Allowed scene items cleanup to happen earlier to prevent access null weak pointers. Also added Sphere Mesh and Sphere Collider(s)

src/dawn/component/physics/BoxCollider.cpp

@@ -1,14 +0,0 @@
-// Copyright (c) 2024 Dominic Masters
-// 
-// This software is released under the MIT License.
-// https://opensource.org/licenses/MIT
-
-#include "BoxCollider.hpp"
-
-using namespace Dawn;
-
-std::shared_ptr<JPH::ShapeSettings> BoxCollider::getShapeSettings() {
-  return std::make_shared<JPH::BoxShapeSettings>(
-    JPH::Vec3(shape.x, shape.y, shape.z)
-  );
-}

src/dawn/component/physics/CMakeLists.txt

@@ -6,5 +6,6 @@
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     Collider.cpp
-    BoxCollider.cpp
+    CubeCollider.cpp
+    SphereCollider.cpp
 )

src/dawn/component/physics/Collider.cpp

@@ -11,6 +11,29 @@ using namespace Dawn;
 using namespace JPH;
 using namespace JPH::literals;
 
+EMotionType Collider::getMotionType(const ColliderType colliderType) {
+  EMotionType motionType;
+
+  switch(colliderType) {
+    case ColliderType::DYNAMIC:
+      return EMotionType::Dynamic;
+      break;
+
+    case ColliderType::STATIC:
+      return EMotionType::Static;
+      break;
+
+    case ColliderType::KINEMATIC:
+      return EMotionType::Kinematic;
+      break;
+  }
+
+  assertUnreachable("Invalid ColliderType");
+  return EMotionType::Kinematic;
+}
+
+//
+
 void Collider::onInit() {
   assertNull(this->body, "Body is not NULL?");
 
@@ -24,7 +47,7 @@ void Collider::onInit() {
     shape,
     RVec3(pos.x, pos.y, pos.z),
     Quat::sIdentity(),
-    EMotionType::Dynamic,
+    Collider::getMotionType(this->colliderType),
     layer
   );
 
@@ -40,10 +63,46 @@ void Collider::onDispose() {
   getBodyInterface().DestroyBody(this->bodyId);
 }
 
+void Collider::notifyShapeChanged() {
+  if(!this->isColliderReady()) return;
+
+  auto settings = this->getShapeSettings();
+  auto shapeResult = settings->Create();
+  auto shape = shapeResult.Get();
+
+  getBodyInterface().SetShape(
+    this->bodyId,
+    shape,
+    // TODO: I may not always need to re-activate the body here.
+    true,
+    EActivation::Activate
+  );
+}
+
+bool_t Collider::isColliderReady() {
+  return this->body != nullptr;
+}
+
 BodyInterface & Collider::getBodyInterface() {
   return getGame()->physicsManager->getBodyInterface();
 }
 
+ColliderType Collider::getColliderType() {
+  return colliderType;
+}
+
 BodyID Collider::getBodyId() {
   return bodyId;
+}
+
+void Collider::setColliderType(const ColliderType type) {
+  this->colliderType = type;
+
+  if(!this->isColliderReady()) return;
+
+  getBodyInterface().SetMotionType(
+    this->bodyId,
+    Collider::getMotionType(type),
+    EActivation::Activate// TODO: Should be false on kinematics
+  );
 }

src/dawn/component/physics/Collider.hpp

@@ -16,10 +16,18 @@ namespace Dawn {
   class Collider : public SceneComponent {
     private:
       JPH::Body *body = nullptr;
+      ColliderType colliderType = ColliderType::DYNAMIC;
+
+      /**
+       * Returns the JoltPhysics motion type for the collider type.
+       * 
+       * @param colliderType The collider type.
+       * @return The JoltPhysics motion type.
+       */
+      static JPH::EMotionType getMotionType(const ColliderType colliderType);
 
     protected:
       JPH::BodyID bodyId;
-      JPH::EMotionType emotionType = JPH::EMotionType::Dynamic;
       JPH::ObjectLayer layer = 1;
 
