mirror of
https://github.com/Ninjdai1/pokeemerald.git
synced 2024-12-27 04:04:17 +01:00
533 lines
14 KiB
C
Executable File
533 lines
14 KiB
C
Executable File
#include "global.h"
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#include "malloc.h"
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#include "decompress.h"
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#include "ereader_helpers.h"
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#include "link.h"
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#include "main.h"
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#include "mystery_gift_menu.h"
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#include "save.h"
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#include "sound.h"
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#include "sprite.h"
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#include "task.h"
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#include "strings.h"
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#include "util.h"
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#include "constants/songs.h"
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// Equivalent to MysteryGiftTaskData
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struct EReaderTaskData
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{
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u16 timer;
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u16 unused1;
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u16 unused2;
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u16 unused3;
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u8 state;
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u8 textState;
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u8 unused4;
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u8 unused5;
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u8 unused6;
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u8 unused7;
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u8 status;
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u8 *unusedBuffer;
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};
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struct EReaderData
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{
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u16 status;
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u32 size;
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u32 *data;
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};
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static void Task_EReader(u8);
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struct EReaderData gEReaderData;
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extern const u8 gMultiBootProgram_EReader_Start[];
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extern const u8 gMultiBootProgram_EReader_End[];
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static void EReader_Load(struct EReaderData *eReader, int size, u32 *data)
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{
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volatile u16 backupIME = REG_IME;
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REG_IME = 0;
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gIntrTable[1] = EReaderHelper_SerialCallback;
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gIntrTable[2] = EReaderHelper_Timer3Callback;
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EReaderHelper_SaveRegsState();
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EReaderHelper_ClearSendRecvMgr();
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REG_IE |= INTR_FLAG_VCOUNT;
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REG_IME = backupIME;
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eReader->status = 0;
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eReader->size = size;
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eReader->data = data;
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}
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static void EReader_Reset(struct EReaderData *eReader)
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{
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volatile u16 backupIME = REG_IME;
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REG_IME = 0;
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EReaderHelper_ClearSendRecvMgr();
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EReaderHelper_RestoreRegsState();
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RestoreSerialTimer3IntrHandlers();
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REG_IME = backupIME;
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}
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// Return values for EReader_Transfer
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enum {
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TRANSFER_ACTIVE,
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TRANSFER_SUCCESS,
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TRANSFER_CANCELED,
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TRANSFER_TIMEOUT,
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};
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static u8 EReader_Transfer(struct EReaderData *eReader)
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{
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u8 transferStatus = TRANSFER_ACTIVE;
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eReader->status = EReaderHandleTransfer(TRUE, eReader->size, eReader->data, NULL);
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if ((eReader->status & EREADER_XFER_MASK) == 0 && eReader->status & EREADER_CHECKSUM_OK_MASK)
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transferStatus = TRANSFER_SUCCESS;
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if (eReader->status & EREADER_CANCEL_KEY_MASK)
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transferStatus = TRANSFER_CANCELED;
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if (eReader->status & EREADER_CANCEL_TIMEOUT_MASK)
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transferStatus = TRANSFER_TIMEOUT;
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gShouldAdvanceLinkState = 0;
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return transferStatus;
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}
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static void OpenEReaderLink(void)
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{
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memset(gDecompressionBuffer, 0, 0x2000);
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gLinkType = LINKTYPE_EREADER;
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OpenLink();
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SetSuppressLinkErrorMessage(TRUE);
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}
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static bool32 ValidateEReaderConnection(void)
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{
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volatile u16 backupIME;
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u16 handshakes[MAX_LINK_PLAYERS];
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backupIME = REG_IME;
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REG_IME = 0;
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*(u64 *)handshakes = *(u64 *)gLink.handshakeBuffer;
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REG_IME = backupIME;
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// Validate that we are player 1, the EReader is player 2,
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// and that players 3 and 4 are empty.
