1 files changed, 239 insertions, 0 deletions
diff --git a/engine/pokemon/learn.asm b/engine/pokemon/learn.asm
new file mode 100644
index 00000000..2c66dcd5
--- /dev/null
+++ b/engine/pokemon/learn.asm
@@ -0,0 +1,239 @@
+LearnMove:
+	call LoadTilemapToTempTilemap
+	ld a, [wCurPartyMon]
+	ld hl, wPartyMonNicknames
+	call GetNick
+	ld hl, wStringBuffer1
+	ld de, wMonOrItemNameBuffer
+	ld bc, MON_NAME_LENGTH
+	call CopyBytes
+
+.loop
+	ld hl, wPartyMon1Moves
+	ld bc, PARTYMON_STRUCT_LENGTH
+	ld a, [wCurPartyMon]
+	call AddNTimes
+	ld d, h
+	ld e, l
+	ld b, NUM_MOVES
+; Get the first empty move slot.  This routine also serves to
+; determine whether the Pokemon learning the moves already has
+; all four slots occupied, in which case one would need to be
+; deleted.
+.next
+	ld a, [hl]
+	and a
+	jr z, .learn
+	inc hl
+	dec b
+	jr nz, .next
+; If we're here, we enter the routine for forgetting a move
+; to make room for the new move we're trying to learn.
+	push de
+	call ForgetMove
+	pop de
+	jp c, .cancel
+
+	push hl
+	push de
+	ld [wNamedObjectIndexBuffer], a
+
+	ld b, a
+	ld a, [wBattleMode]
+	and a
+	jr z, .not_disabled
+	ld a, [wDisabledMove]
+	cp b
+	jr nz, .not_disabled
+	xor a
+	ld [wDisabledMove], a
+	ld [wPlayerDisableCount], a
+.not_disabled
+
+	call GetMoveName
+	ld hl, Text_1_2_and_Poof ; 1, 2 and…
+	call PrintText
+	pop de
+	pop hl
+
+.learn
+	ld a, [wPutativeTMHMMove]
+	ld [hl], a
+	ld bc, MON_PP - MON_MOVES
+	add hl, bc
+
+	push hl
+	push de
+	dec a
+	ld hl, Moves + MOVE_PP
+	ld bc, MOVE_LENGTH
+	call AddNTimes
+	ld a, BANK(Moves)
+	call GetFarByte
+	pop de
+	pop hl
+
+	ld [hl], a
+
+	ld a, [wBattleMode]
+	and a
+	jp z, .learned
+
+	ld a, [wCurPartyMon]
+	ld b, a
+	ld a, [wCurBattleMon]
+	cp b
+	jp nz, .learned
+
+	ld a, [wPlayerSubStatus5]
+	bit SUBSTATUS_TRANSFORMED, a
+	jp nz, .learned
+
+	ld h, d
+	ld l, e
+	ld de, wBattleMonMoves
+	ld bc, NUM_MOVES
+	call CopyBytes
+	ld bc, wPartyMon1PP - (wPartyMon1Moves + NUM_MOVES)
+	add hl, bc
+	ld de, wBattleMonPP
+	ld bc, NUM_MOVES
+	call CopyBytes
+	jp .learned
+
+.cancel
+	ld hl, StopLearningMoveText
+	call PrintText
+	call YesNoBox
+	jp c, .loop
+
+	ld hl, DidNotLearnMoveText
+	call PrintText
+	ld b, 0
+	ret
+
+.learned
+	ld hl, LearnedMoveText
+	call PrintText
+	ld b, 1
+	ret
+
+ForgetMove:
+	push hl
+	ld hl, AskForgetMoveText
+	call PrintText
+	call YesNoBox
+	pop hl
+	ret c
+	ld bc, -NUM_MOVES
+	add hl, bc
+	push hl
+	ld de, wListMoves_MoveIndicesBuffer
+	ld bc, NUM_MOVES
+	call CopyBytes
+	pop hl
+.loop
+	push hl
+	ld hl, MoveAskForgetText
+	call PrintText
+	hlcoord 5, 2
+	ld b, NUM_MOVES * 2
+	ld c, MOVE_NAME_LENGTH
+	call Textbox
+	hlcoord 5 + 2, 2 + 2
+	ld a, SCREEN_WIDTH * 2
+	ld [wBuffer1], a
+	predef ListMoves
+	; w2DMenuData
+	ld a, $4
+	ld [w2DMenuCursorInitY], a
+	ld a, $6
+	ld [w2DMenuCursorInitX], a
+	ld a, [wNumMoves]
+	inc a
+	ld [w2DMenuNumRows], a
+	ld a, $1
+	ld [w2DMenuNumCols], a
+	ld [wMenuCursorY], a
+	ld [wMenuCursorX], a
+	ld a, $3
+	ld [wMenuJoypadFilter], a
+	ld a, $20
+	ld [w2DMenuFlags1], a
+	xor a
+	ld [w2DMenuFlags2], a
+	ld a, $20
+	ld [w2DMenuCursorOffsets], a
+	call StaticMenuJoypad
+	push af
+	call SafeLoadTempTilemapToTilemap
+	pop af
+	pop hl
+	bit 1, a
+	jr nz, .cancel
+	push hl
+	ld a, [wMenuCursorY]
+	dec a
+	ld c, a
+	ld b, 0
+	add hl, bc
+	ld a, [hl]
+	push af
+	push bc
+	call IsHMMove
+	pop bc
+	pop de
+	ld a, d
+	jr c, .hmmove
+	pop hl
+	add hl, bc
+	and a
+	ret
+
+.hmmove
+	ld hl, MoveCantForgetHMText
+	call PrintText
+	pop hl
+	jr .loop
+
+.cancel
+	scf
+	ret
+
+LearnedMoveText:
+	text_far _LearnedMoveText
+	text_end
+
+MoveAskForgetText:
+	text_far _MoveAskForgetText
+	text_end
+
+StopLearningMoveText:
+	text_far _StopLearningMoveText
+	text_end
+
+DidNotLearnMoveText:
+	text_far _DidNotLearnMoveText
+	text_end
+
+AskForgetMoveText:
+	text_far _AskForgetMoveText
+	text_end
+
+Text_1_2_and_Poof:
+	text_far Text_MoveForgetCount ; 1, 2 and…
+	text_asm
+	push de
+	ld de, SFX_SWITCH_POKEMON
+	call PlaySFX
+	pop de
+	ld hl, .MoveForgotText
+	ret
+
+.MoveForgotText:
+	text_far _MoveForgotText
+	text_end
+
+MoveCantForgetHMText:
+	text_far _MoveCantForgetHMText
+	text_end