restructure v2

game/game.cpp

@@ -1,23 +1,54 @@
 
-#include <iostream>
+#include <engine/Backend/Shader.h>
+#include <engine/Backend/Camera.h>
+#include <engine/Backend/Model.h>
+
 #include <glad/glad.h>
+#include <optional>
+
+#include <glm/gtc/matrix_transform.hpp>
 
 namespace game
 {
+    const int SCREEN_WIDTH = 1366;
+    const int SCREEN_HEIGHT = 768;
+
+    std::optional<Shader> shader;
+    std::optional<Model> model;
+    std::optional<Camera> camera;
+
+    float lastX = SCREEN_WIDTH / 2.0f;
+    float lastY = SCREEN_HEIGHT / 2.0f;
+    bool firstMouse = true;
+
     bool Init()
     {
+        shader.emplace("assets/shaders/basicVertex.vert", "assets/shaders/basicFragment.frag");
+        shader->Use();
+
+        camera.emplace(glm::vec3(0.0f, 0.0f, 0.0f));
+        model.emplace("assets/models/sponza/Sponza.gltf");
+
         return true;
     }
 
     void PreFrame()
     {
+        glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
+        glClear(GL_COLOR_BUFFER_BIT);
 
+        shader->Use();
+
+        camera->Update(shader.value(), SCREEN_WIDTH, SCREEN_HEIGHT);
     }
 
     void Render()
     {
-        glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
-        glClear(GL_COLOR_BUFFER_BIT);
+        glm::mat4 modelTransform = glm::mat4(1.0f);
+        modelTransform = glm::translate(modelTransform, glm::vec3(0.0f, 0.0f, 0.0f));
+        modelTransform = glm::scale(modelTransform, glm::vec3(0.02f, 0.02f, 0.02f));
+        shader->setMat4("model", modelTransform);
+        model->Draw(shader.value());
     }
 
     void Update()
@@ -34,4 +65,5 @@ namespace game
     {
 
     }
-}
+}
+