Refactor engine code

Engine/renderer/renderer.h

@@ -0,0 +1,71 @@
+#ifndef RENDERER_H
+#define RENDERER_H
+
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+#include <vector>
+#include <string>
+#include <cstdint>
+
+struct Vec3
+{
+    int x, y, z;
+    Vec3(int x_ = 0, int y_ = 0, int z_ = 0);
+};
+
+struct Vec2
+{
+    float x, y;
+    Vec2(float x_ = 0.0f, float y_ = 0.0f);
+};
+
+struct Color
+{
+    uint8_t r, g, b;
+    Color(uint8_t r_ = 255, uint8_t g_ = 255, uint8_t b_ = 255);
+};
+
+struct Matrix4
+{
+    int m[16];
+    Matrix4();
+};
+
+struct Triangle
+{
+    Vec3 v0, v1, v2;
+    Vec2 uv0, uv1, uv2;
+    Color color;
+    GLuint texture;
+};
+
+Vec3 matrix_multiply(const Matrix4 &mat, const Vec3 &v);
+
+Matrix4 matrix_multiply(const Matrix4 &a, const Matrix4 &b);
+
+Color convert_color(const Color &color);
+
+class Renderer
+{
+private:
+    GLFWwindow *window;
+    Matrix4 view_matrix;
+    int width;
+    int height;
+    int internal_width;
+    int internal_height;
+    std::string title;
+
+public:
+    Renderer(int width_, int height_, const std::string &title_);
+    ~Renderer();
+    void set_view_matrix(const Matrix4 &view);
+    void begin_frame();
+    void render(const std::vector<Triangle> &triangles);
+    void end_frame();
+    bool should_close();
+    GLuint load_texture(const std::string &filepath);
+    GLFWwindow *get_window() { return window; }
+};
+
+#endif