Added onscreen errors

src/gameloop.c

@@ -30,7 +30,6 @@ int
          * 6: World editing (renaming etc)
          * 7: Join game
          * 8: Options
-         * 9: Error
          */
         gameState = 0,
 
@@ -52,6 +51,7 @@ int
 
 float fov = 90;
 
+char *errorMessage = NULL;
 char usernameBuffer[8] = "guest";
 InputBuffer username = {
         .buffer = usernameBuffer,
@@ -64,6 +64,8 @@ static SDL_Rect backgroundRect;
 Player player = { 0 };
 Coords playerMovement = { 0.0, 0.0, 0.0 };
 
+int screenshot ();
+
 /* gameLoop_resetGame
  * Resets elements of the game such as time and the player position. This will
  * also reset the world.
@@ -132,6 +134,15 @@ int gameLoop (
   static IntCoords blockRayPosition  = { 0 };
   
   static Chunk *chunk;
+
+  // If there is an error, show it and stop
+  if (errorMessage) {
+    if (state_err(renderer, inputs, errorMessage)) {
+      errorMessage = NULL;
+      // TODO: add capability to recover from error:
+      return 1;
+    }
+  }
   
   switch (gameState) {
     // A main menu
@@ -784,3 +795,7 @@ int screenshot (SDL_Renderer *renderer) {
                 return 1;
         }
 }
+
+void gameLoop_error (char *message) {
+        errorMessage = message;
+}

src/gameloop.h

@@ -8,4 +8,4 @@
 int  gameLoop                 (Inputs *inputs, SDL_Renderer *renderer);
 void gameLoop_processMovement (Inputs *);
 void gameLoop_resetGame       ();
-int screenshot ();
+void gameLoop_error           (char *);

src/main.c

@@ -64,11 +64,7 @@ int main (/*int argc, char *argv[]*/) {
         //--- initializing modules ---//
         int dataInitFailed = data_init();
         if (dataInitFailed) {
-                printf (
-                        "cannot initialize data module, code %i\n",
-                        dataInitFailed);
-                // TODO: display onscreen error before doing this
-                return 1;
+                gameLoop_error("cannot initialize data module");
         }
 
         //---- generating assets  ----//