Add logging

main.c

@@ -23,6 +23,8 @@
      needs.
 */
 
+#define SFG_LOG(str) ; ///< Can be redefined to log messages for better debug.
+
 /** Return 1 (0) if given key is pressed (not pressed). */
 int8_t SFG_keyPressed(uint8_t key);
 
@@ -259,6 +261,8 @@ void SFG_recompurePLayerDirection()
 
 void SFG_setLevel(const SFG_Level *level)
 {
+  SFG_LOG("setting and initializing level");
+
   SFG_currentLevel.levelPointer = level;
 
   for (uint8_t i = 0; i < 7; ++i)
@@ -272,6 +276,8 @@ void SFG_setLevel(const SFG_Level *level)
 
 void SFG_init()
 {
+  SFG_LOG("initializing game")
+
   SFG_frame = 0;
   SFG_lastFrameTimeMs = 0;
 
@@ -366,4 +372,6 @@ void SFG_mainLoopBody()
 
   if (timeNextFrame > timeNow)
     SFG_sleepMs((timeNextFrame - timeNow) / 2); // wait, relieve CPU
+  else
+    SFG_LOG("failed to reach target FPS!")
 }

platform_sdl.h

@@ -10,6 +10,9 @@
 
 #include "palette.h"
 
+#undef SFG_LOG
+#define SFG_LOG(str) printf("game: %s\n",str);
+
 const uint8_t *sdlKeyboardState;
 
 uint16_t screen[SFG_RESOLUTION_X * SFG_RESOLUTION_Y]; // RGB565 format
@@ -46,11 +49,9 @@ int8_t SFG_keyPressed(uint8_t key)
 
 int main()
 {
-  printf("starting\n");
-
-  SFG_init();
+  printf("SDL: starting\n");
 
-  printf("initializing SDL\n");
+  printf("SDL: initializing SDL\n");
 
   SDL_Window *window =
     SDL_CreateWindow("raycasting", SDL_WINDOWPOS_UNDEFINED,
@@ -67,6 +68,8 @@ int main()
 
   sdlKeyboardState = SDL_GetKeyboardState(NULL);
 
+  SFG_init();
+
   int running = 1;
 
   while (running)
@@ -85,13 +88,13 @@ int main()
     SDL_RenderPresent(renderer);
   }    
 
-  printf("freeing SDL\n");
+  printf("SDL: freeing SDL\n");
 
   SDL_DestroyTexture(texture);
   SDL_DestroyRenderer(renderer); 
   SDL_DestroyWindow(window); 
 
-  printf("ending\n");
+  printf("SDL: ending\n");
 
   return 0;
 }