ref: b6a7e5e9cf20e7924f6cf427c66e9aeb42fa77f3
dir: /engine/trade.asm/
InternalClockTradeAnim: ; 410e2 (10:50e2) ; Do the trading animation with the player's gameboy on the left. ; In-game trades and internally clocked link cable trades use this. ld a, [wTradedPlayerMonSpecies] ld [wLeftGBMonSpecies], a ld a, [wTradedEnemyMonSpecies] ld [wRightGBMonSpecies], a ld de, InternalClockTradeFuncSequence jr TradeAnimCommon ExternalClockTradeAnim: ; 410f3 (10:50f3) ; Do the trading animation with the player's gameboy on the right. ; Externally clocked link cable trades use this. ld a, [wTradedEnemyMonSpecies] ld [wLeftGBMonSpecies], a ld a, [wTradedPlayerMonSpecies] ld [wRightGBMonSpecies], a ld de, ExternalClockTradeFuncSequence TradeAnimCommon: ; 41102 (10:5102) ld a, [W_OPTIONS] push af ld a, [hSCY] push af ld a, [hSCX] push af xor a ld [W_OPTIONS], a ld [hSCY], a ld [hSCX], a push de .loop pop de ld a, [de] cp $ff jr z, .done inc de push de ld hl, TradeFuncPointerTable add a ld c, a ld b, $0 add hl, bc ld a, [hli] ld h, [hl] ld l, a ld de, .loop push de jp [hl] ; call trade func, which will return to the top of the loop .done pop af ld [hSCX], a pop af ld [hSCY], a pop af ld [W_OPTIONS], a ret addtradefunc: MACRO \1TradeFunc:: dw \1 ENDM tradefunc: MACRO db (\1TradeFunc - TradeFuncPointerTable) / 2 ENDM ; The functions in the sequences below are executed in order by TradeFuncCommon. ; They are from opposite perspectives. The external clock one makes use of ; Trade_SwapNames to swap the player and enemy names for some functions. InternalClockTradeFuncSequence: ; 41138 (10:5138) tradefunc LoadTradingGFXAndMonNames tradefunc Trade_ShowPlayerMon tradefunc Trade_DrawOpenEndOfLinkCable tradefunc Trade_AnimateBallEnteringLinkCable tradefunc Trade_AnimLeftToRight tradefunc Trade_Delay100 tradefunc Trade_ShowClearedWindow tradefunc PrintTradeWentToText tradefunc PrintTradeForSendsText tradefunc PrintTradeFarewellText tradefunc Trade_AnimRightToLeft tradefunc Trade_ShowClearedWindow tradefunc Trade_DrawOpenEndOfLinkCable tradefunc Trade_ShowEnemyMon tradefunc Trade_Delay100 tradefunc Trade_Cleanup db $FF ExternalClockTradeFuncSequence: ; 41149 (10:5149) tradefunc LoadTradingGFXAndMonNames tradefunc Trade_ShowClearedWindow tradefunc PrintTradeWillTradeText tradefunc PrintTradeFarewellText tradefunc Trade_SwapNames tradefunc Trade_AnimLeftToRight tradefunc Trade_SwapNames tradefunc Trade_ShowClearedWindow tradefunc Trade_DrawOpenEndOfLinkCable tradefunc Trade_ShowEnemyMon tradefunc Trade_SlideTextBoxOffScreen tradefunc Trade_ShowPlayerMon tradefunc Trade_DrawOpenEndOfLinkCable tradefunc Trade_AnimateBallEnteringLinkCable tradefunc Trade_SwapNames tradefunc Trade_AnimRightToLeft tradefunc Trade_SwapNames tradefunc Trade_Delay100 tradefunc Trade_ShowClearedWindow tradefunc PrintTradeWentToText tradefunc Trade_Cleanup db $FF TradeFuncPointerTable: ; 4115f (10:515f) addtradefunc LoadTradingGFXAndMonNames addtradefunc Trade_ShowPlayerMon addtradefunc Trade_DrawOpenEndOfLinkCable addtradefunc Trade_AnimateBallEnteringLinkCable addtradefunc Trade_ShowEnemyMon addtradefunc Trade_AnimLeftToRight addtradefunc Trade_AnimRightToLeft addtradefunc Trade_Delay100 addtradefunc Trade_ShowClearedWindow addtradefunc PrintTradeWentToText addtradefunc PrintTradeForSendsText addtradefunc PrintTradeFarewellText addtradefunc PrintTradeTakeCareText addtradefunc PrintTradeWillTradeText addtradefunc Trade_Cleanup addtradefunc Trade_SlideTextBoxOffScreen addtradefunc Trade_SwapNames Trade_Delay100: ; 41181 (10:5181) ld c, 100 jp DelayFrames Trade_CopyTileMapToVRAM: ; 41186 (10:5186) ld a, $1 ld [H_AUTOBGTRANSFERENABLED], a call Delay3 xor a ld [H_AUTOBGTRANSFERENABLED], a ret Trade_Delay80: ; 41191 (10:5191) ld c, 80 jp DelayFrames Trade_ClearTileMap: ; 41196 (10:5196) coord hl, 0, 0 ld bc, SCREEN_WIDTH * SCREEN_HEIGHT ld a, " " jp FillMemory LoadTradingGFXAndMonNames: ; 411a1 (10:51a1) call Trade_ClearTileMap call DisableLCD ld hl, TradingAnimationGraphics ld de, vChars2 + $310 ld bc, TradingAnimationGraphicsEnd - TradingAnimationGraphics ld a, BANK(TradingAnimationGraphics) call FarCopyData2 ld hl, TradingAnimationGraphics2 ld de, vSprites + $7c0 ld bc, TradingAnimationGraphics2End - TradingAnimationGraphics2 ld a, BANK(TradingAnimationGraphics2) call FarCopyData2 ld hl, vBGMap0 ld bc, $800 ld a, " " call FillMemory call ClearSprites ld a, $ff ld [wUpdateSpritesEnabled], a ld hl, wd730 set 6, [hl] ; turn on instant text printing ld a, [wOnSGB] and a ld a, $e4 ; non-SGB OBP0 jr z, .next ld a, $f0 ; SGB OBP0 .next ld [rOBP0], a call EnableLCD xor a ld [H_AUTOBGTRANSFERENABLED], a ld a, [wTradedPlayerMonSpecies] ld [wd11e], a call GetMonName ld hl, wcd6d ld de, wcf4b ld bc, NAME_LENGTH call CopyData ld a, [wTradedEnemyMonSpecies] ld [wd11e], a jp GetMonName Trade_LoadMonPartySpriteGfx: ; 4120b (10:520b) ld a, %11010000 ld [rOBP1], a jpba LoadMonPartySpriteGfx Trade_SwapNames: ; 41217 (10:5217) ld hl, wPlayerName ld de, wBuffer ld bc, NAME_LENGTH call CopyData ld hl, wLinkEnemyTrainerName ld de, wPlayerName ld bc, NAME_LENGTH call CopyData ld hl, wBuffer ld de, wLinkEnemyTrainerName ld bc, NAME_LENGTH jp CopyData Trade_Cleanup: ; 4123b (10:523b) xor a call LoadGBPal ld hl, wd730 res 6, [hl] ; turn off instant text printing ret Trade_ShowPlayerMon: ; 41245 (10:5245) ld a, %10101011 ld [rLCDC], a ld a, $50 ld [hWY], a ld a, $86 ld [rWX], a ld [hSCX], a xor a ld [H_AUTOBGTRANSFERENABLED], a coord hl, 4, 0 ld b, 6 ld c, 10 call TextBoxBorder call Trade_PrintPlayerMonInfoText ld b, vBGMap0 / $100 call CopyScreenTileBufferToVRAM call ClearScreen ld a, [wTradedPlayerMonSpecies] call Trade_LoadMonSprite ld a, $7e .slideScreenLoop push af call DelayFrame pop af ld [rWX], a ld [hSCX], a dec a dec a and a jr nz, .slideScreenLoop