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if (handshakes[0] == SLAVE_HANDSHAKE && handshakes[1] == EREADER_HANDSHAKE
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&& handshakes[2] == 0xFFFF && handshakes[3] == 0xFFFF)
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{
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return TRUE;
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}
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return FALSE;
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}
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static bool32 IsChildConnected(void)
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{
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if (IsLinkMaster() && GetLinkPlayerCount_2() == 2)
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return TRUE;
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return FALSE;
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}
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// States for TryReceiveCard
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enum {
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RECV_STATE_INIT,
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RECV_STATE_WAIT_START,
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RECV_STATE_START,
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RECV_STATE_EXCHANGE,
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RECV_STATE_START_DISCONNECT,
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RECV_STATE_WAIT_DISCONNECT,
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};
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// Return values for TryReceiveCard
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enum {
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RECV_ACTIVE,
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RECV_CANCELED,
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RECV_SUCCESS,
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RECV_ERROR,
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RECV_DISCONNECTED,
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RECV_TIMEOUT,
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};
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static u32 TryReceiveCard(u8 *state, u16 *timer)
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{
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if (*state >= RECV_STATE_EXCHANGE
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&& *state <= RECV_STATE_WAIT_DISCONNECT
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&& HasLinkErrorOccurred())
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{
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// Return error status if an error occurs
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// during the link exchange.
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*state = 0;
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return RECV_ERROR;
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}
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switch (*state)
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{
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case RECV_STATE_INIT:
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if (IsLinkMaster() && GetLinkPlayerCount_2() > 1)
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{
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*state = RECV_STATE_WAIT_START;
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}
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else if (JOY_NEW(B_BUTTON))
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{
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*state = 0;
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return RECV_CANCELED;
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}
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break;
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case RECV_STATE_WAIT_START:
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if (++(*timer) > 5)
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{
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*timer = 0;
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*state = RECV_STATE_START;
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}
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break;
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case RECV_STATE_START:
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if (GetLinkPlayerCount_2() == 2)
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{
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PlaySE(SE_DING_DONG);
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CheckShouldAdvanceLinkState();
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*timer = 0;
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*state = RECV_STATE_EXCHANGE;
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}
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else if (JOY_NEW(B_BUTTON))
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{
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*state = 0;
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return RECV_CANCELED;
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}
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break;
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case RECV_STATE_EXCHANGE:
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if (++(*timer) > 30)
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{
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*state = 0;
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return RECV_TIMEOUT;
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}
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if (IsLinkConnectionEstablished())
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{
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if (gReceivedRemoteLinkPlayers)
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{
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if (IsLinkPlayerDataExchangeComplete())
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{
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*state = 0;
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return RECV_SUCCESS;
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}
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else
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{
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*state = RECV_STATE_START_DISCONNECT;
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}
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}
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else
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{
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*state = RECV_STATE_EXCHANGE;
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}
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}
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break;
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case RECV_STATE_START_DISCONNECT:
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SetCloseLinkCallbackAndType(0);
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*state = RECV_STATE_WAIT_DISCONNECT;
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break;
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case RECV_STATE_WAIT_DISCONNECT:
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if (!gReceivedRemoteLinkPlayers)
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{
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*state = 0;
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return RECV_DISCONNECTED;
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}
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break;
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default:
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return RECV_ACTIVE;
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}
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return RECV_ACTIVE;
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}
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void CreateEReaderTask(void)
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{
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struct EReaderTaskData *data;
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u8 taskId = CreateTask(Task_EReader, 0);
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data = (struct EReaderTaskData *)gTasks[taskId].data;
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data->state = 0;
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data->textState = 0;
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data->unused4 = 0;
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data->unused5 = 0;
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data->unused6 = 0;
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data->unused7 = 0;
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data->timer = 0;
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data->unused1 = 0;
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data->unused2 = 0;
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data->unused3 = 0;
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data->status = 0;
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data->unusedBuffer = AllocZeroed(0x40);
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}
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static void ResetTimer(u16 *timer)
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{
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*timer = 0;
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}
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static bool32 UpdateTimer(u16 *timer, u16 time)
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{
