Add Item registry

pumpkin-world/src/global_registry.rs

@@ -0,0 +1,35 @@
+use std::collections::HashMap;
+
+use lazy_static::lazy_static;
+
+pub const ITEM_REGISTRY: &str = "minecraft:item";
+
+const REGISTRY_JSON: &str = include_str!("../assets/registries.json");
+
+#[derive(serde::Deserialize, Debug, Clone, PartialEq, Eq)]
+pub struct RegistryElement {
+    default: Option<String>,
+    entries: HashMap<String, u32>,
+}
+
+lazy_static! {
+    static ref REGISTRY: HashMap<String, RegistryElement> =
+        serde_json::from_str(REGISTRY_JSON).expect("Could not parse items.json registry.");
+}
+
+pub fn get_protocol_id(category: &str, entry: &str) -> u32 {
+    *REGISTRY
+        .get(category)
+        .expect("Invalid Category in registry")
+        .entries
+        .get(entry)
+        .expect("No Entry found")
+}
+
+pub fn get_default<'a>(category: &str) -> Option<&'a str> {
+    REGISTRY
+        .get(category)
+        .expect("Invalid Category in registry")
+        .default
+        .as_deref()
+}

pumpkin-world/src/item/item_registry.rs

@@ -0,0 +1,41 @@
+use std::collections::HashMap;
+
+use lazy_static::lazy_static;
+
+use crate::global_registry::{self, ITEM_REGISTRY};
+
+use super::Raritiy;
+
+const ITEMS_JSON: &str = include_str!("../../assets/items.json");
+
+#[derive(serde::Deserialize, Debug, Clone, PartialEq, Eq)]
+pub struct ItemComponents {
+    // TODO: attribute_modifiers
+    // TODO: enchantments: HashMap<>
+    #[serde(rename = "minecraft:lore")]
+    lore: Vec<String>,
+    #[serde(rename = "minecraft:max_stack_size")]
+    max_stack_size: u32,
+    #[serde(rename = "minecraft:rarity")]
+    rarity: Raritiy,
+    #[serde(rename = "minecraft:repair_cost")]
+    repair_cost: u32,
+}
+
+#[derive(serde::Deserialize, Debug, Clone, PartialEq, Eq)]
+struct ItemElement {
+    components: ItemComponents,
+}
+
+lazy_static! {
+    static ref ITEMS: HashMap<String, ItemElement> =
+        serde_json::from_str(ITEMS_JSON).expect("Could not parse items.json registry.");
+}
+
+pub fn get_item_element(item_id: &str) -> &ItemComponents {
+    &ITEMS.get(item_id).expect("Item not found").components
+}
+
+pub fn get_item_protocol_id(item_id: &str) -> u32 {
+    global_registry::get_protocol_id(ITEM_REGISTRY, item_id)
+}

pumpkin-world/src/item/mod.rs

@@ -0,0 +1,11 @@
+mod item_registry;
+
+#[derive(serde::Deserialize, Debug, Clone, PartialEq, Eq)]
+#[serde(rename_all = "lowercase")]
+/// Item Raritiy
+pub enum Raritiy {
+    Common,
+    UnCommon,
+    Rare,
+    Epic,
+}

pumpkin-world/src/lib.rs

@@ -4,5 +4,7 @@ pub const WORLD_HEIGHT: usize = 384;
 pub const WORLD_Y_START_AT: i32 = -64;
 pub const DIRECT_PALETTE_BITS: u32 = 15;
 mod block;
+mod global_registry;
+mod item;
 pub mod radial_chunk_iterator;
 mod world;