diff --git a/src/core/render/primitives/mod.rs b/src/core/render/primitives/mod.rs
index c7211a6..9061f3c 100644
--- a/src/core/render/primitives/mod.rs
+++ b/src/core/render/primitives/mod.rs
@@ -6,6 +6,7 @@ pub mod vulkan_resource;
 pub mod camera;
 pub mod mvp;
 pub mod transform;
+pub mod velocity;
 pub mod vertex;
 pub use buffer::{AsBindableBuffer, AsIndexBuffer, AsUniformBuffer, AsVertexBuffer};
 pub use command::{AsRecordable, AsRenderableMesh, AsRenderableMeshInstance};
diff --git a/src/core/render/primitives/transform.rs b/src/core/render/primitives/transform.rs
index 506158c..c5a6fae 100644
--- a/src/core/render/primitives/transform.rs
+++ b/src/core/render/primitives/transform.rs
@@ -1,5 +1,6 @@
 use std::sync::Arc;
 
+use bevy_ecs::resource::Resource;
 use glam::{Mat4, Quat, Vec3};
 use vulkano::{
     Validated,
@@ -12,14 +13,11 @@ use crate::core::render::primitives::{AsBindableBuffer, AsVertexBuffer};
 
 use super::command::AsRenderableMeshInstance;
 
-#[derive(Debug, Clone)]
+#[derive(Resource, Debug, Clone)]
 pub struct Transform {
     pub position: Vec3,
     pub rotation: Quat,
     pub scale: Vec3,
-    // Cache to avoid unnecessary recalculations
-    cached_matrix: Option<Mat4>,
-    dirty: bool,
 }
 
 #[derive(BufferContents, Vertex, Clone, Copy, Debug)]
@@ -35,8 +33,6 @@ impl Default for Transform {
             position: Vec3::ZERO,
             rotation: Quat::IDENTITY,
             scale: Vec3::ONE,
-            cached_matrix: None,
-            dirty: true,
         }
     }
 }
@@ -47,44 +43,31 @@ impl Transform {
             position,
             rotation,
             scale,
-            cached_matrix: None,
-            dirty: true,
         }
     }
 
     pub fn rotate(&mut self, rotation: Quat) {
         self.rotation *= rotation;
-        self.mark_dirty();
     }
 
     pub fn translate(&mut self, translation: Vec3) {
         self.position += translation;
-        self.mark_dirty();
     }
 
     pub fn scale(&mut self, scale: Vec3) {
         self.scale *= scale;
-        self.mark_dirty();
     }
 
     pub fn set_position(&mut self, position: Vec3) {
         self.position = position;
-        self.mark_dirty();
     }
 
     pub fn set_rotation(&mut self, rotation: Quat) {
         self.rotation = rotation;
-        self.mark_dirty();
     }
 
     pub fn set_scale(&mut self, scale: Vec3) {
         self.scale = scale;
-        self.mark_dirty();
-    }
-
-    fn mark_dirty(&mut self) {
-        self.dirty = true;
-        self.cached_matrix = None;
     }
 
     /// Get the transformation matrix (immutable - recalculates each time)
diff --git a/src/core/render/primitives/velocity.rs b/src/core/render/primitives/velocity.rs
new file mode 100644
index 0000000..7663f3e
--- /dev/null
+++ b/src/core/render/primitives/velocity.rs
@@ -0,0 +1,14 @@
+use bevy_ecs::resource::Resource;
+use glam::Vec3;
+
+#[derive(Resource, Debug, Clone)]
+pub struct Velocity {
+    pub linear: Vec3,
+    pub angular: Vec3,
+}
+
+impl Velocity {
+    pub fn new(linear: Vec3, angular: Vec3) -> Self {
+        Self { linear, angular }
+    }
+}