pokered/engine/items/tmhm.asm

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; checks if the mon in [wWhichPokemon] already knows the move in [wMoveNum]
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CheckIfMoveIsKnown: ; 2fe18 (b:7e18)
ld a, [wWhichPokemon]
ld hl, wPartyMon1Moves
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ld bc, wPartyMon2 - wPartyMon1
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call AddNTimes
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ld a, [wMoveNum]
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ld b, a
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ld c, NUM_MOVES
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.loop
ld a, [hli]
cp b
jr z, .alreadyKnown ; found a match
dec c
jr nz, .loop
and a
ret
.alreadyKnown
ld hl, AlreadyKnowsText
call PrintText
scf
ret
AlreadyKnowsText: ; 2fe3b (b:7e3b)
TX_FAR _AlreadyKnowsText
db "@"