diff --git a/CHANGELOG.md b/CHANGELOG.md
index d318bd45..93ba81c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 Unreleased
 ==========
 
+### Additions:
+
+- Add `StructureObject::structure_type` function to return the associated `StructureType`
+- Implement `OBSTACLE_OBJECT_TYPES` constant for structures by adding `StructureType::is_obstacle`
+  function
+
 0.23.0 (2025-04-09)
 ===================
 
diff --git a/src/constants/numbers.rs b/src/constants/numbers.rs
index f0313415..503f3e38 100644
--- a/src/constants/numbers.rs
+++ b/src/constants/numbers.rs
@@ -9,7 +9,7 @@ use super::types::{ResourceType, StructureType};
 
 // LOOK_* defined in `look.rs`
 
-// OBSTACLE_OBJECT_TYPES not yet implemented
+// OBSTACLE_OBJECT_TYPES defined in `types.rs`
 
 // BODYPART_COST defined in `small_enums.rs`
 
diff --git a/src/constants/types.rs b/src/constants/types.rs
index 394ff2f4..d368abb3 100644
--- a/src/constants/types.rs
+++ b/src/constants/types.rs
@@ -184,6 +184,38 @@ impl StructureType {
         };
         Some(hits)
     }
+
+    /// Translates the `OBSTACLE_OBJECT_TYPES` constant, returning true for
+    /// structure types that are obstacles
+    #[inline]
+    pub const fn is_obstacle(self) -> bool {
+        use self::StructureType::*;
+
+        match self {
+            Spawn => true,
+            Extension => true,
+            Road => false,
+            Wall => true,
+            Rampart => false,
+            KeeperLair => false,
+            Portal => false,
+            Controller => true,
+            Link => true,
+            Storage => true,
+            Tower => true,
+            Observer => true,
+            PowerBank => true,
+            PowerSpawn => true,
+            Extractor => false,
+            Lab => true,
+            Terminal => true,
+            Container => false,
+            Nuker => true,
+            Factory => true,
+            InvaderCore => true,
+            _ => false,
+        }
+    }
 }
 
 /// Translates `SUBSCRIPTION_TOKEN` and `INTERSHARD_RESOURCES` constants.
diff --git a/src/enums.rs b/src/enums.rs
index c725b41d..c022d6ca 100644
--- a/src/enums.rs
+++ b/src/enums.rs
@@ -7,7 +7,11 @@ pub mod action_error_codes;
 use enum_dispatch::enum_dispatch;
 use wasm_bindgen::{JsCast, JsValue};
 
-use crate::{objects::*, prelude::*, ResourceType, RESOURCES_ALL};
+use crate::{
+    constants::{ResourceType, StructureType, RESOURCES_ALL},
+    objects::*,
+    prelude::*,
+};
 
 #[enum_dispatch(Attackable)]
 pub enum AttackableObject {
@@ -346,6 +350,36 @@ pub enum StructureObject {
     StructureWall,
 }
 
+impl StructureObject {
+    pub fn structure_type(&self) -> StructureType {
+        use StructureObject::*;
+
+        match self {
+            StructureContainer(_) => StructureType::Container,
+            StructureController(_) => StructureType::Controller,
+            StructureExtension(_) => StructureType::Extension,
+            StructureExtractor(_) => StructureType::Extractor,
+            StructureFactory(_) => StructureType::Factory,
+            StructureInvaderCore(_) => StructureType::InvaderCore,
+            StructureKeeperLair(_) => StructureType::KeeperLair,
+            StructureLab(_) => StructureType::Lab,
+            StructureLink(_) => StructureType::Link,
+            StructureNuker(_) => StructureType::Nuker,
+            StructureObserver(_) => StructureType::Observer,
+            StructurePortal(_) => StructureType::Portal,
+            StructurePowerBank(_) => StructureType::PowerBank,
+            StructurePowerSpawn(_) => StructureType::PowerSpawn,
+            StructureRampart(_) => StructureType::Rampart,
+            StructureRoad(_) => StructureType::Road,
+            StructureSpawn(_) => StructureType::Spawn,
+            StructureStorage(_) => StructureType::Storage,
+            StructureTerminal(_) => StructureType::Terminal,
+            StructureTower(_) => StructureType::Tower,
+            StructureWall(_) => StructureType::Wall,
+        }
+    }
+}
+
 #[enum_dispatch(Transferable)]
 pub enum TransferableObject {
     StructureExtension,
diff --git a/src/lib.rs b/src/lib.rs
index 0b87246b..d06f179e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -94,6 +94,8 @@
 
 // #![warn(clippy::missing_const_for_fn)]
 
+// temporary - TODO remove and fix these if it's made permanent in the current form
+#![allow(clippy::uninlined_format_args)]
 // disable deprecation warnings - TODO need to figure out how to get wasm_bindgen's new thread_local
 // attribute working
 #![allow(deprecated)]