example item

src/entities/item/container.rs

@@ -0,0 +1,54 @@
+use bevy::prelude::*;
+
+#[derive(Component, Debug)]
+pub struct Container {
+    // Maximum weight this container can hold
+    pub max_weight: u32,
+    // Maximum number of items (None = unlimited)
+    pub max_items: Option<u32>,
+    // Current weight of contents
+    pub current_weight: u32,
+    // List of item entities contained
+    pub contents: Vec<Entity>, // TODO - move away from Entity
+    // Whether the container is currently open/accessible
+    pub is_open: bool,
+}
+
+impl Container {
+    pub fn new(max_weight: u32, max_items: Option<u32>) -> Self {
+        Self {
+            max_weight,
+            max_items,
+            current_weight: 0,
+            contents: Vec::new(),
+            is_open: true,
+        }
+    }
+
+    pub fn can_fit(&self, weight: u32) -> bool {
+        self.current_weight + weight <= self.max_weight
+            && self
+                .max_items
+                .map_or(true, |max| self.contents.len() < max as usize)
+    }
+
+    pub fn add_item(&mut self, item_entity: Entity, weight: u32) -> bool {
+        if self.can_fit(weight) {
+            self.contents.push(item_entity);
+            self.current_weight += weight;
+            true
+        } else {
+            false
+        }
+    }
+
+    pub fn remove_item(&mut self, item_entity: Entity, weight: u32) -> bool {
+        if let Some(pos) = self.contents.iter().position(|&e| e == item_entity) {
+            self.contents.remove(pos);
+            self.current_weight = self.current_weight.saturating_sub(weight);
+            true
+        } else {
+            false
+        }
+    }
+}

