tumbledemerald-legacy/src/ereader_screen.c

533 lines
14 KiB
C
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2022-05-19 19:14:13 +02:00
#include "global.h"
#include "malloc.h"
#include "decompress.h"
#include "ereader_helpers.h"
#include "link.h"
#include "main.h"
#include "mystery_gift_menu.h"
#include "save.h"
#include "sound.h"
#include "sprite.h"
#include "task.h"
#include "strings.h"
#include "util.h"
#include "constants/songs.h"
// Equivalent to MysteryGiftTaskData
struct EReaderTaskData
{
u16 timer;
u16 unused1;
u16 unused2;
u16 unused3;
u8 state;
u8 textState;
u8 unused4;
u8 unused5;
u8 unused6;
u8 unused7;
u8 status;
u8 *unusedBuffer;
};
struct EReaderData
{
u16 status;
u32 size;
u32 *data;
};
static void Task_EReader(u8);
struct EReaderData gEReaderData;
extern const u8 gEReaderLinkData_Start[];
extern const u8 gEReaderLinkData_End[];
static void EReader_Load(struct EReaderData *eReader, int size, u32 *data)
{
volatile u16 backupIME = REG_IME;
REG_IME = 0;
gIntrTable[1] = EReaderHelper_SerialCallback;
gIntrTable[2] = EReaderHelper_Timer3Callback;
EReaderHelper_SaveRegsState();
EReaderHelper_ClearSendRecvMgr();
REG_IE |= INTR_FLAG_VCOUNT;
REG_IME = backupIME;
eReader->status = 0;
eReader->size = size;
eReader->data = data;
}
static void EReader_Reset(struct EReaderData *eReader)
{
volatile u16 backupIME = REG_IME;
REG_IME = 0;
EReaderHelper_ClearSendRecvMgr();
EReaderHelper_RestoreRegsState();
RestoreSerialTimer3IntrHandlers();
REG_IME = backupIME;
}
// Return values for EReader_Transfer
enum {
TRANSFER_ACTIVE,
TRANSFER_SUCCESS,
TRANSFER_CANCELED,
TRANSFER_TIMEOUT,
};
static u8 EReader_Transfer(struct EReaderData *eReader)
{
u8 transferStatus = TRANSFER_ACTIVE;
eReader->status = EReaderHandleTransfer(TRUE, eReader->size, eReader->data, NULL);
if ((eReader->status & EREADER_XFER_MASK) == 0 && eReader->status & EREADER_CHECKSUM_OK_MASK)
transferStatus = TRANSFER_SUCCESS;
if (eReader->status & EREADER_CANCEL_KEY_MASK)
transferStatus = TRANSFER_CANCELED;
if (eReader->status & EREADER_CANCEL_TIMEOUT_MASK)
transferStatus = TRANSFER_TIMEOUT;
gShouldAdvanceLinkState = 0;
return transferStatus;
}
static void OpenEReaderLink(void)
{
memset(gDecompressionBuffer, 0, 0x2000);
gLinkType = LINKTYPE_EREADER;
OpenLink();
SetSuppressLinkErrorMessage(TRUE);
}
static bool32 ValidateEReaderConnection(void)
{
volatile u16 backupIME;
u16 handshakes[MAX_LINK_PLAYERS];
backupIME = REG_IME;
REG_IME = 0;
*(u64 *)handshakes = *(u64 *)gLink.handshakeBuffer;
REG_IME = backupIME;
// Validate that we are player 1, the EReader is player 2,
// and that players 3 and 4 are empty.