       /**
@@ -36,17 +44,41 @@ namespace Dawn {
        */
       JPH::BodyInterface & getBodyInterface();
 
-    public:
-      ColliderType type = ColliderType::KINEMATIC;
+      /**
+       * Callable by subclasses to notify that the shape has changed.
+       */
+      void notifyShapeChanged();
 
+    public:
       void onInit() override;
       void onDispose() override;
 
+      /**
+       * Returns whether the collider is ready.
+       * 
+       * @return Whether the collider is ready.
+       */
+      bool_t isColliderReady();
+
+      /**
+       * Returns the collider type.
+       * 
+       * @return The collider type.
+       */
+      ColliderType getColliderType();
+
       /**
        * Returns the JoltPhysics body ID of the collider.
        * 
        * @return The body ID of the collider.
        */
       JPH::BodyID getBodyId();
+
+      /**
+       * Sets the collider type.
+       * 
+       * @param colliderType The collider type.
+       */
+      void setColliderType(ColliderType colliderType);
   };
 }

src/dawn/component/physics/CubeCollider.cpp

@@ -0,0 +1,23 @@
+// Copyright (c) 2024 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "CubeCollider.hpp"
+
+using namespace Dawn;
+
+std::shared_ptr<JPH::ShapeSettings> CubeCollider::getShapeSettings() {
+  return std::make_shared<JPH::BoxShapeSettings>(
+    JPH::Vec3(shape.x, shape.y, shape.z)
+  );
+}
+
+glm::vec3 CubeCollider::getShape() {
+  return shape;
+}
+
+void CubeCollider::setShape(const glm::vec3 &shape) {
+  this->shape = shape;
+  this->notifyShapeChanged();
+}

src/dawn/component/physics/CubeCollider.hpp

@@ -0,0 +1,32 @@
+// Copyright (c) 2024 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "Collider.hpp"
+
+namespace Dawn {
+  class CubeCollider : public Collider {
+    private:
+      glm::vec3 shape = glm::vec3(1, 1, 1);
+
+    protected:
+      std::shared_ptr<JPH::ShapeSettings> getShapeSettings() override;
+
+    public:
+      /**
+       * Returns the shape of the cube collider.
+       * 
+       * @return The shape of the cube collider.
+       */
+      glm::vec3 getShape();
+
+      /**
+       * Sets the shape of the cube collider.
+       * 
+       * @param shape The shape of the cube collider.
+       */
+      void setShape(const glm::vec3 &shape);
+  };
+}

src/dawn/component/physics/SphereCollider.cpp

@@ -0,0 +1,12 @@
+// Copyright (c) 2024 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "SphereCollider.hpp"
+
+using namespace Dawn;
+
+std::shared_ptr<JPH::ShapeSettings> SphereCollider::getShapeSettings() {
+  return std::make_shared<JPH::SphereShapeSettings>(radius);
+}

src/dawn/component/physics/SphereCollider.hpp

@@ -7,11 +7,11 @@
 #include "Collider.hpp"
 
 namespace Dawn {
-  class BoxCollider : public Collider {
+  class SphereCollider : public Collider {
     protected:
       std::shared_ptr<JPH::ShapeSettings> getShapeSettings() override;
 
     public:
-      glm::vec3 shape = glm::vec3(1, 1, 1);
+      float radius = 1.0f;
   };
 }

src/dawn/display/mesh/CMakeLists.txt

@@ -8,4 +8,5 @@ target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     CubeMesh.cpp
     QuadMesh.cpp
+    SphereMesh.cpp
 )

