PRetty good collision detection but there is still some small bug I don't know about

src/dawn/display/Transform.cpp

@@ -40,10 +40,13 @@ void Transform::updateLocalTransformFromLocalValues() {
 }
 
 void Transform::updateWorldTransformFromLocalTransform() {
-  glm::mat4 newWorld(1.0f);
   auto parent = this->getParent();
-  if(parent != nullptr) newWorld = parent->getWorldTransform();
-  this->transformWorld = newWorld * transformLocal;
+  if(parent != nullptr) {
+    auto newWorld = parent->getWorldTransform();
+    this->transformWorld = newWorld * transformLocal;
+  } else {
+    this->transformWorld = transformLocal;
+  }
 }
 
 void Transform::updateLocalTransformFromWorldTransform() {
@@ -128,7 +131,7 @@ void Transform::setLocalTransform(glm::mat4 transform) {
 }
 
 glm::vec3 Transform::getWorldPosition() {
-  return glm::vec3(this->transformWorld[3]);
+  return glm::inverse(this->transformWorld)[3];
 }
 
 glm::mat4 Transform::getWorldTransform() {

src/dawn/physics/ScenePhysicsManager.cpp

@@ -5,13 +5,32 @@
 
 #include "ScenePhysicsManager.hpp"
 #include "scene/Scene.hpp"
+#include "scene/components/physics/3d/Collider3D.hpp"
 
 using namespace Dawn;
 
-ScenePhysicsManager::ScenePhysicsManager() {
-  
+ScenePhysicsManager::ScenePhysicsManager(Scene *scene) {
+  this->scene = scene;
 }
 
 void ScenePhysicsManager::update() {
   
+}
+
+std::vector<struct Collider3DRayResult> ScenePhysicsManager::raycast3DAll(
+  struct Ray3D ray
+) {
+  // TODO: Optimize the crap out of this.
+  struct Collider3DRayResult result;
+  auto colliders = scene->findComponents<Collider3D>();
+  std::vector<struct Collider3DRayResult> results;
+  auto itCollider = colliders.begin();
+  while(itCollider != colliders.end()) {
+    if((*itCollider)->raycast(&result, ray)) {
+      results.push_back(result);
+    }
+    ++itCollider;
+  }
+
+  return results;
 }

src/dawn/physics/ScenePhysicsManager.hpp

@@ -5,7 +5,7 @@
 
 #pragma once
 #include "dawnlibs.hpp"
-#include "scene/SceneItem.hpp"
+#include "physics/3d/Ray3D.hpp"
 
 typedef int64_t scenechunk_t;
 
@@ -13,17 +13,22 @@ typedef int64_t scenechunk_t;
 
 namespace Dawn {
   class Scene;
+  class Collider3D;
+  struct Collider3DRayResult;
 
   class ScenePhysicsManager {
     protected:
-      std::map<scenechunk_t, std::vector<SceneItem*>> chunkItems;
-      std::map<SceneItem*, std::vector<scenechunk_t>> itemChunks;
+      Scene *scene;
+      // std::map<scenechunk_t, std::vector<SceneItem*>> chunkItems;
+      // std::map<SceneItem*, std::vector<scenechunk_t>> itemChunks;
 
     public:
-      ScenePhysicsManager();
+      ScenePhysicsManager(Scene *scene);
 
       void update();
 
+      std::vector<struct Collider3DRayResult> raycast3DAll(struct Ray3D ray);
+
       friend class Scene;
   };
 }

src/dawn/scene/Scene.cpp

@@ -12,9 +12,9 @@ using namespace Dawn;
 
 Scene::Scene(DawnGame *game) {
   assertNotNull(game);
-  
   this->game = game;
   this->nextId = 0;
+  this->physics = new ScenePhysicsManager(this);
 }
 
 void Scene::update() {
@@ -30,6 +30,7 @@ void Scene::update() {
   #if DAWN_DEBUG_BUILD
     this->debugGrid();
     this->debugOrigin();
+    this->debugHitboxes();
   #endif
   
   // TODO: Cleanup old scene items
@@ -44,6 +45,8 @@ SceneItem * Scene::createSceneItem() {
 }
 
 Scene::~Scene() {
+  delete this->physics;
+
   // Early cleanup without disposing.
   auto it = this->items.begin();
   while(it != this->items.end()) {

src/dawn/scene/Scene.hpp

@@ -7,6 +7,7 @@
 #include "event/Event.hpp"
 #include "asset/Asset.hpp"
 #include "scene/debug/SceneDebugLine.hpp"
+#include "physics/ScenePhysicsManager.hpp"
 
 namespace Dawn {
   class DawnGame;
@@ -27,6 +28,7 @@ namespace Dawn {
     
     public:
       DawnGame *game;
+      ScenePhysicsManager *physics;
       Event<> eventSceneUpdate;
       Event<> eventSceneUnpausedUpdate;
 
