ref: 7c3a90bf0181127fab4cd98ad4a3173a2984f51e
dir: /engine/in_game_trades.asm/
DoInGameTradeDialogue: ; trigger the trade offer/action specified by wWhichTrade call SaveScreenTilesToBuffer2 ld hl,TradeMons ld a,[wWhichTrade] ld b,a swap a sub b sub b ld c,a ld b,0 add hl,bc ld a,[hli] ld [wInGameTradeGiveMonSpecies],a ld a,[hli] ld [wInGameTradeReceiveMonSpecies],a ld a,[hli] push af ld de,wInGameTradeMonNick ld bc, NAME_LENGTH call CopyData pop af ld l,a ld h,0 ld de,InGameTradeTextPointers add hl,hl add hl,de ld a,[hli] ld [wInGameTradeTextPointerTablePointer],a ld a,[hl] ld [wInGameTradeTextPointerTablePointer + 1],a ld a,[wInGameTradeGiveMonSpecies] ld de,wInGameTradeGiveMonName call InGameTrade_GetMonName ld a,[wInGameTradeReceiveMonSpecies] ld de,wInGameTradeReceiveMonName call InGameTrade_GetMonName ld hl,wCompletedInGameTradeFlags ld a,[wWhichTrade] ld c,a ld b,FLAG_TEST predef FlagActionPredef ld a,c and a ld a,$4 ld [wInGameTradeTextPointerTableIndex],a jr nz,.printText ; if the trade hasn't been done yet xor a ld [wInGameTradeTextPointerTableIndex],a call .printText ld a,$1 ld [wInGameTradeTextPointerTableIndex],a call YesNoChoice ld a,[wCurrentMenuItem] and a jr nz,.printText call InGameTrade_DoTrade jr c,.printText ld hl, TradedForText call PrintText .printText ld hl,wInGameTradeTextPointerTableIndex ld a,[hld] ; wInGameTradeTextPointerTableIndex ld e,a ld d,0 ld a,[hld] ; wInGameTradeTextPointerTablePointer + 1 ld l,[hl] ; wInGameTradeTextPointerTablePointer ld h,a add hl,de add hl,de ld a,[hli] ld h,[hl] ld l,a jp PrintText ; copies name of species a to hl InGameTrade_GetMonName: push de ld [wd11e],a call GetMonName ld hl,wcd6d pop de ld bc, NAME_LENGTH jp CopyData INCLUDE "data/trades.asm" InGameTrade_DoTrade: xor a ; NORMAL_PARTY_MENU ld [wPartyMenuTypeOrMessageID],a dec a ld [wUpdateSpritesEnabled],a call DisplayPartyMenu push af call InGameTrade_RestoreScreen pop af ld a,$1 jp c,.tradeFailed ; jump if the player didn't select a pokemon ld a,[wInGameTradeGiveMonSpecies] ld b,a ld a,[wcf91] cp b ld a,$2 jr nz,.tradeFailed ; jump if the selected mon's species is not the required one ld a,[wWhichPokemon] ld hl,wPartyMon1Level ld bc, wPartyMon2 - wPartyMon1 call AddNTimes ld a,[hl] ld [wCurEnemyLVL],a ld hl,wCompletedInGameTradeFlags ld a,[wWhichTrade] ld c,a ld b,FLAG_SET predef FlagActionPredef ld hl, ConnectCableText call PrintText ld a,[wWhichPokemon] push af ld a,[wCurEnemyLVL] push af call LoadHpBarAndStatusTilePatterns call InGameTrade_PrepareTradeData predef InternalClockTradeAnim pop af ld [wCurEnemyLVL],a pop af ld [wWhichPokemon],a ld a,[wInGameTradeReceiveMonSpecies] ld [wcf91],a xor a ld [wMonDataLocation],a ; not used ld [wRemoveMonFromBox],a call RemovePokemon ld a,$80 ; prevent the player from naming the mon ld [wMonDataLocation],a call AddPartyMon call InGameTrade_CopyDataToReceivedMon callab EvolveTradeMon call ClearScreen call InGameTrade_RestoreScreen callba RedrawMapView and a ld a,$3 jr .tradeSucceeded .tradeFailed scf .tradeSucceeded ld [wInGameTradeTextPointerTableIndex],a ret InGameTrade_RestoreScreen: call GBPalWhiteOutWithDelay3 call RestoreScreenTilesAndReloadTilePatterns call ReloadTilesetTilePatterns call LoadScreenTilesFromBuffer2 call Delay3 call LoadGBPal ld c, 10 call DelayFrames jpba LoadWildData InGameTrade_PrepareTradeData: ld hl, wTradedPlayerMonSpecies ld a, [wInGameTradeGiveMonSpecies] ld [hli], a ; wTradedPlayerMonSpecies ld a, [wInGameTradeReceiveMonSpecies] ld [hl], a ; wTradedEnemyMonSpecies ld hl, wPartyMonOT ld bc, NAME_LENGTH ld a, [wWhichPokemon] call AddNTimes ld de, wTradedPlayerMonOT ld bc, NAME_LENGTH call InGameTrade_CopyData ld hl, InGameTrade_TrainerString ld de, wTradedEnemyMonOT call InGameTrade_CopyData ld de, wLinkEnemyTrainerName call InGameTrade_CopyData ld hl, wPartyMon1OTID ld bc, wPartyMon2 - wPartyMon1 ld a, [wWhichPokemon] call AddNTimes ld de, wTradedPlayerMonOTID ld bc, $2 call InGameTrade_CopyData call Random ld hl, hRandomAdd ld de, wTradedEnemyMonOTID jp CopyData InGameTrade_CopyData: push hl push bc call CopyData pop bc pop hl ret InGameTrade_CopyDataToReceivedMon: ld hl, wPartyMonNicks ld bc, NAME_LENGTH call InGameTrade_GetReceivedMonPointer ld hl, wInGameTradeMonNick ld bc, NAME_LENGTH call CopyData ld hl, wPartyMonOT ld bc, NAME_LENGTH call InGameTrade_GetReceivedMonPointer ld hl, InGameTrade_TrainerString ld bc, NAME_LENGTH call CopyData ld hl, wPartyMon1OTID ld bc, wPartyMon2 - wPartyMon1 call InGameTrade_GetReceivedMonPointer ld hl, wTradedEnemyMonOTID ld bc, $2 jp CopyData ; the received mon's index is (partyCount - 1), ; so this adds bc to hl (partyCount - 1) times and moves the result to de InGameTrade_GetReceivedMonPointer: ld a, [wPartyCount] dec a call AddNTimes ld e, l ld d, h ret InGameTrade_TrainerString: ; "TRAINER@@@@@@@@@@" db $5d, "@@@@@@@@@@" InGameTradeTextPointers: dw TradeTextPointers1 dw TradeTextPointers2 dw TradeTextPointers3 TradeTextPointers1: dw WannaTrade1Text dw NoTrade1Text dw WrongMon1Text dw Thanks1Text dw AfterTrade1Text TradeTextPointers2: dw WannaTrade2Text dw NoTrade2Text dw WrongMon2Text dw Thanks2Text dw AfterTrade2Text TradeTextPointers3: dw WannaTrade3Text dw NoTrade3Text dw WrongMon3Text dw Thanks3Text dw AfterTrade3Text ConnectCableText: TX_FAR _ConnectCableText db "@" TradedForText: TX_FAR _TradedForText TX_SFX_KEY_ITEM TX_DELAY db "@" WannaTrade1Text: TX_FAR _WannaTrade1Text db "@" NoTrade1Text: TX_FAR _NoTrade1Text db "@" WrongMon1Text: TX_FAR _WrongMon1Text db "@" Thanks1Text: TX_FAR _Thanks1Text db "@" AfterTrade1Text: TX_FAR _AfterTrade1Text db "@" WannaTrade2Text: TX_FAR _WannaTrade2Text db "@" NoTrade2Text: TX_FAR _NoTrade2Text db "@" WrongMon2Text: TX_FAR _WrongMon2Text db "@" Thanks2Text: TX_FAR _Thanks2Text db "@" AfterTrade2Text: TX_FAR _AfterTrade2Text db "@" WannaTrade3Text: TX_FAR _WannaTrade3Text db "@" NoTrade3Text: TX_FAR _NoTrade3Text db "@" WrongMon3Text: TX_FAR _WrongMon3Text db "@" Thanks3Text: TX_FAR _Thanks3Text db "@" AfterTrade3Text: TX_FAR _AfterTrade3Text db "@"