Added draw_rect() function

src/main.c

@@ -111,21 +111,28 @@ void clear_color_buffer(uint32_t color){
     }
 }
 
+void draw_rect(int x, int y, int width, int height, uint32_t color){
+    for (int j = x; j <= x + width; j ++){
+	for (int k = y; k <= y + height; k ++){
+	   color_buffer[(window_width * j) + k] = color;
+       }
+    }
+}
+
 void draw_grid(void){
     for (int y = 0; y < window_height; y += 10){
 	for (int x = 0; x < window_width; x += 10){
-	//	if (x % 10 == 0 || y % 10 == 0){
-		    color_buffer[(window_width * y) + x] = 0xFF333333;
+	    color_buffer[(window_width * y) + x ] = 0xFF133343;
 	}
     }
 }
- // }
 
 void render(void){
     SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
     SDL_RenderClear(renderer);
    
     draw_grid();
+    draw_rect(100, 200, 200, 400, 0xFF998500);
     render_color_buffer();
     clear_color_buffer(0xFF000000);