feat: add font class and render font function

include/Cubed/app.hpp

@@ -16,9 +16,11 @@ public:
     static void mouse_button_callback(GLFWwindow* window, int button, int action, int mods);
     static void window_focus_callback(GLFWwindow* window, int focused);
     static void window_reshape_callback(GLFWwindow* window, int new_width, int new_height);
+
     static int start_cubed_application(int argc, char** argv);
     
-    
+    static float delte_time();
+    static float get_fps();
 private:
     Camera m_camera;
     TextureManager m_texture_manager;
@@ -30,7 +32,12 @@ private:
     
     GLuint m_texture_array;
     
-    
+    inline static double last_time = glfwGetTime();
+    inline static double current_time = glfwGetTime();
+    inline static double delta_time = 0.0f;
+    inline static double fps_time_count = 0.0f;
+    inline static int frame_count = 0;
+    inline static int fps;
     
     
     void init();

include/Cubed/renderer.hpp

@@ -30,11 +30,13 @@ private:
     GLuint m_proj_loc;
 
     GLuint m_sky_vbo;
+    GLuint m_text_vbo;
     GLuint m_outline_indices_vbo;
     GLuint m_outline_vbo;
     GLuint m_ui_vbo;
 
     GLuint m_sky_program;
+    GLuint m_text_program;
     GLuint m_outline_program;
     GLuint m_ui_program;
     GLuint m_world_program;
@@ -47,5 +49,7 @@ private:
     std::vector<Vertex2D> m_ui;
     void render_outline();
     void render_sky();
+    void render_text(); 
     void render_ui();
+    
 };

include/Cubed/tools/font.hpp

@@ -0,0 +1,35 @@
+#pragma once
+#include <ft2build.h>
+#include FT_FREETYPE_H
+
+#include <glad/glad.h>
+#include <glm/glm.hpp>
+
+#include <string>
+#include <unordered_map>
+
+struct Character {
+    GLuint texture_id;
+    glm::ivec2 size;
+    glm::ivec2 bearing;
+    GLuint advance;
+};
+
+class Font {
+public:
+    Font();
+    ~Font();
+
+    static void render_text(GLuint program, GLuint vbo, const std::string& text, float x, float y, float scale, const glm::vec3& color);
+
+private:
+    FT_Library m_ft;
+    FT_Face m_face;
+
+    std::unordered_map<char8_t, Character> m_characters;
+
+    void load_character(char8_t c);
+    void setup_font_character();
+
+
+};