if (handshakes[0] == SLAVE_HANDSHAKE && handshakes[1] == EREADER_HANDSHAKE
&& handshakes[2] == 0xFFFF && handshakes[3] == 0xFFFF)
{
return TRUE;
}
return FALSE;
}
static bool32 IsChildConnected(void)
{
if (IsLinkMaster() && GetLinkPlayerCount_2() == 2)
return TRUE;
return FALSE;
}
// States for TryReceiveCard
enum {
RECV_STATE_INIT,
RECV_STATE_WAIT_START,
RECV_STATE_START,
RECV_STATE_EXCHANGE,
RECV_STATE_START_DISCONNECT,
RECV_STATE_WAIT_DISCONNECT,
};
// Return values for TryReceiveCard
enum {
RECV_ACTIVE,
RECV_CANCELED,
RECV_SUCCESS,
RECV_ERROR,
RECV_DISCONNECTED,
RECV_TIMEOUT,
};
static u32 TryReceiveCard(u8 *state, u16 *timer)
{
if (*state >= RECV_STATE_EXCHANGE
&& *state <= RECV_STATE_WAIT_DISCONNECT
&& HasLinkErrorOccurred())
{
// Return error status if an error occurs
// during the link exchange.
*state = 0;
return RECV_ERROR;
}
switch (*state)
{
case RECV_STATE_INIT:
if (IsLinkMaster() && GetLinkPlayerCount_2() > 1)
{
*state = RECV_STATE_WAIT_START;
}
else if (JOY_NEW(B_BUTTON))
{
*state = 0;
return RECV_CANCELED;
}
break;
case RECV_STATE_WAIT_START:
if (++(*timer) > 5)
{
*timer = 0;
*state = RECV_STATE_START;
}
break;
case RECV_STATE_START:
if (GetLinkPlayerCount_2() == 2)
{
PlaySE(SE_DING_DONG);
CheckShouldAdvanceLinkState();
*timer = 0;
*state = RECV_STATE_EXCHANGE;
}
else if (JOY_NEW(B_BUTTON))
{
*state = 0;
return RECV_CANCELED;
}
break;
case RECV_STATE_EXCHANGE:
if (++(*timer) > 30)
{
*state = 0;
return RECV_TIMEOUT;
}
if (IsLinkConnectionEstablished())
{
if (gReceivedRemoteLinkPlayers)
{
if (IsLinkPlayerDataExchangeComplete())
{
*state = 0;
return RECV_SUCCESS;
}
else
{
*state = RECV_STATE_START_DISCONNECT;
}
}
else
{
*state = RECV_STATE_EXCHANGE;
}
}
break;
case RECV_STATE_START_DISCONNECT:
SetCloseLinkCallbackAndType(0);
*state = RECV_STATE_WAIT_DISCONNECT;
break;
case RECV_STATE_WAIT_DISCONNECT:
if (!gReceivedRemoteLinkPlayers)
{
*state = 0;
return RECV_DISCONNECTED;
}
break;
default:
return RECV_ACTIVE;
}
return RECV_ACTIVE;
}
void CreateEReaderTask(void)
{
struct EReaderTaskData *data;
u8 taskId = CreateTask(Task_EReader, 0);
data = (struct EReaderTaskData *)gTasks[taskId].data;
data->state = 0;
data->textState = 0;
data->unused4 = 0;
data->unused5 = 0;
data->unused6 = 0;
data->unused7 = 0;
data->timer = 0;
data->unused1 = 0;
data->unused2 = 0;
data->unused3 = 0;
data->status = 0;
data->unusedBuffer = AllocZeroed(0x40);
}
static void ResetTimer(u16 *timer)
{
*timer = 0;
}
static bool32 UpdateTimer(u16 *timer, u16 time)
{
if (++(*timer) > time)
{
// Timer has finished
*timer = 0;
return TRUE;
}
return FALSE;
}
// States for Task_EReader
enum {
ER_STATE_START,
ER_STATE_INIT_LINK,
ER_STATE_INIT_LINK_WAIT,
ER_STATE_INIT_LINK_CHECK,
ER_STATE_MSG_SELECT_CONNECT,
ER_STATE_MSG_SELECT_CONNECT_WAIT,
ER_STATE_TRY_LINK,
ER_STATE_INCORRECT_LINK,
ER_STATE_CONNECTING,
ER_STATE_TRANSFER,
ER_STATE_TRANSFER_END,
ER_STATE_TRANSFER_SUCCESS,
ER_STATE_LOAD_CARD_START,
