GUI : fonction d'affichage de message finie (ajout du rendu de texte)

utilisation de la mémoire vidéo

Makefile

@@ -16,7 +16,7 @@ api.h : dameschinoises.h dameschinoises.patch
 	patch -o api.h dameschinoises.h dameschinoises.patch
 
 main : main.o gui
-	gcc main.o gui.o -o main -pedantic $(LDFLAGS) -lSDL -lSDL_image -lSDL_gfx -lm $(WARNINGS)
+	gcc main.o gui.o -o main -pedantic $(LDFLAGS) -lSDL -lSDL_image -lSDL_gfx -lSDL_ttf -lm $(WARNINGS)
 
 main.o : main.c api.h
 	gcc -c main.c $(CFLAGS) $(WARNINGS)
@@ -33,7 +33,7 @@ gui : gui.c api.h
 	gcc -c gui.c $(CFLAGS) $(WARNINGS)
 
 guidemo : guidemo.c gui
-	gcc guidemo.c gui.o -o guidemo $(CFLAGS) $(LDFLAGS) -lSDL -lSDL_image -lSDL_gfx -lm $(WARNINGS)
+	gcc guidemo.c gui.o -o guidemo $(CFLAGS) $(LDFLAGS) -lSDL -lSDL_image -lSDL_gfx -lSDL_ttf -lm $(WARNINGS)
 
 clean :
 	rm -f *.o

gui.c

@@ -25,9 +25,11 @@ SDL_Surface *IMG_LoadBoost(const char *path) {
 struct gui_resource_t display_start() {
  struct gui_resource_t res;
 
+ null_die(SDL_Init(SDL_INIT_VIDEO) != -1, "SDL initialization failed");
+ null_die(TTF_Init() != -1, "TTF initialization failed");
+
  /* création fenêtre */
- SDL_Init(SDL_INIT_VIDEO);
- res.screen = SDL_SetVideoMode(SCREEN_X, SCREEN_Y, 32, SDL_SWSURFACE);
+ res.screen = SDL_SetVideoMode(SCREEN_X, SCREEN_Y, 32, SDL_HWSURFACE);
  SDL_WM_SetCaption("跳棋", NULL);
 
  /* chargement images */
@@ -46,6 +48,10 @@ struct gui_resource_t display_start() {
  null_die(res.pawn_img[5] = IMG_LoadBoost("img/pawn5-green.png"), "cannot load green pawn img");
  null_die(res.pawn_img[6] = IMG_LoadBoost("img/pawn6-purple.png"), "cannot load purple pawn img");
 
+ /* chargement police de caractères */
+ null_die(res.font_big = TTF_OpenFont("img/cmunbmr.otf", 34), "cannot load font");
+ null_die(res.font_small = TTF_OpenFont("img/cmunbmr.otf", 18), "cannot load font");
+
  return res;
 }
 
@@ -217,7 +223,7 @@ int display_animove_pawn(struct gui_resource_t res, struct game_state_t gamestat
    SDL_Delay(PANIFRAMETIME - (time2-time1));
   #ifdef rant
   else
-   fprintf(stderr,"(rant) animation: the machine is slow, frame took %dms\n", time2-time1);
+   fprintf(stderr,"(rant) pawn animation: the machine is slow, frame took %dms\n", time2-time1);
   #endif
  }
  SDL_FreeSurface(buffer);
@@ -233,7 +239,11 @@ int display_animsg(struct gui_resource_t res, struct game_state_t gamestate, enu
 
  /* mise en buffer de l'image du message */
  SDL_Surface *msgbuffer = SDL_ConvertSurface(res.msgboard_img, res.msgboard_img->format, res.msgboard_img->flags);
- /* sdl ttf msg → msgbuffer TODO */
+ SDL_Color text_color = {20, 18, 17}; /* RGB */
+ SDL_Surface *text_img = TTF_RenderUTF8_Blended(res.font_big, msg, text_color);
+ SDL_Rect textclip = { msgbuffer->w/2 - text_img->w/2, msgbuffer->h/2 - text_img->h/2 };
+ SDL_BlitSurface(text_img, NULL, msgbuffer, &textclip); /* dessin du texte */
+ SDL_FreeSurface(text_img);
 
  uint32_t time1, time2; /* mesure du temps de rendu de frame */
  SDL_Event event;
@@ -245,13 +255,12 @@ int display_animsg(struct gui_resource_t res, struct game_state_t gamestate, enu
    if(event.type == SDL_QUIT)
     frame = duration/MANIFRAMETIME + 2;
 
-  /* interpolation non-linéaire de progression 0→1 */
-  double progress = sin( ((double)frame)/((double)(duration/MANIFRAMETIME))*M_PI/2 );
-
   SDL_BlitSurface(bgbuffer, NULL, res.screen, NULL); /* dessin du fond */
-  SDL_Surface *zoomed_msg_img = rotozoomSurface(msgbuffer, (1-progress)*30/M_PI, 2-progress, frame == duration/MANIFRAMETIME);
-  SDL_SetAlpha(zoomed_msg_img, SDL_SRCALPHA|SDL_RLEACCEL, (char)round(progress*256));
-  SDL_Rect clip = { SCREEN_X/2 - zoomed_msg_img->w/2, SCREEN_Y/2 - zoomed_msg_img->h/2};
+
+  double progress = ((double)frame)/((double)(duration/MANIFRAMETIME)); /* 0→1 */
+  SDL_Surface *zoomed_msg_img = rotozoomSurface(msgbuffer, (1-progress)*10/M_PI, 1.5-progress, 1/*antialias*/);
+  SDL_SetAlpha(zoomed_msg_img, SDL_SRCALPHA|SDL_RLEACCEL, (int)round(sin(progress*M_PI)*255));
+  SDL_Rect clip = { SCREEN_X/2 - zoomed_msg_img->w/2, SCREEN_Y/2 - zoomed_msg_img->h/2 };
   SDL_BlitSurface(zoomed_msg_img, NULL, res.screen, &clip); /* dessin du message */
   SDL_FreeSurface(zoomed_msg_img);
 
@@ -263,7 +272,7 @@ int display_animsg(struct gui_resource_t res, struct game_state_t gamestate, enu
    SDL_Delay(MANIFRAMETIME - (time2-time1));
   #ifdef rant
   else
-   fprintf(stderr,"(rant) animation: the machine is slow, frame took %dms\n", time2-time1);
+   fprintf(stderr,"(rant) text animation: the machine is slow, frame took %dms\n", time2-time1);
   #endif
  }
  SDL_FreeSurface(bgbuffer);
@@ -285,4 +294,5 @@ void display_close(struct gui_resource_t res) {
 
  /* Fermeture fenêtre */
  SDL_Quit();
+ TTF_Quit();
 }

gui.h

@@ -1,5 +1,8 @@
+#include <SDL/SDL_ttf.h>
+
 struct gui_resource_t {
  SDL_Surface *screen, *title_img, *bgnd_img, *board_img, *msgboard_img, *pawn_img[7];
+ TTF_Font *font_big, *font_small;
 };
 
 struct gui_resource_t display_start();

guidemo.c

@@ -84,7 +84,7 @@ int main(int argc, char* argv[]) {
    break;
   }
 
-  if( display_animsg(gui_res, gamestate, player2, "lol!\n元気?", 2000/*ms*/) ) {
+  if( display_animsg(gui_res, gamestate, player2, "Next player’s turn!", 1200/*ms*/) ) {
    quit = 1;
    break;
   }