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-rw-r--r--engine/minigame/surfing_pikachu.asm2863
1 files changed, 2863 insertions, 0 deletions
diff --git a/engine/minigame/surfing_pikachu.asm b/engine/minigame/surfing_pikachu.asm
new file mode 100644
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+++ b/engine/minigame/surfing_pikachu.asm
@@ -0,0 +1,2863 @@
+SurfingPikachuMinigame::
+ call SurfingPikachuMinigame_BlankPals
+ call DelayFrame
+ call DelayFrame
+ call DelayFrame
+ ldh a, [hTileAnimations]
+ push af
+ xor a
+ ldh [hTileAnimations], a
+ ld a, [wUpdateSpritesEnabled]
+ push af
+ ld a, $ff
+ ld [wUpdateSpritesEnabled], a
+ ldh a, [rIE]
+ push af
+ xor a
+ ldh [rIF], a
+ ld a, $f
+ ldh [rIE], a
+ ld a, $8
+ ldh [rSTAT], a
+ ldh a, [hAutoBGTransferDest + 1]
+ push af
+ ld a, $98
+ ldh [hAutoBGTransferDest + 1], a
+ call SurfingPikachuMinigameIntro
+ call SurfingPikachuLoop
+ xor a
+ ldh [rBGP], a
+ ldh [rOBP0], a
+ ldh [rOBP1], a
+ call UpdateGBCPal_BGP
+ call UpdateGBCPal_OBP0
+ call UpdateGBCPal_OBP1
+ call ClearObjectAnimationBuffers
+ call ClearSprites
+ xor a
+ ldh [hLCDCPointer], a
+ ldh [hSCX], a
+ ldh [hSCY], a
+ ld a, $90
+ ldh [hWY], a
+ call DelayFrame
+ pop af
+ ldh [hAutoBGTransferDest + 1], a
+ xor a
+ ldh [rIF], a
+ pop af
+ ldh [rIE], a
+ xor a
+ ldh [rSTAT], a
+ call RunDefaultPaletteCommand
+ call ReloadMapAfterSurfingMinigame
+ call PlayDefaultMusic
+ call GBPalNormal
+ pop af
+ ld [wUpdateSpritesEnabled], a
+ pop af
+ ldh [hTileAnimations], a
+ ret
+
+SurfingPikachuLoop:
+ call SurfingPikachuMinigame_LoadGFXAndLayout
+ call DelayFrame
+ ld b, $e
+ call RunPaletteCommand
+.loop
+ ld a, [wSurfingMinigameRoutineNumber]
+ bit 7, a
+ ret nz
+ call SurfingPikachu_GetJoypad_3FrameBuffer
+ call SurfingPikachu_CheckPressedSelect
+ ret nz
+ call RunSurfingMinigameRoutine
+ ld a, $3c
+ ld [wCurrentAnimatedObjectOAMBufferOffset], a
+ call RunObjectAnimations
+ call SurfingMinigame_MoveClouds
+ call .DelayFrame
+ call SurfingMinigame_UpdateMusicTempo
+ jr .loop
+
+.DelayFrame:
+ call DelayFrame
+ ret
+
+SurfingPikachu_CheckPressedSelect:
+ ld hl, wd492
+ bit 1, [hl]
+ ret z
+ ldh a, [hJoyPressed]
+ and SELECT
+ ret
+
+Func_f80b7:
+ ldh a, [hJoyPressed]
+ and START
+ ret z
+ ld hl, wc5e2
+ ld a, [hl]
+ xor $1
+ ld [hl], a
+ ret
+
+SurfingMinigame_UpdateMusicTempo:
+ ld a, [wc634]
+ and a
+ ret z
+
+ ; check that all channels are on their last frame of note delay
+ ld hl, wChannelNoteDelayCounters
+ ld a, $1
+ cp [hl]
+ ret nz
+ inc hl
+ cp [hl]
+ ret nz
+ inc hl
+ cp [hl]
+ ret nz
+
+ ; de = ([wSurfingMinigamePikachuSpeed] & 0x3f) * 2
+ ld a, [wSurfingMinigamePikachuSpeed]
+ ld e, a
+ ld a, [wSurfingMinigamePikachuSpeed + 1]
+ and $3
+ ld d, a
+ sla e
+ rl d
+ ld e, d
+ ld d, $0
+ ld hl, .Tempos
+ add hl, de
+ add hl, de
+ ld a, [hli]
+ ld [wMusicTempo + 1], a
+ ld a, [hl]
+ ld [wMusicTempo], a
+ ret
+
+.Tempos:
+ dw 117
+ dw 109
+ dw 101
+ dw 93
+ dw 85
+
+SurfingMinigame_ResetMusicTempo:
+ ld hl, wChannelNoteDelayCounters
+ ld a, $1
+ cp [hl]
+ ret nz
+ inc hl
+ cp [hl]
+ ret nz
+ inc hl
+ cp [hl]
+ ret nz
+ ld a, 117
+ ld [wMusicTempo + 1], a
+ xor a
+ ld [wMusicTempo], a
+ ret
+
+SurfingPikachuMinigame_LoadGFXAndLayout:
+ call SurfingPikachu_ClearTileMap
+ call ClearSprites
+ call DisableLCD
+ ld hl, wSurfingMinigameData
+ ld bc, wSurfingMinigameDataEnd - wSurfingMinigameData
+ xor a
+ call FillMemory
+ ld hl, wLYOverrides
+ ld bc, wLYOverridesBufferEnd - wLYOverrides
+ xor a
+ call FillMemory
+ xor a
+ ldh [hAutoBGTransferEnabled], a
+ call ClearObjectAnimationBuffers
+
+ ld hl, SurfingPikachu1Graphics1
+ ld de, $9000
+ ld bc, $500
+ ld a, BANK(SurfingPikachu1Graphics1)
+ call FarCopyData
+
+ ld hl, SurfingPikachu1Graphics2
+ ld de, $8000
+ ld bc, $1000
+ ld a, BANK(SurfingPikachu1Graphics2)
+ call FarCopyData
+
+ ld a, LOW(SurfingPikachuSpawnStateDataPointer)
+ ld [wAnimatedObjectSpawnStateDataPointer], a
+ ld a, HIGH(SurfingPikachuSpawnStateDataPointer)
+ ld [wAnimatedObjectSpawnStateDataPointer + 1], a
+
+ ld a, LOW(SurfingPikachuObjectJumptable)
+ ld [wAnimatedObjectJumptablePointer], a
+ ld a, HIGH(SurfingPikachuObjectJumptable)
+ ld [wAnimatedObjectJumptablePointer + 1], a
+
+ ld a, LOW(SurfingPikachuOAMData)
+ ld [wAnimatedObjectOAMDataPointer], a
+ ld a, HIGH(SurfingPikachuOAMData)
+ ld [wAnimatedObjectOAMDataPointer + 1], a
+
+ ld a, LOW(SurfingPikachuFrames)
+ ld [wAnimatedObjectFramesDataPointer], a
+ ld a, HIGH(SurfingPikachuFrames)
+ ld [wAnimatedObjectFramesDataPointer + 1], a
+
+ ld hl, vBGMap0
+ ld bc, $80 tiles
+ ld a, $0
+ call FillMemory
+
+ ld hl, $98c0
+ ld bc, $18 tiles
+ ld a, $b
+ call FillMemory
+
+ ld a, $1
+ lb de, $74, $58
+ call SpawnAnimatedObject
+
+ ld a, $74
+ ld [wSurfingMinigamePikachuObjectHeight], a
+
+ call SurfingMinigame_InitScanlineOverrides
+
+ xor a
+ ldh [hSCX], a
+ ldh [hSCY], a
+ ld a, $7e
+ ldh [hWY], a
+ ld a, rSCY - $ff00
+ ldh [hLCDCPointer], a
+ ld a, $40
+ ld [wSurfingMinigamePikachuSpeed], a
+ xor a
+ ld [wSurfingMinigamePikachuSpeed + 1], a
+ xor a
+ ld [wSurfingMinigamePikachuHP], a
+ ld a, $60
+ ld [wSurfingMinigamePikachuHP + 1], a
+ ld hl, wSurfingMinigameWaveHeight
+ ld bc, $14
+ ld a, $74
+ call FillMemory
+ call Func_f81ff
+ call Func_f8256
+ ld a, $e3
+ ldh [rLCDC], a
+ call SurfingPikachuMinigame_SetBGPals
+ ld a, $e4
+ ldh [rOBP0], a
+ ld a, $e0
+ ldh [rOBP1], a
+ call UpdateGBCPal_OBP0
+ call UpdateGBCPal_OBP1
+ ret
+
+SurfingPikachuMinigame_SetBGPals:
+ ld a, [wOnSGB]
+ and a
+ jr nz, .sgb
+ ld a, $d0
+ ldh [rBGP], a
+ call UpdateGBCPal_BGP
+ ret
+
+.sgb
+ ld a, $e4
+ ldh [rBGP], a
+ call UpdateGBCPal_BGP
+ ret
+
+Func_f81ff:
+ ld hl, wSpriteDataEnd
+ ld de, Unkn_f8249
+ ld b, $97
+ ld c, $80
+ ld a, $4
+ call Func_f8233
+ ld de, Unkn_f8248
+ ld b, $96
+ ld c, $50
+ ld a, $1
+ call Func_f8233
+ ld de, Unkn_f824d
+ ld b, $14
+ ld c, $20
+ ld a, $5
+ call Func_f8233
+ ld de, Unkn_f8252
+ ld b, $20
+ ld c, $80
+ ld a, $4
+ call Func_f8233
+ ret
+
+Func_f8233:
+.asm_f8233
+ push af
+ ld [hl], b
+ inc hl
+ ld [hl], c
+ inc hl
+ ld a, [de]
+ ld [hl], a
+ inc hl
+ ld [hl], $0
+ inc hl
+ ld a, c
+ add $8
+ ld c, a
+ inc de
+ pop af
+ dec a
+ jr nz, .asm_f8233
+ ret
+
+Unkn_f8248:
+ db $fe
+
+Unkn_f8249:
+ db $d0
+ db $d0
+ db $d0
+ db $d0
+
+Unkn_f824d:
+ db $ec
+ db $ed
+ db $ed
+ db $ee
+ db $ef
+
+Unkn_f8252:
+ db $ec
+ db $ed
+ db $ee
+ db $ef
+
+Func_f8256:
+ ld de, $9c21
+ ld hl, Unkn_f8279
+ ld c, $9
+.asm_f825e
+ ld a, [hli]
+ ld [de], a
+ inc de
+ dec c
+ jr nz, .asm_f825e