src/dawn/display/mesh/SphereMesh.cpp

@@ -0,0 +1,44 @@
+// Copyright (c) 2024 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "SphereMesh.hpp"
+
+using namespace Dawn;
+
+void SphereMesh::create(
+  std::shared_ptr<Mesh> mesh,
+  const float radius,
+  const uint32_t segments,
+  const uint32_t rings
+) {
+  // Create the vertices
+  std::vector<glm::vec3> vertices;
+  for(uint32_t r = 0; r < rings; ++r) {
+    for(uint32_t s = 0; s < segments; ++s) {
+      float const y = sin(-M_PI_2 + M_PI * r / rings);
+      float const x = cos(2 * M_PI * s / segments) * sin(M_PI * r / rings);
+      float const z = sin(2 * M_PI * s / segments) * sin(M_PI * r / rings);
+      vertices.push_back(glm::vec3(x, y, z) * radius);
+    }
+  }
+
+  // Create the indices
+  std::vector<int32_t> indices;
+  for(uint32_t r = 0; r < rings - 1; ++r) {
+    for(uint32_t s = 0; s < segments - 1; ++s) {
+      indices.push_back(r * segments + s);
+      indices.push_back(r * segments + (s + 1));
+      indices.push_back((r + 1) * segments + (s + 1));
+
+      indices.push_back(r * segments + s);
+      indices.push_back((r + 1) * segments + (s + 1));
+      indices.push_back((r + 1) * segments + s);
+    }
+  }
+
+  mesh->createBuffers(vertices.size(), indices.size());
+  mesh->bufferPositions(0, vertices.data(), vertices.size());
+  mesh->bufferIndices(0, indices.data(), indices.size());
+}

src/dawn/display/mesh/SphereMesh.hpp

@@ -0,0 +1,27 @@
+// Copyright (c) 2024 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "display/mesh/Mesh.hpp"
+
+namespace Dawn {
+  class SphereMesh {
+    public:
+      /**
+       * Creates a sphere mesh.
+       * 
+       * @param mesh The mesh to buffer into.
+       * @param radius The radius of the sphere.
+       * @param segments The number of segments.
+       * @param rings The number of rings.
+       */
+      static void create(
+        std::shared_ptr<Mesh> mesh,
+        const float radius = 1.0f,
+        const uint32_t segments = 16,
+        const uint32_t rings = 16
+      );
+  };
+}

src/dawn/game/IGame.cpp

@@ -5,6 +5,7 @@
 
 #include "game/Game.hpp"
 #include "scene/Scene.hpp"
+#include "util/Flag.hpp"
 
 using namespace Dawn;
 
@@ -13,6 +14,9 @@ IGame::IGame() {
 }
 
 void IGame::init() {
+  assertFlagOff(state, GAME_STATE_INITIALIZED, "Game already initialized?");
+  Flag::turnOn<uint8_t>(state, GAME_STATE_INITIALIZED);
+
   auto selfAsGame = this->getSelfAsGame();
 
   renderHost = std::make_shared<RenderHost>();
@@ -36,12 +40,29 @@ void IGame::init() {
   nextFrameScene = std::make_shared<Scene>(selfAsGame, initialScene);
 }
 
+void IGame::deinit() {
+  assertFlagOn(state, GAME_STATE_INITIALIZED, "Game not initialized?");
+
+  if(currentScene) currentScene->deinit();
+  currentScene = nullptr;
+  
+  if(nextFrameScene) nextFrameScene->deinit();
+  nextFrameScene = nullptr;
+
+  physicsManager = nullptr;
+  assetManager = nullptr;
+  renderHost = nullptr;
+
+  Flag::turnOff<uint8_t>(state, GAME_STATE_INITIALIZED);
+}
+
 void IGame::update() {
   this->assetManager->update();
   this->inputManager.update();
 
   if(nextFrameScene) {
-    nextFrameScene->stage();
+    if(currentScene) currentScene->deinit();
+    nextFrameScene->init();
     currentScene = nextFrameScene;
     nextFrameScene = nullptr;
   }
@@ -67,8 +88,5 @@ std::shared_ptr<Game> IGame::getSelfAsGame() {
 }
 