src/entities/item/core.rs

@@ -0,0 +1,219 @@
+use bevy::prelude::*;
+
+use crate::entities::item::decorations::ItemDecorations;
+use crate::entities::item::material::Material;
+use crate::entities::item::quality::Quality;
+use crate::entities::item::types::ItemType;
+
+#[derive(Component, Debug)]
+#[require(Transform, Visibility)]
+pub struct Item {
+    // How worn/damaged the item is (0-255, where 255 is completely destroyed)
+    pub wear: u8,
+    // The quality of craftsmanship for the base item
+    pub quality: Quality,
+    // Time until stains fade (in game ticks/turns),
+    pub stain_time: u16,
+    // Temperature of the item (for hot/cold items)
+    pub temperature: i16, // Can be negative for very cold items
+}
+
+impl Default for Item {
+    fn default() -> Self {
+        Self {
+            wear: 0,
+            quality: Quality::default(),
+            stain_time: 0,
+            temperature: 20, // Room temperature
+        }
+    }
+}
+
+impl Item {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    // Calculate weight based on materials and decorations
+    pub fn calculate_weight(
+        &self,
+        item_type: &ItemType,
+        base_material: &Material,
+        decorations: Option<&ItemDecorations>,
+    ) -> u32 {
+        // Base weight from primary material
+        let base_volume = item_type.base_volume();
+        let base_weight = base_material.density() * base_volume;
+
+        // Additional weight from decorations
+        let decoration_weight = decorations
+            .map(|d| d.total_decoration_weight())
+            .unwrap_or(0.0);
+
+        let total_weight = base_weight + decoration_weight;
+
+        // Convert to u32 (multiply by 1000 to get grams if density was in kg/unit)
+        (total_weight * 1000.0) as u32
+    }
+
+    // Calculate total value considering all factors
+    pub fn calculate_value(
+        &self,
+        item_type: &ItemType,
+        base_material: &Material,
+        decorations: Option<&ItemDecorations>,
+    ) -> u32 {
+        // Base value from item type and material
+        let base_value = item_type.base_value() + base_material.base_value();
+
+        // Apply quality multiplier to base
+        let quality_modified_value = base_value as f32 * self.quality.value_multiplier();
+
+        // Additional value from decorations
+        let decoration_value = decorations.map(|d| d.total_decoration_value()).unwrap_or(0);
+
+        // Reduce value based on wear
+        let wear_multiplier = (255 - self.wear) as f32 / 255.0;
+
+        let total_value = (quality_modified_value + decoration_value as f32) * wear_multiplier;
+
+        total_value as u32
+    }
+
+    // Check if the item is destroyed due to wear
+    pub fn is_destroyed(&self) -> bool {
+        self.wear >= 255
+    }
+
+    // Apply wear to the item
+    pub fn add_wear(&mut self, wear_amount: u8) {
+        self.wear = self.wear.saturating_add(wear_amount);
+    }
+
+    // Check if item has any stains
+    pub fn has_stains(&self) -> bool {
+        self.stain_time > 0
+    }
+
+    // Reduce stain time (call this periodically to fade stains)
+    pub fn reduce_stain_time(&mut self, amount: u16) {
+        self.stain_time = self.stain_time.saturating_sub(amount);
+    }
+
+    // Add staining to the item
+    pub fn add_stain(&mut self, duration: u16) {
+        self.stain_time = self.stain_time.saturating_add(duration);
+    }
+}
+
+// Bundle for creating item entities
+#[derive(Bundle)]
+pub struct ItemBundle {
+    pub item: Item,
+    pub item_type: ItemType,
+    pub base_material: Material,
+    pub decorations: ItemDecorations,
+    pub transform: Transform,
+    pub visibility: Visibility,
+    pub sprite: Sprite,
+}
+
+// Component for items that have names (can be generated or custom)
+#[derive(Component, Debug, Clone)]
+pub struct ItemName {
+    // The base name of the item type
+    pub base_name: String,
+    // Custom name given by player or generated
+    pub custom_name: Option<String>,
+}
+
+impl ItemName {
+    pub fn new(base_name: String) -> Self {
+        Self {
+            base_name,
+            custom_name: None,
+        }
+    }
+
+    // Generate full display name including materials and decorations
+    pub fn display_name(
+        &self,
+        item: &Item,
+        base_material: &Material,
+        decorations: Option<&ItemDecorations>,
+    ) -> String {
+        let mut parts = Vec::new();
+
+        // Quality prefix
+        let quality_name = item.quality.display_name();
+        if !quality_name.is_empty() {
+            parts.push(quality_name.to_string());
+        }
+
+        // Base material
+        parts.push(base_material.name());
+
+        // Item name
+        parts.push(self.base_name.clone());
+
+        let mut result = parts.join(" ");
+
+        // Add decorations to the description
+        if let Some(decorations) = decorations {
+            let mut decoration_parts = Vec::new();
+
+            // Gem encrustings
+            for gem in &decorations.gem_encrustings {
+                let quality_prefix = if gem.quality != Quality::Ordinary {
+                    format!("{} ", gem.quality.display_name())
+                } else {
+                    String::new()
+                };
+                decoration_parts.push(format!(
+                    "encrusted with {}{}",
+                    quality_prefix,
+                    gem.material.name()
+                ));
+            }
+
+            // Trim materials
+            for trim in &decorations.trim_materials {
+                let quality_prefix = if trim.quality != Quality::Ordinary {
+                    format!("{} ", trim.quality.display_name())
+                } else {
+                    String::new()
+                };
+                let trim_name = if quality_prefix.is_empty() {
+                    trim.material.name()
+                } else {
+                    format!("{} {}", quality_prefix, trim.material.name())
+                };
+                decoration_parts.push(format!("with {} trim", trim_name));
+            }
+
+            // Engravings
+            for engraving in &decorations.engravings {
+                let quality_prefix = if engraving.quality != Quality::Ordinary {
+                    format!("{} ", engraving.quality.display_name())
+                } else {
+                    String::new()
+                };
+                decoration_parts.push(format!(
+                    "engraved with {}images of {}",
+                    quality_prefix, engraving.subject
+                ));
+            }
+
+            if !decoration_parts.is_empty() {
+                result = format!("{}, {}", result, decoration_parts.join(", "));
+            }
+        }
+
+        // Custom name
+        if let Some(custom) = &self.custom_name {
+            result = format!("\"{}\" {}", custom, result);
+        }
+
+        result
+    }
+}