+ ld hl, $9c01
+ ld [hl], $15
+ ld hl, $9c02
+ ld [hl], $16
+ ld hl, $9c2c
+ ld [hl], $1b
+ ld hl, $9c2d
+ ld [hl], $1c
+ ret
+
+Unkn_f8279:
+ db $17
+ db $18
+ db $19
+ db $19
+ db $19
+ db $19
+ db $19
+ db $19
+ db $19
+
+RunSurfingMinigameRoutine:
+ ld a, [wSurfingMinigameRoutineNumber]
+ ld e, a
+ ld d, $0
+ ld hl, .Jumptable
+ add hl, de
+ add hl, de
+ ld a, [hli]
+ ld h, [hl]
+ ld l, a
+ jp hl
+
+.Jumptable:
+ dw SurfingMinigameRoutine_SpawnPikachu ; 0
+ dw SurfingMinigame_RunGame ; 1
+ dw Func_f8324 ; 2
+ dw Func_f835c ; 3
+ dw SurfingMinigame_DrawResultsScreenAndWait ; 4
+ dw SurfingMinigame_WriteHPLeftAndWait ; 5
+ dw SurfingMinigame_WriteRadnessAndWait ; 6
+ dw SurfingMinigame_WriteTotalAndWait ; 7
+ dw SurfingMinigame_AddRemainingHPToTotalAndWait ; 8
+ dw SurfingMinigame_AddRadnessToTotalAndWait ; 9
+ dw SurfingMinigame_WaitLast ; a
+ dw SurfingMinigame_ExitOnPressA ; b
+ dw SurfingMinigame_GameOver ; c
+
+SurfingMinigameRoutine_SpawnPikachu:
+ ld a, $2
+ lb de, $48, $e0
+ call SpawnAnimatedObject
+ ld hl, wSurfingMinigameRoutineNumber
+ inc [hl]
+ ld a, $1
+ ld [wc634], a
+ ret
+
+SurfingMinigame_RunGame:
+ ld a, [wc5e5]
+ cp $18
+ jr nc, .asm_f82e8
+ ld hl, wSurfingMinigamePikachuHP
+ ld a, [hli]
+ or [hl]
+ and a
+ jr z, .dead
+ call Random
+ ld [wc5d5], a
+ call SurfingMinigame_UpdateLYOverrides
+ call SurfingMinigame_SetPikachuHeight
+ call SurfingMinigame_ReadBGMapBuffer
+ call SurfingMinigame_ScrollAndGenerateBGMap
+ call SurfingMinigame_UpdatePikachuDistance
+ call SurfingMinigame_Deduct1HP
+ call SurfingMinigame_DrawHP
+ ret
+
+.asm_f82e8
+ ld hl, wSurfingMinigameRoutineNumber
+ inc [hl]
+ xor a
+ ld [wc634], a
+ ld a, 192
+ ld [wSurfingMinigameRoutineDelay], a
+ ret
+
+.dead
+ ld a, $1
+ ld [wc630], a
+ ld a, $c
+ ld [wSurfingMinigameRoutineNumber], a
+ ld a, $80
+ ld [wc631], a
+ ld a, $b
+ lb de, $88, $58
+ call SpawnAnimatedObject
+ ld hl, ANIM_OBJ_Y_OFFSET
+ add hl, bc
+ ld [hl], $80
+ ld hl, ANIM_OBJ_FIELD_B
+ add hl, bc
+ ld [hl], $80
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld [hl], $30
+ xor a
+ ld [wc634], a
+ ret
+
+Func_f8324:
+ call SurfingMinigame_RunDelayTimer
+ jr c, .done_delay
+ xor a
+ ld [wc5d5], a
+ call SurfingMinigame_UpdateLYOverrides
+ call SurfingMinigame_SetPikachuHeight
+ call SurfingMinigame_ReadBGMapBuffer
+ call Func_f8c97
+ call SurfingMinigame_ResetMusicTempo
+ ret
+
+.done_delay
+ ld hl, wSurfingMinigameRoutineNumber
+ inc [hl]
+ ld a, $90
+ ldh [hSCX], a
+ ld a, $72
+ ld [wSurfingMinigameWaveFunctionNumber], a
+ ld a, $4
+ ld [wc5d2], a
+ xor a
+ ldh [hLCDCPointer], a
+ ld [wSurfingMinigameSCX], a
+ ld [wSurfingMinigameSCX + 1], a
+ ld [wSurfingMinigameSCX + 2], a
+ ret
+
+Func_f835c:
+ ldh a, [hSCX]
+ and a
+ jr z, .asm_f837b
+ call SurfingMinigame_UpdateLYOverrides
+ call SurfingMinigame_SetPikachuHeight
+ call SurfingMinigame_ReadBGMapBuffer
+ ldh a, [hSCX]
+ dec a
+ dec a
+ dec a
+ dec a
+ ldh [hSCX], a
+ ld a, $e0
+ ld [wSurfingMinigameXOffset], a
+ call SurfingMinigame_GenerateBGMap
+ ret
+
+.asm_f837b
+ xor a
+ ld [wSurfingMinigamePikachuSpeed], a
+ ld [wSurfingMinigamePikachuSpeed + 1], a
+ ld hl, wSurfingMinigameRoutineNumber
+ inc [hl]
+ ld a, $5
+ ld [wc5d2], a
+ ret
+
+SurfingMinigame_DrawResultsScreenAndWait:
+ call SurfingMinigame_DrawResultsScreen
+ ld a, 32
+ ld [wSurfingMinigameRoutineDelay], a
+ ld hl, wSurfingMinigameRoutineNumber
+ inc [hl]
+ ret
+
+SurfingMinigame_WriteHPLeftAndWait:
+ call SurfingMinigame_RunDelayTimer
+ ret nc
+ call SurfingMinigame_WriteHPLeft
+ ld a, 64
+ ld [wSurfingMinigameRoutineDelay], a
+ ld hl, wSurfingMinigameRoutineNumber
+ inc [hl]
+ ret
+
+SurfingMinigame_WriteRadnessAndWait:
+ call SurfingMinigame_RunDelayTimer
+ ret nc
+ call SurfingMinigame_WriteRadness
+ ld a, 64
+ ld [wSurfingMinigameRoutineDelay], a
+ ld hl, wSurfingMinigameRoutineNumber
+ inc [hl]
+ ret
+
+SurfingMinigame_WriteTotalAndWait:
+ call SurfingMinigame_RunDelayTimer
+ ret nc
+ call SurfingMinigame_WriteTotal
+ ld a, 64
+ ld [wSurfingMinigameRoutineDelay], a
+ ld hl, wSurfingMinigameRoutineNumber
+ inc [hl]
+ ret
+
+SurfingMinigame_AddRemainingHPToTotalAndWait:
+ call SurfingMinigame_RunDelayTimer
+ ret nc
+ call SurfingMinigame_AddRemainingHPToTotal
+ push af
+ call SurfingMinigame_BCDPrintTotalScore
+ pop af
+ ret nc
+ ld a, 64
+ ld [wSurfingMinigameRoutineDelay], a
+ ld hl, wSurfingMinigameRoutineNumber
+ inc [hl]
+ ret
+
+SurfingMinigame_AddRadnessToTotalAndWait:
+ call SurfingMinigame_RunDelayTimer
+ ret nc
+ call SurfingMinigame_AddRadnessToTotal
+ push af
+ call SurfingMinigame_BCDPrintTotalScore
+ pop af
+ ret nc
+ ld a, 128
+ ld [wSurfingMinigameRoutineDelay], a
+ ld hl, wSurfingMinigameRoutineNumber
+ inc [hl]
+ call DidPlayerGetAHighScore
+ ret nc
+ call SurfingMinigame_PrintTextHiScore
+ ld a, $6
+ ld [wc5d2], a
+ ret
+
+SurfingMinigame_WaitLast:
+ call SurfingMinigame_RunDelayTimer
+ ret nc
+ ld hl, wSurfingMinigameRoutineNumber
+ inc [hl]
+ ret
+
+SurfingMinigame_ExitOnPressA:
+ call SurfingMinigame_UpdateLYOverrides
+ ldh a, [hJoyPressed]
+ and A_BUTTON
+ ret z
+ ld hl, wSurfingMinigameRoutineNumber
+ set 7, [hl]
+ ret
+
+SurfingMinigame_GameOver:
+ call SurfingMinigame_UpdateLYOverrides
+ call SurfingMinigame_SetPikachuHeight
+ call SurfingMinigame_ReadBGMapBuffer
+ call SurfingMinigame_ScrollAndGenerateBGMap
+ call SurfingMinigame_ResetMusicTempo
+ ld hl, wc631
+ ld a, [hl]
+ and a
+ jr z, .wait_press_a
+ dec [hl]
+ ret
+
+.wait_press_a
+ ldh a, [hJoyPressed]
+ and A_BUTTON
+ ret z
+ ld hl, wSurfingMinigameRoutineNumber
+ set 7, [hl]
+ ret
+
+SurfingMinigame_RunDelayTimer:
+ ld hl, wSurfingMinigameRoutineDelay
+ ld a, [hl]
+ and a
+ jr z, .set_carry
+ dec [hl]
+ and a
+ ret
+
+.set_carry
+ scf
+ ret
+
+SurfingMinigame_UpdatePikachuDistance:
+ ld a, [wc5e5 + 1]
+ ld h, a
+ ld a, [wc5e5 + 2]
+ ld l, a
+ ld a, [wSurfingMinigamePikachuSpeed]
+ ld e, a
+ ld a, [wSurfingMinigamePikachuSpeed + 1]
+ ld d, a
+ add hl, de
+ ld a, h
+ ld [wc5e5 + 1], a
+ ld a, l
+ ld [wc5e5 + 2], a
+ ret nc
+ ld hl, wc5e5
+ inc [hl]
+ ld hl, wOAMBuffer + 4 * 4 + 1
+ dec [hl]
+ dec [hl]
+ ret
+
+SurfingMinigameAnimatedObjectFn_Pikachu:
+ ld a, [wc5d2]
+ ld e, a
+ ld d, $0
+ ld hl, Jumptable_f847f
+ add hl, de
+ add hl, de
+ ld a, [hli]
+ ld h, [hl]
+ ld l, a
+ jp hl
+
+Jumptable_f847f:
+ dw Func_f848d
+ dw SurfingMinigame_ScoreCurrentWave
+ dw Func_f8516
+ dw Func_f8545
+ dw Func_f8561
+ dw Func_f856d
+ dw Func_f8579
+
+Func_f848d:
+ ld a, [wc630]
+ and a
+ jr nz, .asm_f84d2
+ call Func_f87b5
