Fix names and constant usage for union room classes

include/constants/pokemon.h

@@ -247,9 +247,6 @@
 #define EVO_MODE_ITEM_USE   2
 #define EVO_MODE_ITEM_CHECK 3 // If an Everstone is being held, still want to show that the stone *could* be used on that Pokémon to evolve
 
-#define NUM_MALE_LINK_FACILITY_CLASSES   8
-#define NUM_FEMALE_LINK_FACILITY_CLASSES 8
-
 #define MON_PIC_WIDTH 64
 #define MON_PIC_HEIGHT 64
 #define MON_PIC_SIZE (MON_PIC_WIDTH * MON_PIC_HEIGHT / 2)

include/constants/union_room.h

@@ -13,6 +13,10 @@
 
 #define UNION_ROOM_MAX_LEVEL 30
 
+// The number of possible trainer classes for a trainer of a given gender in the Union Room.
+// This value is necessarily a power of 2 because of the way it's treated in GetUnionRoomTrainerPic / GetUnionRoomTrainerClass
+#define NUM_UNION_ROOM_CLASSES (1 << 3) // 8
+
 #define ACTIVITY_NONE               0
 #define ACTIVITY_BATTLE_SINGLE      1
 #define ACTIVITY_BATTLE_DOUBLE      2

include/pokemon.h

@@ -382,7 +382,7 @@ extern const u8 gPPUpGetMask[];
 extern const u8 gPPUpClearMask[];
 extern const u8 gPPUpAddValues[];
 extern const u8 gStatStageRatios[MAX_STAT_STAGE + 1][2];
-extern const u16 gLinkPlayerFacilityClasses[];
+extern const u16 gUnionRoomFacilityClasses[];
 extern const struct SpriteTemplate gBattlerSpriteTemplates[];
 extern const s8 gNatureStatTable[][5];
 

include/trainer_card.h

@@ -54,7 +54,7 @@ struct TrainerCard
     /*0x4C*/ bool8 shouldDrawStickers; // FRLG only
     /*0x4D*/ u8 unused;
     /*0x4E*/ u8 monIconTint; // FRLG only
-    /*0x4F*/ u8 facilityClass;
+    /*0x4F*/ u8 unionRoomClass;
     /*0x50*/ u8 stickers[TRAINER_CARD_STICKER_TYPES]; // FRLG only
     /*0x54*/ u16 monSpecies[PARTY_SIZE]; // FRLG only
              // Note: Link players use linkHasAllFrontierSymbols, not the field below,