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if (++(*timer) > time)
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{
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// Timer has finished
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*timer = 0;
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return TRUE;
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}
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return FALSE;
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}
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// States for Task_EReader
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enum {
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ER_STATE_START,
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ER_STATE_INIT_LINK,
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ER_STATE_INIT_LINK_WAIT,
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ER_STATE_INIT_LINK_CHECK,
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ER_STATE_MSG_SELECT_CONNECT,
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ER_STATE_MSG_SELECT_CONNECT_WAIT,
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ER_STATE_TRY_LINK,
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ER_STATE_INCORRECT_LINK,
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ER_STATE_CONNECTING,
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ER_STATE_TRANSFER,
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ER_STATE_TRANSFER_END,
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ER_STATE_TRANSFER_SUCCESS,
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ER_STATE_LOAD_CARD_START,
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ER_STATE_LOAD_CARD,
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ER_STATE_WAIT_RECV_CARD,
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ER_STATE_VALIDATE_CARD,
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ER_STATE_WAIT_DISCONNECT,
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ER_STATE_SAVE,
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ER_STATE_SUCCESS_MSG,
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ER_STATE_SUCCESS_END,
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ER_STATE_LINK_ERROR,
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ER_STATE_LINK_ERROR_TRY_AGAIN,
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ER_STATE_SAVE_FAILED,
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ER_STATE_CANCELED_CARD_READ,
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ER_STATE_UNUSED_1,
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ER_STATE_UNUSED_2,
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ER_STATE_END,
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};
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static void Task_EReader(u8 taskId)
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{
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struct EReaderTaskData *data = (struct EReaderTaskData *)gTasks[taskId].data;
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switch (data->state)
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{
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case ER_STATE_START:
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if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_ReceiveMysteryGiftWithEReader))
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data->state = ER_STATE_INIT_LINK;
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break;
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case ER_STATE_INIT_LINK:
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OpenEReaderLink();
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ResetTimer(&data->timer);
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data->state = ER_STATE_INIT_LINK_WAIT;
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break;
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case ER_STATE_INIT_LINK_WAIT:
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if (UpdateTimer(&data->timer, 10))
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data->state = ER_STATE_INIT_LINK_CHECK;
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break;
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case ER_STATE_INIT_LINK_CHECK:
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if (!IsChildConnected())
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{
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CloseLink();
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data->state = ER_STATE_MSG_SELECT_CONNECT;
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}
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else
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{
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data->state = ER_STATE_LOAD_CARD;
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}
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break;
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case ER_STATE_MSG_SELECT_CONNECT:
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if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_SelectConnectFromEReaderMenu))
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{
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AddTextPrinterToWindow1(gJPText_SelectConnectWithGBA);
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ResetTimer(&data->timer);
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data->state = ER_STATE_MSG_SELECT_CONNECT_WAIT;
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}
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break;
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case ER_STATE_MSG_SELECT_CONNECT_WAIT:
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if (UpdateTimer(&data->timer, 90))
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{
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OpenEReaderLink();
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data->state = ER_STATE_TRY_LINK;
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}
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else if (JOY_NEW(B_BUTTON))
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{
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ResetTimer(&data->timer);
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PlaySE(SE_SELECT);
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data->state = ER_STATE_CANCELED_CARD_READ;
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}
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break;
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case ER_STATE_TRY_LINK:
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if (JOY_NEW(B_BUTTON))
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{
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// Canceled
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PlaySE(SE_SELECT);
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CloseLink();
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ResetTimer(&data->timer);
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data->state = ER_STATE_CANCELED_CARD_READ;
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}
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else if (GetLinkPlayerCount_2() > 1)
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{
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ResetTimer(&data->timer);
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CloseLink();
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data->state = ER_STATE_INCORRECT_LINK;
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}
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else if (ValidateEReaderConnection())
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{
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// Successful connection
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PlaySE(SE_SELECT);
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CloseLink();
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ResetTimer(&data->timer);
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data->state = ER_STATE_CONNECTING;
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}
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else if (UpdateTimer(&data->timer, 10))
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{
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// Retry connection
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CloseLink();
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OpenEReaderLink();
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ResetTimer(&data->timer);
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}
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break;
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case ER_STATE_INCORRECT_LINK:
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if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_LinkIsIncorrect))
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data->state = ER_STATE_MSG_SELECT_CONNECT;
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break;
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case ER_STATE_CONNECTING:
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AddTextPrinterToWindow1(gJPText_Connecting);
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// XXX: This (u32*) cast is discarding the const qualifier from gMultiBootProgram_EReader_Start
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EReader_Load(&gEReaderData, gMultiBootProgram_EReader_End - gMultiBootProgram_EReader_Start, (u32*)gMultiBootProgram_EReader_Start);
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data->state = ER_STATE_TRANSFER;
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break;
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case ER_STATE_TRANSFER:
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data->status = EReader_Transfer(&gEReaderData);