+ ld a, [wSurfingMinigamePikachuObjectHeight]
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld [hl], a
+ call Func_f871e
+ jr c, .splash
+ call Func_f8742
+ call SurfingMinigame_SpeedUpPikachu
+ ret
+
+.splash
+ call Func_f8742
+ ld a, $1 ; on a wave
+ ld [wc5d2], a
+ xor a
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld [hl], a
+ ld hl, ANIM_OBJ_FIELD_D
+ add hl, bc
+ ld [hl], a
+ ld hl, ANIM_OBJ_FIELD_E
+ add hl, bc
+ ld [hl], a
+ ld [wSurfingMinigameRadnessMeter], a
+ ld [wSurfingMinigameTrickFlags], a
+ xor a
+ ld [wChannelSoundIDs + Ch8], a
+ ld a, SFX_SURFING_JUMP
+ call PlaySound
+ ret
+
+.asm_f84d2
+ xor a
+ ld [wSurfingMinigamePikachuSpeed], a
+ ld [wSurfingMinigamePikachuSpeed + 1], a
+ ld a, $4
+ ld [wc5d2], a
+ call Func_f8742
+ ret
+
+SurfingMinigame_ScoreCurrentWave:
+ call SurfingMinigame_DPadAction
+ call SurfingMinigame_UpdatePikachuHeight
+ ret nc
+ call SurfingMinigame_TileInteraction
+ jr c, .splash
+ call SurfingMinigame_CalculateAndAddRadnessFromStunt
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld [hl], $0
+ ld a, $2
+ ld [wc5d2], a
+ ret
+
+.splash
+ ld a, $3
+ ld [wc5d2], a
+ ld a, $60
+ ld [wc5e1], a
+ ld a, $10
+ call SetCurrentAnimatedObjectCallbackAndResetFrameStateRegisters
+ xor a
+ ld [wChannelSoundIDs + Ch8], a
+ ld a, SFX_SURFING_CRASH
+ call PlaySound
+ ret
+
+Func_f8516:
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld a, [hl]
+ cp $20
+ jr nc, .asm_f8539
+ inc [hl]
+ inc [hl]
+ inc [hl]
+ inc [hl]
+ ld d, $4
+ call SurfingPikachu_Sine
+ ld hl, ANIM_OBJ_Y_OFFSET
+ add hl, bc
+ ld [hl], a
+ call Func_f87b5
+ ld a, [wSurfingMinigamePikachuObjectHeight]
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld [hl], a
+ ret
+
+.asm_f8539
+ ld hl, ANIM_OBJ_Y_OFFSET
+ add hl, bc
+ ld [hl], $0
+ ld a, $0
+ ld [wc5d2], a
+ ret
+
+Func_f8545:
+ ld hl, wc5e1
+ ld a, [hl]
+ and a
+ jr z, .asm_f8556
+ dec [hl]
+ ld a, [wSurfingMinigamePikachuObjectHeight]
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld [hl], a
+ ret
+
+.asm_f8556
+ ld a, $0
+ ld [wc5d2], a
+ ld a, $4
+ call SetCurrentAnimatedObjectCallbackAndResetFrameStateRegisters
+ ret
+
+Func_f8561:
+ ld a, [wSurfingMinigamePikachuObjectHeight]
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld [hl], a
+ call Func_f8742
+ ret
+
+Func_f856d:
+ ld a, $f
+ call SetCurrentAnimatedObjectCallbackAndResetFrameStateRegisters
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld [hl], $0
+ ret
+
+Func_f8579:
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld a, [hl]
+ inc [hl]
+ inc [hl]
+ and $3f
+ cp $20
+ jr c, .asm_f8591
+ ld d, $10
+ call SurfingPikachu_Sine
+ ld hl, ANIM_OBJ_Y_OFFSET
+ add hl, bc
+ ld [hl], a
+ ret
+
+.asm_f8591
+ ld hl, ANIM_OBJ_Y_OFFSET
+ add hl, bc
+ ld [hl], $0
+ ret
+
+SurfingMinigame_DPadAction:
+ ld de, hJoy5
+ ld a, [de]
+ and D_LEFT
+ jr nz, .d_left
+ ld a, [de]
+ and D_RIGHT
+ jr nz, .d_right
+ ret
+
+.d_left
+ ld hl, ANIM_OBJ_FIELD_E
+ add hl, bc
+ ld [hl], $0
+ ld hl, ANIM_OBJ_FIELD_D
+ add hl, bc
+ ld a, [hl]
+ inc [hl]
+ cp $b
+ jr c, .d_left_skip
+ call .StartTrick
+ ld hl, wSurfingMinigameTrickFlags
+ set 0, [hl]
+.d_left_skip
+ ld hl, ANIM_OBJ_FRAME_SET
+ add hl, bc
+ ld a, [hl]
+ cp $e
+ jr nc, .d_left_reset
+ inc [hl]
+ ret
+
+.d_left_reset
+ ld [hl], $1
+ ret
+
+.d_right
+ ld hl, ANIM_OBJ_FIELD_D
+ add hl, bc
+ ld [hl], $0
+ ld hl, ANIM_OBJ_FIELD_E
+ add hl, bc
+ ld a, [hl]
+ inc [hl]
+ cp $d
+ jr c, .d_right_skip
+ call .StartTrick
+ ld hl, wSurfingMinigameTrickFlags
+ set 1, [hl]
+.d_right_skip
+ ld hl, ANIM_OBJ_FRAME_SET
+ add hl, bc
+ ld a, [hl]
+ cp $1
+ jr z, .d_right_reset
+ dec [hl]
+ ret
+
+.d_right_reset
+ ld [hl], $e
+ ret
+
+.StartTrick:
+ call SurfingMinigame_IncreaseRadnessMeter
+ xor a
+ ld hl, ANIM_OBJ_FIELD_D
+ add hl, bc
+ ld [hl], a
+ ld hl, ANIM_OBJ_FIELD_E
+ add hl, bc
+ ld [hl], a
+ ld a, SFX_SURFING_FLIP
+ call PlaySound
+ ret
+
+SurfingMinigame_TileInteraction:
+ ld hl, ANIM_OBJ_FRAME_SET
+ add hl, bc
+ ld a, [wSurfingMinigameBGMapReadBuffer]
+ cp $6
+ jr z, .tile_06
+ cp $14
+ jr z, .tile_14
+ cp $12
+ jr z, .tile_12
+ cp $7
+ jr z, .tile_07
+ ld a, [hl]
+ cp $1
+ jp z, .action_0
+ cp $2
+ jr z, .action_1
+ cp $3
+ jr z, .action_2
+ cp $4
+ jr z, .action_3
+ cp $5
+ jr z, .action_2
+ cp $6
+ jr z, .action_1
+ cp $7
+ jr z, .action_0
+ jr .action_0
+
+.tile_06
+ ld a, [hl]
+ cp $1
+ jr z, .action_0
+ cp $2
+ jr z, .action_0
+ cp $3
+ jr z, .action_0
+ cp $4
+ jr z, .action_1
+ cp $5
+ jr z, .action_2
+ cp $6
+ jr z, .action_3
+ cp $7
+ jr z, .action_2
+ jr .action_0
+
+.tile_07
+ ld a, [hl]
+ cp $1
+ jr z, .action_2
+ cp $2
+ jr z, .action_3
+ cp $3
+ jr z, .action_2
+ cp $4
+ jr z, .action_1
+ cp $5
+ jr z, .action_0
+ cp $6
+ jr z, .action_0
+ cp $7
+ jr z, .action_0
+ jr .action_0
+
+.tile_12
+.tile_14
+ ld a, [hl]
+ cp $1
+ jr z, .action_0
+ cp $2
+ jr z, .action_1
+ cp $3
+ jr z, .action_2
+ cp $4
+ jr z, .action_3
+ cp $5
+ jr z, .action_3
+ cp $6
+ jr z, .action_2
+ cp $7
+ jr z, .action_1
+ jr .action_0
+
+.action_1
+ call SufingMinigame_ReduceSpeedBy128
+ jr .action_3
+
+.action_2
+ call SufingMinigame_ReduceSpeedBy64
+.action_3
+ xor a
+ ld [wChannelSoundIDs + Ch8], a
+ ld a, SFX_SURFING_LAND
+ call PlaySound
+ and a
+ ret
+
+.action_0
+ ld a, $40
+ ld [wSurfingMinigamePikachuSpeed], a
+ xor a
+ ld [wSurfingMinigamePikachuSpeed + 1], a
+ scf
+ ret
+
+SurfingMinigame_SpeedUpPikachu:
+ ld a, [wSurfingMinigamePikachuSpeed + 1]
+ cp $2
+ ret nc
+ ld h, a
+ ld a, [wSurfingMinigamePikachuSpeed]
+ ld l, a
+ ld de, $2
+ add hl, de
+ ld a, h
+ ld [wSurfingMinigamePikachuSpeed + 1], a
+ ld a, l
+ ld [wSurfingMinigamePikachuSpeed], a
+ ret
+
+SufingMinigame_ReduceSpeedBy64:
+ ld a, [wSurfingMinigamePikachuSpeed + 1]
+ and a
+ jr nz, .go
+ ld a, [wSurfingMinigamePikachuSpeed]
+ cp $40
+ jr nc, .go
+ xor a
+ ld [wSurfingMinigamePikachuSpeed], a
+ ret
+
+.go
+ ld a, [wSurfingMinigamePikachuSpeed + 1]
+ ld h, a
+ ld a, [wSurfingMinigamePikachuSpeed]
+ ld l, a
+ ld de, -$40
+ add hl, de
+ ld a, h
+ ld [wSurfingMinigamePikachuSpeed + 1], a
+ ld a, l
+ ld [wSurfingMinigamePikachuSpeed], a
+ ret
+
+SufingMinigame_ReduceSpeedBy128:
+ ld a, [wSurfingMinigamePikachuSpeed + 1]
+ and a
+ jr nz, .go
+ ld a, [wSurfingMinigamePikachuSpeed]
+ cp $80
+ jr nc, .go
+ xor a
+ ld [wSurfingMinigamePikachuSpeed], a
+ ret
+
+.go
+ ld a, [wSurfingMinigamePikachuSpeed + 1]
+ ld h, a
+ ld a, [wSurfingMinigamePikachuSpeed]
+ ld l, a
+ ld de, -$80
+ add hl, de
+ ld a, h
+ ld [wSurfingMinigamePikachuSpeed + 1], a
+ ld a, l
