 use crate::entity::item::tool::{Tool, ToolType};
+use crate::entity::item::unit;
 use crate::ship::map::MapArea;
 use crate::ship::ship::ItemDropLocation;
 use crate::ship::drops::{ItemDrop, ItemDropType};
@@ -42,7 +43,11 @@ pub enum ItemManagerError {
     UseItemError(#[from] use_tool::UseItemError),
     CouldNotBuyItem,
     CouldNotAddBoughtItemToInventory,
-    ItemIdNotInInventory(ClientItemId)
+    ItemIdNotInInventory(ClientItemId),
+    CannotGetMutItem,
+    CannotGetIndividualItem,
+    InvalidSlot(u8, u8), // slots available, slot attempted
+    NoArmorEquipped,
 }
 
 
@@ -676,7 +681,6 @@ impl ItemManager {
         Ok(())
     }
 
-
     pub async fn use_item<EG: EntityGateway>(&mut self,
                                              used_item: ConsumedItem,
                                              entity_gateway: &mut EG,
@@ -893,4 +897,82 @@ impl ItemManager {
         };
         Ok(inventory_item)
     }
+
+    // TODO: check if slot exists before putting units into it
+    pub async fn player_equips_item<EG: EntityGateway>(&mut self,
+                                                       entity_gateway: &mut EG,
+                                                       character: &CharacterEntity,
+                                                       item_id: ClientItemId,
+                                                       equip_slot: u8)
+                                                       -> Result<(), ItemManagerError> {
+        let inventory = self.character_inventory.get_mut(&character.id).ok_or(ItemManagerError::NoCharacter(character.id))?;
+        let mut inventory_item_handle = inventory.get_item_handle_by_id(item_id).ok_or(ItemManagerError::NoSuchItemId(item_id))?;
+        let slot = inventory_item_handle.get_slot();
+        let inventory_item = inventory_item_handle.item_mut().ok_or(ItemManagerError::CannotGetMutItem)?.individual().ok_or(ItemManagerError::CannotGetIndividualItem)?;
+        inventory_item.equipped = true;
+        if let ItemDetail::Unit(u) = inventory_item.item {
+            if equip_slot > 0 {
+                inventory_item.item = ItemDetail::Unit(unit::Unit {
+                    unit: u.unit,
+                    modifier: u.modifier,
+                    armor_slot: ((equip_slot & 0x7) - 1) % 4, // or just be lazy and do equip_slot - 9
+                });
+            } else {
+                inventory_item.item = ItemDetail::Unit(unit::Unit {
+                    unit: u.unit,
+                    modifier: u.modifier,
+                    armor_slot: 0,
+                });
+            }
+        };
+        entity_gateway.change_item_location(&inventory_item.entity_id, ItemLocation::Inventory{
+            character_id: character.id,
+            slot: slot,
+            equipped: true,
+        }).await;
+        entity_gateway.save_item(&ItemEntity{
+            id: inventory_item.entity_id,
+            location: ItemLocation::Inventory{
+                character_id: character.id,
+                slot: slot,
+                equipped: true,
+            },
+            item: inventory_item.item.clone(),
+        }).await;
+        Ok(())
+    }
+
+    pub async fn player_unequips_item<EG: EntityGateway>(&mut self,
+                                                       entity_gateway: &mut EG,
+                                                       character: &CharacterEntity,
+                                                       item_id: ClientItemId)
+                                                       -> Result<(), ItemManagerError> {
+        let inventory = self.character_inventory.get_mut(&character.id).ok_or(ItemManagerError::NoCharacter(character.id))?;
+        let mut inventory_item_handle = inventory.get_item_handle_by_id(item_id).ok_or(ItemManagerError::NoSuchItemId(item_id))?;
+        let slot = inventory_item_handle.get_slot();
+        let inventory_item = inventory_item_handle.item_mut().ok_or(ItemManagerError::CannotGetMutItem)?.individual().ok_or(ItemManagerError::CannotGetIndividualItem)?;
+        inventory_item.equipped = false;
+        if let ItemDetail::Unit(u) = inventory_item.item {
+            inventory_item.item = ItemDetail::Unit(unit::Unit {
+                unit: u.unit,
+                modifier: u.modifier,
+                armor_slot: 0,
+            });
+        };
+        entity_gateway.change_item_location(&inventory_item.entity_id, ItemLocation::Inventory{
+            character_id: character.id,
+            slot: slot,
+            equipped: false,
+        }).await;
+        entity_gateway.save_item(&ItemEntity{
+            id: inventory_item.entity_id,
+            location: ItemLocation::Inventory{
+                character_id: character.id,
+                slot: slot,
+                equipped: false,
+            },
+            item: inventory_item.item.clone(),
+        }).await;
+        Ok(())
+    }
 }

