8 files changed, 49 insertions, 32 deletions
diff --git a/src/collision.c b/src/collision.c
new file mode 100644
index 0000000..81cbcfc
--- /dev/null
+++ b/src/collision.c
@@ -0,0 +1,9 @@
+#include "immdraw.h"
+#include "maths.h"
+#include "maths_types.h"
+#include "physics.h"
+
+PUB void Debug_DrawOBB(OBB obb) {
+  Transform t = transform_create(obb.center, obb.rotation, vec3_sub(obb.bbox.max, obb.bbox.min));
+  Immdraw_Cuboid(t, vec4(0.0, 0.8, 0.1, 1.0), true);
+}
diff --git a/src/collision.h b/src/collision.h
deleted file mode 100644
index 4ac9ec3..0000000
--- a/src/collision.h
+++ /dev/null
@@ -1,20 +0,0 @@
-#pragma once
-#include "geometry.h"
-
-enum ColliderType {
-  CuboidCollider,
-  SphereCollider,
-};
-
-/** @brief generic collider structure */
-typedef struct Collider {
-  u64 id;  // ? Replace with handle?
-  enum ColliderType shape;
-  union collider_data {
-    Cuboid cuboid;
-    Sphere sphere;
-  } geometry;
-  Transform transform;
-  u8 layer;
-  bool on_ground;
-} Collider;
diff --git a/src/core/core.c b/src/core/core.c
index af7daeb..64f59f3 100644
--- a/src/core/core.c
+++ b/src/core/core.c
@@ -76,8 +76,6 @@ Core* get_global_core() { return &g_core; }
 
 GLFWwindow* Core_GetGlfwWindowPtr(Core* core) { return g_core.window; }
 
-struct Renderer* Core_GetRenderer(Core* core) {
-  return core->renderer;
-}
+struct Renderer* Core_GetRenderer(Core* core) { return core->renderer; }
 
 Model* Model_Get(ModelHandle h) { return Model_pool_get(&g_core.models, h); }
diff --git a/src/maths/maths.h b/src/maths/maths.h
index 9e71f79..fc23517 100644
--- a/src/maths/maths.h
+++ b/src/maths/maths.h
@@ -147,11 +147,11 @@ static Mat4 mat4_translation(Vec3 position) {
   return out_matrix;
 }
 
-static Mat4 mat4_scale(f32 scale) {
+static Mat4 mat4_scale(Vec3 scale) {
   Mat4 out_matrix = mat4_ident();
-  out_matrix.data[0] = scale;
-  out_matrix.data[5] = scale;
-  out_matrix.data[10] = scale;
+  out_matrix.data[0] = scale.x;
+  out_matrix.data[5] = scale.y;
+  out_matrix.data[10] = scale.z;
   return out_matrix;
 }
 
@@ -307,7 +307,7 @@ static inline Mat4 mat4_look_at(Vec3 position, Vec3 target, Vec3 up) {
                 .scale = 1.0,                                             \
                 .is_dirty = false })
 
-static Transform transform_create(Vec3 pos, Quat rot, f32 scale) {
+static Transform transform_create(Vec3 pos, Quat rot, Vec3 scale) {
   return (Transform){ .position = pos, .rotation = rot, .scale = scale, .is_dirty = true };
 }
 
diff --git a/src/maths/maths_types.h b/src/maths/maths_types.h
index 2f84774..ef1fe4a 100644
--- a/src/maths/maths_types.h
+++ b/src/maths/maths_types.h
@@ -53,7 +53,7 @@ typedef Bbox_3D Aabb_3D;
 typedef struct Transform {
   Vec3 position;
   Quat rotation;
-  f32 scale;
+  Vec3 scale;
   bool is_dirty;
 } Transform;
 
diff --git a/src/physics.h b/src/physics.h
index e0e3b89..3485d1b 100644
--- a/src/physics.h
+++ b/src/physics.h
@@ -20,4 +20,25 @@ physics_world physics_init(physics_settings settings);
 void physics_shutdown(physics_world* phys_world);
 
 /** @brief perform one or more simulation steps */
-void physics_system_update(physics_world* phys_world, f64 deltatime);
-\ No newline at end of file
+void physics_system_update(physics_world* phys_world, f64 deltatime);
+
+// enum ColliderType {
+//   CuboidCollider,
+//   SphereCollider,
+// };
+
+/** @brief Oriented Bounding Box */
+typedef struct OBB {
+    Vec3 center;
+    Bbox_3D bbox;
+    Quat rotation;
+} OBB;
+
+PUB void Debug_DrawOBB(OBB obb);
+
+/** @brief generic collider structure */
+typedef struct Collider {
+  u64 id;  // ? Replace with handle?
+  OBB shape; // NOTE: We're only supporting the one collider type for now
+  bool on_ground;
+} Collider;
diff --git a/src/ral/backends/opengl/backend_opengl.c b/src/ral/backends/opengl/backend_opengl.c
index 97fd362..3822220 100644
--- a/src/ral/backends/opengl/backend_opengl.c
+++ b/src/ral/backends/opengl/backend_opengl.c
@@ -57,8 +57,7 @@ bool GPU_Backend_Init(const char* window_name, struct GLFWwindow* window,
 }
 
 // All of these are no-ops in OpenGL
-void GPU_Backend_Shutdown() { /* TODO */
-}
+void GPU_Backend_Shutdown() { /* TODO */ }
 bool GPU_Device_Create(GPU_Device* out_device) { return true; }
 void GPU_Device_Destroy(GPU_Device* device) {}
 bool GPU_Swapchain_Create(GPU_Swapchain* out_swapchain) { return true; }
diff --git a/src/render/immdraw.c b/src/render/immdraw.c
index cb823d3..142087a 100644
--- a/src/render/immdraw.c
+++ b/src/render/immdraw.c
@@ -86,6 +86,16 @@ void Immdraw_Primitive(Transform tf, f32 size, Vec4 colour, bool wireframe, Mesh
   // bind pipeline
   GPU_EncodeBindPipeline(enc, imm->colour_pipeline);
 
+  // TODO: implement wireframe in other apis
+#if defined(CEL_REND_BACKEND_OPENGL)
+#include <glad/glad.h>
+  if (wireframe) {
+    glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+  } else {
+    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+  }
+#endif
+
   // update uniforms
   ImmediateUniforms uniforms = {
     .model = transform_to_mat(&tf),