+ ld [wSurfingMinigamePikachuSpeed], a
+ ret
+
+Func_f871e:
+ ldh a, [hSCX]
+ and $7
+ cp $3
+ jr c, .asm_f8740
+ cp $5
+ jr nc, .asm_f8740
+ ld a, [wSurfingMinigameBGMapReadBuffer]
+ cp $14
+ jr nz, .asm_f8740
+ call SufingMinigame_GetSpeedDividedBy32
+ cp $a
+ jr c, .asm_f8740
+ ld [wc5ec], a
+ call Func_f9284
+ scf
+ ret
+
+.asm_f8740
+ and a
+ ret
+
+Func_f8742:
+ ldh a, [hSCX]
+ and $7
+ cp $3
+ ret c
+ cp $5
+ ret nc
+ ld a, [wSurfingMinigameBGMapReadBuffer]
+ cp $6
+ jr z, .asm_f8766
+ cp $14
+ jr z, .asm_f8766
+ cp $7
+ jr z, .asm_f876a
+ call Func_f8778
+ ld a, $4
+ ld hl, ANIM_OBJ_FRAME_SET
+ add hl, bc
+ ld [hl], a
+ ret
+
+.asm_f8766
+ ld a, $6
+ jr .asm_f876c
+
+.asm_f876a
+ ld a, $2
+.asm_f876c
+ ld e, a
+ ld a, [wc5de]
+ dec a
+ add e
+ ld hl, ANIM_OBJ_FRAME_SET
+ add hl, bc
+ ld [hl], a
+ ret
+
+Func_f8778:
+ ld hl, wc5e0
+ ld a, [hl]
+ inc [hl]
+ and $7
+ ret nz
+ ld a, [wc5df]
+ and a
+ jr z, .asm_f8796
+ ld a, [wc5de]
+ and a
+ jr z, .asm_f8791
+ dec a
+ ld [wc5de], a
+ ret
+
+.asm_f8791
+ xor a
+ ld [wc5df], a
+ ret
+
+.asm_f8796
+ ld a, [wc5de]
+ cp $2
+ jr z, .asm_f87a2
+ inc a
+ ld [wc5de], a
+ ret
+
+.asm_f87a2
+ ld a, $1
+ ld [wc5df], a
+ ret
+
+SufingMinigame_GetSpeedDividedBy32:
+ ld a, [wSurfingMinigamePikachuSpeed]
+ ld l, a
+ ld a, [wSurfingMinigamePikachuSpeed + 1]
+ ld h, a
+ add hl, hl
+ add hl, hl
+ add hl, hl
+ ld a, h
+ ret
+
+Func_f87b5:
+ ld hl, wc5eb
+ ld a, [hl]
+ inc [hl]
+ and $3
+ ret nz
+ call .GetYCoord
+ ld d, a
+ ld hl, ANIM_OBJ_X_COORD
+ add hl, bc
+ ld e, [hl]
+ ld a, $a
+ push bc
+ call SpawnAnimatedObject
+ pop bc
+ ret
+
+.GetYCoord:
+ ldh a, [hSCX]
+ and $8
+ jr nz, .get_height_plus_9
+ ld hl, wSurfingMinigameWaveHeight + 8
+ jr .got_hl
+
+.get_height_plus_9
+ ld hl, wSurfingMinigameWaveHeight + 9
+.got_hl
+ ld a, [wSurfingMinigameBGMapReadBuffer + 1]
+ cp $6
+ jr z, .six_or_twenty
+ cp $14
+ jr z, .six_or_twenty
+ cp $7
+ jr z, .seven
+ ld a, [hl]
+ ret
+
+.six_or_twenty
+ ldh a, [hSCX]
+ and $7
+ ld e, a
+ ld a, [hl]
+ sub e
+ ret
+
+.seven
+ ldh a, [hSCX]
+ and $7
+ add [hl]
+ ret
+
+Func_f87fb:
+ ld hl, ANIM_OBJ_X_COORD
+ add hl, bc
+ ld a, [hl]
+ cp $58
+ ret z
+ add $4
+ ld [hl], a
+ ret
+
+Func_f8807: ; unreferenced
+ call MaskCurrentAnimatedObjectStruct
+ ret
+
+SurfingMinigameAnimatedObjectFn_FlippingPika:
+ ld hl, ANIM_OBJ_FIELD_B
+ add hl, bc
+ ld a, [hl]
+ and a
+ ret z
+ dec [hl]
+ dec [hl]
+ ld d, a
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld a, [hl]
+ inc [hl]
+ call SurfingPikachu_Sine
+ cp $80
+ jr nc, .positive
+ xor $ff
+ inc a
+.positive
+ ld hl, ANIM_OBJ_Y_OFFSET
+ add hl, bc
+ ld [hl], a
+ ret
+
+SurfingMinigameAnimatedObjectFn_IntroAnimationPikachu:
+ ld hl, ANIM_OBJ_FIELD_B
+ add hl, bc
+ ld a, [hl]
+ inc [hl]
+ and $1
+ ret z
+ ld hl, ANIM_OBJ_X_COORD
+ add hl, bc
+ ld a, [hl]
+ cp $c0
+ jr z, .done
+ inc [hl]
+ ret
+
+.done
+ ld a, $1
+ ld [wSurfingMinigameIntroAnimationFinished], a
+ call MaskCurrentAnimatedObjectStruct
+ ret
+
+SurfingMinigame_MoveClouds:
+ ld a, [wc635]
+ ld e, a
+ ld d, $0
+ ld a, [wSurfingMinigamePikachuSpeed]
+ ld l, a
+ ld a, [wSurfingMinigamePikachuSpeed + 1]
+ ld h, a
+ add hl, de
+ ld a, l
+ ld [wc635], a
+ ld d, h
+ ld hl, wOAMBuffer + 5 * 4 + 1
+ ld e, $9
+.loop
+ ld a, [hl]
+ add d
+ ld [hli], a
+ inc hl
+ inc hl
+ inc hl
+ dec e
+ jr nz, .loop
+ ret
+
+SurfingMinigame_ReadBGMapBuffer:
+ ld a, [wSurfingMinigameBGMapReadBuffer] ; ???
+ ldh a, [hSCX]
+ add $48
+ ld e, a
+ srl e
+ srl e
+ srl e
+ ld d, $0
+ ld hl, vBGMap0
+ add hl, de
+ ld a, [wSurfingMinigamePikachuObjectHeight]
+ srl a
+ srl a
+ srl a
+ ld c, a
+.loop
+ ld a, c
+ and a
+ jr z, .copy
+ dec c
+ ld de, $20
+ add hl, de
+ ld a, h
+ and $3
+ or $98
+ ld h, a
+ jr .loop
+
+.copy
+ ld de, wSurfingMinigameBGMapReadBuffer
+ ld a, e
+ ldh [hVBlankCopyDest], a
+ ld a, d
+ ldh [hVBlankCopyDest + 1], a
+ ld a, l
+ ldh [hVBlankCopySource], a
+ ld a, h
+ ldh [hVBlankCopySource + 1], a
+ ld a, 16 / $10
+ ldh [hVBlankCopySize], a
+ ret
+
+SurfingMinigame_SetPikachuHeight:
+ ldh a, [hSCX]
+ and $8
+ jr nz, .asm_f88b9
+ ld hl, wSurfingMinigameWaveHeight + 7
+ jr .asm_f88bc
+
+.asm_f88b9
+ ld hl, wSurfingMinigameWaveHeight + 8
+.asm_f88bc
+ ld a, [wSurfingMinigameBGMapReadBuffer]
+ cp $6
+ jr z, .asm_f88d0
+ cp $14
+ jr z, .asm_f88d0
+ cp $7
+ jr z, .asm_f88db
+ ld a, [hl]
+ ld [wSurfingMinigamePikachuObjectHeight], a
+ ret
+
+.asm_f88d0
+ ldh a, [hSCX]
+ and $7
+ ld e, a
+ ld a, [hl]
+ sub e
+ ld [wSurfingMinigamePikachuObjectHeight], a
+ ret
+
+.asm_f88db
+ ldh a, [hSCX]
+ and $7
+ add [hl]
+ ld [wSurfingMinigamePikachuObjectHeight], a
+ ret
+
+SurfingMinigame_Deduct1HP:
+ ld hl, wSurfingMinigamePikachuHP
+ ld e, $99
+ call .BCD_Deduct
+ ret nc
+ inc hl
+ ld e, $99
+.BCD_Deduct:
+ ld a, [hl]
+ and a
+ jr z, .roll_over
+ sub $1
+ daa
+ ld [hl], a
+ and a
+ ret
+
+.roll_over
+ ld [hl], e
+ scf
+ ret
+
+SurfingMinigame_DrawHP:
+ ld de, wSurfingMinigamePikachuHP + 1
+ ld hl, wOAMBuffer + 0 * 4 + 2
+ ld a, [de]
+ call .PlaceBCDNumber
+ ld hl, wOAMBuffer + 2 * 4 + 2
+ ld a, [de]
+.PlaceBCDNumber:
+ ld c, a
+ swap a
+ and $f
+ add $d0
+ ld [hli], a
+ inc hl
+ inc hl
+ inc hl
+ ld a, c
+ and $f
+ add $d0
+ ld [hl], a
+ dec de
+ ret
+
+SurfingMinigame_DrawResultsScreen:
+ ld hl, wTileMap
+ ld bc, SCREEN_WIDTH * SCREEN_HEIGHT
+ xor a
+ call FillMemory
+ ld hl, .BeachTilemap
+ decoord 0, 6
+ ld bc, .BeachTilemapEnd - .BeachTilemap
+ call CopyData
+ call .PlaceTextbox
+ ld hl, wOAMBuffer + 5 * 4 + 1
+ ld bc, 9 * 4
+ xor a
+ call FillMemory
+ ld a, $1
+ ldh [hAutoBGTransferEnabled], a
+ ret
+
+.BeachTilemap:
+INCBIN "gfx/surfing_pikachu/unknown_f8946.map"
+.BeachTilemapEnd:
+
+.PlaceTextbox:
+ hlcoord 1, 1
+ lb de, $3b, $3c
+ ld a, $40
+ call .place_row
+ hlcoord 1, 2
+ lb de, $3f, $3f
+ ld a, $ff
+ call .place_row
+ hlcoord 1, 3
+ lb de, $3f, $3f
+ ld a, $ff
+ call .place_row
+ hlcoord 1, 4
+ lb de, $3f, $3f
+ ld a, $ff
+ call .place_row
+ hlcoord 1, 5
+ lb de, $3f, $3f
+ ld a, $ff
+ call .place_row
+ hlcoord 1, 6
+ lb de, $3f, $3f
+ ld a, $ff
+ call .place_row
+ hlcoord 1, 7
+ lb de, $3f, $3f
+ ld a, $ff
+ call .place_row
+ hlcoord 1, 8
+ lb de, $3f, $3f
+ ld a, $ff
+ call .place_row
+ hlcoord 1, 9
+ lb de, $3d, $3e
+ ld a, $40
+ call .place_row
+ ret
+
+.place_row:
+ ld [hl], d
+ inc hl
+ ld c, $10
+.loop
+ ld [hli], a
+ dec c
+ jr nz, .loop
+ ld [hl], e
+ ret
+
+SurfingMinigame_PrintTextHiScore:
+ ld hl, .Hi_Score
+ decoord 6, 8
+ ld bc, $9
+ call CopyData
+ ret
+
+.Hi_Score:
+ db $20,$2e,$2f,$30,$31,$2c,$32,$23,$33 ; Hi-Score!!