src/entities/item/decorations.rs

@@ -0,0 +1,122 @@
+use bevy::prelude::*;
+
+use crate::entities::item::material::Material;
+use crate::entities::item::quality::Quality;
+
+#[derive(Component, Debug, Clone)]
+pub struct ItemDecorations {
+    // Gems encrusted on the item
+    pub gem_encrustings: Vec<GemEncrusting>,
+    // Metal trim/bands
+    pub trim_materials: Vec<TrimMaterial>,
+    // Engravings on the item
+    pub engravings: Vec<Engraving>,
+}
+
+impl Default for ItemDecorations {
+    fn default() -> Self {
+        Self {
+            gem_encrustings: Vec::new(),
+            trim_materials: Vec::new(),
+            engravings: Vec::new(),
+        }
+    }
+}
+
+impl ItemDecorations {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    // Calculate total additional weight from decorations
+    pub fn total_decoration_weight(&self) -> f32 {
+        let gem_weight: f32 = self
+            .gem_encrustings
+            .iter()
+            .map(|gem| gem.material.density() * gem.size)
+            .sum();
+
+        let trim_weight: f32 = self
+            .trim_materials
+            .iter()
+            .map(|trim| trim.material.density() * trim.amount)
+            .sum();
+
+        // Engravings don't add weight, they remove material
+        gem_weight + trim_weight
+    }
+
+    // Calculate total additional value from decorations
+    pub fn total_decoration_value(&self) -> u32 {
+        let gem_value: f32 = self
+            .gem_encrustings
+            .iter()
+            .map(|gem| gem.material.base_value() as f32 * gem.size * gem.quality.value_multiplier())
+            .sum();
+
+        let trim_value: f32 = self
+            .trim_materials
+            .iter()
+            .map(|trim| {
+                trim.material.base_value() as f32 * trim.amount * trim.quality.value_multiplier()
+            })
+            .sum();
+
+        let engraving_value: f32 = self
+            .engravings
+            .iter()
+            .map(|engraving| engraving.base_value() * engraving.quality.value_multiplier())
+            .sum();
+
+        (gem_value + trim_value + engraving_value) as u32
+    }
+
+    pub fn add_gem_encrusting(&mut self, material: Material, size: f32, quality: Quality) {
+        if let Material::Gem(_) = material {
+            self.gem_encrustings.push(GemEncrusting {
+                material,
+                size,
+                quality,
+            });
+        }
+    }
+
+    pub fn add_trim(&mut self, material: Material, amount: f32, quality: Quality) {
+        self.trim_materials.push(TrimMaterial {
+            material,
+            amount,
+            quality,
+        });
+    }
+
+    pub fn add_engraving(&mut self, subject: String, quality: Quality) {
+        self.engravings.push(Engraving { subject, quality });
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct GemEncrusting {
+    pub material: Material, // Should be a gem, but using material to gain access to its wider functions
+    pub size: f32,          // Size of the gem (affects weight and value)
+    pub quality: Quality,   // Quality of the gem cut
+}
+
+#[derive(Debug, Clone)]
+pub struct TrimMaterial {
+    pub material: Material, // Usually metal for bands/trim
+    pub amount: f32,        // Amount of material used
+    pub quality: Quality,   // Quality of the trim work
+}
+
+#[derive(Debug, Clone)]
+pub struct Engraving {
+    pub subject: String,  // What the engraving depicts
+    pub quality: Quality, // Quality of the engraving
+}
+
+impl Engraving {
+    pub fn base_value(&self) -> f32 {
+        // Base value for engravings (they're pure craftsmanship)
+        20.0
+    }
+}

