puzzles: fix building

- disables help on c200v2
- renames conflicting function

Change-Id: I0c4ff1bb40e7e3cafd0170090f22b80bf0656741

apps/plugins/puzzles/SOURCES

@@ -1,8 +1,11 @@
 rockbox.c
 rbwrappers.c
 rbmalloc.c
+
+#ifndef SANSA_C200V2
 help.c
 helpcontent.c
+#endif
 
 src/combi.c
 src/divvy.c

apps/plugins/puzzles/rockbox.c

@@ -1099,6 +1099,15 @@ static void quick_help(void)
     }
 }
 
+#ifdef SANSA_C200V2
+/* no full help available due to memory constraints, so we provide a
+ * dummy function here */
+void full_help(const char *str)
+{
+    (void) str;
+}
+#endif
+
 static void init_default_settings(void)
 {
     settings.slowmo_factor = 1;
@@ -1214,7 +1223,11 @@ static int pausemenu_cb(int action, const struct menu_item_ex *this_item)
                 return ACTION_EXIT_MENUITEM;
             break;
         case 7:
+#ifdef SANSA_C200V2
+            return ACTION_EXIT_MENUITEM;
+#else
             break;
+#endif
         case 8:
 #ifdef COMBINED
             /* audio buf is used, so no playback */
@@ -1806,7 +1819,11 @@ static int mainmenu_cb(int action, const struct menu_item_ex *this_item)
                 return ACTION_EXIT_MENUITEM;
             break;
         case 3:
+#ifdef SANSA_C200V2
+            return ACTION_EXIT_MENUITEM;
+#else
             break;
+#endif
         case 4:
 #ifdef COMBINED
             /* audio buf is used, so no playback */

apps/plugins/puzzles/src/misc.c

@@ -201,7 +201,7 @@ void game_mkhighlight(frontend *fe, float *ret,
     game_mkhighlight_specific(fe, ret, background, highlight, lowlight);
 }
 
-static void memswap(void *av, void *bv, int size)
+static void swap_regions(void *av, void *bv, int size)
 {
     char tmpbuf[512];
     char *a = av, *b = bv;
@@ -225,7 +225,7 @@ void shuffle(void *array, int nelts, int eltsize, random_state *rs)
     for (i = nelts; i-- > 1 ;) {
         int j = random_upto(rs, i+1);
         if (j != i)
-            memswap(carray + eltsize * i, carray + eltsize * j, eltsize);
+            swap_regions(carray + eltsize * i, carray + eltsize * j, eltsize);
     }
 }