@@ -139,6 +141,7 @@ namespace Dawn {
         void debugCube(struct SceneDebugCube cube);
         void debugOrigin();
         void debugGrid();
+        void debugHitboxes();
       #endif
 
       /**

src/dawn/scene/SceneItemComponent.cpp

@@ -33,6 +33,10 @@ DawnGame * SceneItemComponent::getGame() {
   return this->item->scene->game;
 }
 
+ScenePhysicsManager * SceneItemComponent::getPhysics() {
+  return this->item->scene->physics;
+}
+
 void SceneItemComponent::onStart() {
   
 }

src/dawn/scene/SceneItemComponent.hpp

@@ -52,6 +52,13 @@ namespace Dawn {
        */
       DawnGame * getGame();
 
+      /**
+       * Shorthand to return the physics manager that the scene this item 
+       * belongs to, belongs to.
+       * @return The scene physics manager.
+       */
+      ScenePhysicsManager * getPhysics();
+
       /**
        * Same as init, but intended for your subclass to override.
        */

src/dawn/scene/components/physics/3d/Collider3D.cpp

@@ -9,4 +9,14 @@ using namespace Dawn;
 
 Collider3D::Collider3D(SceneItem *item) : SceneItemComponent(item) {
   
-}
+}
+
+bool_t Collider3D::raycast(
+  struct Collider3DRayResult *result,
+  struct Ray3D ray
+) {
+  assertNotNull(result);
+  if(!this->performRaycast(result, ray)) return false;
+  result->collider = this;
+  return true;
+}

src/dawn/scene/components/physics/3d/Collider3D.hpp

@@ -12,6 +12,7 @@ namespace Dawn {
     glm::vec3 point;
     float_t distance;
     glm::vec3 normal;
+    Collider3D *collider;
   };
 
   enum Collider3DType {
@@ -20,6 +21,14 @@ namespace Dawn {
 
   class Collider3D : public SceneItemComponent {
     protected:
+      /**
+       * Internal per-collider raycast implementation. Same arguments as 
+       * Collider3D::raycast()
+       */
+      virtual bool_t performRaycast(
+        struct Collider3DRayResult *result,
+        struct Ray3D ray
+      ) = 0;
 
     public:
       Collider3D(SceneItem *item);
@@ -31,10 +40,7 @@ namespace Dawn {
        * @param ray The ray to cast against.
        * @return True if the ray intercepts this collider, otherwise false.
        */
-      virtual bool_t raycast(
-        struct Collider3DRayResult *result,
-        struct Ray3D ray
-      ) = 0;
+      bool_t raycast(struct Collider3DRayResult *result, struct Ray3D ray);
 
       /**
        * Returns which type of collider this is. Useful for performing dynamic

src/dawn/scene/components/physics/3d/CubeCollider.cpp

@@ -11,7 +11,7 @@ CubeCollider::CubeCollider(SceneItem *item) : Collider3D(item) {
   
 }
 
-bool_t CubeCollider::raycast(
+bool_t CubeCollider::performRaycast(
   struct Collider3DRayResult *result,
   struct Ray3D ray
 ) {

src/dawn/scene/components/physics/3d/CubeCollider.hpp

@@ -9,17 +9,18 @@
 
 namespace Dawn {
   class CubeCollider : public Collider3D {
+    protected:
+      bool_t performRaycast(
+        struct Collider3DRayResult *result,
+        struct Ray3D ray
+      ) override;
+
     public:
       glm::vec3 min = glm::vec3(-0.5f, -0.5f, -0.5f);
       glm::vec3 max = glm::vec3(0.5f, 0.5f, 0.5f);
 
       CubeCollider(SceneItem *item);
 
-      bool_t raycast(
-        struct Collider3DRayResult *result,
-        struct Ray3D ray
-      ) override;
-
       enum Collider3DType getColliderType() override;
   };
 }

src/dawn/scene/debug/SceneDebugLine.cpp

@@ -7,6 +7,8 @@
 #include "display/shader/SimpleTexturedShader.hpp"
 #include "scene/components/display/Camera.hpp"
 #include "scene/Scene.hpp"
+#include "scene/components/physics/3d/Collider3D.hpp"
+#include "scene/components/physics/3d/CubeCollider.hpp"
 
 using namespace Dawn;
 