src/entities/item/material.rs

@@ -0,0 +1,156 @@
+use bevy::prelude::*;
+
+#[derive(Component, Debug, Clone, PartialEq, Eq, Hash)]
+pub enum Material {
+    NA,
+    Wood(WoodType),
+    Stone(StoneType),
+    Metal(MetalType),
+    Cloth(ClothType),
+    Leather(LeatherType),
+    Bone,
+    Shell,
+    Glass,
+    Ceramic,
+    Gem(GemType),
+    Wax,
+}
+
+impl Material {
+    // Weight per unit volume (arbitrary units - adjust as needed)
+    pub fn density(&self) -> f32 {
+        match self {
+            Material::NA => 1.0,
+            Material::Wood(wood) => match wood {
+                WoodType::Oak => 0.7,
+                WoodType::Pine => 0.5,
+                WoodType::Birch => 0.6,
+                WoodType::Ironwood => 1.2,
+            },
+            Material::Stone(stone) => match stone {
+                StoneType::Granite => 2.7,
+                StoneType::Marble => 2.6,
+                StoneType::Sandstone => 2.2,
+                StoneType::Obsidian => 2.4,
+            },
+            Material::Metal(metal) => match metal {
+                MetalType::Iron => 7.9,
+                MetalType::Steel => 7.8,
+                MetalType::Copper => 8.9,
+                MetalType::Silver => 10.5,
+                MetalType::Gold => 19.3,
+                MetalType::Platinum => 21.5,
+            },
+            Material::Cloth(_) => 0.3,
+            Material::Leather(_) => 0.8,
+            Material::Bone => 1.8,
+            Material::Shell => 2.0,
+            Material::Glass => 2.5,
+            Material::Ceramic => 2.3,
+            Material::Gem(gem) => match gem {
+                GemType::Diamond => 3.5,
+                GemType::Ruby => 4.0,
+                GemType::Emerald => 2.7,
+                GemType::Sapphire => 4.0,
+            },
+            Material::Wax => 0.1,
+        }
+    }
+
+    // Base value per unit (before quality modifiers)
+    pub fn base_value(&self) -> u32 {
+        match self {
+            Material::NA => 1,
+            Material::Wood(_) => 1,
+            Material::Stone(_) => 2,
+            Material::Metal(metal) => match metal {
+                MetalType::Iron => 5,
+                MetalType::Steel => 8,
+                MetalType::Copper => 3,
+                MetalType::Silver => 15,
+                MetalType::Gold => 30,
+                MetalType::Platinum => 40,
+            },
+            Material::Cloth(_) => 2,
+            Material::Leather(_) => 3,
+            Material::Bone => 1,
+            Material::Shell => 2,
+            Material::Glass => 4,
+            Material::Ceramic => 3,
+            Material::Gem(gem) => match gem {
+                GemType::Diamond => 200,
+                GemType::Ruby => 150,
+                GemType::Emerald => 100,
+                GemType::Sapphire => 120,
+            },
+            Material::Wax => 3,
+        }
+    }
+
+    pub fn name(&self) -> String {
+        match self {
+            Material::NA => "N/A".to_string(),
+            Material::Wood(wood) => format!("{:?}", wood).to_lowercase(),
+            Material::Stone(stone) => format!("{:?}", stone).to_lowercase(),
+            Material::Metal(metal) => format!("{:?}", metal).to_lowercase(),
+            Material::Cloth(cloth) => format!("{:?}", cloth).to_lowercase(),
+            Material::Leather(leather) => {
+                format!("{} leather", format!("{:?}", leather).to_lowercase())
+            }
+            Material::Bone => "bone".to_string(),
+            Material::Shell => "shell".to_string(),
+            Material::Glass => "glass".to_string(),
+            Material::Ceramic => "ceramic".to_string(),
+            Material::Gem(gem) => format!("{:?}", gem).to_lowercase(),
+            Material::Wax => "wax".to_string(),
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum WoodType {
+    Oak,
+    Pine,
+    Birch,
+    Ironwood,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum StoneType {
+    Granite,
+    Marble,
+    Sandstone,
+    Obsidian,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum MetalType {
+    Iron,
+    Steel,
+    Copper,
+    Silver,
+    Gold,
+    Platinum,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum ClothType {
+    Cotton,
+    Silk,
+    Wool,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum LeatherType {
+    Cow,
+    Pig,
+    Dragon,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum GemType {
+    Diamond,
+    Ruby,
+    Emerald,
+    Sapphire,
+}

src/entities/item/mod.rs

@@ -0,0 +1,19 @@
+pub mod container;
+pub mod core;
+pub mod decorations;
+pub mod material;
+pub mod perishable;
+pub mod prefabs;
+pub mod quality;
+pub mod systems;
+pub mod types;
+
+pub use container::*;
+pub use core::*;
+pub use decorations::*;
+pub use material::*;
+pub use perishable::*;
+pub use prefabs::*;
+pub use quality::*;
+pub use systems::*;
+pub use types::*;

