Basic transform stuff

src/dawn/dawnlibs.hpp

@@ -37,6 +37,7 @@ extern "C" {
 #include <glm/vec3.hpp>
 #include <glm/vec4.hpp>
 #include <glm/mat4x4.hpp>
+#include <glm/gtc/quaternion.hpp>
 #include <glm/ext/matrix_transform.hpp>
 #include <glm/ext/matrix_clip_space.hpp>
 #include <glm/ext/scalar_constants.hpp>

src/dawn/display/CMakeLists.txt

@@ -7,6 +7,7 @@
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     RenderPipeline.cpp
+    Transform.cpp
 )
 
 # Subdirs

src/dawn/display/RenderPipeline.cpp

@@ -58,18 +58,18 @@ void RenderPipeline::renderSceneCamera(Scene &scene, Camera &camera) {
   auto it = meshes.begin();
   while(it != meshes.end()) {
     auto mesh = *it;
-    auto item = mesh->item;
-    auto material = item.getComponent<Material>();
+    auto material = mesh->item.getComponent<Material>();
 
     // TODO: fallback material?
     if(material == nullptr) {
+      ++it;
       continue;
     }
 
     auto shader = material->getShader();
     shader->bind();
-    shader->setGlobalParameters(camera.projection, camera.item.transform);
-    shader->setMeshParameters(item.transform);
+    shader->setGlobalParameters(camera.projection, camera.transform.getWorldTransform());
+    shader->setMeshParameters(mesh->item.transform.getWorldTransform());
     material->setShaderParameters();
 
     mesh->mesh->draw(MESH_DRAW_MODE_TRIANGLES, 0, -1);