ER_STATE_LOAD_CARD,
ER_STATE_WAIT_RECV_CARD,
ER_STATE_VALIDATE_CARD,
ER_STATE_WAIT_DISCONNECT,
ER_STATE_SAVE,
ER_STATE_SUCCESS_MSG,
ER_STATE_SUCCESS_END,
ER_STATE_LINK_ERROR,
ER_STATE_LINK_ERROR_TRY_AGAIN,
ER_STATE_SAVE_FAILED,
ER_STATE_CANCELED_CARD_READ,
ER_STATE_UNUSED_1,
ER_STATE_UNUSED_2,
ER_STATE_END,
};
static void Task_EReader(u8 taskId)
{
struct EReaderTaskData *data = (struct EReaderTaskData *)gTasks[taskId].data;
switch (data->state)
{
case ER_STATE_START:
if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_ReceiveMysteryGiftWithEReader))
data->state = ER_STATE_INIT_LINK;
break;
case ER_STATE_INIT_LINK:
OpenEReaderLink();
ResetTimer(&data->timer);
data->state = ER_STATE_INIT_LINK_WAIT;
break;
case ER_STATE_INIT_LINK_WAIT:
if (UpdateTimer(&data->timer, 10))
data->state = ER_STATE_INIT_LINK_CHECK;
break;
case ER_STATE_INIT_LINK_CHECK:
if (!IsChildConnected())
{
CloseLink();
data->state = ER_STATE_MSG_SELECT_CONNECT;
}
else
{
data->state = ER_STATE_LOAD_CARD;
}
break;
case ER_STATE_MSG_SELECT_CONNECT:
if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_SelectConnectFromEReaderMenu))
{
AddTextPrinterToWindow1(gJPText_SelectConnectWithGBA);
ResetTimer(&data->timer);
data->state = ER_STATE_MSG_SELECT_CONNECT_WAIT;
}
break;
case ER_STATE_MSG_SELECT_CONNECT_WAIT:
if (UpdateTimer(&data->timer, 90))
{
OpenEReaderLink();
data->state = ER_STATE_TRY_LINK;
}
else if (JOY_NEW(B_BUTTON))
{
ResetTimer(&data->timer);
PlaySE(SE_SELECT);
data->state = ER_STATE_CANCELED_CARD_READ;
}
break;
case ER_STATE_TRY_LINK:
if (JOY_NEW(B_BUTTON))
{
// Canceled
PlaySE(SE_SELECT);
CloseLink();
ResetTimer(&data->timer);
data->state = ER_STATE_CANCELED_CARD_READ;
}
else if (GetLinkPlayerCount_2() > 1)
{
ResetTimer(&data->timer);
CloseLink();
data->state = ER_STATE_INCORRECT_LINK;
}
else if (ValidateEReaderConnection())
{
// Successful connection
PlaySE(SE_SELECT);
CloseLink();
ResetTimer(&data->timer);
data->state = ER_STATE_CONNECTING;
}
else if (UpdateTimer(&data->timer, 10))
{
// Retry connection
CloseLink();
OpenEReaderLink();
ResetTimer(&data->timer);
}
break;
case ER_STATE_INCORRECT_LINK:
if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_LinkIsIncorrect))
data->state = ER_STATE_MSG_SELECT_CONNECT;
break;
case ER_STATE_CONNECTING:
AddTextPrinterToWindow1(gJPText_Connecting);
// XXX: This (u32*) cast is discarding the const qualifier from gEReaderLinkData_Start
EReader_Load(&gEReaderData, gEReaderLinkData_End - gEReaderLinkData_Start, (u32*)gEReaderLinkData_Start);
data->state = ER_STATE_TRANSFER;
break;
case ER_STATE_TRANSFER:
data->status = EReader_Transfer(&gEReaderData);
if (data->status != TRANSFER_ACTIVE)
data->state = ER_STATE_TRANSFER_END;
break;
case ER_STATE_TRANSFER_END:
EReader_Reset(&gEReaderData);
if (data->status == TRANSFER_TIMEOUT)
{
data->state = ER_STATE_LINK_ERROR;
}
else if (data->status == TRANSFER_SUCCESS)
{
ResetTimer(&data->timer);