call Trade_Delay80 ld a, TRADE_BALL_POOF_ANIM call Trade_ShowAnimation ld a, TRADE_BALL_DROP_ANIM call Trade_ShowAnimation ; clears mon pic ld a, [wTradedPlayerMonSpecies] call PlayCry xor a ld [H_AUTOBGTRANSFERENABLED], a ret Trade_DrawOpenEndOfLinkCable: ; 41298 (10:5298) call Trade_ClearTileMap ld b, vBGMap0 / $100 call CopyScreenTileBufferToVRAM ld b, SET_PAL_GENERIC call RunPaletteCommand ; This function call is pointless. It just copies blank tiles to VRAM that was ; already filled with blank tiles. ld hl, vBGMap1 + $8c call Trade_CopyCableTilesOffScreen ld a, $a0 ld [hSCX], a call DelayFrame ld a, %10001011 ld [rLCDC], a coord hl, 6, 2 ld b, $7 ; open end of link cable tile ID list index call CopyTileIDsFromList_ZeroBaseTileID call Trade_CopyTileMapToVRAM ld a, SFX_HEAL_HP call PlaySound ld c, 20 .loop ld a, [hSCX] add 4 ld [hSCX], a dec c jr nz, .loop ret Trade_AnimateBallEnteringLinkCable: ; 412d2 (10:52d2) ld a, TRADE_BALL_SHAKE_ANIM call Trade_ShowAnimation ld c, 10 call DelayFrames ld a, %11100100 ld [rOBP0], a xor a ld [wLinkCableAnimBulgeToggle], a ld bc, $2060 .moveBallInsideLinkCableLoop push bc xor a ld de, Trade_BallInsideLinkCableOAM call WriteOAMBlock ld a, [wLinkCableAnimBulgeToggle] xor $1 ld [wLinkCableAnimBulgeToggle], a add $7e ld hl, wOAMBuffer + $02 ld de, 4 ld c, e .cycleLinkCableBulgeTile ld [hl], a add hl, de dec c jr nz, .cycleLinkCableBulgeTile call Delay3 pop bc ld a, c add $4 ld c, a cp $a0 jr nc, .ballSpriteReachedEdgeOfScreen ld a, SFX_TINK call PlaySound jr .moveBallInsideLinkCableLoop .ballSpriteReachedEdgeOfScreen call ClearSprites ld a, $1 ld [H_AUTOBGTRANSFERENABLED], a call ClearScreen ld b, $98 call CopyScreenTileBufferToVRAM call Delay3 xor a ld [H_AUTOBGTRANSFERENABLED], a ret Trade_BallInsideLinkCableOAM: ; 4132e (10:532e) db $7E,$00,$7E,$20 db $7E,$40,$7E,$60 Trade_ShowEnemyMon: ; 41336 (10:5336) ld a, TRADE_BALL_TILT_ANIM call Trade_ShowAnimation call Trade_ShowClearedWindow coord hl, 4, 10 ld b, 6 ld c, 10 call TextBoxBorder call Trade_PrintEnemyMonInfoText call Trade_CopyTileMapToVRAM ld a, $1 ld [H_AUTOBGTRANSFERENABLED], a ld a, [wTradedEnemyMonSpecies] call Trade_LoadMonSprite ld a, TRADE_BALL_POOF_ANIM call Trade_ShowAnimation ld a, $1 ld [H_AUTOBGTRANSFERENABLED], a ld a, [wTradedEnemyMonSpecies] call PlayCry call Trade_Delay100 coord hl, 4, 10 lb bc, 8, 12 call ClearScreenArea jp PrintTradeTakeCareText Trade_AnimLeftToRight: ; 41376 (10:5376) ; Animates the mon moving from the left GB to the right one. call Trade_InitGameboyTransferGfx ld a, $1 ld [wTradedMonMovingRight], a ld a, $e4 ld [rOBP0], a ld a, $54 ld [W_BASECOORDX], a ld a, $1c ld [W_BASECOORDY], a ld a, [wLeftGBMonSpecies] ld [wMonPartySpriteSpecies], a call Trade_WriteCircledMonOAM call Trade_DrawLeftGameboy call Trade_CopyTileMapToVRAM call Trade_DrawCableAcrossScreen ld hl, vBGMap1 + $8c call