+
+SurfingMinigame_WriteHPLeft:
+ ld hl, .HP_Left
+ decoord 2, 2
+ ld bc, $7
+ call CopyData
+ call SurfingMinigame_BCDPrintHPLeft
+ ret
+
+.HP_Left:
+ db $20,$21,$ff,$22,$23,$24,$25 ; HP Left
+
+SurfingMinigame_AddRemainingHPToTotal:
+ ld c, 99
+.loop
+ push bc
+ ld hl, wSurfingMinigamePikachuHP
+ ld a, [hli]
+ or [hl]
+ and a
+ jr z, .dead
+ call SurfingMinigame_Deduct1HP
+ ld e, $1
+ call SurfingMinigame_AddPointsToTotal
+ pop bc
+ dec c
+ jr nz, .loop
+ ld a, SFX_PRESS_AB
+ call PlaySound
+ and a
+ ret
+
+.dead
+ pop bc
+ scf
+ ret
+
+SurfingMinigame_BCDPrintHPLeft:
+ hlcoord 10, 2
+ ld de, wSurfingMinigamePikachuHP + 1
+ ld a, [de]
+ call SurfingPikachu_PlaceBCDNumber
+ inc hl
+ ld a, [de]
+ call SurfingPikachu_PlaceBCDNumber
+ inc hl
+ inc hl
+ ld [hl], $21 ; P
+ inc hl
+ ld [hl], $25 ; t
+ inc hl
+ ld [hl], $26 ; s
+ ret
+
+SurfingMinigame_WriteRadness:
+ ld hl, .Radness
+ decoord 2, 4
+ ld bc, $7
+ call CopyData
+ call SurfingMinigame_BCDPrintRadness
+ ret
+
+.Radness:
+ db $27,$28,$29,$2a,$23,$26,$26 ; Radness
+
+SurfingMinigame_AddRadnessToTotal:
+ ld c, 99
+.loop
+ push bc
+ ld hl, wSurfingMinigameRadnessScore
+ ld a, [hli]
+ ld e, a
+ or [hl]
+ jr z, .done
+ ld d, [hl]
+ ld a, e
+ sub $1
+ daa
+ ld e, a
+ ld a, d
+ sbc $0
+ daa
+ ld [hld], a
+ ld [hl], e
+ ld e, $1
+ call SurfingMinigame_AddPointsToTotal
+ pop bc
+ dec c
+ jr nz, .loop
+ ld a, SFX_PRESS_AB
+ call PlaySound
+ and a
+ ret
+
+.done
+ pop bc
+ scf
+ ret
+
+SurfingMinigame_BCDPrintRadness:
+ ld a, [wSurfingMinigameRadnessScore + 1]
+ hlcoord 10, 4
+ call SurfingPikachu_PlaceBCDNumber
+ ld a, [wSurfingMinigameRadnessScore]
+ hlcoord 12, 4
+ call SurfingPikachu_PlaceBCDNumber
+ inc hl
+ inc hl
+ ld [hl], $21 ; P
+ inc hl
+ ld [hl], $25 ; t
+ inc hl
+ ld [hl], $26 ; s
+ ret
+
+SurfingMinigame_AddPointsToTotal:
+ ld a, [wSurfingMinigameTotalScore]
+ add e
+ daa
+ ld [wSurfingMinigameTotalScore], a
+ ld a, [wSurfingMinigameTotalScore + 1]
+ adc $0
+ daa
+ ld [wSurfingMinigameTotalScore + 1], a
+ ret nc
+ ld a, $99
+ ld [wSurfingMinigameTotalScore], a
+ ld [wSurfingMinigameTotalScore + 1], a
+ ret
+
+SurfingMinigame_BCDPrintTotalScore:
+ ld a, [wSurfingMinigameTotalScore + 1]
+ hlcoord 10, 6
+ call SurfingPikachu_PlaceBCDNumber
+ ld a, [wSurfingMinigameTotalScore]
+ hlcoord 12, 6
+ call SurfingPikachu_PlaceBCDNumber
+ inc hl
+ inc hl
+ ld [hl], $21 ; P
+ inc hl
+ ld [hl], $25 ; t
+ inc hl
+ ld [hl], $26 ; s
+ ret
+
+SurfingMinigame_WriteTotal:
+ ld hl, .Total
+ decoord 2, 6
+ ld bc, $5
+ call CopyData
+ call SurfingMinigame_BCDPrintRadness
+ call SurfingMinigame_BCDPrintTotalScore
+ ret
+
+.Total:
+ db $2b,$2c,$25,$28,$2d ; Total
+
+DidPlayerGetAHighScore:
+ ld hl, wSurfingMinigameHiScore + 1
+ ld a, [wSurfingMinigameTotalScore + 1]
+ cp [hl]
+ jr c, .not_high_score
+ jr nz, .high_score
+ dec hl
+ ld a, [wSurfingMinigameTotalScore]
+ cp [hl]
+ jr c, .not_high_score
+ jr nz, .high_score
+.not_high_score
+ call WaitForSoundToFinish
+ ldpikacry e, PikachuCry28
+ call SurfingMinigame_PlayPikaCryIfSurfingPikaInParty
+ and a
+ ret
+
+.high_score
+ ld a, [wSurfingMinigameTotalScore]
+ ld [wSurfingMinigameHiScore], a
+ ld a, [wSurfingMinigameTotalScore + 1]
+ ld [wSurfingMinigameHiScore + 1], a
+ call WaitForSoundToFinish
+ ldpikacry e, PikachuCry34
+ call SurfingMinigame_PlayPikaCryIfSurfingPikaInParty
+ ld a, SFX_GET_ITEM2_4_2
+ call PlaySound
+ scf
+ ret
+
+SurfingMinigame_PlayPikaCryIfSurfingPikaInParty:
+ push de
+ callfar IsSurfingPikachuInThePlayersParty
+ pop de
+ ret nc
+ callfar PlayPikachuSoundClip
+ ret
+
+SurfingMinigame_IncreaseRadnessMeter:
+ ld a, [wSurfingMinigameRadnessMeter]
+ inc a
+ cp $4
+ jr c, .cap
+ ld a, $3
+.cap
+ ld [wSurfingMinigameRadnessMeter], a
+ ret
+
+SurfingMinigame_CalculateAndAddRadnessFromStunt:
+ ; Compute the amount of radness points from the
+ ; current trick based on the number of
+ ; consecutive flips
+ ; Single flip: +0050
+ ; 2 of the same flip: +0150
+ ; 3 or more of the same flip: +0350
+ ; 2 different flips: +0180
+ ; 3 or more different flips: +0500
+ ld a, [wSurfingMinigameRadnessMeter]
+ and a
+ ret z
+ ld a, [wSurfingMinigameTrickFlags]
+ and $3
+ cp $3 ; did a combination of front and back flips
+ jr z, .mixed_chain
+ ld a, [wSurfingMinigameRadnessMeter]
+ ld d, a
+ ld e, $1
+ ld a, $0
+.get_amount_of_radness
+ add e
+ sla e
+ dec d
+ jr nz, .get_amount_of_radness
+.add_radness_50_at_a_time
+ push af
+ ld e, $50
+ call SurfingMinigame_AddRadness
+ pop af
+ dec a
+ jr nz, .add_radness_50_at_a_time
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld a, [hl]
+ sub $10
+ ld d, a
+ ld hl, ANIM_OBJ_X_COORD
+ add hl, bc
+ ld e, [hl]
+ ld a, [wSurfingMinigameRadnessMeter]
+ add $3
+ push bc
+ call SpawnAnimatedObject
+ pop bc
+ ret
+
+.mixed_chain
+ ld a, [wSurfingMinigameRadnessMeter]
+ cp $3
+ jr c, .add_180_radness_points
+ ld a, 10
+.add_500_radness_50_at_a_time
+ push af
+ ld e, $50
+ call SurfingMinigame_AddRadness
+ pop af
+ dec a
+ jr nz, .add_500_radness_50_at_a_time
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld a, [hl]
+ sub $10
+ ld d, a
+ ld hl, ANIM_OBJ_X_COORD
+ add hl, bc
+ ld e, [hl]
+ ld a, $9
+ push bc
+ call SpawnAnimatedObject
+ pop bc
+ ret
+
+.add_180_radness_points
+ ld e, $50
+ call SurfingMinigame_AddRadness
+ ld e, $50
+ call SurfingMinigame_AddRadness
+ ld e, $50
+ call SurfingMinigame_AddRadness
+ ld e, $30
+ call SurfingMinigame_AddRadness
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld a, [hl]
+ sub $10
+ ld d, a
+ ld hl, ANIM_OBJ_X_COORD
+ add hl, bc
+ ld e, [hl]
+ ld a, $8
+ push bc
+ call SpawnAnimatedObject
+ pop bc
+ ret
+
+SurfingMinigame_AddRadness:
+ ld a, [wSurfingMinigameRadnessScore]
+ add e
+ daa
+ ld [wSurfingMinigameRadnessScore], a
+ ld a, [wSurfingMinigameRadnessScore + 1]
+ adc $0
+ daa
+ ld [wSurfingMinigameRadnessScore + 1], a
+ ret nc
+ ld a, $99
+ ld [wSurfingMinigameRadnessScore], a
+ ld [wSurfingMinigameRadnessScore + 1], a
+ ret
+
+Func_f8c97:
+ ld a, $a0
+ ld [wSurfingMinigameXOffset], a
+ ldh a, [hSCX]
+ ld h, a
+ ld a, [wSurfingMinigameSCX]
+ ld l, a
+ ld de, $900
+ add hl, de
+ ld a, l
+ ld [wSurfingMinigameSCX], a
+ ld a, h
+ ldh [hSCX], a
+ jr SurfingMinigame_GenerateBGMap
+
+SurfingMinigame_ScrollAndGenerateBGMap:
+ ld a, $a0
