Split battle/ into data/ and engine/ components

engine/battle/ai/redundant.asm

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+AI_Redundant: ; 2c41a
+; Check if move effect c will fail because it's already been used.
+; Return z if the move is a good choice.
+; Return nz if the move is a bad choice.
+	ld a, c
+	ld de, 3
+	ld hl, .Moves
+	call IsInArray
+	jp nc, .NotRedundant
+	inc hl
+	ld a, [hli]
+	ld h, [hl]
+	ld l, a
+	jp hl
+
+.Moves: ; 2c42c
+	dbw EFFECT_DREAM_EATER,  .DreamEater
+	dbw EFFECT_HEAL,         .Heal
+	dbw EFFECT_LIGHT_SCREEN, .LightScreen
+	dbw EFFECT_MIST,         .Mist
+	dbw EFFECT_FOCUS_ENERGY, .FocusEnergy
+	dbw EFFECT_CONFUSE,      .Confuse
+	dbw EFFECT_TRANSFORM,    .Transform
+	dbw EFFECT_REFLECT,      .Reflect
+	dbw EFFECT_SUBSTITUTE,   .Substitute
+	dbw EFFECT_LEECH_SEED,   .LeechSeed
+	dbw EFFECT_DISABLE,      .Disable
+	dbw EFFECT_ENCORE,       .Encore
+	dbw EFFECT_SNORE,        .Snore
+	dbw EFFECT_SLEEP_TALK,   .SleepTalk
+	dbw EFFECT_MEAN_LOOK,    .MeanLook
+	dbw EFFECT_NIGHTMARE,    .Nightmare
+	dbw EFFECT_SPIKES,       .Spikes
+	dbw EFFECT_FORESIGHT,    .Foresight
+	dbw EFFECT_PERISH_SONG,  .PerishSong
+	dbw EFFECT_SANDSTORM,    .Sandstorm
+	dbw EFFECT_ATTRACT,      .Attract
+	dbw EFFECT_SAFEGUARD,    .Safeguard
+	dbw EFFECT_RAIN_DANCE,   .RainDance
+	dbw EFFECT_SUNNY_DAY,    .SunnyDay
+	dbw EFFECT_TELEPORT,     .Teleport
+	dbw EFFECT_MORNING_SUN,  .MorningSun
+	dbw EFFECT_SYNTHESIS,    .Synthesis
+	dbw EFFECT_MOONLIGHT,    .Moonlight
+	dbw EFFECT_SWAGGER,      .Swagger
+	dbw EFFECT_FUTURE_SIGHT, .FutureSight
+	db -1
+
+.LightScreen: ; 2c487
+	ld a, [EnemyScreens]
+	bit SCREENS_LIGHT_SCREEN, a
+	ret
+
+.Mist: ; 2c48d
+	ld a, [EnemySubStatus4]
+	bit SUBSTATUS_MIST, a
+	ret
+
+.FocusEnergy: ; 2c493
+	ld a, [EnemySubStatus4]
+	bit SUBSTATUS_FOCUS_ENERGY, a
+	ret
+
+.Confuse: ; 2c499
+	ld a, [PlayerSubStatus3]
+	bit SUBSTATUS_CONFUSED, a
+	ret nz
+	ld a, [PlayerScreens]
+	bit SCREENS_SAFEGUARD, a
+	ret
+
+.Transform: ; 2c4a5
+	ld a, [EnemySubStatus5]
+	bit SUBSTATUS_TRANSFORMED, a
+	ret
+
+.Reflect: ; 2c4ab
+	ld a, [EnemyScreens]
+	bit SCREENS_REFLECT, a
+	ret
+
+.Substitute: ; 2c4b1
+	ld a, [EnemySubStatus4]
+	bit SUBSTATUS_SUBSTITUTE, a
+	ret
+
+.LeechSeed: ; 2c4b7
+	ld a, [PlayerSubStatus4]
+	bit SUBSTATUS_LEECH_SEED, a
+	ret
+
+.Disable: ; 2c4bd
+	ld a, [PlayerDisableCount]
+	and a
+	ret
+
+.Encore: ; 2c4c2
+	ld a, [PlayerSubStatus5]
+	bit SUBSTATUS_ENCORED, a
+	ret
+
+.Snore:
+.SleepTalk: ; 2c4c8
+	ld a, [EnemyMonStatus]
+	and SLP
+	jr z, .Redundant
+	jr .NotRedundant
+
+.MeanLook: ; 2c4d1
+	ld a, [EnemySubStatus5]
+	bit SUBSTATUS_CANT_RUN, a
+	ret
+
+.Nightmare: ; 2c4d7
+	ld a, [BattleMonStatus]
+	and a
+	jr z, .Redundant
+	ld a, [PlayerSubStatus1]
+	bit SUBSTATUS_NIGHTMARE, a
+	ret
+
+.Spikes: ; 2c4e3
+	ld a, [PlayerScreens]
+	bit SCREENS_SPIKES, a
+	ret
+
+.Foresight: ; 2c4e9
+	ld a, [PlayerSubStatus1]
+	bit SUBSTATUS_IDENTIFIED, a
+	ret
+
+.PerishSong: ; 2c4ef
+	ld a, [PlayerSubStatus1]
+	bit SUBSTATUS_PERISH, a
+	ret
+
+.Sandstorm: ; 2c4f5
+	ld a, [Weather]
+	cp WEATHER_SANDSTORM
+	jr z, .Redundant
+	jr .NotRedundant
+
+.Attract: ; 2c4fe
+	farcall CheckOppositeGender
+	jr c, .Redundant
+	ld a, [PlayerSubStatus1]
+	bit SUBSTATUS_IN_LOVE, a
+	ret
+
+.Safeguard: ; 2c50c
+	ld a, [EnemyScreens]
+	bit SCREENS_SAFEGUARD, a
+	ret
+
+.RainDance: ; 2c512
+	ld a, [Weather]
+	cp WEATHER_RAIN
+	jr z, .Redundant
+	jr .NotRedundant
+
+.SunnyDay: ; 2c51b
+	ld a, [Weather]
+	cp WEATHER_SUN
+	jr z, .Redundant
+	jr .NotRedundant
+
+.DreamEater: ; 2c524
+	ld a, [BattleMonStatus]
+	and SLP
+	jr z, .Redundant
+	jr .NotRedundant
+
+.Swagger: ; 2c52d
+	ld a, [PlayerSubStatus3]
+	bit SUBSTATUS_CONFUSED, a
+	ret
+
+.FutureSight: ; 2c533
+	ld a, [EnemyScreens]
+	bit 5, a
+	ret
+
+.Heal:
+.MorningSun:
+.Synthesis:
+.Moonlight: ; 2c539
+	farcall AICheckEnemyMaxHP
+	jr nc, .NotRedundant
+
+.Teleport:
+.Redundant: ; 2c541
+	ld a, 1
+	and a
+	ret
+
+.NotRedundant: ; 2c545
+	xor a
+	ret