src/dawn/display/Transform.cpp

@@ -0,0 +1,156 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "Transform.hpp"
+#include "scene/SceneItem.hpp"
+
+using namespace Dawn;
+
+Transform::Transform(SceneItem &item) :
+  item(item),
+  transformLocal(1.0f),
+  transformWorld(1.0f)
+{
+  this->updateLocalValuesFromLocalTransform();
+}
+
+void Transform::updateLocalValuesFromLocalTransform() {
+  glm::vec3 skew;
+  glm::vec4 perspective;
+  glm::decompose(
+    this->transformLocal,
+    this->localScale,
+    this->localRotation,
+    this->localPosition,
+    skew, perspective
+  );
+}
+
+void Transform::updateLocalTransformFromLocalValues() {
+  glm::mat4 translate = glm::translate(glm::mat4(1.0), this->localPosition);
+  glm::mat4 rotate = glm::mat4_cast(this->localRotation);
+  glm::mat4 scale = glm::scale(glm::mat4(1.0), this->localScale);
+  this->transformLocal = translate * rotate * scale;
+  this->updateWorldTransformFromLocalTransform();
+}
+
+void Transform::updateWorldTransformFromLocalTransform() {
+  glm::mat4 newWorld(1.0f);
+  auto parent = this->getParent();
+  if(parent != nullptr) newWorld = parent->getWorldTransform();
+  this->transformWorld = newWorld * transformLocal;
+}
+
+void Transform::updateLocalTransformFromWorldTransform() {
+  glm::mat4 parentMat(1.0f);
+  auto parent = this->getParent();
+  if(parent != nullptr) parentMat = parent->getWorldTransform();
+  this->transformLocal = parentMat / this->transformWorld;
+  this->updateLocalValuesFromLocalTransform();
+}
+
+void Transform::updateChildrenTransforms() {
+  auto it = this->children.begin();
+  while(it != this->children.end()) {
+    (*it)->updateWorldTransformFromLocalTransform();
+    ++it;
+  }
+}
+
+void Transform::lookAt(glm::vec3 pos, glm::vec3 look) {
+  this->lookAt(pos, look, glm::vec3(0, 1, 0));
+}
+
+void Transform::lookAt(glm::vec3 pos, glm::vec3 look, glm::vec3 up) {
+  this->setWorldTransform(glm::lookAt(pos, look, up));
+}
+
+
+glm::vec3 Transform::getLocalPosition() {
+  return this->localPosition;
+}
+
+void Transform::setLocalPosition(glm::vec3 position) {
+  this->localPosition = position;
+  this->updateLocalTransformFromLocalValues();
+  this->updateChildrenTransforms();
+}
+
+glm::vec3 Transform::getLocalScale() {
+  return this->scale;
+}
+
+void Transform::setLocalScale(glm::vec3 scale) {
+  this->localScale = scale;
+  this->updateLocalTransformFromLocalValues();
+  this->updateChildrenTransforms();
+}
+
+glm::quat Transform::getLocalRotation() {
+  return this->localRotation;
+}
+
+void Transform::setLocalRotation(glm::quat rotation) {
+  this->localRotation = rotation;
+  this->updateLocalTransformFromLocalValues();
+  this->updateChildrenTransforms();
+}
+
+
+glm::mat4 Transform::getLocalTransform() {
+  return this->transformLocal;
+}
+
+void Transform::setLocalTransform(glm::mat4 transform) {
+  this->transformLocal = transform;
+
+  this->updateLocalValuesFromLocalTransform();
+  this->updateChildrenTransforms();
+}
+
+glm::mat4 Transform::getWorldTransform() {
+  return this->transformWorld;
+}
+
+void Transform::setWorldTransform(glm::mat4 transform) {
+  this->transformWorld = transform;
+  this->updateLocalTransformFromWorldTransform();
+  this->updateChildrenTransforms();
+}
+
+
+void Transform::setParent(Transform *parent) {
+  if(parent == this) throw "Cannot self reference";
+  
+  auto currentParent = this->getParent();
+  if(currentParent == parent) return;
+
+  if(currentParent != nullptr) {
+    auto it = currentParent->children.begin();
+    while(it != currentParent->children.end()) {
+      if(*it == this) {
+        currentParent->children.erase(it);
+        break;
+      }
+      ++it;
+    }
+  }
+
+  this->parent = parent;
+  if(parent != nullptr) parent->children.push_back(this);
+}
+
+Transform * Transform::getParent() {
+  return this->parent;
+}
+
+Transform::~Transform() {
+  this->setParent(nullptr);
+  auto it = this->parent->children.begin();
+  while(it != this->parent->children.end()) {
+    (*it)->setParent(nullptr);
+    ++it;
+  }
+}

src/dawn/display/Transform.hpp

@@ -0,0 +1,69 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dawnlibs.hpp"
+#include "util/flag.hpp"
+
+namespace Dawn {
+  class SceneItem;
+
+  class Transform : public std::enable_shared_from_this<Transform> {
+    private:
+      // Local (real) values
+      glm::vec3 localPosition;
+      glm::vec3 localScale;
+      glm::quat localRotation;
+
+      // Cached (non-real) values
+      glm::mat4 transformLocal;
+      glm::mat4 transformWorld;
+
+      glm::vec3 position;
+      glm::vec3 scale;
+      glm::quat rotation;
+
+      // Heirarchy
+      Transform *parent = nullptr;
+      std::vector<Transform *> children;
+
+      // Hidden methods
+      void updateLocalValuesFromLocalTransform();
+      void updateLocalTransformFromLocalValues();
+      void updateWorldTransformFromLocalTransform();
+      void updateLocalTransformFromWorldTransform();
+      void updateChildrenTransforms();
+
+    public:
+      SceneItem &item;
+
+      Transform(SceneItem &item);
+
+      void lookAt(glm::vec3 position, glm::vec3 look);
+      void lookAt(glm::vec3 position, glm::vec3 look, glm::vec3 up);
+
+      glm::vec3 getLocalPosition();
+      void setLocalPosition(glm::vec3 position);
+
+      glm::vec3 getLocalScale();
+      void setLocalScale(glm::vec3 scale);
+      
+      glm::quat getLocalRotation();
+      void setLocalRotation(glm::quat rotation);
+      
+
+      glm::mat4 getLocalTransform();
+      void setLocalTransform(glm::mat4 transform);
+
+      glm::mat4 getWorldTransform();
+      void setWorldTransform(glm::mat4 transform);
+      
+
+      void setParent(Transform *p);
+      Transform * getParent();
+
+      ~Transform();
+  };
+} 

