Created the Window and Renderer and started implementing the functions

for the game loop

src/Renderer.c

@@ -0,0 +1,58 @@
+#include "Renderer.h"
+#include "SDL.h"
+#include "SDL_render.h"
+#include "engine_build_config.h"
+#include <stdbool.h>
+#include <stdlib.h>
+
+#ifdef DEBUG_ENGINE
+#include <stdio.h>
+#endif /* DEBUG_ENGINE */
+
+typedef struct renderer {
+  SDL_Renderer *SDL_base_renderer;
+} Renderer;
+
+Renderer *create_renderer() { return (Renderer *)malloc(sizeof(Renderer)); }
+
+bool init_renderer(Renderer *renderer, SDL_Window *window) {
+  if (!renderer || !window) {
+    return false;
+  }
+
+  renderer->SDL_base_renderer = SDL_CreateRenderer(
+      window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
+
+  // Technically speaking, I believe it should be possible to just return
+  // the pointer. However, to make sure that everything is clear, I am
+  // performing a test that returns true or false based on whether the
+  // pointer was initialised or not.
+  return renderer->SDL_base_renderer ? true : false;
+}
+
+void render_clear(const Renderer *renderer, SDL_Color color) {
+  SDL_SetRenderDrawColor(renderer->SDL_base_renderer, color.r, color.r, color.b,
+                         color.a);
+
+  SDL_RenderClear(renderer->SDL_base_renderer);
+}
+
+void swap_buffers(const Renderer *renderer) {
+  SDL_RenderPresent(renderer->SDL_base_renderer);
+}
+
+void destroy_renderer(Renderer *renderer) {
+  if (renderer) {
+    if (renderer->SDL_base_renderer) {
+      SDL_DestroyRenderer(renderer->SDL_base_renderer);
+      renderer->SDL_base_renderer = NULL;
+    }
+
+    free(renderer);
+    renderer = NULL;
+
+#ifdef DEBUG_ENGINE
+    printf("Renderer destroyed successfully\n");
+#endif /* DEBUG_ENGINE */
+  }
+}