Example Triangle Pog

src/dawn/dawnlibs.hpp

@@ -27,6 +27,7 @@ extern "C" {
 #include <iostream>
 #include <thread>
 #include <map>
+#include <array>
 // #include <iterator>
 // #include <algorithm>
 // #include <string>

src/dawn/display/Shader.hpp

@@ -0,0 +1,11 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dawnlibs.hpp"
+
+namespace Dawn {
+  class Shader;
+}

src/dawn/display/mesh/TriangleMesh.hpp

@@ -0,0 +1,14 @@
+// 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"
+
+namespace Dawn {
+  class TriangleMesh {
+    public:
+      static void createTriangleMesh(std::shared_ptr<Mesh> mesh);
+  };
+}

src/dawn/display/mesh/_Mesh.hpp

@@ -0,0 +1,11 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dawnlibs.hpp"
+
+namespace Dawn {
+  class Mesh;
+}

src/dawn/scene/Scene.cpp

@@ -18,8 +18,8 @@ void Scene::update() {
   auto it = this->itemsNotInitialized.begin();
   while(it != this->itemsNotInitialized.end()) {
     this->items[it->first] = it->second;
-    it++;
     it->second->init();
+    ++it;
   }
   this->itemsNotInitialized.clear();
   

src/dawn/scene/Scene.hpp

@@ -28,6 +28,17 @@ namespace Dawn {
       
       void removeSceneItem(SceneItem *item);
 
+      template<class T>
+      std::shared_ptr<T> findComponent() {
+        auto it = this->items.begin();
+        while(it != this->items.end()) {
+          auto component = it->second->getComponent<T>();
+          if(component != nullptr) return component;
+          ++it;
+        }
+        return nullptr;
+      }
+
       ~Scene();
   };
 }

src/dawn/scene/SceneItem.hpp

@@ -11,7 +11,9 @@ namespace Dawn {
 
   class Scene;
 
-  class SceneItem {
+  class SceneItem :
+    public std::enable_shared_from_this<SceneItem>
+  {
     private:
       std::vector<std::shared_ptr<SceneItemComponent>> components;
 
@@ -25,7 +27,7 @@ namespace Dawn {
 
       template<class T>
       std::shared_ptr<T> addComponent() {
-        auto component = std::make_unique<T>(this);
+        auto component = std::make_shared<T>(weak_from_this());
         this->components.push_back(component);
         return component;
       }
@@ -34,10 +36,9 @@ namespace Dawn {
       std::shared_ptr<T> getComponent() {
         auto it = this->components.begin();
         while(it != this->components.end()) {
-          std::shared_ptr<T> castedAs = dynamic_cast<std::shared_ptr<T>>(*it);
+          auto castedAs = std::dynamic_pointer_cast<T>(*it);
           if(castedAs != nullptr) return castedAs;
-          it++;
-          continue;
+          ++it;
         }
         return nullptr;
       }

src/dawn/scene/components/CMakeLists.txt

@@ -7,4 +7,7 @@
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     DummyComponent.cpp
-)
+)
+
+# Subdirs
+add_subdirectory(display)

src/dawn/scene/components/Components.hpp

@@ -0,0 +1,9 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "scene/components/DummyComponent.hpp"
+#include "scene/components/display/Camera.hpp"
+#include "scene/components/display/MeshRenderer.hpp"

src/dawn/scene/components/display/CMakeLists.txt

@@ -0,0 +1,11 @@
+# Copyright (c) 2022 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    Camera.cpp
+    MeshRenderer.cpp
+)

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

@@ -0,0 +1,43 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "Camera.hpp"
+
+using namespace Dawn;
+
+Camera::Camera(std::weak_ptr<SceneItem> item) : SceneItemComponent(item) {
+}
+
+void Camera::updateProjection() {
+  switch(this->type) {
+    case CAMERA_TYPE_ORTHONOGRAPHIC:
+      this->projection = glm::ortho(
+        this->orthoLeft,
+        this->orthoRight,
+        this->orthoBottom,
+        this->orthoTop,
+        this->clipNear,
+        this->clipFar
+      );
+      break;
+
+    case CAMERA_TYPE_PERSPECTIVE:
+      this->projection = glm::perspective(
+        this->fov,
+        this->getAspect(),
+        this->clipNear,
+        this->clipFar
+      );
+      break;
+  }
+}
+
+float_t Camera::getAspect() {
+  return 16.0f / 9.0f;
+}
+
+void Camera::start() {
+  this->updateProjection();
+}