src/ship/packet/handler/message.rs

@@ -1,13 +1,11 @@
 use libpso::packet::ship::*;
 use libpso::packet::messages::*;
 use crate::entity::gateway::EntityGateway;
-use crate::entity::item::ItemDetail;
-use crate::entity::item::tool::ToolType;
+use crate::entity::item::{ItemType};
 use crate::common::serverstate::ClientId;
 use crate::common::leveltable::CharacterLevelTable;
 use crate::ship::ship::{SendShipPacket, ShipError, Rooms, Clients, ItemDropLocation};
 use crate::ship::location::{ClientLocation, ClientLocationError};
-use crate::ship::map::{MapArea};
 use crate::ship::items::{ItemManager, ClientItemId};
 use crate::ship::packet::builder;
 
@@ -275,7 +273,7 @@ pub async fn player_used_medical_center<EG>(id: ClientId,
                                             clients: &mut Clients)
                                             -> Result<Box<dyn Iterator<Item = (ClientId, SendShipPacket)> + Send>, ShipError>
 where
-EG: EntityGateway
+    EG: EntityGateway
 {
     let client = clients.get_mut(&id).ok_or(ShipError::ClientNotFound(id))?;
     if client.character.meseta >= 10 {
@@ -307,3 +305,54 @@ where
                         (client.client, SendShipPacket::Message(Message::new(GameMessage::PlayerFeedMag(mag_feed.clone()))))
                     })))
 }
+
+pub async fn player_equips_item<EG>(id: ClientId,
+                                    pkt: &PlayerEquipItem,
+                                    entity_gateway: &mut EG,
+                                    clients: &Clients,
+                                    item_manager: &mut ItemManager)
+                                    -> Result<Box<dyn Iterator<Item = (ClientId, SendShipPacket)> + Send>, ShipError>
+where
+    EG: EntityGateway
+{
+    let client = clients.get(&id).ok_or(ShipError::ClientNotFound(id))?;
+    item_manager.player_equips_item(entity_gateway, &client.character, ClientItemId(pkt.item_id), pkt.sub_menu).await?;
+    Ok(Box::new(None.into_iter()))
+}
+
+pub async fn player_unequips_item<EG>(id: ClientId,
+                                    pkt: &PlayerUnequipItem,
+                                    entity_gateway: &mut EG,
+                                    clients: &Clients,
+                                    item_manager: &mut ItemManager)
+                                    -> Result<Box<dyn Iterator<Item = (ClientId, SendShipPacket)> + Send>, ShipError>
+where
+    EG: EntityGateway
+{
+    let client = clients.get(&id).ok_or(ShipError::ClientNotFound(id))?;
+    let equipped_unit_ids: Vec<ClientItemId> = {
+        item_manager.player_unequips_item(entity_gateway, &client.character, ClientItemId(pkt.item_id)).await?;
+        let inventory = item_manager.get_character_inventory(&client.character).unwrap();
+        let ue_item = inventory.get_item_by_id(ClientItemId(pkt.item_id)).ok_or(ShipError::ItemError)?;
+        if let ItemType::Armor(_) = ue_item.item_type() {
+            inventory.items()
+            .iter()
+            .filter(|inv_item| {
+                if let ItemType::Unit(_) = inv_item.item_type() {
+                    return inv_item.equipped()
+                }
+                    false
+                })
+            .map(|u| u.item_id())
+            .collect()
+        } else {
+            Vec::new()
+        }
+    };
+
+    for unit_id in equipped_unit_ids {
+        item_manager.player_unequips_item(entity_gateway, &client.character, unit_id).await;
+    }
+
+    Ok(Box::new(None.into_iter()))
+}