src/dawn/display/mesh/CMakeLists.txt

@@ -6,6 +6,7 @@
 # Sources
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
+    CubeMesh.cpp
     TriangleMesh.cpp
     QuadMesh.cpp
 )

src/dawn/display/mesh/CubeMesh.cpp

@@ -0,0 +1,64 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "CubeMesh.hpp"
+
+using namespace Dawn;
+
+void CubeMesh::buffer(
+  Mesh &mesh,
+  glm::vec3 pos, glm::vec3 size,
+  int32_t verticeStart, int32_t indiceStart
+) {
+  mesh.bufferPositions(verticeStart, std::array<glm::vec3, CUBE_VERTICE_COUNT>{{
+    pos, 
+    glm::vec3(pos.x+size.x, pos.y, pos.z),
+    glm::vec3(pos.x, pos.y+size.y, pos.z),
+    glm::vec3(pos.x+size.x, pos.y+size.y, pos.z),
+
+    glm::vec3(pos.x, pos.y, pos.z+size.z),
+    glm::vec3(pos.x+size.x, pos.y, pos.z+size.z),
+    glm::vec3(pos.x, pos.y+size.y, pos.z+size.z),
+    pos + size
+  }});
+
+  mesh.bufferCoordinates(verticeStart,std::array<glm::vec2,CUBE_VERTICE_COUNT>{{
+    glm::vec2(0, 0),
+    glm::vec2(1, 0),
+    glm::vec2(0, 1),
+    glm::vec2(1, 1),
+
+    glm::vec2(0, 0),
+    glm::vec2(1, 0),
+    glm::vec2(0, 1),
+    glm::vec2(1, 1)
+  }});
+
+  mesh.bufferIndices(indiceStart, std::array<meshindice_t, CUBE_INDICE_COUNT>{{
+    // Back
+    verticeStart, verticeStart + 1, verticeStart + 3,
+    verticeStart, verticeStart + 2, verticeStart + 3,
+
+    // Right
+    verticeStart + 1, verticeStart + 5, verticeStart + 7,
+    verticeStart + 1, verticeStart + 3, verticeStart + 7,
+
+    // Left
+    verticeStart + 4, verticeStart, verticeStart + 2,
+    verticeStart + 4, verticeStart + 6, verticeStart + 2,
+
+    // Front
+    verticeStart + 5, verticeStart + 4, verticeStart + 6,
+    verticeStart + 5, verticeStart + 7, verticeStart + 6,
+
+    // Top
+    verticeStart + 7, verticeStart + 2, verticeStart + 6,
+    verticeStart + 7, verticeStart + 3, verticeStart + 2,
+
+    // Bottom
+    verticeStart + 1, verticeStart, verticeStart + 4,
+    verticeStart + 1, verticeStart + 4, verticeStart + 5
+  }});
+}

src/dawn/display/mesh/CubeMesh.hpp

@@ -0,0 +1,21 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "display/mesh/Mesh.hpp"
+
+#define CUBE_VERTICE_COUNT 8
+#define CUBE_INDICE_COUNT 36
+
+namespace Dawn {
+  class CubeMesh {
+    public:
+      static void buffer(
+        Mesh &mesh,
+        glm::vec3 pos, glm::vec3 size,
+        int32_t verticeStart, int32_t indiceStart
+      );
+  };
+}

