Displaying background in white for better lisibility.

src/display.c

@@ -38,7 +38,7 @@ inline void display_update(void)
 
 inline void display_clear(void)
 {
-    SDL_SetRenderDrawColor(renderer, C_BLACK);
+    SDL_SetRenderDrawColor(renderer, C_WHITE);
     SDL_RenderClear(renderer);
 }
 

src/headers/display.h

@@ -5,6 +5,7 @@
 #include "vector2d.h"
 
 #define C_BLACK 0, 0, 0, 255
+#define C_WHITE 255, 255, 255, 255
 
 #define DISPLAY_WIDTH 396
 #define DISPLAY_HEIGHT 224