AddTextPrinterToWindow1(gJPText_PleaseWaitAMoment);
data->state = ER_STATE_TRANSFER_SUCCESS;
}
else // TRANSFER_CANCELED
{
data->state = ER_STATE_START;
}
break;
case ER_STATE_TRANSFER_SUCCESS:
if (UpdateTimer(&data->timer, 840))
data->state = ER_STATE_LOAD_CARD_START;
break;
case ER_STATE_LOAD_CARD_START:
OpenEReaderLink();
AddTextPrinterToWindow1(gJPText_AllowEReaderToLoadCard);
data->state = ER_STATE_LOAD_CARD;
break;
case ER_STATE_LOAD_CARD:
switch (TryReceiveCard(&data->textState, &data->timer))
{
case RECV_ACTIVE:
break;
case RECV_SUCCESS:
AddTextPrinterToWindow1(gJPText_Connecting);
data->state = ER_STATE_WAIT_RECV_CARD;
break;
case RECV_CANCELED:
PlaySE(SE_SELECT);
CloseLink();
data->state = ER_STATE_CANCELED_CARD_READ;
break;
case RECV_TIMEOUT:
CloseLink();
data->state = ER_STATE_LINK_ERROR_TRY_AGAIN;
break;
case RECV_ERROR:
case RECV_DISCONNECTED:
CloseLink();
data->state = ER_STATE_LINK_ERROR;
break;
}
break;
case ER_STATE_WAIT_RECV_CARD:
if (HasLinkErrorOccurred())
{
CloseLink();
data->state = ER_STATE_LINK_ERROR;
}
else if (GetBlockReceivedStatus())
{
ResetBlockReceivedFlags();
data->state = ER_STATE_VALIDATE_CARD;
}
break;
case ER_STATE_VALIDATE_CARD:
data->status = ValidateTrainerHillData((struct EReaderTrainerHillSet *)gDecompressionBuffer);
SetCloseLinkCallbackAndType(data->status);
data->state = ER_STATE_WAIT_DISCONNECT;
break;
case ER_STATE_WAIT_DISCONNECT:
if (!gReceivedRemoteLinkPlayers)
{
if (data->status == TRUE) // Was data valid?
data->state = ER_STATE_SAVE;
else
data->state = ER_STATE_LINK_ERROR;
}
break;
case ER_STATE_SAVE:
if (TryWriteTrainerHill((struct EReaderTrainerHillSet *)&gDecompressionBuffer))
{
AddTextPrinterToWindow1(gJPText_ConnectionComplete);
ResetTimer(&data->timer);
data->state = ER_STATE_SUCCESS_MSG;
}
else
{
data->state = ER_STATE_SAVE_FAILED;
}
break;
case ER_STATE_SUCCESS_MSG:
if (UpdateTimer(&data->timer, 120))
{
AddTextPrinterToWindow1(gJPText_NewTrainerHasComeToHoenn);
PlayFanfare(MUS_OBTAIN_ITEM);
data->state = ER_STATE_SUCCESS_END;
}
break;
case ER_STATE_SUCCESS_END:
if (IsFanfareTaskInactive() && (JOY_NEW(A_BUTTON | B_BUTTON)))
data->state = ER_STATE_END;
break;
case ER_STATE_CANCELED_CARD_READ:
if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_CardReadingHasBeenHalted))
data->state = ER_STATE_END;
break;
case ER_STATE_LINK_ERROR:
if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_ConnectionErrorCheckLink))
data->state = ER_STATE_START;
break;
case ER_STATE_LINK_ERROR_TRY_AGAIN:
if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_ConnectionErrorTryAgain))
data->state = ER_STATE_START;
break;
case ER_STATE_SAVE_FAILED:
if (PrintMysteryGiftMenuMessage(&data->textState, gJPText_WriteErrorUnableToSaveData))
data->state = ER_STATE_START;
break;
case ER_STATE_END:
Free(data->unusedBuffer);
DestroyTask(taskId);
SetMainCallback2(MainCB_FreeAllBuffersAndReturnToInitTitleScreen);
break;
}
}