Parse `"states"` field in blocks.json.

src/api/tests/blocks.rs

@@ -29,8 +29,30 @@ pub fn test_blocks_by_id() {
 
     for version in versions {
         let api = get_api(version);
-        let by_name = api.blocks.blocks().unwrap();
+        let by_id = api.blocks.blocks().unwrap();
-        assert!(by_name.get(&1).is_some());
+        assert!(by_id.get(&1).is_some());
-        assert!(by_name.get(&5).is_some());
+        assert!(by_id.get(&5).is_some());
+    }
+}
+
+#[test]
+pub fn test_block_states() {
+    let versions = get_test_versions();
+
+    for version in versions {
+        let api = get_api(version);
+        let by_name = api.blocks.blocks_by_name().unwrap();
+
+        let air = by_name.get("air").unwrap();
+        if let Some(states) = &air.states {
+            // Air has no states.
+            assert_eq!(states.len(), 0);
+        }
+
+        let water = by_name.get("water").unwrap();
+        if let Some(states) = &water.states {
+            // Water has states.
+            assert_ne!(states.len(), 0);
+        }
     }
 }

src/models/block.rs

@@ -19,6 +19,7 @@ pub struct Block {
     pub filter_light: u8,
     pub min_state_id: Option<u32>,
     pub max_state_id: Option<u32>,
+    pub states: Option<Vec<State>>,
     pub default_state: Option<u32>,
     #[serde(alias = "resistance")]
     pub blast_resistance: Option<f32>,
@@ -40,7 +41,8 @@ pub struct Variation {
 }
 
 #[derive(Deserialize, Debug, Clone)]
-#[serde(rename_all(deserialize = "camelCase", serialize = "snake_case"))]
+// The fields in this part of the schema are not camelCase.
+#[serde(rename_all(serialize = "snake_case"))]
 pub struct State {
     pub name: String,
     #[serde(alias = "type")]