#define B_UPDATED_MOVE_DATA GEN_8 // Updates move data in gBattleMoves, including Power, Accuracy, PP, stat changes, targets, chances of secondary effects, etc.
#define B_PHYSICAL_SPECIAL_SPLIT GEN_7 // In Gen3, the move's type determines if it will do physical or special damage. The split icon in the summary will reflect this.
#define B_FELL_STINGER_STAT_RAISE GEN_7 // In Gen7+, it raises Atk by 3 stages instead of 2 if it causes the target to faint.
#define B_KINGS_SHIELD_LOWER_ATK GEN_7 // In Gen7+, it lowers Atk by 1 stage instead of 2 of oponents that hit it.
#define B_PAYBACK_SWITCH_BOOST GEN_7 // In Gen5+, if the opponent switches out, Payback's damage will no longer be doubled.
#define B_BINDING_TURNS GEN_7 // In Gen5+, binding moves last for 4-5 turns instead of 2-5 turns. (With Grip Claw, 7 and 5 turns respectively.)
#define B_UPROAR_TURNS GEN_7 // In Gen5+, Uproar lasts for 3 turns instead of 2-5 turns.
#define B_DISABLE_TURNS GEN_7 // Disable's turns. See Cmd_disablelastusedattack.
#define B_INCINERATE_GEMS GEN_7 // In Gen6+, Incinerate can destroy Gems.
#define B_MINIMIZE_DMG_ACC GEN_7 // In Gen6+, moves that causes double damage to minimized Pokémon will also skip accuracy checks.
#define B_PP_REDUCED_BY_SPITE GEN_7 // In Gen4+, Spite reduces the foe's last move's PP by 4, instead of 2 to 5.
#define B_CAN_SPITE_FAIL GEN_7 // In Gen4+, Spite can no longer fail if the foe's last move only has 1 remaining PP.
#define B_CRASH_IF_TARGET_IMMUNE GEN_7 // In Gen4+, The user of Jump Kick or High Jump Kick will "keep going and crash" if it attacks a target that is immune to the move.
#define B_MEMENTO_FAIL GEN_7 // In Gen4+, Memento fails if there is no target or if the target is protected or behind substitute. But not if Atk/Sp. Atk are at -6.
#define B_ABILITY_WEATHER GEN_7 // In Gen6+, ability-induced weather lasts 5 turns. Before, it lasted until the battle ended or until it was changed by a move or a different weather-affecting ability.
#define B_STANCE_CHANGE_FAIL GEN_7 // In Gen7+, Stance Change fails if the Pokémon is unable to use a move because of confusion, paralysis, etc. In Gen6, it doesn't.
#define B_MOODY_ACC_EVASION GEN_8 // In Gen8, Moody CANNOT raise Accuracy and Evasion anymore.
#define B_FLASH_FIRE_FROZEN GEN_7 // In Gen5+, Flash Fire can trigger even when frozen, when it couldn't before.
#define B_SYNCHRONIZE_NATURE GEN_8 // In Gen8, if the Pokémon with Synchronize is leading the party, it's 100% guaranteed that wild Pokémon will have the same ability, as opposed to 50% previously.
#define B_HP_BERRIES GEN_7 // In Gen4+, berries which restore hp activate immediately after HP drops to half. In Gen3, the effect occurs at the end of the turn.
#define B_BERRIES_INSTANT GEN_7 // In Gen4+, most berries activate on battle start/switch-in if applicable. In Gen3, they only activate either at the move end or turn end.
#define B_FLAG_INVERSE_BATTLE 0 // If this flag is set, the battle's type effectiveness are inversed. For example, fire is super effective against water.
#define B_FLAG_FORCE_DOUBLE_WILD 0 // If this flag is set, all land and surfing wild battles will be double battles.
#define VAR_TERRAIN 0 // If this var has a value, assigning a STATUS_FIELD_xx_TERRAIN to it before battle causes the battle to start with that terrain active
#define B_FAST_INTRO TRUE // If set to TRUE, battle intro texts print at the same time as animation of a Pokémon, as opposing to waiting for the animation to end.
#define B_TRAINERS_KNOCK_OFF_ITEMS TRUE // If TRUE, trainers can steal/swap your items (non-berries are restored after battle). In vanilla games trainers cannot steal items.