src/dawn/scene/Scene.cpp

@@ -35,5 +35,5 @@ std::shared_ptr<SceneItem> Scene::createSceneItem() {
 }
 
 Scene::~Scene() {
-
+  std::cout << "What the dick" << std::endl;
 }

src/dawn/scene/SceneItem.cpp

@@ -11,10 +11,8 @@ using namespace Dawn;
 SceneItem::SceneItem(Scene &scene, sceneitemid_t id) :
   scene(scene),
   id(id),
-  transform(1.0f)
+  transform(*this)
 {
-  this->id = id;
-  this->transform = glm::translate(this->transform, glm::vec3(0, 0, 0));
 }
 
 void SceneItem::init() {
@@ -22,5 +20,5 @@ void SceneItem::init() {
 }
 
 SceneItem::~SceneItem() {
-  
+  std::cout << "Scene item disposed" << std::endl;
 }

src/dawn/scene/SceneItem.hpp

@@ -5,6 +5,7 @@
 
 #pragma once
 #include "SceneItemComponent.hpp"
+#include "display/Transform.hpp"
 
 namespace Dawn {
   typedef int32_t sceneitemid_t;
@@ -18,7 +19,7 @@ namespace Dawn {
     public:
       Scene &scene;
       sceneitemid_t id;
-      glm::mat4 transform;
+      Transform transform;
 
       /**
        * Constructor for a SceneItem. Scene Items should only be called and

src/dawn/scene/SceneItemComponent.cpp

@@ -10,7 +10,10 @@
 
 using namespace Dawn;
 
-SceneItemComponent::SceneItemComponent(SceneItem &item) : item(item) {
+SceneItemComponent::SceneItemComponent(SceneItem &item) :
+  item(item),
+  transform(item.transform)
+{
 }
 
 Scene & SceneItemComponent::getScene() {

src/dawn/scene/SceneItemComponent.hpp

@@ -5,6 +5,7 @@
 
 #pragma once
 #include "dawnlibs.hpp"
+#include "display/Transform.hpp"
 
 namespace Dawn {
   class SceneItem;
@@ -14,6 +15,7 @@ namespace Dawn {
   class SceneItemComponent {
     public:
       SceneItem &item;
+      Transform &transform;
 
       /**
        * Constructs a new SceneItemComponent. Components are attached to

src/dawn/scene/components/display/Camera.cpp

@@ -41,14 +41,6 @@ void Camera::updateProjection() {
   }
 }
 
-void Camera::lookAt(glm::vec3 pos, glm::vec3 look) {
-  this->lookAt(pos, look, glm::vec3(0, 1, 0));
-}
-
-void Camera::lookAt(glm::vec3 pos, glm::vec3 look, glm::vec3 up) {
-  this->item.transform = glm::lookAt(pos, look, up);
-}
-
 RenderTarget & Camera::getRenderTarget() {
   if(this->target == nullptr) {
     return this->getGame().renderManager.getBackBuffer();

src/dawn/scene/components/display/Camera.hpp

@@ -48,9 +48,6 @@ namespace Dawn {
        */
       void updateProjection();
 
-      void lookAt(glm::vec3 position, glm::vec3 look);
-      void lookAt(glm::vec3 position, glm::vec3 look, glm::vec3 up);
-
       /**
        * Returns the intended render target for this camera to render to, will
        * automatically revert to the back buffer if no frame buffer is provided.

src/dawnopengl/display/RenderManager.cpp

@@ -21,6 +21,14 @@ RenderManager::RenderManager(DawnGame &game) :
 void RenderManager::init() {
   this->standardRenderPipeline->init();
   this->simpleShader->compile();
+
+  // Setup the alpha blend function.
+  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+  glEnable(GL_BLEND);
+  glEnable(GL_TEXTURE_2D);
+  glEnable(GL_DEPTH_TEST);
+  glDepthMask(GL_TRUE);
+  glDepthFunc(GL_LESS);
 }
 