src/entities/item/perishable.rs

@@ -0,0 +1,51 @@
+use bevy::prelude::*;
+
+use crate::entities::item::material::Material;
+use crate::entities::item::types::ItemType;
+use crate::entities::item::Item;
+
+#[derive(Component, Debug)]
+pub struct Perishable {
+    // How much the item has decayed (0-255)
+    pub decay: u8,
+    // How fast this item decays per tick
+    pub decay_rate: u8,
+    // What happens when fully decayed
+    pub decay_result: DecayResult,
+}
+
+#[derive(Debug, Clone)]
+pub enum DecayResult {
+    Disappear,
+    Transform(ItemType, Material), // Transform into another item type with different material
+}
+
+pub fn decay_system(
+    time: Res<Time>,
+    mut perishable_items: Query<(Entity, &mut Perishable, &Item, &ItemType, &Material)>,
+    mut commands: Commands,
+) {
+    for (entity, mut perishable, item, item_type, base_material) in perishable_items.iter_mut() {
+        // Simple decay - you might want to make this more sophisticated
+        if time.elapsed_secs_f64() as u32 % 60 == 0 {
+            // Decay every 60 seconds
+            perishable.decay = perishable.decay.saturating_add(perishable.decay_rate);
+
+            if perishable.decay >= 255 {
+                match &perishable.decay_result {
+                    DecayResult::Disappear => {
+                        commands.entity(entity).despawn();
+                    }
+                    DecayResult::Transform(new_item_type, new_material) => {
+                        // Transform the item
+                        commands
+                            .entity(entity)
+                            .insert(new_item_type.clone())
+                            .insert(new_material.clone())
+                            .remove::<Perishable>();
+                    }
+                }
+            }
+        }
+    }
+}

src/entities/item/prefabs/misc/misc_prefabs.rs

@@ -0,0 +1,63 @@
+use bevy::prelude::*;
+
+use crate::entities::item::{Item, ItemBundle, ItemDecorations, ItemType, Material, Quality};
+use crate::world::VisibleGameEntity;
+
+// Enum for misc item prefabs
+#[derive(Debug, Clone, Copy)]
+pub enum MiscPrefab {
+    RawMeat,
+    Coin,
+}
+
+// Spawns a misc prefab at a given position.
+// These are all likely temporary to speed up development but will be replaced by semi-custom items everywhere.
+pub fn spawn_prefab(
+    commands: &mut Commands,
+    asset_server: &Res<AssetServer>,
+    prefab: MiscPrefab,
+    position: Vec3,
+) -> Entity {
+    match prefab {
+        MiscPrefab::RawMeat => {
+            let meat = commands
+                .spawn(ItemBundle {
+                    item: Item {
+                        quality: Quality::Ordinary,
+                        ..Item::default()
+                    },
+                    item_type: ItemType::Food(crate::entities::item::FoodType::Meat),
+                    base_material: Material::NA,
+                    decorations: ItemDecorations::new(),
+                    transform: Transform::from_translation(position - Vec3::new(0.0, 0.0, 0.1)),
+                    visibility: Visibility::Visible,
+                    sprite: Sprite {
+                        image: asset_server.load("raw_meat.png"),
+                        ..Default::default()
+                    },
+                })
+                .id();
+            commands.entity(meat).insert(VisibleGameEntity).id()
+        }
+        MiscPrefab::Coin => {
+            let coin = commands
+                .spawn(ItemBundle {
+                    item: Item {
+                        quality: Quality::Ordinary,
+                        ..Item::default()
+                    },
+                    item_type: ItemType::Coin,
+                    base_material: Material::Metal(crate::entities::item::MetalType::Copper),
+                    decorations: ItemDecorations::new(),
+                    transform: Transform::from_translation(position - Vec3::new(0.0, 0.0, 0.1)),
+                    visibility: Visibility::Visible,
+                    sprite: Sprite {
+                        image: asset_server.load("coin.png"),
+                        ..Default::default()
+                    },
+                })
+                .id();
+            commands.entity(coin).insert(VisibleGameEntity).id()
+        }
+    }
+}