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

@@ -0,0 +1,57 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "scene/SceneItemComponent.hpp"
+
+namespace Dawn {
+  enum CameraType {
+    CAMERA_TYPE_ORTHONOGRAPHIC,
+    CAMERA_TYPE_PERSPECTIVE
+  };
+
+  class Camera : public SceneItemComponent {
+    public:
+      glm::mat4 projection;
+
+      // Perspective
+      enum CameraType type = CAMERA_TYPE_PERSPECTIVE;
+      float_t fov = 0.785398f;// 45 degrees
+
+      // Ortho
+      float_t orthoLeft = 0.0f;
+      float_t orthoRight = 1.0f;
+      float_t orthoBottom = 0.0f;
+      float_t orthoTop = 1.0f;
+
+      // Shared
+      float_t clipNear = 0.001f;
+      float_t clipFar = 100.0f;
+
+      /**
+       * Create a new Camera Component.
+       * 
+       * @param item SceneItem that this component belongs to.
+       */
+      Camera(std::weak_ptr<SceneItem> item);
+
+      /**
+       * Updates the projection matrix.
+       */
+      void updateProjection();
+
+      /**
+       * Returs the aspect ratio of the camera.
+       * 
+       * @return The aspect ratio of the camera.
+       */
+      float_t getAspect();
+
+      /**
+       * Event triggered by the scene item when the item is added to the scene.
+       */
+      void start() override;
+  };
+}

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

@@ -0,0 +1,18 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "MeshRenderer.hpp"
+
+using namespace Dawn;
+
+MeshRenderer::MeshRenderer(std::weak_ptr<SceneItem> item) :
+  SceneItemComponent(item)
+{
+  
+}
+
+void MeshRenderer::start() {
+
+}

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

@@ -0,0 +1,19 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "scene/SceneItemComponent.hpp"
+#include "display/mesh/Mesh.hpp"
+
+namespace Dawn {
+  class MeshRenderer : public SceneItemComponent {
+    public:
+      std::shared_ptr<Mesh> mesh = nullptr;
+
+      MeshRenderer(std::weak_ptr<SceneItem> item);
+
+      void start() override;
+  };
+}

src/dawnopengl/display/CMakeLists.txt

@@ -7,4 +7,7 @@
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     RenderManager.cpp
-)
+)
+
+# Subdirs
+add_subdirectory(mesh)

src/dawnopengl/display/mesh/CMakeLists.txt

@@ -0,0 +1,11 @@
+# Copyright (c) 2022 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    Mesh.cpp
+    TriangleMesh.cpp
+)

