Add 'Press any key to begin...' message to the screen

* Text font is initialised with each text struct (to be improved)

src/pong.c

@@ -57,14 +57,22 @@ Pong_clear(Pong *p) {
 }
 
 int
-Pong_render(Pong *p) {
+Pong_render(Pong *p, int start) {
   Pong_clear(p);
-  const int error = Ball_render(p->ball, p->renderer)
+  int error = Ball_render(p->ball, p->renderer)
     + Racket_render(p->racketL, p->renderer)
     + Racket_render(p->racketR, p->renderer);
+
+  if (!start) {
+    Text *start_text = Text_init(50, 400, "Regular", 8);
+    const char *start_text_str = "Press any key to begin...";
+    error += Text_render(start_text, p->renderer, start_text_str, 400, 50);
+    Text_free(start_text);
+  }
   if (error > 0) {
     return error;
   }
+  
   SDL_RenderPresent(p->renderer);
   return 0;
 }
@@ -104,9 +112,8 @@ void
 Pong_run(Pong *p) {
   int start = false;
   int quit = false;
-    Pong_render(p);
+  Pong_render(p, start);
   while (!start) {
-      printf("Press any key to start...\r");
       fflush(stdout);
       while( SDL_PollEvent( &(p->e) ) != 0 )
 				{
@@ -130,7 +137,7 @@ Pong_run(Pong *p) {
 					Ball_move(p->ball, p);
 				Racket_move(p->racketL);
 				Racket_move(p->racketR);
-			        if (Pong_render(p) > 0) quit = true;
+			        if (Pong_render(p, start) > 0) quit = true;
 				Pong_status(p, quit);
   }
 }

src/pong.h

@@ -23,7 +23,7 @@ typedef struct Pong {
 Pong* Pong_init();
 void Pong_free(Pong *p);
 void Pong_clear(Pong *p);
-int Pong_render(Pong *p);
+int Pong_render(Pong *p, int start);
 void Ball_move(Ball *b, Pong *p);
 void Pong_run(Pong *p);
 void Pong_status(const Pong *p, int quit);

src/text.c

@@ -6,7 +6,6 @@ Text_init(int posX, int posY, const FcChar8 *TEXT_FONT_STYLE, int TEXT_FONT_PTSI
   *(int *)&t->POSX = posX;
   *(int *)&t->POSY = posY;
   
-  if (TEXT_FONT == NULL) {
     FcConfig *config = FcInitLoadConfigAndFonts();
     FcPattern *pat = FcPatternCreate();
     
@@ -16,7 +15,7 @@ Text_init(int posX, int posY, const FcChar8 *TEXT_FONT_STYLE, int TEXT_FONT_PTSI
     FcChar8 *style, *family;
     for (int i=0; fs && i < fs->nfont; ++i) {
       FcPattern* font = fs->fonts[i];
-      if (FcPatternGetString(font, FC_FILE, 0, &TEXT_FONT_FILE) == FcResultMatch
+      if (FcPatternGetString(font, FC_FILE, 0, &(t->TEXT_FONT_FILE)) == FcResultMatch
 	  && FcPatternGetString(font, FC_FAMILY, 0, &family) == FcResultMatch
 	  && FcPatternGetString(font, FC_STYLE, 0, &style) == FcResultMatch
 	  && strcmp(TEXT_FONT_FAMILY, family) == 0
@@ -24,35 +23,31 @@ Text_init(int posX, int posY, const FcChar8 *TEXT_FONT_STYLE, int TEXT_FONT_PTSI
 	break;
       }
     }
-    TEXT_FONT = TTF_OpenFont(TEXT_FONT_FILE, TEXT_FONT_PTSIZE);
+    t->TEXT_FONT = TTF_OpenFont(t->TEXT_FONT_FILE, TEXT_FONT_PTSIZE);
     FcFontSetDestroy(fs);
     FcObjectSetDestroy(os);
     FcPatternDestroy(pat);
     FcConfigDestroy(config);
-    if (TEXT_FONT == NULL) {
+    if (t->TEXT_FONT == NULL) {
-      printf("TTF_OpenFont fail with path '%s'. TTF_Error: %s\n", TEXT_FONT_FILE, TTF_GetError());
+      printf("TTF_OpenFont fail with path '%s'. TTF_Error: %s\n", t->TEXT_FONT_FILE, TTF_GetError());
       free(t);
       return NULL;
     }
-  }
 
   return t;
 }
 
 void
 Text_free(Text *t) {
-  if (TEXT_FONT != NULL) {
+  TTF_CloseFont(t->TEXT_FONT);
-    TTF_CloseFont(TEXT_FONT);
-    TEXT_FONT = NULL;
-  }
   free(t);
 }
 
 int
-Text_render(const Text* text, SDL_Renderer *renderer, const char *str, int width, int height) {
+Text_render(const Text* t, SDL_Renderer *renderer, const char *str, int width, int height) {
-  SDL_Rect textRect = { text->POSX , text->POSY, width, height };
+  SDL_Rect textRect = { t->POSX , t->POSY, width, height };
 
-  SDL_Surface *textSurface = TTF_RenderText_Solid(TEXT_FONT, str, TEXT_FONT_COLOR);
+  SDL_Surface *textSurface = TTF_RenderText_Solid(t->TEXT_FONT, str, TEXT_FONT_COLOR);
   if (textSurface == NULL) {
     printf("Text rendering failed. TTF_Error: %s\n", TTF_GetError());
     return 1;

src/text.h

@@ -6,13 +6,13 @@
 #include <fontconfig/fontconfig.h>
 
 static const FcChar8 *TEXT_FONT_FAMILY = "Liberation Mono";
-static TTF_Font *TEXT_FONT = NULL;
-static FcChar8 *TEXT_FONT_FILE = NULL;
 static const SDL_Color TEXT_FONT_COLOR = { 255, 255, 255 };
 
 typedef struct Text {
   const int POSX;
   const int POSY;
+  TTF_Font *TEXT_FONT;
+  FcChar8 *TEXT_FONT_FILE;
 } Text;
 
 Text* Text_init(int posX, int posY, const FcChar8 *font_style, int font_ptsize);