 IGame::~IGame() {
-  currentScene = nullptr;
-  nextFrameScene = nullptr;
-  assetManager = nullptr;
-  renderHost = nullptr;
+  assertFlagOff(state, GAME_STATE_INITIALIZED, "Game not deinited properly?");
 }

src/dawn/game/IGame.hpp

@@ -13,6 +13,8 @@
 #include "save/SaveManager.hpp"
 #include "physics/PhysicsManager.hpp"
 
+#define GAME_STATE_INITIALIZED 0x01
+
 namespace Dawn {
   class Scene;
   class Game;
@@ -21,6 +23,7 @@ namespace Dawn {
     private:
       std::shared_ptr<Scene> currentScene = nullptr;
       std::shared_ptr<Scene> nextFrameScene = nullptr;
+      uint8_t state = 0;
 
     protected:
       /**
@@ -62,6 +65,11 @@ namespace Dawn {
        */
       void init();
 
+      /**
+       * Deinitialize the game and all of its components.
+       */
+      void deinit();
+
       /**
        * Performs a single update tick on the game engine, and in turn all of
        * the game's sub systems.

src/dawn/physics/PhysicsManager.cpp

@@ -232,38 +232,7 @@ void PhysicsManager::init(const std::shared_ptr<Game> &game) {
   );
 
   physicsSystem.SetBodyActivationListener(&bodyActivationListener);
-
   physicsSystem.SetContactListener(&contactListener);
-
-  BodyInterface &bodyInterface = physicsSystem.GetBodyInterface();
-
-  BoxShapeSettings floorShapeSettings(Vec3(100.0f, 1.0f, 100.0f));
-  floorShapeSettings.SetEmbedded();
-  ShapeSettings::ShapeResult floorShapeResult = floorShapeSettings.Create();
-  ShapeRefC floorShape = floorShapeResult.Get();
-  BodyCreationSettings floorSettings(
-    floorShape,
-    RVec3(0.0_r, -1.0_r, 0.0_r),
-    Quat::sIdentity(),
-    EMotionType::Static,
-    Layers::NON_MOVING
-  );
-  Body *floor = bodyInterface.CreateBody(floorSettings);
-  bodyInterface.AddBody(floor->GetID(), EActivation::DontActivate);
-
-  // BodyCreationSettings sphereSettings(
-  //   new SphereShape(0.5f),
-  //   RVec3(0.0_r, 2.0_r, 0.0_r),
-  //   Quat::sIdentity(),
-  //   EMotionType::Dynamic,
-  //   Layers::MOVING
-  // );
-  // sphereId = bodyInterface.CreateAndAddBody(
-  //   sphereSettings,
-  //   EActivation::Activate
-  // );
-  // bodyInterface.SetLinearVelocity(sphereId, Vec3(0.0f, -5.0f, 0.0f));
-  // physicsSystem.OptimizeBroadPhase();
 }
 
 void PhysicsManager::update() {

src/dawn/scene/Scene.cpp

@@ -16,11 +16,22 @@ Scene::Scene(
 {
 }
 
-void Scene::stage() {
+void Scene::init() {
   Scene &selfReference = *this;
   sceneInitializer(selfReference);
 }
 
+void Scene::deinit() {
+  if(!this->hasInitialized) return;
+  this->hasInitialized = false;
+
+  auto items = this->sceneItems;
+  for(auto &item : items) {
+    item->deinit();
+  }
+  sceneItems.clear();
+}
+
 void Scene::update() {
   // Initialize new scene items
   if(!hasInitialized) {
@@ -34,8 +45,11 @@ void Scene::update() {
   auto itRemove = sceneItemsToRemove.begin();
   while(itRemove != sceneItemsToRemove.end()) {
     auto item = *itRemove;
+    item->deinit();
     auto it = std::find(sceneItems.begin(), sceneItems.end(), item);
-    if(it != sceneItems.end()) sceneItems.erase(it);
+    if(it != sceneItems.end()) {
+      sceneItems.erase(it);
+    }
     itRemove++;
   }
   sceneItemsToRemove.clear();
@@ -63,8 +77,12 @@ std::shared_ptr<SceneItem> Scene::createSceneItem() {
 }
 
 void Scene::removeItem(const std::shared_ptr<SceneItem> item) {
+  auto index = std::find(sceneItems.begin(), sceneItems.end(), item);
+  if(index == sceneItems.end()) return;
+  
   sceneItemsToRemove.push_back(item);
 }
 