src/entities/item/prefabs/misc/mod.rs

@@ -0,0 +1,3 @@
+pub mod misc_prefabs;
+
+pub use misc_prefabs::*;

src/entities/item/prefabs/mod.rs

@@ -0,0 +1,3 @@
+pub mod misc; // miscellaneous items (raw meat, coins, etc.)
+
+pub use misc::*; // re-export misc prefabs for easier access

src/entities/item/quality.rs

@@ -0,0 +1,46 @@
+use bevy::prelude::*;
+
+#[derive(Component, Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+pub enum Quality {
+    // Standard qualities
+    Ordinary = 0,
+    WellCrafted = 1,
+    FinelyCrafted = 2,
+    Superior = 3,
+    Exceptional = 4,
+    Masterwork = 5,
+    // Special artifact quality
+    Artifact = 10,
+}
+
+impl Quality {
+    pub fn value_multiplier(&self) -> f32 {
+        match self {
+            Quality::Ordinary => 1.0,
+            Quality::WellCrafted => 1.2,
+            Quality::FinelyCrafted => 1.5,
+            Quality::Superior => 2.0,
+            Quality::Exceptional => 3.0,
+            Quality::Masterwork => 5.0,
+            Quality::Artifact => 10.0,
+        }
+    }
+
+    pub fn display_name(&self) -> &'static str {
+        match self {
+            Quality::Ordinary => "",
+            Quality::WellCrafted => "well-crafted",
+            Quality::FinelyCrafted => "finely-crafted",
+            Quality::Superior => "superior",
+            Quality::Exceptional => "exceptional",
+            Quality::Masterwork => "masterwork",
+            Quality::Artifact => "artifact",
+        }
+    }
+}
+
+impl Default for Quality {
+    fn default() -> Self {
+        Quality::Ordinary
+    }
+}

src/entities/item/systems.rs

@@ -0,0 +1,70 @@
+use bevy::prelude::*;
+
+use crate::entities::item::decorations::ItemDecorations;
+use crate::entities::item::material::{GemType, Material, MetalType};
+use crate::entities::item::quality::Quality;
+use crate::entities::item::types::ItemType;
+use crate::entities::item::Item;
+use crate::entities::item::ItemBundle;
+use crate::entities::item::ItemName;
+
+// System to reduce stain time over time
+pub fn stain_fade_system(time: Res<Time>, mut items: Query<&mut Item>) {
+    // Fade stains every 10 seconds
+    if time.elapsed_secs_f64() as u32 % 10 == 0 {
+        for mut item in items.iter_mut() {
+            item.reduce_stain_time(1);
+        }
+    }
+}
+
+// Helper function to create a decorated item
+pub fn create_decorated_item(
+    commands: &mut Commands,
+    item_type: ItemType,
+    base_material: Material,
+    quality: Quality,
+    position: Vec3,
+    sprite: Sprite,
+) -> Entity {
+    let mut decorations = ItemDecorations::new();
+
+    // Example: Add a ruby encrusting to valuable items
+    if quality >= Quality::Superior {
+        decorations.add_gem_encrusting(
+            Material::Gem(GemType::Ruby),
+            0.5, // Small gem
+            Quality::WellCrafted,
+        );
+    }
+
+    // Example: Add silver trim to masterwork items
+    if quality >= Quality::Masterwork {
+        decorations.add_trim(
+            Material::Metal(MetalType::Silver),
+            0.2, // Small amount of trim
+            quality,
+        );
+    }
+
+    // Example: Add engraving to exceptional+ items
+    if quality >= Quality::Exceptional {
+        decorations.add_engraving("a majestic dorf holding a pickaxe".to_string(), quality);
+    }
+
+    commands
+        .spawn(ItemBundle {
+            item: Item {
+                quality,
+                ..Item::default()
+            },
+            item_type: item_type.clone(),
+            base_material,
+            decorations,
+            transform: Transform::from_translation(position),
+            visibility: Visibility::Visible,
+            sprite: sprite,
+        })
+        .insert(ItemName::new(item_type.name()))
+        .id()
+}

