@ Initialize the Battle Arena challenge
    .macro arena_init
    setvar VAR_0x8004, BATTLE_ARENA_FUNC_INIT
    special CallBattleArenaFunction
    .endm

    @ Unused. Get the value of some ARENA_DATA_*. See GetArenaData for the data types that can be retrieved
    .macro arena_get data:req
    setvar VAR_0x8004, BATTLE_ARENA_FUNC_GET_DATA
    setvar VAR_0x8005, \data
    special CallBattleArenaFunction
    .endm

    @ Set some ARENA_DATA_* to val. See SetArenaData for the data types that can be set
    .macro arena_set data:req, val:req
    setvar VAR_0x8004, BATTLE_ARENA_FUNC_SET_DATA
    setvar VAR_0x8005, \data
    setvar VAR_0x8006, \val
    special CallBattleArenaFunction
    .endm

    @ Save the game and set the challenge status
    .macro arena_save challengeStatus:req
    setvar VAR_0x8004, BATTLE_ARENA_FUNC_SAVE
    setvar VAR_0x8005, \challengeStatus
    special CallBattleArenaFunction
    .endm

    @ Unused. Set the reward item to give from one of two lists of possible awards, depending on streak.
    .macro arena_setreward
    setvar VAR_0x8004, BATTLE_ARENA_FUNC_SET_REWARD
    special CallBattleArenaFunction
    .endm

    @ Unused. Give the set award item to the player. TRUE if room in Bag for award, FALSE otherwise
    .macro arena_givereward
    setvar VAR_0x8004, BATTLE_ARENA_FUNC_GIVE_REWARD
    special CallBattleArenaFunction
    .endm

    @ Buffer the opponents name to STR_VAR_1
    .macro arena_gettrainername
    setvar VAR_0x8004, BATTLE_ARENA_FUNC_GET_TRAINER_NAME
    special CallBattleArenaFunction
    .endm