@@ -140,4 +142,24 @@ void Scene::debugGrid() {
     line.v0 = glm::vec3(-s, 0, z), line.v1 = glm::vec3(s, 0, z);
     this->debugLine(line);
   }
+}
+
+void Scene::debugHitboxes() {
+  auto colliders = this->findComponents<Collider3D>();
+  auto itColliders = colliders.begin();
+  while(itColliders != colliders.end()) {
+    auto c = *itColliders;
+    switch(c->getColliderType()) {
+      case COLLIDER3D_TYPE_CUBE:
+        auto asCube = dynamic_cast<CubeCollider*>(c);
+        this->debugCube((struct SceneDebugCube){
+          .min = asCube->min,
+          .max = asCube->max,
+          .color = COLOR_BLUE,
+          .transform = asCube->transform->getWorldTransform()
+        });
+        break;
+    }
+    ++itColliders;
+  }
 }

src/dawntictactoe/components/TicTacToeGame.cpp

@@ -28,18 +28,19 @@ void TicTacToeGame::onSceneUpdate() {
   if(camera == nullptr) return;
 
   struct Ray3D ray;
-  ray.origin = glm::vec3(1,2,3);
+  ray.origin = camera->transform->getWorldPosition();
   ray.direction = camera->getRayDirectionFromScreenSpace(mouse);
+  std::cout << "World " << ray.origin.x << ", " << ray.origin.y << ", "  << ray.origin.z << std::endl;
 
-  auto collider = getScene()->findComponent<CubeCollider>();
-  if(collider == nullptr) return;
-
-  struct Collider3DRayResult result;
-  auto test = collider->raycast(&result, ray);
-
-  if(test) {
-    getScene()->debugRay((struct SceneDebugRay){ .start = result.point, .direction = result.normal, .color = COLOR_BLUE });
-  } else {
-    getScene()->debugRay((struct SceneDebugRay){ .start = ray.origin, .direction = ray.direction });
+  auto results = getPhysics()->raycast3DAll(ray);
+  auto itResult = results.begin();
+  while(itResult != results.end()) {
+    auto result = *itResult;
+    getScene()->debugRay((struct SceneDebugRay){
+      .start = result.point,
+      .direction = result.normal,
+      .color = COLOR_BLUE
+    });
+    ++itResult;
   }
 }

src/dawntictactoe/prefabs/TicTacToeTilePrefab.hpp

@@ -9,7 +9,7 @@
 #include "scene/components/display/MeshHost.hpp"
 #include "scene/components/display/MeshRenderer.hpp"
 #include "scene/components/display/material/SimpleTexturedMaterial.hpp"
-#include "scene/components/physics/2d/BoxCollider.hpp"
+#include "scene/components/physics/3d/CubeCollider.hpp"
 #include "components/TicTacToeTile.hpp"
 
 namespace Dawn {
@@ -28,7 +28,7 @@ namespace Dawn {
       MeshRenderer *meshRenderer;
       SimpleTexturedMaterial *material;
       TicTacToeTile *ticTacToe;
-      BoxCollider *boxCollider;
+      CubeCollider *collider;
 
       TicTacToeTilePrefab(Scene *s, sceneitemid_t i) :
         SceneItemPrefab<TicTacToeTilePrefab>(s,i)
@@ -52,9 +52,9 @@ namespace Dawn {
         sprite->setSize(glm::vec2(1, 1));
         sprite->setTile(0x01);
 
-        boxCollider = this->addComponent<BoxCollider>();
-        boxCollider->min = glm::vec2();
-        boxCollider->max = glm::vec2(1, 1);
+        collider = this->addComponent<CubeCollider>();
+        collider->min = glm::vec3(-0.5f, -0.5f, -0.1f);
+        collider->max = glm::vec3( 0.5f,  0.5f,  0.1f);
 
         ticTacToe = this->addComponent<TicTacToeTile>();
       }

src/dawntictactoe/scenes/TicTacToeScene.hpp

@@ -19,7 +19,8 @@ namespace Dawn {
         camera = Camera::create(this);
         // camera->transform->lookAt(glm::vec3(0, 0, 5), glm::vec3(0, 0, 0));
         // camera->type = CAMERA_TYPE_ORTHONOGRAPHIC;
-        camera->transform->lookAt(glm::vec3(1, 2, 3), glm::vec3(0, 0, 0));
+        // camera->transform->lookAt(glm::vec3(1, 2, 3), glm::vec3(0, 0, 0));
+        camera->transform->lookAt(glm::vec3(0, 0, 3), glm::vec3(0, 0, 0));
 
         float_t s = 2.0f;
         camera->orthoTop = s;
@@ -29,10 +30,6 @@ namespace Dawn {
         camera->orthoLeft = -s * ratio;
         camera->orthoRight = s * ratio;
 
-        auto cube = SimpleSpinningCubePrefab::create(this);
-        // TriangleMesh::createTriangleMesh(&cube->meshHost->mesh);
-        // SphereMesh::createSphere(&cube->meshHost->mesh, 1.0f, 16, 16);
-
         auto gameItem = this->createSceneItem();
         auto game = gameItem->addComponent<TicTacToeGame>();