src/ship/ship.rs

@@ -393,6 +393,13 @@ impl<EG: EntityGateway> ShipServerState<EG> {
             GameMessage::PlayerFeedMag(player_feed_mag) => {
                 handler::message::player_feed_mag(id, &player_feed_mag, &mut self.entity_gateway, &mut self.client_location, &mut self.clients, &mut self.item_manager).await
             },
+            GameMessage::PlayerEquipItem(player_equip_item) => {
+                handler::message::player_equips_item(id, &player_equip_item, &mut self.entity_gateway, &mut self.clients, &mut self.item_manager).await
+            },
+            GameMessage::PlayerUnequipItem(player_unequip_item) => {
+                handler::message::player_unequips_item(id, &player_unequip_item, &mut self.entity_gateway, &mut self.clients, &mut self.item_manager).await
+            },
+
             _ => {
                 let cmsg = msg.clone();
                 Ok(Box::new(self.client_location.get_client_neighbors(id).unwrap().into_iter()

src/ship/shops/armor.rs

@@ -89,6 +89,7 @@ impl ShopItem for ArmorShopItem {
                 ItemDetail::Unit(Unit {
                     unit: *unit,
                     modifier: None,
+                    armor_slot: 0,
                 })
             },
         }

tests/test_character.rs

@@ -9,7 +9,7 @@ mod common;
 use common::*;
 
 #[async_std::test]
-async fn test_save_options<EG: EntityGateway>(ship: &mut ShipServerState<EG>, id: ClientId, options: u32) {
+async fn test_save_options() {
     let mut entity_gateway = InMemoryGateway::new();
 
     let (user1, _char1) = new_user_character(&mut entity_gateway, "a1", "a").await;

