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109 lines
1.2 KiB
NASM
109 lines
1.2 KiB
NASM
HiddenPowerDamage:
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; Override Hidden Power's type and power based on the user's DVs.
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ld hl, wBattleMonDVs
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ldh a, [hBattleTurn]
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and a
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jr z, .got_dvs
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ld hl, wEnemyMonDVs
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.got_dvs
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; Power:
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; Take the top bit from each stat
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; Attack
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ld a, [hl]
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swap a
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and %1000
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; Defense
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ld b, a
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ld a, [hli]
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and %1000
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srl a
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or b
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; Speed
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ld b, a
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ld a, [hl]
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swap a
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and %1000
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srl a
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srl a
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or b
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; Special
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ld b, a
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ld a, [hl]
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and %1000
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srl a
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srl a
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srl a
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or b
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; Multiply by 5
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ld b, a
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add a
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add a
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add b
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; Add Special & 3
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ld b, a
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ld a, [hld]
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and %0011
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add b
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; Divide by 2 and add 30 + 1
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srl a
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add 30
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inc a
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ld d, a
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; Type:
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; Def & 3
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ld a, [hl]
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and %0011
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ld b, a
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; + (Atk & 3) << 2
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ld a, [hl]
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and %0011 << 4
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swap a
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add a
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add a
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or b
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; Skip Normal
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inc a
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; Skip Bird
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cp BIRD
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jr c, .done
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inc a
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; Skip unused types
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cp UNUSED_TYPES
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jr c, .done
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add UNUSED_TYPES_END - UNUSED_TYPES
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.done
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; Overwrite the current move type.
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push af
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ld a, BATTLE_VARS_MOVE_TYPE
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call GetBattleVarAddr
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pop af
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ld [hl], a
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; Get the rest of the damage formula variables
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; based on the new type, but keep base power.
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ld a, d
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push af
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farcall BattleCommand_DamageStats ; damagestats
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pop af
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ld d, a
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ret
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