Trade_CopyCableTilesOffScreen ld b, $6 call Trade_AnimMonMoveHorizontal ld a, $1 ld [H_AUTOBGTRANSFERENABLED], a call Trade_DrawCableAcrossScreen ld b, $4 call Trade_AnimMonMoveHorizontal call Trade_DrawRightGameboy ld b, $6 call Trade_AnimMonMoveHorizontal xor a ld [H_AUTOBGTRANSFERENABLED], a call Trade_AnimMonMoveVertical jp ClearSprites Trade_AnimRightToLeft: ; 413c6 (10:53c6) ; Animates the mon moving from the right GB to the left one. call Trade_InitGameboyTransferGfx xor a ld [wTradedMonMovingRight], a ld a, $64 ld [W_BASECOORDX], a ld a, $44 ld [W_BASECOORDY], a ld a, [wRightGBMonSpecies] ld [wMonPartySpriteSpecies], a call Trade_WriteCircledMonOAM call Trade_DrawRightGameboy call Trade_CopyTileMapToVRAM call Trade_DrawCableAcrossScreen ld hl, vBGMap1 + $94 call Trade_CopyCableTilesOffScreen call Trade_AnimMonMoveVertical ld b, $6 call Trade_AnimMonMoveHorizontal ld a, $1 ld [H_AUTOBGTRANSFERENABLED], a call Trade_DrawCableAcrossScreen ld b, $4 call Trade_AnimMonMoveHorizontal call Trade_DrawLeftGameboy ld b, $6 call Trade_AnimMonMoveHorizontal xor a ld [H_AUTOBGTRANSFERENABLED], a jp ClearSprites Trade_InitGameboyTransferGfx: ; 41411 (10:5411) ; Initialises the graphics for showing a mon moving between gameboys. ld a, $1 ld [H_AUTOBGTRANSFERENABLED], a call ClearScreen xor a ld [H_AUTOBGTRANSFERENABLED], a call Trade_LoadMonPartySpriteGfx call DelayFrame ld a, %10101011 ld [rLCDC], a xor a ld [hSCX], a ld a, $90 ld [hWY], a ret Trade_DrawLeftGameboy: ; 4142d (10:542d) call Trade_ClearTileMap ; draw link cable coord hl, 11, 4 ld a, $5d ld [hli], a ld a, $5e ld c, $8 .loop ld [hli], a dec c jr nz, .loop ; draw gameboy pic coord hl, 5, 3 ld b, $6 call CopyTileIDsFromList_ZeroBaseTileID ; draw text box with player name below gameboy pic coord hl, 4, 12 ld b, 2 ld c, 7 call TextBoxBorder coord hl, 5, 14 ld de, wPlayerName call PlaceString jp DelayFrame Trade_DrawRightGameboy: ; 4145c (10:545c) call Trade_ClearTileMap ; draw horizontal segment of link cable coord hl, 0, 4 ld a, $5e ld c, $e .loop ld [hli], a dec c jr nz, .loop ; draw vertical segment of link cable ld a, $5f ld [hl], a ld de, SCREEN_WIDTH add hl, de ld a, $61 ld [hl], a add hl, de ld [hl], a add hl, de ld [hl], a add hl, de ld [hl], a add hl, de ld a, $60 ld [hld], a ld a, $5d ld [hl], a ; draw gameboy pic coord hl, 7, 8 ld b, $6 call CopyTileIDsFromList_ZeroBaseTileID ; draw text box with enemy name above link cable coord hl, 6, 0 ld b, $2 ld c, $7 call TextBoxBorder coord hl, 7, 2 ld de, wLinkEnemyTrainerName call PlaceString jp DelayFrame Trade_DrawCableAcrossScreen: ; 4149f (10:549f) ; Draws the link cable across the screen. call Trade_ClearTileMap coord hl, 0, 4 ld a, $5e ld c, SCREEN_WIDTH .loop ld [hli], a dec c jr nz, .loop ret Trade_CopyCableTilesOffScreen: ; 414ae (10:54ae) ; This is used to copy the link cable tiles off screen so that the cable ; continues when the