tests/test_item_equip.rs

@@ -0,0 +1,218 @@
+use elseware::common::serverstate::{ClientId, ServerState};
+use elseware::entity::gateway::{EntityGateway, InMemoryGateway};
+use elseware::ship::ship::{ShipServerState, RecvShipPacket};
+use elseware::entity::item;
+
+use libpso::packet::ship::*;
+use libpso::packet::messages::*;
+
+#[path = "common.rs"]
+mod common;
+use common::*;
+
+#[async_std::test]
+async fn test_equip_unit_from_equip_menu() {
+    let mut entity_gateway = InMemoryGateway::new();
+
+    let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
+
+    entity_gateway.create_item(
+        item::NewItemEntity {
+            item: item::ItemDetail::Armor(
+                item::armor::Armor{
+                    armor: item::armor::ArmorType::Frame,
+                    dfp: 0,
+                    evp: 0,
+                    slots: 4,
+                    modifiers: Vec::new(),
+                }),
+            location: item::ItemLocation::Inventory {
+                character_id: char1.id,
+                slot: 0,
+                equipped: true,
+            }
+        }).await;
+
+    entity_gateway.create_item(
+        item::NewItemEntity {
+            item: item::ItemDetail::Unit(
+                item::unit::Unit{
+                    unit: item::unit::UnitType::KnightPower,
+                    modifier: None,
+                    armor_slot: 0,
+                }),
+            location: item::ItemLocation::Inventory {
+                character_id: char1.id,
+                slot: 1,
+                equipped: false,
+            }
+        }).await.unwrap();
+
+    entity_gateway.create_item(
+        item::NewItemEntity {
+            item: item::ItemDetail::Unit(
+                item::unit::Unit{
+                    unit: item::unit::UnitType::KnightPower,
+                    modifier: Some(item::unit::UnitModifier::Plus),
+                    armor_slot: 0,
+                }),
+            location: item::ItemLocation::Inventory {
+                character_id: char1.id,
+                slot: 2,
+                equipped: false,
+            }
+        }).await.unwrap();
+
+    let mut ship = ShipServerState::builder()
+        .gateway(entity_gateway.clone())
+        .build();
+    log_in_char(&mut ship, ClientId(1), "a1", "a").await;
+    join_lobby(&mut ship, ClientId(1)).await;
+    create_room(&mut ship, ClientId(1), "room", "").await;
+
+    ship.handle(ClientId(1), &RecvShipPacket::Message(Message::new(GameMessage::PlayerEquipItem(PlayerEquipItem {
+        client: 0,
+        target: 0,
+        item_id: 0x10001,
+        sub_menu: 9,
+        unknown1: 0,
+    })))).await.unwrap().for_each(drop);
+
+    // case when someone tries to send invalid submenu? submenu is 9-12 in normal gameplay
+    ship.handle(ClientId(1), &RecvShipPacket::Message(Message::new(GameMessage::PlayerEquipItem(PlayerEquipItem {
+        client: 0,
+        target: 0,
+        item_id: 0x10002,
+        sub_menu: 14,
+        unknown1: 0,
+    })))).await.unwrap().for_each(drop);
+
+    let items = entity_gateway.get_items_by_character(&char1).await;
+    let (unit1, unit2) = (&items[1], &items[2]);
+
+    let unit1_equipped = match unit1.location {
+        item::ItemLocation::Inventory{equipped, ..} => equipped,
+        _ => false,
+    };
+
+    let unit2_equipped = match unit2.location {
+        item::ItemLocation::Inventory{equipped, ..} => equipped,
+        _ => false,
+    };
+
+    assert!({
+        match unit1.item {
+            item::ItemDetail::Unit(u) => {
+                if u.armor_slot == 0 && unit1_equipped {
+                    true
+                } else {
+                    false
+                }
+            },
+            _ => false,
+        }
+    });
+
+    assert!({
+        match unit2.item {
+            item::ItemDetail::Unit(u) => {
+                if u.armor_slot == 1 && unit2_equipped {
+                    true
+                } else {
+                    false
+                }
+            },
+            _ => false,
+        }
+    });
+}
+
+#[async_std::test]
+async fn test_unequip_armor_with_units() {
+    let mut entity_gateway = InMemoryGateway::new();
+
+    let (_user1, char1) = new_user_character(&mut entity_gateway, "a1", "a").await;
+
+    entity_gateway.create_item(
+        item::NewItemEntity {
+            item: item::ItemDetail::Armor(
+                item::armor::Armor{
+                    armor: item::armor::ArmorType::Frame,
+                    dfp: 0,
+                    evp: 0,
+                    slots: 4,
+                    modifiers: Vec::new(),
+                }),
+            location: item::ItemLocation::Inventory {
+                character_id: char1.id,
+                slot: 0,
+                equipped: true,
+            }
+        }).await;
+
+    entity_gateway.create_item(
+        item::NewItemEntity {
+            item: item::ItemDetail::Unit(
+                item::unit::Unit{
+                    unit: item::unit::UnitType::KnightPower,
+                    modifier: None,
+                    armor_slot: 0,
+                }),
+            location: item::ItemLocation::Inventory {
+                character_id: char1.id,
+                slot: 1,
+                equipped: true,
+            }
+        }).await.unwrap();
+
+    entity_gateway.create_item(
+        item::NewItemEntity {
+            item: item::ItemDetail::Unit(
+                item::unit::Unit{
+                    unit: item::unit::UnitType::KnightPower,
+                    modifier: Some(item::unit::UnitModifier::Plus),
+                    armor_slot: 1,
+                }),
+            location: item::ItemLocation::Inventory {
+                character_id: char1.id,
+                slot: 2,
+                equipped: true,
+            }
+        }).await.unwrap();
+
+    let mut ship = ShipServerState::builder()
+        .gateway(entity_gateway.clone())
+        .build();
+    log_in_char(&mut ship, ClientId(1), "a1", "a").await;
+    join_lobby(&mut ship, ClientId(1)).await;
+    create_room(&mut ship, ClientId(1), "room", "").await;
+
+    ship.handle(ClientId(1), &RecvShipPacket::Message(Message::new(GameMessage::PlayerUnequipItem(PlayerUnequipItem {
+        client: 0,
+        target: 0,
+        item_id: 0x10000,
+        unknown1: 0,
+    })))).await.unwrap().for_each(drop);
+
+    let items = entity_gateway.get_items_by_character(&char1).await;
+    let (armor, unit1, unit2) = (&items[0], &items[1], &items[2]);
+
+    let armor_equipped = match armor.location {
+        item::ItemLocation::Inventory{equipped, ..} => equipped,
+        _ => true,
+    };
+    
+    let unit1_equipped = match unit1.location {
+        item::ItemLocation::Inventory{equipped, ..} => equipped,
+        _ => true,
+    };
+
+    let unit2_equipped = match unit2.location {
+        item::ItemLocation::Inventory{equipped, ..} => equipped,
+        _ => true,
+    };
+
+    assert!(armor_equipped == false);
+    assert!(unit1_equipped == false);
+    assert!(unit2_equipped == false);
+}