Change map header flags to use a bitfield

src/bike.c

@@ -1053,7 +1053,7 @@ void Bike_HandleBumpySlopeJump(void)
 
 bool32 IsRunningDisallowed(u8 metatile)
 {
-    if (!(gMapHeader.flags & MAP_ALLOW_RUNNING) || IsRunningDisallowedByMetatile(metatile) == TRUE)
+    if (!gMapHeader.allowRunning || IsRunningDisallowedByMetatile(metatile) == TRUE)
         return TRUE;
     else
         return FALSE;

src/item_use.c

@@ -910,7 +910,7 @@ static void ItemUseOnFieldCB_EscapeRope(u8 taskId)
 
 bool8 CanUseDigOrEscapeRopeOnCurMap(void)
 {
-    if (gMapHeader.flags & MAP_ALLOW_ESCAPING)
+    if (gMapHeader.allowEscaping)
         return TRUE;
     else
         return FALSE;

src/overworld.c

@@ -962,7 +962,7 @@ static u16 GetCenterScreenMetatileBehavior(void)
 
 bool32 Overworld_IsBikingAllowed(void)
 {
-    if (!(gMapHeader.flags & MAP_ALLOW_CYCLING))
+    if (!gMapHeader.allowCycling)
         return FALSE;
     else
         return TRUE;
@@ -1687,7 +1687,7 @@ void CB2_ReturnToFieldFadeFromBlack(void)
 
 static void FieldCB_FadeTryShowMapPopup(void)
 {
-    if (SHOW_MAP_NAME_ENABLED && SecretBaseMapPopupEnabled() == TRUE)
+    if (gMapHeader.showMapName == TRUE && SecretBaseMapPopupEnabled() == TRUE)
         ShowMapNamePopup();
     FieldCB_WarpExitFadeFromBlack();
 }
@@ -1933,7 +1933,7 @@ static bool32 LoadMapInStepsLocal(u8 *state, bool32 a2)
         (*state)++;
         break;
     case 11:
-        if (SHOW_MAP_NAME_ENABLED && SecretBaseMapPopupEnabled() == TRUE)
+        if (gMapHeader.showMapName == TRUE && SecretBaseMapPopupEnabled() == TRUE)
             ShowMapNamePopup();
         (*state)++;
         break;

src/region_map.c

@@ -1007,7 +1007,7 @@ static void InitMapBasedOnPlayerLocation(void)
         break;
     case MAP_TYPE_UNDERGROUND:
     case MAP_TYPE_UNKNOWN:
-        if (gMapHeader.flags & MAP_ALLOW_ESCAPING)
+        if (gMapHeader.allowEscaping)
         {
             mapHeader = Overworld_GetMapHeaderByGroupAndId(gSaveBlock1Ptr->escapeWarp.mapGroup, gSaveBlock1Ptr->escapeWarp.mapNum);
             gRegionMap->mapSecId = mapHeader->regionMapSectionId;