 Scene::~Scene() {
+  this->deinit();
 }

src/dawn/scene/Scene.hpp

@@ -44,7 +44,12 @@ namespace Dawn {
       /**
        * Stages all of the scene items on the scene.
        */
-      void stage();
+      void init();
+
+      /**
+       * Called when the scene is supposed to be deinitialized.
+       */
+      void deinit();
 
       /**
        * Called by the game every frame that the scene is set as the currently

src/dawn/scene/SceneComponent.cpp

@@ -57,17 +57,17 @@ bool_t SceneComponent::isInitialized() {
 }
 
 std::shared_ptr<SceneItem> SceneComponent::getItem() {
-  return this->item.lock();
+  auto item = this->item.lock();
+  assertNotNull(item, "SceneItem has unloaded?");
+  return item;
 }
 
 std::shared_ptr<Scene> SceneComponent::getScene() {
-  auto item = this->getItem();
-  return item->getScene();
+  return this->getItem()->getScene();
 }
 
 std::shared_ptr<Game> SceneComponent::getGame() {
-  auto scene = this->getScene();
-  return scene->getGame();
+  return this->getScene()->getGame();
 }
 
 SceneComponent::~SceneComponent() {

src/dawn/scene/SceneItem.cpp

@@ -20,7 +20,9 @@ std::shared_ptr<SceneItem> SceneItem::sceneItemComponentsSelf() {
 }
 
 std::shared_ptr<Scene> SceneItem::getScene() {
-  return scene.lock();
+  auto s = scene.lock();
+  assertNotNull(s, "Scene has unloaded?");
+  return s;
 }
 
 void SceneItem::init() {
@@ -50,6 +52,19 @@ void SceneItem::init() {
   }
 }
 
+void SceneItem::deinit() {
+  // Create copy of the components, components may chose to add more components
+  // but those sub components will not be disposed at this time.
+  auto components = this->components;
+
+  for(auto &component : components) {
+    if(!component->isInitialized()) continue;
+    component->dispose();
+  }
+
+  this->components.clear();
+}
+
 void SceneItem::remove() {
   auto scene = getScene();
   if(!scene) return;
@@ -57,11 +72,5 @@ void SceneItem::remove() {
 }
 
 SceneItem::~SceneItem() {
-  std::for_each(
-    components.begin(),
-    components.end(),
-    [](auto &component) {
-      component->dispose();
-    }
-  );
+  this->deinit();
 }

src/dawn/scene/SceneItem.hpp

@@ -35,6 +35,12 @@ namespace Dawn {
        */
       void init();
 
+      /**
+       * Called when the scene item is supposed to deinitialize. Should happen
+       * when the scene item is removed from the scene.
+       */
+      void deinit();
+
       /**
        * Returns the scene that this scene item belongs to.
        * 

src/dawnglfw/display/RenderHost.cpp

@@ -103,7 +103,7 @@ void RenderHost::update(const std::shared_ptr<Game> game) {
   glDepthFunc(GL_LESS);
   assertNoGLError();
 
-  // glEnable(GL_DEPTH_TEST);
+  glEnable(GL_DEPTH_TEST);
   assertNoGLError();
   
   glEnable(GL_BLEND);

src/dawnlinux/main.cpp

@@ -73,6 +73,7 @@ int32_t main(int32_t argc, const char **argv) {
     game->update();
   }
 
