added cursor key navigation to title info screens

[rocksndiamonds.git] / src / screens.c

diff --git a/src/screens.c b/src/screens.c
index 3c5f6b9a1572b77b32abd3e73303068617ea1779..8e18035e42c84586322715d96d60c9851794cbf7 100644 (file)
--- a/src/screens.c
+++ b/src/screens.c
@@ -277,10 +277,10 @@ static void DrawInfoScreen_NotAvailable(char *, char *);
 static void DrawInfoScreen_HelpAnim(int, int, boolean);
 static void DrawInfoScreen_HelpText(int, int, int, int);
 static void HandleInfoScreen_Main(int, int, int, int, int);
-static void HandleInfoScreen_TitleScreen(int);
-static void HandleInfoScreen_Elements(int);
-static void HandleInfoScreen_Music(int);
-static void HandleInfoScreen_Credits(int);
+static void HandleInfoScreen_TitleScreen(int, int, int);
+static void HandleInfoScreen_Elements(int, int, int);
+static void HandleInfoScreen_Music(int, int, int);
+static void HandleInfoScreen_Credits(int, int, int);
 static void HandleInfoScreen_Program(int);
 static void HandleInfoScreen_Version(int);
 
@@ -1918,7 +1918,7 @@ void HandleTitleScreen(int mx, int my, int dx, int dy, int button)
   {
     return_to_main_menu = TRUE;
   }
-  else if (button == MB_MENU_CHOICE)
+  else if (button == MB_MENU_CHOICE || dx)
   {
     if (game_status_last_screen == GAME_MODE_INFO && num_title_screens == 0)
     {
@@ -1931,9 +1931,10 @@ void HandleTitleScreen(int mx, int my, int dx, int dy, int button)
       return;
     }
 
-    title_screen_nr++;
+    title_screen_nr +=
+      (game_status_last_screen == GAME_MODE_INFO && dx < 0 ? -1 : +1);
 
-    if (title_screen_nr < num_title_screens)
+    if (title_screen_nr >= 0 && title_screen_nr < num_title_screens)
     {
       tci = &title_controls[title_screen_nr];
 
@@ -3090,9 +3091,9 @@ static void DrawInfoScreen_TitleScreen(void)
   DrawTitleScreen();
 }
 
-void HandleInfoScreen_TitleScreen(int button)
+void HandleInfoScreen_TitleScreen(int dx, int dy, int button)
 {
-  HandleTitleScreen(0, 0, 0, 0, button);
+  HandleTitleScreen(0, 0, dx, dy, button);
 }
 
 static void DrawInfoScreen_Elements(void)
@@ -3104,12 +3105,12 @@ static void DrawInfoScreen_Elements(void)
   LoadHelpAnimInfo();
   LoadHelpTextInfo();
 
-  HandleInfoScreen_Elements(MB_MENU_INITIALIZE);
+  HandleInfoScreen_Elements(0, 0, MB_MENU_INITIALIZE);
 
   FadeIn(REDRAW_FIELD);
 }
 
-void HandleInfoScreen_Elements(int button)
+void HandleInfoScreen_Elements(int dx, int dy, int button)
 {
   static unsigned int info_delay = 0;
   static int num_anims;
@@ -3148,16 +3149,16 @@ void HandleInfoScreen_Elements(int button)
 
     return;
   }
-  else if (button == MB_MENU_CHOICE || button == MB_MENU_INITIALIZE)
+  else if (button == MB_MENU_CHOICE || button == MB_MENU_INITIALIZE || dx)
   {
     if (button != MB_MENU_INITIALIZE)
     {
       PlaySound(SND_MENU_ITEM_SELECTING);
 
-      page++;
+      page += (dx < 0 ? -1 : +1);
     }
 
-    if (page >= num_pages)
+    if (page < 0 || page >= num_pages)
     {
       FadeMenuSoundsAndMusic();
 