src/entities/item/types.rs

@@ -0,0 +1,160 @@
+use bevy::prelude::*;
+
+#[derive(Component, Debug, Clone, PartialEq, Eq, Hash)]
+pub enum ItemType {
+    // Weapons
+    Weapon(WeaponType),
+    // Armor/Clothing
+    Armor(ArmorType),
+    // Tools
+    Tool(ToolType),
+    // Consumables
+    Food(FoodType),
+    Drink(DrinkType),
+    Medicine,
+    // Crafting materials
+    RawMaterial,
+    // Trade goods
+    Gem,
+    Coin,
+    // Misc
+    Container,
+    Book,
+    Toy,
+    Decoration,
+}
+
+impl ItemType {
+    // Base volume for this item type (used for weight calculation)
+    pub fn base_volume(&self) -> f32 {
+        match self {
+            ItemType::Weapon(weapon) => match weapon {
+                WeaponType::Sword => 2.0,
+                WeaponType::Axe => 1.5,
+                WeaponType::Hammer => 3.0,
+                WeaponType::Spear => 1.8,
+                WeaponType::Bow => 0.8,
+                WeaponType::Crossbow => 2.5,
+                WeaponType::Dagger => 0.3,
+            },
+            ItemType::Armor(armor) => match armor {
+                ArmorType::Helmet => 1.0,
+                ArmorType::Chestplate => 4.0,
+                ArmorType::Leggings => 2.5,
+                ArmorType::Boots => 0.8,
+                ArmorType::Gloves => 0.4,
+                ArmorType::Shield => 2.0,
+                ArmorType::Cloak => 0.5,
+                ArmorType::Shirt => 0.3,
+                ArmorType::Pants => 0.4,
+            },
+            ItemType::Tool(tool) => match tool {
+                ToolType::Pickaxe => 2.0,
+                ToolType::Shovel => 1.5,
+                ToolType::Axe => 1.75,
+                ToolType::Hammer => 1.0,
+                ToolType::Anvil => 50.0,    // Heavy!
+                ToolType::Furnace => 100.0, // Very heavy!
+            },
+            ItemType::Food(_) => 0.2,
+            ItemType::Drink(_) => 0.3,
+            ItemType::Medicine => 0.1,
+            ItemType::RawMaterial => 0.5,
+            ItemType::Gem => 0.1,
+            ItemType::Coin => 0.01,
+            ItemType::Container => 1.0,
+            ItemType::Book => 0.5,
+            ItemType::Toy => 0.2,
+            ItemType::Decoration => 0.3,
+        }
+    }
+
+    // Base value for this item type
+    pub fn base_value(&self) -> u32 {
+        match self {
+            ItemType::Weapon(_) => 50,
+            ItemType::Armor(_) => 30,
+            ItemType::Tool(_) => 25,
+            ItemType::Food(_) => 2,
+            ItemType::Drink(_) => 3,
+            ItemType::Medicine => 10,
+            ItemType::RawMaterial => 1,
+            ItemType::Gem => 100,
+            ItemType::Coin => 1,
+            ItemType::Container => 15,
+            ItemType::Book => 20,
+            ItemType::Toy => 5,
+            ItemType::Decoration => 10,
+        }
+    }
+
+    pub fn name(&self) -> String {
+        match self {
+            ItemType::Weapon(weapon) => format!("{:?}", weapon).to_lowercase(),
+            ItemType::Armor(armor) => format!("{:?}", armor).to_lowercase(),
+            ItemType::Tool(tool) => format!("{:?}", tool).to_lowercase(),
+            ItemType::Food(food) => format!("{:?}", food).to_lowercase(),
+            ItemType::Drink(drink) => format!("{:?}", drink).to_lowercase(),
+            ItemType::Medicine => "medicine".to_string(),
+            ItemType::RawMaterial => "raw material".to_string(),
+            ItemType::Gem => "gem".to_string(),
+            ItemType::Coin => "coin".to_string(),
+            ItemType::Container => "container".to_string(),
+            ItemType::Book => "book".to_string(),
+            ItemType::Toy => "toy".to_string(),
+            ItemType::Decoration => "decoration".to_string(),
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum WeaponType {
+    Sword,
+    Axe,
+    Hammer,
+    Spear,
+    Bow,
+    Crossbow,
+    Dagger,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum ArmorType {
+    Helmet,
+    Chestplate,
+    Leggings,
+    Boots,
+    Gloves,
+    Shield,
+    Cloak,
+    Shirt,
+    Pants,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum ToolType {
+    Pickaxe,
+    Shovel,
+    Axe,
+    Hammer,
+    Anvil,
+    Furnace,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum FoodType {
+    Meat,
+    Vegetable,
+    Fruit,
+    Grain,
+    Prepared, // cooked meals
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum DrinkType {
+    Water,
+    Juice,
+    Ale,
+    Wine,
+    Spirits,
+}