+  game->deinit();
   game = nullptr;
 
   return 0;

src/dawnrpg/scene/HelloWorldScene.cpp

@@ -11,17 +11,44 @@
 #include "component/display/material/SimpleTexturedMaterial.hpp"
 #include "component/display/MeshRenderer.hpp"
 #include "display/mesh/CubeMesh.hpp"
-#include "component/physics/BoxCollider.hpp"
+#include "display/mesh/SphereMesh.hpp"
+#include "component/physics/CubeCollider.hpp"
+#include "component/physics/SphereCollider.hpp"
 
 using namespace Dawn;
 
 void Dawn::helloWorldScene(Scene &s) {
   auto cameraItem = s.createSceneItem();
   auto camera = cameraItem->addComponent<Camera>();
-  cameraItem->lookAt({ 5, 5, 5 }, { 0, 0, 0 }, { 0, 1, 0 });
+  cameraItem->lookAt({ 20, 20, 20 }, { 0, 0, 0 }, { 0, 1, 0 });
   camera->clipFar = 99999.99f;
 
   // Ground
+  {
+    // Create the scene item.
+    auto groundItem = s.createSceneItem();
+    groundItem->setLocalPosition(glm::vec3(0, 0, 0));
+
+    // Create a simple cube mesh.
+    auto groundMesh = std::make_shared<Mesh>();
+    groundMesh->createBuffers(CUBE_VERTICE_COUNT, CUBE_INDICE_COUNT);
+    CubeMesh::buffer(groundMesh, glm::vec3(-15, -1, -15), glm::vec3(30, 2, 30), 0, 0);
+
+    // Add a renderer to the scene item.
+    auto groundMeshRenderer = groundItem->addComponent<MeshRenderer>();
+    groundMeshRenderer->mesh = groundMesh;
+
+    // Add a material to the scene item.
+    auto groundMaterial = groundItem->addComponent<SimpleTexturedMaterial>();
+    groundMaterial->setColor(COLOR_LIGHT_GREY);
+
+    // Add collider
+    auto groundCollider = groundItem->addComponent<CubeCollider>();
+    groundCollider->setColliderType(ColliderType::STATIC);
+    groundCollider->setShape(glm::vec3(15, 1, 15));
+  }
+
+  // Box
   {
     // Create the scene item.
     auto cubeItem = s.createSceneItem();
@@ -41,13 +68,14 @@ void Dawn::helloWorldScene(Scene &s) {
     cubeMaterial->setColor(COLOR_MAGENTA);
 
     // Add collider
-    auto boxCollider = cubeItem->addComponent<BoxCollider>();
+    auto cubeCollider = cubeItem->addComponent<CubeCollider>();
   }
 
+  // Other Box
   {
     // Create the scene item.
     auto cubeItem = s.createSceneItem();
-    cubeItem->setLocalPosition(glm::vec3(0.88f, 13, 0.1f));
+    cubeItem->setLocalPosition(glm::vec3(0.75f, 15, 0.1f));
 
     // Create a simple cube mesh.
     auto cubeMesh = std::make_shared<Mesh>();
@@ -63,6 +91,28 @@ void Dawn::helloWorldScene(Scene &s) {
     cubeMaterial->setColor(COLOR_MAGENTA);
 
     // Add collider
-    auto boxCollider = cubeItem->addComponent<BoxCollider>();
+    auto cubeCollider = cubeItem->addComponent<CubeCollider>();
+  }
+
+  // Ball
+  {
+    // Create the scene item.
+    auto sphereItem = s.createSceneItem();
+    sphereItem->setLocalPosition(glm::vec3(-1.0f, 13, -0.6f));
+
+    // Create a simple cube mesh.
+    auto sphereMesh = std::make_shared<Mesh>();
+    SphereMesh::create(sphereMesh, 1.0f);
+
+    // Add a renderer to the scene item.
+    auto sphereMeshRenderer = sphereItem->addComponent<MeshRenderer>();
+    sphereMeshRenderer->mesh = sphereMesh;
+
+    // Add a material to the scene item.
+    auto sphereMaterial = sphereItem->addComponent<SimpleTexturedMaterial>();
+    sphereMaterial->setColor(COLOR_CYAN);
+
+    // Add collider
+    auto sphereCollider = sphereItem->addComponent<SphereCollider>();
   }
 }