@@ -3167,7 +3168,7 @@ void HandleInfoScreen_Elements(int button)
       return;
     }
 
-    if (page > 0)
+    if (button != MB_MENU_INITIALIZE)
       FadeSetNextScreen();
 
     if (button != MB_MENU_INITIALIZE)
@@ -3199,12 +3200,12 @@ static void DrawInfoScreen_Music(void)
 
   LoadMusicInfo();
 
-  HandleInfoScreen_Music(MB_MENU_INITIALIZE);
+  HandleInfoScreen_Music(0, 0, MB_MENU_INITIALIZE);
 
   FadeIn(REDRAW_FIELD);
 }
 
-void HandleInfoScreen_Music(int button)
+void HandleInfoScreen_Music(int dx, int dy, int button)
 {
   static struct MusicFileInfo *list = NULL;
   int font_title = MENU_INFO_FONT_TITLE;
@@ -3250,14 +3251,14 @@ void HandleInfoScreen_Music(int button)
 
     return;
   }
-  else if (button == MB_MENU_CHOICE || button == MB_MENU_INITIALIZE)
+  else if (button == MB_MENU_CHOICE || button == MB_MENU_INITIALIZE || dx)
   {
     if (button != MB_MENU_INITIALIZE)
     {
       PlaySound(SND_MENU_ITEM_SELECTING);
 
       if (list != NULL)
-       list = list->next;
+       list = (dx < 0 ? list->prev : list->next);
     }
 
     if (list == NULL)
@@ -3607,12 +3608,12 @@ static void DrawInfoScreen_Credits(void)
 
   FadeOut(REDRAW_FIELD);
 
-  HandleInfoScreen_Credits(MB_MENU_INITIALIZE);
+  HandleInfoScreen_Credits(0, 0, MB_MENU_INITIALIZE);
 
   FadeIn(REDRAW_FIELD);
 }
 
-void HandleInfoScreen_Credits(int button)
+void HandleInfoScreen_Credits(int dx, int dy, int button)
 {
   static int screen_nr = 0;
   int num_screens = 9;
@@ -3632,13 +3633,13 @@ void HandleInfoScreen_Credits(int button)
 
     return;
   }
-  else if (button == MB_MENU_CHOICE)
+  else if (button == MB_MENU_CHOICE || dx)
   {
     PlaySound(SND_MENU_ITEM_SELECTING);
 
-    screen_nr++;
+    screen_nr += (dx < 0 ? -1 : +1);
 
-    if (screen_nr >= num_screens)
+    if (screen_nr < 0 || screen_nr >= num_screens)
     {
       FadeMenuSoundsAndMusic();
 
@@ -3648,8 +3649,7 @@ void HandleInfoScreen_Credits(int button)
       return;
     }
 
-    if (screen_nr > 0)
-      FadeSetNextScreen();
+    FadeSetNextScreen();
 
     FadeOut(REDRAW_FIELD);
 
@@ -4061,13 +4061,13 @@ static void DrawInfoScreen(void)
 void HandleInfoScreen(int mx, int my, int dx, int dy, int button)
 {
   if (info_mode == INFO_MODE_TITLE)
-    HandleInfoScreen_TitleScreen(button);
+    HandleInfoScreen_TitleScreen(dx, dy, button);
   else if (info_mode == INFO_MODE_ELEMENTS)
-    HandleInfoScreen_Elements(button);
+    HandleInfoScreen_Elements(dx, dy, button);
   else if (info_mode == INFO_MODE_MUSIC)
-    HandleInfoScreen_Music(button);
+    HandleInfoScreen_Music(dx, dy, button);
   else if (info_mode == INFO_MODE_CREDITS)
-    HandleInfoScreen_Credits(button);
+    HandleInfoScreen_Credits(dx, dy, button);
   else if (info_mode == INFO_MODE_PROGRAM)
     HandleInfoScreen_Program(button);
   else if (info_mode == INFO_MODE_VERSION)