 RenderTarget & RenderManager::getBackBuffer() {

src/dawnpokergame/game/DawnPokerGame.cpp

@@ -7,6 +7,22 @@
 
 using namespace Dawn;
 
+std::shared_ptr<SceneItem> cubeCreate(std::shared_ptr<Scene> scene) {
+  auto cubeObject = scene->createSceneItem();
+  auto cubeMeshRenderer = cubeObject->addComponent<MeshRenderer>();
+  auto cubeMaterial = cubeObject->addComponent<Material>();
+  cubeMeshRenderer->mesh = std::make_shared<Mesh>();
+  cubeMeshRenderer->mesh->createBuffers(CUBE_VERTICE_COUNT, CUBE_INDICE_COUNT);
+  CubeMesh::buffer( 
+    *cubeMeshRenderer->mesh,
+    glm::vec3(-0.5f, -0.5f, -0.5f), glm::vec3(1, 1, 1),
+    0, 0
+  );
+  return cubeObject;
+}
+
+std::shared_ptr<SceneItem> cubeParent;
+
 DawnGame::DawnGame(DawnHost &host) :
   host(host),
   renderManager(*this)
@@ -21,22 +37,14 @@ int32_t DawnGame::init() {
 
   auto cameraObject = this->scene->createSceneItem();
   auto camera = cameraObject->addComponent<Camera>();
-  camera->lookAt(glm::vec3(5, 5, 5), glm::vec3(0, 0, 0));
-
-  auto cubeObject = this->scene->createSceneItem();
-  auto cubeMeshRenderer = cubeObject->addComponent<MeshRenderer>();
-  auto cubeMaterial = cubeObject->addComponent<Material>();
-  cubeMeshRenderer->mesh = std::make_shared<Mesh>();
-  cubeMeshRenderer->mesh->createBuffers(QUAD_VERTICE_COUNT, QUAD_INDICE_COUNT);
-  QuadMesh::bufferQuadMeshWithZ(
-    *cubeMeshRenderer->mesh,
-    glm::vec2(-1, -1), glm::vec2(0, 0),
-    glm::vec2(1, 1), glm::vec2(1, 1),
-    0, 0, 0
-  );
-
-  auto textureAsset = this->assetManager.load<TextureAsset>("texture_test");
-  cubeMaterial->textureValues[cubeMaterial->getShader()->getParameterByName("u_Text")] = std::shared_ptr<Texture>(textureAsset->texture);
+  camera->transform.lookAt(glm::vec3(5, 5, 5), glm::vec3(0, 0, 0));
+  
+  cubeParent = cubeCreate(this->scene);
+  auto cubeChild = cubeCreate(this->scene);
+  cubeChild->getComponent<Material>()->colorValues[cubeChild->getComponent<Material>()->getShader()->getParameterByName("u_Color")] = COLOR_MAGENTA;
+  cubeChild->transform.setParent(&cubeParent->transform);
+  cubeChild->transform.setLocalPosition(glm::vec3(1, 0, 0));
+  cubeParent->transform.setLocalPosition(glm::vec3(-0.5f, 0, 0));
 
   return DAWN_GAME_INIT_RESULT_SUCCESS;
 }
@@ -45,6 +53,8 @@ int32_t DawnGame::update(float_t delta) {
   this->assetManager.update();
 
   if(this->scene != nullptr) this->scene->update();
+  
+  cubeParent->transform.setLocalPosition(cubeParent->transform.getLocalPosition() + glm::vec3(-delta, 0, 0));
 
   this->renderManager.update();
 

src/dawnpokergame/game/DawnPokerGame.hpp

@@ -8,4 +8,5 @@
 #include "scene/components/Components.hpp"
 #include "display/mesh/QuadMesh.hpp"
 #include "display/mesh/TriangleMesh.hpp"
+#include "display/mesh/CubeMesh.hpp"
 #include "asset/assets/TextureAsset.hpp"