screen is scrolled. push hl coord hl, 0, 4 call CopyToRedrawRowOrColumnSrcTiles pop hl ld a, h ld [hRedrawRowOrColumnDest + 1], a ld a, l ld [hRedrawRowOrColumnDest], a ld a, REDRAW_ROW ld [hRedrawRowOrColumnMode], a ld c, 10 jp DelayFrames Trade_AnimMonMoveHorizontal: ; 414c5 (10:54c5) ; Animates the mon going through the link cable horizontally over a distance of ; b 16-pixel units. ld a, [wTradedMonMovingRight] ld e, a ld d, $8 .scrollLoop ld a, e dec a jr z, .movingRight ; moving left ld a, [hSCX] sub $2 jr .next .movingRight ld a, [hSCX] add $2 .next ld [hSCX], a call DelayFrame dec d jr nz, .scrollLoop call Trade_AnimCircledMon dec b jr nz, Trade_AnimMonMoveHorizontal ret Trade_AnimCircledMon: ; 414e8 (10:54e8) ; Cycles between the two animation frames of the mon party sprite, cycles ; between a circle and an oval around the mon sprite, and makes the cable flash. push de push bc push hl ld a, [rBGP] xor $3c ; make link cable flash ld [rBGP], a ld hl, wOAMBuffer + $02 ld de, $4 ld c, $14 .loop ld a, [hl] xor $40 ld [hl], a add hl, de dec c jr nz, .loop pop hl pop bc pop de ret Trade_WriteCircledMonOAM: ; 41505 (10:5505) callba WriteMonPartySpriteOAMBySpecies call Trade_WriteCircleOAM Trade_AddOffsetsToOAMCoords: ; 41510 (10:5510) ld hl, wOAMBuffer ld c, $14 .loop ld a, [W_BASECOORDY] add [hl] ld [hli], a ld a, [W_BASECOORDX] add [hl] ld [hli], a inc hl inc hl dec c jr nz, .loop ret Trade_AnimMonMoveVertical: ; 41525 (10:5525) ; Animates the mon going through the link cable vertically as well as ; horizontally for a bit. The last bit of horizontal movement (when moving ; right) or the first bit of horizontal movement (when moving left) are done ; here instead of Trade_AnimMonMoveHorizontal because this function moves the ; sprite itself rather than scrolling the screen around the sprite. Moving the ; sprite itself is necessary because the vertical segment of the link cable is ; to the right of the screen position that the mon sprite has when ; Trade_AnimMonMoveHorizontal is executing. ld a, [wTradedMonMovingRight] and a jr z, .movingLeft ; moving right lb bc, 4, 0 ; move right call .doAnim lb bc, 0, 10 ; move down jr .doAnim .movingLeft lb bc, 0, -10 ; move up call .doAnim lb bc, -4, 0 ; move left .doAnim ld a, b ld [W_BASECOORDX], a ld a, c ld [W_BASECOORDY], a ld d, $4 .loop call Trade_AddOffsetsToOAMCoords call Trade_AnimCircledMon ld c, 8 call DelayFrames dec d jr nz, .loop ret Trade_WriteCircleOAM: ; 41558 (10:5558) ; Writes the OAM blocks for the circle around the traded mon as it passes ; the link cable. ld hl, Trade_CircleOAMPointers ld c, $4 xor a .loop push bc ld e, [hl] inc hl ld d, [hl] inc hl ld c, [hl] inc hl ld b, [hl] inc hl push hl inc a push af call WriteOAMBlock pop af pop hl pop bc dec c jr nz, .loop ret Trade_CircleOAMPointers: ; 41574 (10:5574) dw Trade_CircleOAM0 db $08,$08 dw Trade_CircleOAM1 db $18,$08 dw