+ ld [wSurfingMinigameXOffset], a
+ ldh a, [hSCX]
+ ld h, a
+ ld a, [wSurfingMinigameSCX]
+ ld l, a
+ ld de, $180
+ add hl, de
+ ld a, l
+ ld [wSurfingMinigameSCX], a
+ ld a, h
+ ldh [hSCX], a
+SurfingMinigame_GenerateBGMap:
+ ld hl, wSurfingMinigameSCX + 1
+ ldh a, [hSCX]
+ cp [hl]
+ ret z
+ ld [hl], a
+ and $f0
+ ld hl, wSurfingMinigameSCX + 2
+ cp [hl]
+ ret z
+ ld [hl], a
+ call SurfingMinigame_GetWaveDataPointers
+ ; b and c contain the height of the next wave to appear
+ ; on screen, in number of pixels from the top of the screen
+ ld a, b
+ ld [wSurfingMinigameWaveHeightBuffer], a
+ ld a, c
+ ld [wSurfingMinigameWaveHeightBuffer + 1], a
+ push de
+ ld hl, wSurfingMinigameWaveHeight
+ ld de, wSurfingMinigameWaveHeight + 2
+ ld c, SCREEN_WIDTH - 2
+.copy_loop
+ ld a, [de]
+ inc de
+ ld [hli], a
+ dec c
+ jr nz, .copy_loop
+ ld a, [wSurfingMinigameWaveHeightBuffer]
+ ld [hli], a
+ ld a, [wSurfingMinigameWaveHeightBuffer + 1]
+ ld [hl], a
+ pop de
+ ld hl, wRedrawRowOrColumnSrcTiles
+ ld c, $8
+.loop
+ ld a, [de]
+ call .CopyRedrawSrcTiles
+ inc de
+ dec c
+ jr nz, .loop
+ ld a, [wSurfingMinigameXOffset]
+ ld e, a
+ ldh a, [hSCX]
+ add e
+ and $f0
+ srl a
+ srl a
+ srl a
+ ld e, a
+ ld d, $0
+ ld hl, vBGMap0
+ add hl, de
+ ld a, l
+ ldh [hRedrawRowOrColumnDest], a
+ ld a, h
+ ldh [hRedrawRowOrColumnDest + 1], a
+ ld a, $1
+ ldh [hRedrawRowOrColumnMode], a
+ ret
+
+.CopyRedrawSrcTiles:
+ push de
+ push hl
+ ld l, a
+ ld h, $0
+ ld de, Unkn_f96e5
+ add hl, hl
+ add hl, hl
+ add hl, de
+ ld e, l
+ ld d, h
+ pop hl
+ ld a, [de]
+ inc de
+ ld [hli], a
+ ld a, [de]
+ inc de
+ ld [hli], a
+ ld a, [de]
+ inc de
+ ld [hli], a
+ ld a, [de]
+ inc de
+ ld [hli], a
+ pop de
+ ret
+
+SurfingMinigame_GetWaveDataPointers:
+ ld a, [wSurfingMinigameWaveFunctionNumber]
+ ld e, a
+ ld d, $0
+ ld hl, Jumptable_f8d53
+ add hl, de
+ add hl, de
+ ld a, [hli]
+ ld h, [hl]
+ ld l, a
+ jp hl
+
+Jumptable_f8d53:
+ dw SurfingMinigameWaveFunction_NoWave ; 00
+
+ dw Func_f8f28 ; 01
+ dw Func_f8f31 ; 02
+ dw Func_f8f3a ; 03
+ dw Func_f8f43 ; 04
+ dw Func_f8e7d ; 05
+ dw Func_f8f4c ; 06
+ dw Func_f8f55 ; 07
+ dw Func_f8f5e ; 08
+ dw Func_f8e7d ; 09
+ dw Func_f8e7d ; 0a
+ dw Func_f8e7d ; 0b
+ dw Func_f8e7d ; 0c
+ dw Func_f8f94 ; 0d
+
+ dw Func_f8ec5 ; 0e
+ dw Func_f8ece ; 0f
+ dw Func_f8ed7 ; 10
+ dw Func_f8ee0 ; 11
+ dw Func_f8ee9 ; 12
+ dw Func_f8ef2 ; 13
+ dw Func_f8e7d ; 14
+ dw Func_f8e7d ; 15
+ dw Func_f8e7d ; 16
+ dw Func_f8e7d ; 17
+ dw Func_f8e7d ; 18
+ dw Func_f8f94 ; 19
+
+ dw Func_f8efb ; 1a
+ dw Func_f8f04 ; 1b
+ dw Func_f8f0d ; 1c
+ dw Func_f8f16 ; 1d
+ dw Func_f8f1f ; 1e
+ dw Func_f8efb ; 1f
+ dw Func_f8f04 ; 20
+ dw Func_f8f0d ; 21
+ dw Func_f8f16 ; 22
+ dw Func_f8f1f ; 23
+ dw Func_f8e7d ; 24
+ dw Func_f8e7d ; 25
+ dw Func_f8e7d ; 26
+ dw Func_f8e7d ; 27
+ dw Func_f8f94 ; 28
+
+ dw Func_f8f28 ; 29
+ dw Func_f8f31 ; 2a
+ dw Func_f8f3a ; 2b
+ dw Func_f8f43 ; 2c
+ dw Func_f8e7d ; 2d
+ dw Func_f8e7d ; 2e
+ dw Func_f8e7d ; 2f
+ dw Func_f8e7d ; 30
+ dw Func_f8f94 ; 31
+
+ dw Func_f8f4c ; 32
+ dw Func_f8f55 ; 33
+ dw Func_f8f5e ; 34
+ dw Func_f8f4c ; 35
+ dw Func_f8f55 ; 36
+ dw Func_f8f5e ; 37
+ dw Func_f8f4c ; 38
+ dw Func_f8f55 ; 39
+ dw Func_f8f5e ; 3a
+ dw Func_f8e7d ; 3b
+ dw Func_f8e7d ; 3c
+ dw Func_f8e7d ; 3d
+ dw Func_f8e7d ; 3e
+ dw Func_f8f94 ; 3f
+
+ dw Func_f8f67 ; 40
+ dw Func_f8f70 ; 41
+ dw Func_f8efb ; 42
+ dw Func_f8f04 ; 43
+ dw Func_f8f0d ; 44
+ dw Func_f8f16 ; 45
+ dw Func_f8f1f ; 46
+ dw Func_f8f67 ; 47
+ dw Func_f8f70 ; 48
+ dw Func_f8e7d ; 49
+ dw Func_f8e7d ; 4a
+ dw Func_f8e7d ; 4b
+ dw Func_f8f94 ; 4c
+
+ dw Func_f8ec5 ; 4d
+ dw Func_f8ece ; 4e
+ dw Func_f8ed7 ; 4f
+ dw Func_f8ee0 ; 50
+ dw Func_f8ee9 ; 51
+ dw Func_f8ef2 ; 52
+ dw Func_f8e7d ; 53
+ dw Func_f8f67 ; 54
+ dw Func_f8f70 ; 55
+ dw Func_f8f67 ; 56
+ dw Func_f8f70 ; 57
+ dw Func_f8e7d ; 58
+ dw Func_f8e7d ; 59
+ dw Func_f8e7d ; 5a
+ dw Func_f8f94 ; 5b
+
+ dw Func_f8efb ; 5c
+ dw Func_f8f04 ; 5d
+ dw Func_f8f0d ; 5e
+ dw Func_f8f16 ; 5f
+ dw Func_f8f1f ; 60
+ dw Func_f8f28 ; 61
+ dw Func_f8f31 ; 62
+ dw Func_f8f3a ; 63
+ dw Func_f8f43 ; 64
+ dw Func_f8e7d ; 65
+ dw Func_f8e7d ; 66
+ dw Func_f8e7d ; 67
+ dw Func_f8e7d ; 68
+ dw Func_f8f94 ; 69
+
+ dw Func_f8e86 ; 6a
+ dw Func_f8e8f ; 6b
+ dw Func_f8e98 ; 6c
+ dw Func_f8ea1 ; 6d
+ dw Func_f8eaa ; 6e
+ dw Func_f8eb3 ; 6f
+ dw Func_f8ebc ; 70
+ dw Func_f8f9d ; 71
+
+ dw Func_f8e7d ; 72
+ dw Func_f8f79 ; 73
+ dw Func_f8f82 ; 74
+ dw Func_f8f82 ; 75
+ dw Func_f8f82 ; 76
+ dw Func_f8f82 ; 77
+ dw Func_f8f82 ; 78
+ dw Func_f8f82 ; 79
+ dw Func_f8f82 ; 7a
+ dw Func_f8f8b ; 7b
+
+SurfingMinigameWaveFunction_NoWave:
+ ld a, [wc5e5]
+ cp $16
+ jr c, .check_param
+ jr z, .big_kahuna
+ jr nc, .got_wave
+.big_kahuna
+ ld a, $6a
+ jr .got_next_fn
+
+.check_param
+ ld a, [wc5d5]
+ and a
+ jr z, .got_wave
+ dec a
+ and $7
+ ld e, a
+ ld d, $0
+ ld hl, Unkn_f8e75
+ add hl, de
+ ld a, [hl]
+.got_next_fn
+ ld [wSurfingMinigameWaveFunctionNumber], a
+.got_wave
+ lb bc, $74, $74
+ ld de, Unkn_f973d
+ ret
+
+Unkn_f8e75:
+ db $01,$0e,$1a,$29,$32,$40,$4d,$5c
+
+Func_f8e7d:
+ lb bc, $74, $74
+ ld de, Unkn_f973d
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8e86:
+ lb bc, $74, $6c
+ ld de, Unkn_f9745
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8e8f:
+ lb bc, $64, $5c
+ ld de, Unkn_f974d
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8e98:
+ lb bc, $54, $4c
+ ld de, Unkn_f9755
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8ea1:
+ lb bc, $44, $44
+ ld de, Unkn_f975d
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8eaa:
+ lb bc, $44, $4c
+ ld de, Unkn_f9765
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8eb3:
+ lb bc, $54, $5c
+ ld de, Unkn_f976d
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8ebc:
+ lb bc, $64, $6c
+ ld de, Unkn_f9775
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8ec5:
+ lb bc, $74, $6c
+ ld de, Unkn_f977d
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8ece:
+ lb bc, $64, $5c
+ ld de, Unkn_f9785
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8ed7:
+ lb bc, $54, $4c
+ ld de, Unkn_f978d
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8ee0:
+ lb bc, $4c, $4c
+ ld de, Unkn_f9795
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8ee9:
+ lb bc, $54, $5c
+ ld de, Unkn_f979d