src/entities/livestock/pig.rs

@@ -1,17 +1,24 @@
 use crate::constants::TILE_SIZE;
 use crate::constants::*;
+use crate::entities::item::{
+    create_decorated_item, spawn_prefab, FoodType, Item, ItemBundle, ItemDecorations, ItemType,
+    Material, MiscPrefab, Quality, WoodType,
+};
 use crate::entities::shared_components::Ambulatory;
 use crate::world::VisibleGameEntity;
+use bevy::ecs::spawn;
 use bevy::prelude::*;
 use bevy_rand::prelude::*;
 use rand::Rng;
 
+// Pig bundle
 #[derive(Bundle)]
 pub struct Pig {
     ambulatory: Ambulatory,
     sprite: Sprite,
     transform: Transform,
     visibility: Visibility,
+    drop_timer: PigDropTimer, // NEW
 }
 
 impl Pig {
@@ -31,19 +38,24 @@ impl Pig {
             },
             transform: Transform::from_translation(position).with_scale(Vec3::splat(PIXEL_RATIO)),
             visibility: Visibility::Hidden,
+            drop_timer: PigDropTimer(Timer::from_seconds(5.0, TimerMode::Repeating)), // NEW
         }
     }
 }
 
+// Timer component for pigs dropping items
+#[derive(Component, Deref, DerefMut)]
+pub struct PigDropTimer(pub Timer);
+
+// Spawn a handful of pigs
 pub fn spawn_pigs(
     mut commands: Commands,
     asset_server: Res<AssetServer>,
     mut rng_q: Query<&mut Entropy<WyRand>, With<Global>>,
 ) {
     if let Ok(mut rng) = rng_q.single_mut() {
-        // Spawn a handful of pigs
         for _ in 0..5 {
-            let cit = commands
+            let pig = commands
                 .spawn(Pig::new(
                     &asset_server,
                     Vec3::new(
@@ -53,7 +65,29 @@ pub fn spawn_pigs(
                     ) * TILE_SIZE,
                 ))
                 .id();
-            commands.entity(cit).insert(VisibleGameEntity);
+            commands.entity(pig).insert(VisibleGameEntity);
+        }
+    }
+}
+
+// System: make pigs drop items every 5 seconds
+pub fn pig_drop_system(
+    mut commands: Commands,
+    asset_server: Res<AssetServer>,
+    time: Res<Time>,
+    mut pigs: Query<(&mut PigDropTimer, &Transform)>,
+) {
+    for (mut timer, transform) in &mut pigs {
+        timer.tick(time.delta());
+
+        if timer.just_finished() {
+            // Example: pig drops raw meat
+            spawn_prefab(
+                &mut commands,
+                &asset_server,
+                MiscPrefab::RawMeat,
+                transform.translation,
+            );
         }
     }
 }

src/entities/livestock/rabbit.rs

@@ -43,7 +43,7 @@ pub fn spawn_rabbits(
     if let Ok(mut rng) = rng_q.single_mut() {
         // Spawn a handful of rabbits
         for _ in 0..15 {
-            let cit = commands
+            let rab = commands
                 .spawn(Rabbit::new(
                     &asset_server,
                     Vec3::new(
@@ -53,7 +53,7 @@ pub fn spawn_rabbits(
                     ) * TILE_SIZE,
                 ))
                 .id();
-            commands.entity(cit).insert(VisibleGameEntity);
+            commands.entity(rab).insert(VisibleGameEntity);
         }
     }
 }

src/entities/mod.rs

@@ -1,3 +1,4 @@
+pub mod item;
 pub mod livestock;
 pub mod sentient;
 pub mod shared_components;