src/dawnopengl/display/mesh/Mesh.cpp

@@ -0,0 +1,118 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "Mesh.hpp"
+
+using namespace Dawn;
+
+void Mesh::createBuffers(
+  int32_t verticeCount,
+  int32_t indiceCount
+) {
+  if(verticeCount <= 0) throw "Vertice count must be greater than zero.";
+  if(indiceCount <= 0) throw "Indice count must be greater than zero.";
+
+  this->disposeBuffers();
+
+  this->verticeCount = verticeCount;
+  this->indiceCount = indiceCount;
+
+  auto sizePos = sizeof(glm::vec3) * verticeCount;
+  auto sizeInds = sizeof(meshindice_t) * indiceCount;
+  auto sizeCoords = sizeof(glm::vec2) * verticeCount;
+
+  // Create some buffers, one for the vertex data, one for the indices
+  GLuint buffer[2];
+  glGenBuffers(2, buffer);
+  this->vertexBuffer = buffer[0];
+  if(this->vertexBuffer < 0) throw "Failed to create vertex buffer";
+  this->indexBuffer = buffer[1];
+  if(this->indexBuffer < 0) throw "Failed to create index buffer";
+
+  // Buffer an empty set of data then buffer each component
+  glBindBuffer(GL_ARRAY_BUFFER, this->vertexBuffer);
+  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->indexBuffer);
+  glBufferData(GL_ARRAY_BUFFER, sizePos+sizeCoords, 0, GL_DYNAMIC_DRAW);
+  glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeInds, 0, GL_DYNAMIC_DRAW);
+
+  // Setup the attrib pointers
+  size_t offset = 0;
+  glVertexAttribPointer(
+    0, sizeof(glm::vec3) / sizeof(float_t),
+    GL_FLOAT, GL_FALSE,
+    0, (void *)offset
+  );
+  glEnableVertexAttribArray(0);
+
+  offset += sizePos;
+  glVertexAttribPointer(
+    1, sizeof(glm::vec2) / sizeof(float_t),
+    GL_FLOAT, GL_FALSE,
+    0, (void *)offset
+  );
+  glEnableVertexAttribArray(1);
+}
+
+void Mesh::disposeBuffers() {
+  glBindBuffer(GL_ARRAY_BUFFER, 0);
+  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+
+  if(this->vertexBuffer != -1) {
+    glDeleteBuffers(1, &this->vertexBuffer);
+    this->vertexBuffer = -1;
+    this->verticeCount = -1;
+  }
+
+  if(this->indexBuffer != -1) {
+    glDeleteBuffers(1, &this->indexBuffer);
+    this->indexBuffer = -1;
+    this->indiceCount = -1;
+  }
+}
+
+void Mesh::draw(
+  enum MeshDrawMode drawMode,
+  int32_t start,
+  int32_t count
+) {
+  if(
+    count == 0 ||
+    this->vertexBuffer == -1 ||
+    this->indexBuffer == -1
+  ) return;
+
+  if(count == -1) count = this->indiceCount;
+  
+  
+  // Re-Bind the buffers
+  glBindBuffer(GL_ARRAY_BUFFER, this->vertexBuffer);
+  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->indexBuffer);
+
+  // Re-Calculate the attrib pointers.
+  size_t offset = 0;
+  glVertexAttribPointer(
+    0, sizeof(glm::vec3) / sizeof(float_t),
+    GL_FLOAT, GL_FALSE,
+    0, (void *)offset
+  );
+  glEnableVertexAttribArray(0);
+
+  offset += sizeof(glm::vec3) * this->verticeCount;
+  glVertexAttribPointer(
+    1, sizeof(glm::vec2) / sizeof(float_t),
+    GL_FLOAT, GL_FALSE,
+    0, (void *)offset
+  );
+  glEnableVertexAttribArray(1);
+
+  // Render the elements.
+  glDrawElements(
+    drawMode, count, GL_UNSIGNED_INT, (void *)(sizeof(meshindice_t) * start)
+  );
+}
+
+Mesh::~Mesh() {
+  this->disposeBuffers();
+}

src/dawnopengl/display/mesh/Mesh.hpp

@@ -0,0 +1,131 @@
+// 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"
+#include "dawnopengl.hpp"
+
+/** Indice that references a specific vertice */
+typedef int32_t meshindice_t;
+
+namespace Dawn {
+  enum MeshDrawMode {
+    MESH_DRAW_MODE_TRIANGLES = GL_TRIANGLES
+  };
+
+  class Mesh {
+    private:
+
+    protected:
+      /** Pointer to the vertex buffer on the GPU */
+      GLuint vertexBuffer = -1;
+      /** Pointer to the index buffer on the GPU */
+      GLuint indexBuffer = -1;
+
+      /** How many vertices are in the mesh */
+      int32_t verticeCount = -1;
+      /** How many indices are in the mesh */
+      int32_t indiceCount = -1;
+
+    public:
+      /**
+       * Create a new set of buffers for the mesh to use.
+       * 
+       * @param verticeCount How many Vertices will this buffer support.
+       * @param indiceCount How many Indices will this buffer support.
+       */
+      void createBuffers(
+        int32_t verticeCount,
+        int32_t indiceCount
+      );
+      
+      /**
+       * Cleanup the buffers on a given mesh. This is useful if you intend to
+       * expand the count of vertices your mesh supports.
+       */
+      void disposeBuffers();
+
+      /**
+       * Write vertice positions to the mesh.
+       * 
+       * @tparam N Size of the array, in terms of number of elements.
+       * @param position Position, within the buffer, to write to.
+       * @param vertices Array of positions to write.
+       */
+      template<size_t N>
+      void bufferPositions(
+        int32_t position,
+        std::array<glm::vec3, N> positions
+      ) {
+        glBindBuffer(GL_ARRAY_BUFFER, this->vertexBuffer);
+        glBufferSubData(
+          GL_ARRAY_BUFFER,
+          sizeof(glm::vec3) * position,
+          sizeof(positions),
+          (void *)positions.data()
+        );
+      }
+
+      /**
+       * Write vertice coordinates to the mesh.
+       * 
+       * @tparam N Size of the array, in terms of number of elements.
+       * @param position Position, within the buffer, to write to.
+       * @param coordinates Array of coordinates to write.
+       */
+      template<size_t N>
+      void bufferCoordinates(
+        int32_t position,
+        std::array<glm::vec2, N> coordinates
+      ) {
+        glBindBuffer(GL_ARRAY_BUFFER, this->vertexBuffer);
+        glBufferSubData(
+          GL_ARRAY_BUFFER,
+          sizeof(glm::vec2) * position,
+          sizeof(coordinates),
+          (void *)coordinates.data()
+        );
+      }
+
+      /**
+       * Write indices to the mesh.
+       * 
+       * @tparam N Size of the array, in terms of number of elements.
+       * @param position Position, within the buffer, to write to.
+       * @param indices Array of indices to write.
+       */
+      template<size_t N>
+      void bufferIndices(
+        int32_t position,
+        std::array<meshindice_t, N> indices
+      ) {
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->indexBuffer);
+        glBufferSubData(
+          GL_ELEMENT_ARRAY_BUFFER,
+          sizeof(meshindice_t) * position,
+          sizeof(indices),
+          (void *)indices.data()
+        );
+      }
+
+      /**
+       * Draw a primitive. Primitives are drawn by their indices.
+       * 
+       * @param drawMode Which drawing mode to use to draw the primitive.
+       * @param start Start indice (index) to draw.
+       * @param count Count of indices to draw. Use -1 to draw all.
+       */
+      void draw(
+        enum MeshDrawMode drawMode,
+        int32_t start,
+        int32_t count
+      );
+
+      /**
+       * Cleanup a previously initiated mesh.
+       */
+      ~Mesh();
+  };
+}