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8ef2:
+ lb bc, $64, $6c
+ ld de, Unkn_f97a5
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8efb:
+ lb bc, $74, $6c
+ ld de, Unkn_f97ad
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f04:
+ lb bc, $64, $5c
+ ld de, Unkn_f97b5
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f0d:
+ lb bc, $54, $54
+ ld de, Unkn_f97bd
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f16:
+ lb bc, $54, $5c
+ ld de, Unkn_f97c5
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f1f:
+ lb bc, $64, $6c
+ ld de, Unkn_f97cd
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f28:
+ lb bc, $74, $6c
+ ld de, Unkn_f97d5
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f31:
+ lb bc, $64, $5c
+ ld de, Unkn_f97dd
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f3a:
+ lb bc, $5c, $5c
+ ld de, Unkn_f97e5
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f43:
+ lb bc, $64, $6c
+ ld de, Unkn_f97ed
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f4c:
+ lb bc, $74, $6c
+ ld de, Unkn_f97f5
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f55:
+ lb bc, $64, $64
+ ld de, Unkn_f97fd
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f5e:
+ lb bc, $64, $6c
+ ld de, Unkn_f9805
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f67:
+ lb bc, $74, $6c
+ ld de, Unkn_f980d
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f70:
+ lb bc, $6c, $6c
+ ld de, Unkn_f9815
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f79:
+ lb bc, $74, $74
+ ld de, Unkn_f981d
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f82:
+ lb bc, $74, $74
+ ld de, Unkn_f9825
+ jp SurfingMinigameWaveFunction_GoToNextWaveFunction
+
+Func_f8f8b:
+ lb bc, $74, $74
+ ld de, Unkn_f9825
+ jp SurfingMinigameWaveFunction_ResetWaveFunction
+
+Func_f8f94:
+ lb bc, $74, $74
+ ld de, Unkn_f973d
+ jp SurfingMinigameWaveFunction_ResetWaveFunction
+
+Func_f8f9d:
+ lb bc, $74, $74
+ ld de, Unkn_f973d
+ ret
+
+Func_f8fa4: ; unused
+ inc a
+ ld [wSurfingMinigameWaveFunctionNumber], a
+ ret
+
+SurfingMinigameWaveFunction_GoToNextWaveFunction:
+ ld hl, wSurfingMinigameWaveFunctionNumber
+ inc [hl]
+ ret
+
+SurfingMinigameWaveFunction_ResetWaveFunction:
+ xor a
+ ld [wSurfingMinigameWaveFunctionNumber], a
+ ret
+
+SurfingPikachuMinigameIntro:
+ call SurfingPikachu_ClearTileMap
+ call ClearSprites
+ call DisableLCD
+ xor a
+ ldh [hAutoBGTransferEnabled], a
+ call ClearObjectAnimationBuffers
+ ld hl, SurfingPikachu1Graphics3
+ ld de, $8800
+ ld bc, $900
+ ld a, BANK(SurfingPikachu1Graphics3)
+ call FarCopyData
+ ld a, LOW(SurfingPikachuSpawnStateDataPointer)
+ ld [wAnimatedObjectSpawnStateDataPointer], a
+ ld a, HIGH(SurfingPikachuSpawnStateDataPointer)
+ ld [wAnimatedObjectSpawnStateDataPointer + 1], a
+ ld a, LOW(SurfingPikachuObjectJumptable)
+ ld [wAnimatedObjectJumptablePointer], a
+ ld a, HIGH(SurfingPikachuObjectJumptable)
+ ld [wAnimatedObjectJumptablePointer + 1], a
+ ld a, LOW(SurfingPikachuOAMData)
+ ld [wAnimatedObjectOAMDataPointer], a
+ ld a, HIGH(SurfingPikachuOAMData)
+ ld [wAnimatedObjectOAMDataPointer + 1], a
+ ld a, LOW(SurfingPikachuFrames)
+ ld [wAnimatedObjectFramesDataPointer], a
+ ld a, HIGH(SurfingPikachuFrames)
+ ld [wAnimatedObjectFramesDataPointer + 1], a
+ ld a, $c
+ lb de, $74, $58
+ call SpawnAnimatedObject
+ call DrawSurfingPikachuMinigameIntroBackground
+ xor a
+ ldh [hSCX], a
+ ldh [hSCY], a
+ ld a, $90
+ ldh [hWY], a
+ ld b, $f
+ call RunPaletteCommand
+ ld a, $e3
+ ldh [rLCDC], a
+ ld a, $1
+ ldh [hAutoBGTransferEnabled], a
+ call DelayFrame
+ call DelayFrame
+ call DelayFrame
+ call SurfingPikachuMinigame_SetBGPals
+ ld a, $e4
+ ldh [rOBP0], a
+ ld a, $e0
+ ldh [rOBP1], a
+ call UpdateGBCPal_OBP0
+ call UpdateGBCPal_OBP1
+ call DelayFrame
+ ld a, MUSIC_SURFING_PIKACHU
+ ld c, BANK(Music_SurfingPikachu)
+ call PlayMusic
+ xor a
+ ld [wSurfingMinigameIntroAnimationFinished], a
+.loop
+ ld a, [wSurfingMinigameIntroAnimationFinished]
+ and a
+ ret nz
+ ld a, $0
+ ld [wCurrentAnimatedObjectOAMBufferOffset], a
+ call RunObjectAnimations
+ call DelayFrame
+ jr .loop
+
+DrawSurfingPikachuMinigameIntroBackground:
+ ld hl, wTileMap
+ ld bc, SCREEN_WIDTH * SCREEN_HEIGHT
+ ld a, $ff
+ call FillMemory
+ ld hl, Tilemap_f90bc
+ decoord 0, 6
+ ld bc, 12 * SCREEN_WIDTH
+ call CopyData
+ ld de, Tilemap_f91c8
+ hlcoord 4, 0
+ lb bc, 6, 12
+ call .CopyBox
+ hlcoord 3, 7
+ lb bc, 3, 15
+ call .FillBoxWithFF
+ ld hl, Tilemap_f91ac
+ decoord 3, 7
+ ld bc, 15
+ call CopyData
+ ld hl, Tilemap_f91bb
+ decoord 4, 9
+ ld bc, 13
+ call CopyData
+ ret
+
+.CopyBox:
+.copy_row
+ push bc
+ push hl
+.copy_col
+ ld a, [de]
+ inc de
+ ld [hli], a
+ dec c
+ jr nz, .copy_col
+ ld bc, SCREEN_WIDTH
+ pop hl
+ add hl, bc
+ pop bc
+ dec b
+ jr nz, .copy_row
+ ret
+
+.FillBoxWithFF:
+.fill_row
+ push bc
+ push hl
+.fill_col
+ ld [hl], $ff
+ inc hl
+ dec c
+ jr nz, .fill_col
+ pop hl
+ ld bc, SCREEN_WIDTH
+ add hl, bc
+ pop bc
+ dec b
+ jr nz, .fill_row
+ ret
+
+Tilemap_f90bc: INCBIN "gfx/surfing_pikachu/unknown_f90bc.map"
+Tilemap_f91ac: INCBIN "gfx/surfing_pikachu/unknown_f91ac.map"
+Tilemap_f91bb: INCBIN "gfx/surfing_pikachu/unknown_f91bb.map"
+Tilemap_f91c8: INCBIN "gfx/surfing_pikachu/unknown_f91c8.map"
+
+SurfingMinigame_UpdateLYOverrides:
+ ld hl, wLYOverrides + $10
+ ld de, wLYOverrides + $11
+ ld c, $80
+ ld a, [hl]
+ push af
+.loop
+ ld a, [de]
+ inc de
+ ld [hli], a
+ dec c
+ jr nz, .loop
+ pop af
+ ld [hl], a
+ ret
+
+SurfingMinigame_InitScanlineOverrides:
+ ld hl, wLYOverrides
+ ld bc, wLYOverridesEnd - wLYOverrides
+ ld de, $0
+.loop
+ ld a, e
+ and $1f
+ ld e, a
+ push hl
+ ld hl, SurfingMinigame_LYOverridesInitialSineWave
+ add hl, de
+ ld a, [hl]
+ pop hl
+ ld [hli], a
+ inc e
+ dec bc
+ ld a, c
+ or b
+ jr nz, .loop
+ ret
+
+SurfingPikachu_GetJoypad_3FrameBuffer:
+ call Joypad
+ ldh a, [hFrameCounter]
+ and a
+ jr nz, .delayed
+ ldh a, [hJoyHeld]
+ ldh [hJoy5], a
+ ld a, $2
+ ldh [hFrameCounter], a
+ ret
+
+.delayed
+ xor a
+ ldh [hJoy5], a
+ ret
+
+SurfingPikachuMinigame_BlankPals:
+ xor a
+ ldh [rBGP], a
+ ldh [rOBP0], a
+ ldh [rOBP1], a
+ call UpdateGBCPal_BGP
+ call UpdateGBCPal_OBP0
+ call UpdateGBCPal_OBP1
+ ret
+
+SurfingPikachuMinigame_NormalPals:
+ ld a, $e4
+ ldh [rBGP], a
+ ldh [rOBP0], a