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if (data->status != TRANSFER_ACTIVE)
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data->state = ER_STATE_TRANSFER_END;
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break;
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case ER_STATE_TRANSFER_END:
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EReader_Reset(&gEReaderData);
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if (data->status == TRANSFER_TIMEOUT)
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{
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data->state = ER_STATE_LINK_ERROR;
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}
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else if (data->status == TRANSFER_SUCCESS)
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{
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ResetTimer(&data->timer);
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AddTextPrinterToWindow1(gJPText_PleaseWaitAMoment);
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data->state = ER_STATE_TRANSFER_SUCCESS;
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}
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else // TRANSFER_CANCELED
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{
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data->state = ER_STATE_START;
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}
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break;
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case ER_STATE_TRANSFER_SUCCESS:
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if (UpdateTimer(&data->timer, 840))
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data->state = ER_STATE_LOAD_CARD_START;
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break;
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case ER_STATE_LOAD_CARD_START:
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OpenEReaderLink();
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AddTextPrinterToWindow1(gJPText_AllowEReaderToLoadCard);
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data->state = ER_STATE_LOAD_CARD;
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break;
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case ER_STATE_LOAD_CARD:
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switch (TryReceiveCard(&data->textState, &data->timer))
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{
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case RECV_ACTIVE:
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break;
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case RECV_SUCCESS:
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AddTextPrinterToWindow1(gJPText_Connecting);
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data->state = ER_STATE_WAIT_RECV_CARD;
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break;
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case RECV_CANCELED:
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PlaySE(SE_SELECT);
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CloseLink();
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data->state = ER_STATE_CANCELED_CARD_READ;
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break;
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case RECV_TIMEOUT:
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CloseLink();
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data->state = ER_STATE_LINK_ERROR_TRY_AGAIN;
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break;
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case RECV_ERROR:
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case RECV_DISCONNECTED:
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CloseLink();
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data->state = ER_STATE_LINK_ERROR;
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break;
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}
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break;
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case ER_STATE_WAIT_RECV_CARD:
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if (HasLinkErrorOccurred())
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{
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CloseLink();
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data->state = ER_STATE_LINK_ERROR;
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}
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else if (GetBlockReceivedStatus())
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{
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ResetBlockReceivedFlags();
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data->state = ER_STATE_VALIDATE_CARD;
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}
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break;
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case ER_STATE_VALIDATE_CARD:
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data->status = ValidateTrainerHillData((struct EReaderTrainerHillSet *)gDecompressionBuffer);
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SetCloseLinkCallbackAndType(data->status);
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data->state = ER_STATE_WAIT_DISCONNECT;
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break;
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case ER_STATE_WAIT_DISCONNECT:
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if (!gReceivedRemoteLinkPlayers)
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{
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if (data->status == TRUE) // Was data valid?
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data->state = ER_STATE_SAVE;
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else
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data->state = ER_STATE_LINK_ERROR;
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}
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break;
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case ER_STATE_SAVE:
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if (TryWriteTrainerHill((struct EReaderTrainerHillSet *)&gDecompressionBuffer))
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{
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AddTextPrinterToWindow1(gJPText_ConnectionComplete);
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ResetTimer(&data->timer);
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data->state = ER_STATE_SUCCESS_MSG;
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}
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else
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{
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data->state = ER_STATE_SAVE_FAILED;
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}
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break;
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case ER_STATE_SUCCESS_MSG:
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if (UpdateTimer(&data->timer, 120))
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{
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AddTextPrinterToWindow1(gJPText_NewTrainerHasComeToHoenn);
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PlayFanfare(MUS_OBTAIN_ITEM);
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data->state = ER_STATE_SUCCESS_END;
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}
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break;
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case ER_STATE_SUCCESS_END:
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if (IsFanfareTaskInactive() && (JOY_NEW(A_BUTTON | B_BUTTON)))
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data->state = ER_STATE_END;
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break;
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case ER_STATE_CANCELED_CARD_READ:
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if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_CardReadingHasBeenHalted))
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data->state = ER_STATE_END;
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break;
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case ER_STATE_LINK_ERROR:
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if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_ConnectionErrorCheckLink))
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data->state = ER_STATE_START;
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break;
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case ER_STATE_LINK_ERROR_TRY_AGAIN:
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if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_ConnectionErrorTryAgain))
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data->state = ER_STATE_START;
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break;
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case ER_STATE_SAVE_FAILED:
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if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_WriteErrorUnableToSaveData))
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data->state = ER_STATE_START;
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break;
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case ER_STATE_END:
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Free(data->unusedBuffer);
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DestroyTask(taskId);
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SetMainCallback2(MainCB_FreeAllBuffersAndReturnToInitTitleScreen);
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break;
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}
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}
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