src/dawnopengl/display/mesh/TriangleMesh.cpp

@@ -0,0 +1,26 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "display/mesh/Mesh.hpp"
+#include "display/mesh/TriangleMesh.hpp"
+
+using namespace Dawn;
+
+void TriangleMesh::createTriangleMesh(std::shared_ptr<Mesh> mesh) {
+  mesh->createBuffers(3, 3);
+  mesh->bufferPositions(0, std::array<glm::vec3, 3>{{
+    glm::vec3(-1, 0, 0),
+    glm::vec3(0, 1, 0),
+    glm::vec3(1, 0, 0)
+  }});
+  mesh->bufferCoordinates(0, std::array<glm::vec2, 3>{{
+    glm::vec2(0, 0),
+    glm::vec2(0, 1),
+    glm::vec2(1, 0)
+  }});
+  mesh->bufferIndices(0, std::array<meshindice_t,3>{{
+    0, 1, 2
+  }});
+}

src/dawnpokergame/game/DawnPokerGame.cpp

@@ -16,13 +16,28 @@ DawnGame::DawnGame(std::weak_ptr<DawnHost> host) :
 int32_t DawnGame::init() {
   this->renderManager.init();
 
-  this->scene = std::make_unique<Scene>(weak_from_this());
+  this->scene = std::make_shared<Scene>(weak_from_this());
+
+  auto cameraObject = this->scene->createSceneItem();
+  auto camera = cameraObject->addComponent<Camera>();
+
+  auto cubeObject = this->scene->createSceneItem();
+  auto cubeMeshRenderer = cubeObject->addComponent<MeshRenderer>();
+  cubeMeshRenderer->mesh = std::make_shared<Mesh>();
+  TriangleMesh::createTriangleMesh(cubeMeshRenderer->mesh);
 
   return DAWN_GAME_INIT_RESULT_SUCCESS;
 }
 
 int32_t DawnGame::update(float_t delta) {
   this->renderManager.update();
+  if(this->scene != nullptr) this->scene->update();
+
+  auto meshRenderer = this->scene->findComponent<MeshRenderer>();
+  if(meshRenderer != nullptr) {
+    std::cout << "REndering" << std::endl;
+    meshRenderer->mesh->draw(MESH_DRAW_MODE_TRIANGLES, 0, -1);
+  }
 
   return DAWN_GAME_UPDATE_RESULT_SUCCESS;
 }

src/dawnpokergame/game/DawnPokerGame.hpp

@@ -4,4 +4,6 @@
 // https://opensource.org/licenses/MIT
 
 #pragma once
-#include "game/DawnGame.hpp"
+#include "game/DawnGame.hpp"
+#include "scene/components/Components.hpp"
+#include "display/mesh/TriangleMesh.hpp"