+ ld a, $e0
+ ldh [rOBP1], a
+ call UpdateGBCPal_BGP
+ call UpdateGBCPal_OBP0
+ call UpdateGBCPal_OBP1
+ ret
+
+SurfingPikachu_ClearTileMap:
+ ld hl, wTileMap
+ ld bc, SCREEN_WIDTH * SCREEN_HEIGHT
+ xor a
+ call FillMemory
+ ret
+
+Func_f9284:
+ xor a
+ ld [wc5ed], a
+ ld [wc5ee], a
+ ret
+
+SurfingMinigame_UpdatePikachuHeight:
+ ld a, [wc5ed]
+ and a
+ jr nz, .positive
+ ld a, [wc5ec]
+ ld d, a
+ ld a, [wc5ee]
+ or d
+ jr z, .done
+ ld a, [wc5ee]
+ ld e, a
+ ld hl, -$80
+ add hl, de
+ ld a, l
+ ld [wc5ee], a
+ ld a, h
+ ld [wc5ec], a
+
+ ; -(4 * a ** 2)
+ ld e, a
+ ld d, $0
+ call SurfingMinigame_NTimesDE
+ ld e, l
+ ld d, h
+ ld a, $4
+ call SurfingMinigame_NTimesDE
+ ld a, l
+ xor $ff
+ inc a
+ ld l, a
+ ld a, h
+ xor $ff
+ ld h, a
+
+ push hl
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld d, [hl]
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld e, [hl]
+ pop hl
+
+ add hl, de
+ ld e, l
+ ld d, h
+
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld [hl], d
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld [hl], e
+ and a
+ ret
+
+.done
+ ld a, $1
+ ld [wc5ed], a
+ and a
+ ret
+
+.positive
+ ld a, [wSurfingMinigamePikachuObjectHeight]
+ ld e, a
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld a, [hl]
+ cp $90
+ jr nc, .okay
+ cp e
+ jr nc, .reset
+.okay
+ ld a, [wc5ec]
+ ld d, a
+ ld a, [wc5ee]
+ ld e, a
+ ld hl, $80
+ add hl, de
+ ld a, l
+ ld [wc5ee], a
+ ld a, h
+ ld [wc5ec], a
+
+ ; 4 * a ** 2
+ ld e, a
+ ld d, $0
+ call SurfingMinigame_NTimesDE
+ ld e, l
+ ld d, h
+ ld a, $4
+ call SurfingMinigame_NTimesDE
+
+ push hl
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld d, [hl]
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld e, [hl]
+ pop hl
+
+ add hl, de
+ ld e, l
+ ld d, h
+
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld [hl], d
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld [hl], e
+ and a
+ ret
+
+.reset
+ ld hl, ANIM_OBJ_Y_COORD
+ add hl, bc
+ ld a, [wSurfingMinigamePikachuObjectHeight]
+ ld [hl], a
+ ld hl, ANIM_OBJ_FIELD_C
+ add hl, bc
+ ld [hl], $0
+ scf
+ ret
+
+SurfingMinigame_NTimesDE:
+ ld hl, $0
+.loop
+ srl a
+ jr nc, .no_add
+ add hl, de
+.no_add
+ sla e
+ rl d
+ and a
+ jr nz, .loop
+ ret
+
+SurfingPikachu_PlaceBCDNumber:
+ ld c, a
+ swap a
+ and $f
+ add $d0
+ ld [hli], a
+ ld a, c
+ and $f
+ add $d0
+ ld [hl], a
+ dec de
+ ret
+
+SurfingPikachu_Cosine: ; cosine
+ add $10
+SurfingPikachu_Sine: ; sine
+ and $3f
+ cp $20
+ jr nc, .positive
+ call .GetSine
+ ld a, h
+ ret
+
+.positive
+ and $1f
+ call .GetSine
+ ld a, h
+ xor $ff
+ inc a
+ ret
+
+.GetSine:
+ ld e, a
+ ld a, d
+ ld d, $0
+ ld hl, .SineWave
+ add hl, de
+ add hl, de
+ ld e, [hl]
+ inc hl
+ ld d, [hl]
+ ld hl, $0
+.loop
+ srl a
+ jr nc, .no_add
+ add hl, de
+.no_add
+ sla e
+ rl d
+ and a
+ jr nz, .loop
+ ret
+
+.SineWave:
+ sine_wave $100
+
+SurfingPikachuSpawnStateDataPointer:
+ db $00, $00, $00 ; 0
+ db $04, $01, $00 ; 1
+ db $11, $02, $00 ; 2
+ db $12, $02, $00 ; 3
+ db $15, $00, $00 ; 4
+ db $16, $00, $00 ; 5
+ db $17, $00, $00 ; 6
+ db $18, $00, $00 ; 7
+ db $19, $00, $00 ; 8
+ db $1a, $00, $00 ; 9
+ db $14, $00, $00 ; a
+ db $13, $03, $00 ; b
+ db $1b, $04, $00 ; c
+
+SurfingPikachuObjectJumptable:
+ dw SurfingMinigameAnimatedObjectFn_nop ; 0
+ dw SurfingMinigameAnimatedObjectFn_Pikachu ; 1
+ dw Func_f87fb ; 2
+ dw SurfingMinigameAnimatedObjectFn_FlippingPika ; 3
+ dw SurfingMinigameAnimatedObjectFn_IntroAnimationPikachu ; 4
+
+SurfingMinigameAnimatedObjectFn_nop:
+ ret
+
+INCLUDE "data/sprite_anims/surfing_pikachu_frames.asm"
+INCLUDE "data/sprite_anims/surfing_pikachu_oam.asm"
+
+SurfingMinigame_LYOverridesInitialSineWave:
+; a sine wave with amplitude 2
+ db 0, 0, 0, 1, 1, 1, 1, 2
+ db 2, 2, 1, 1, 1, 1, 0, 0
+ db 0, 0, 0, -1, -1, -1, -1, -2
+ db -2, -2, -1, -1, -1, -1, 0, 0
+
+Unkn_f96e5:
+ db $00, $00, $00, $00 ; 00
+ db $0b, $0b, $0b, $0b ; 01
+ db $0b, $02, $02, $06 ; 02
+ db $03, $0b, $07, $03 ; 03
+ db $06, $06, $06, $06 ; 04
+ db $07, $07, $07, $07 ; 05
+ db $06, $04, $04, $08 ; 06
+ db $05, $07, $08, $05 ; 07
+ db $0b, $0b, $11, $12 ; 08
+ db $0b, $0b, $13, $03 ; 09
+ db $14, $12, $04, $08 ; 0a
+ db $13, $07, $08, $05 ; 0b
+ db $06, $14, $06, $14 ; 0c
+ db $13, $07, $13, $07 ; 0d
+ db $08, $08, $08, $08 ; 0e
+ db $14, $12, $14, $12 ; 0f
+ db $0b, $11, $02, $14 ; 10
+ db $06, $14, $06, $14 ; 11
+ db $0c, $0c, $0d, $0d ; 12
+ db $0d, $0d, $0d, $0d ; 13
+ db $0e, $0f, $10, $0b ; 14
+ db $12, $13, $12, $13 ; 15
+
+Unkn_f973d:
+ db $00, $00, $00, $01, $01, $01, $01, $01
+Unkn_f9745:
+ db $00, $00, $00, $01, $01, $02, $04, $06
+Unkn_f974d:
+ db $00, $00, $00, $01, $02, $04, $06, $0e
+Unkn_f9755:
+ db $00, $00, $00, $10, $11, $06, $0e, $0e
+Unkn_f975d:
+ db $00, $00, $00, $15, $15, $0e, $0e, $0e
+Unkn_f9765:
+ db $00, $00, $00, $03, $05, $07, $0e, $0e
+Unkn_f976d:
+ db $00, $00, $00, $01, $03, $05, $07, $0e
+Unkn_f9775:
+ db $00, $00, $00, $01, $01, $03, $05, $07
+Unkn_f977d:
+ db $00, $00, $00, $01, $01, $02, $04, $06
+Unkn_f9785:
+ db $00, $00, $00, $01, $02, $04, $06, $0e
+Unkn_f978d:
+ db $00, $00, $00, $08, $0f, $0a, $0e, $0e
+Unkn_f9795:
+ db $00, $00, $00, $09, $0d, $0b, $0e, $0e
+Unkn_f979d:
+ db $00, $00, $00, $01, $03, $05, $07, $0e
+Unkn_f97a5:
+ db $00, $00, $00, $01, $01, $03, $05, $07
+Unkn_f97ad:
+ db $00, $00, $00, $01, $01, $02, $04, $06
+Unkn_f97b5:
+ db $00, $00, $00, $01, $10, $11, $06, $0e
+Unkn_f97bd:
+ db $00, $00, $00, $01, $15, $15, $0e, $0e
+Unkn_f97c5:
+ db $00, $00, $00, $01, $03, $05, $07, $0e
+Unkn_f97cd:
+ db $00, $00, $00, $01, $01, $03, $05, $07
+Unkn_f97d5:
+ db $00, $00, $00, $01, $01, $02, $04, $06
+Unkn_f97dd:
+ db $00, $00, $00, $01, $08, $0f, $0a, $0e
+Unkn_f97e5:
+ db $00, $00, $00, $01, $09, $0d, $0b, $0e
+Unkn_f97ed:
+ db $00, $00, $00, $01, $01, $03, $05, $07
+Unkn_f97f5:
+ db $00, $00, $00, $01, $01, $10, $11, $06
+Unkn_f97fd:
+ db $00, $00, $00, $01, $01, $15, $15, $0e
+Unkn_f9805:
+ db $00, $00, $00, $01, $01, $03, $05, $07
+Unkn_f980d:
+ db $00, $00, $00, $01, $01, $08, $0f, $0a
+Unkn_f9815:
+ db $00, $00, $00, $01, $01, $09, $0d, $0b
+Unkn_f981d:
+ db $00, $00, $00, $14, $14, $14, $14, $14
+Unkn_f9825:
+ db $00, $00, $00, $12, $13, $13, $13, $13
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-01 16:49:13 +0000