Trade_CircleOAM2 db $08,$18 dw Trade_CircleOAM3 db $18,$18 Trade_CircleOAM0: ; 41584 (10:5584) db $38,$10,$39,$10 db $3A,$10,$3B,$10 Trade_CircleOAM1: ; 4158c (10:558c) db $39,$30,$38,$30 db $3B,$30,$3A,$30 Trade_CircleOAM2: ; 41594 (10:5594) db $3A,$50,$3B,$50 db $38,$50,$39,$50 Trade_CircleOAM3: ; 4159c (10:559c) db $3B,$70,$3A,$70 db $39,$70,$38,$70 ; a = species Trade_LoadMonSprite: ; 415a4 (10:55a4) ld [wcf91], a ld [wd0b5], a ld [wWholeScreenPaletteMonSpecies], a ld b, SET_PAL_POKEMON_WHOLE_SCREEN ld c, 0 call RunPaletteCommand ld a, [H_AUTOBGTRANSFERENABLED] xor $1 ld [H_AUTOBGTRANSFERENABLED], a call GetMonHeader coord hl, 7, 2 call LoadFlippedFrontSpriteByMonIndex ld c, 10 jp DelayFrames Trade_ShowClearedWindow: ; 415c8 (10:55c8) ; clears the window and covers the BG entirely with the window ld a, $1 ld [H_AUTOBGTRANSFERENABLED], a call ClearScreen ld a, %11100011 ld [rLCDC], a ld a, $7 ld [rWX], a xor a ld [hWY], a ld a, $90 ld [hSCX], a ret Trade_SlideTextBoxOffScreen: ; 415df (10:55df) ; Slides the window right until it's off screen. The window usually just has ; a text box at the bottom when this is called. However, when this is called ; after Trade_ShowEnemyMon in the external clock sequence, there is a mon pic ; above the text box and it is also scrolled off the screen. ld c, 50 call DelayFrames .loop call DelayFrame ld a, [rWX] inc a inc a ld [rWX], a cp $a1 jr nz, .loop call Trade_ClearTileMap ld c, 10 call DelayFrames ld a, $7 ld [rWX], a ret PrintTradeWentToText: ; 415fe (10:55fe) ld hl, TradeWentToText call PrintText ld c, 200 call DelayFrames jp Trade_SlideTextBoxOffScreen TradeWentToText: ; 4160c (10:560c) TX_FAR _TradeWentToText db "@" PrintTradeForSendsText: ; 41611 (10:5611) ld hl, TradeForText call PrintText call Trade_Delay80 ld hl, TradeSendsText call PrintText jp Trade_Delay80 TradeForText: ; 41623 (10:5623) TX_FAR _TradeForText db "@" TradeSendsText: ; 41628 (10:5628) TX_FAR _TradeSendsText db "@" PrintTradeFarewellText: ; 4162d (10:562d) ld hl, TradeWavesFarewellText call PrintText call Trade_Delay80 ld hl, TradeTransferredText call PrintText call Trade_Delay80 jp Trade_SlideTextBoxOffScreen TradeWavesFarewellText: ; 41642 (10:5642) TX_FAR _TradeWavesFarewellText db "@" TradeTransferredText: ; 41647 (10:5647) TX_FAR _TradeTransferredText db "@" PrintTradeTakeCareText: ; 4164c (10:564c) ld hl, TradeTakeCareText call PrintText jp Trade_Delay80 TradeTakeCareText: ; 41655 (10:5655) TX_FAR _TradeTakeCareText db "@" PrintTradeWillTradeText: ; 4165a (10:565a) ld hl, TradeWillTradeText call PrintText call Trade_Delay80 ld hl, TradeforText call PrintText jp Trade_Delay80 TradeWillTradeText: ; 4166c (10:566c) TX_FAR _TradeWillTradeText db "@" TradeforText: ; 41671 (10:5671) TX_FAR _TradeforText db "@" Trade_ShowAnimation: ; 41676 (10:5676) ld [W_ANIMATIONID], a xor a ld [wAnimationType], a predef_jump MoveAnimation