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main.c
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main.c
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// Save Game Copier - a utility that copies Sega Saturn save game files
/*
** Jo Sega Saturn Engine
** Copyright (c) 2012-2017, Johannes Fetz ([email protected])
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** * Neither the name of the Johannes Fetz nor the
** names of its contributors may be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
** DISCLAIMED. IN NO EVENT SHALL Johannes Fetz BE LIABLE FOR ANY
** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <jo/jo.h>
#include "STDLIB.H"
#include "STRING.H"
#include "main.h"
#include "util.h"
#include "backup.h"
#include "backup-satiator.h" // needed for satiatorReboot()
GAME g_Game = {0};
SAVES g_Saves[MAX_SAVES] = {0};
void jo_main(void)
{
jo_core_init(JO_COLOR_Black);
// check if internal memory is present
// check if cartridge memory is present
// check if external memory is present
// check if satiator is present
// allocate our save file buffe
g_Game.saveBupHeader = jo_malloc(sizeof(BUP_HEADER) + MAX_SAVE_SIZE);
if(g_Game.saveBupHeader == NULL)
{
sgc_core_error("Failed to allocated save file data buffer!!");
return;
}
g_Game.saveFileData = (unsigned char*)(g_Game.saveBupHeader + 1);
// increase the default heap size. LWRAM is not being used
jo_add_memory_zone((unsigned char *)LWRAM, LWRAM_HEAP_SIZE);
// ABC + start handler
jo_core_set_restart_game_callback(abcStartHandler);
// callbacks
jo_core_add_callback(main_draw);
jo_core_add_callback(main_input);
jo_core_add_callback(listSaves_draw);
jo_core_add_callback(listSaves_input);
jo_core_add_callback(displaySave_draw);
jo_core_add_callback(displaySave_input);
jo_core_add_callback(format_draw);
jo_core_add_callback(format_input);
jo_core_add_callback(formatVerify_draw);
jo_core_add_callback(formatVerify_input);
jo_core_add_callback(dumpMemory_draw);
jo_core_add_callback(dumpMemory_input);
jo_core_add_callback(collect_draw);
jo_core_add_callback(collect_input);
jo_core_add_callback(credits_draw);
jo_core_add_callback(credits_input);
// debug output
//jo_core_add_callback(debugOutput_draw);
queryBackupDevices();
// initial state
resetState();
jo_core_run();
}
// useful debug output
void debugOutput_draw()
{
// memory usage
//jo_printf(2, 0, "Memory Usage: %d Frag: %d" , jo_memory_usage_percent(), jo_memory_fragmentation());
//jo_printf(2, 1, "Save: %d CO: %d" , g_Game.numSaves, g_Game.cursorOffset);
//// debug the state
//jo_printf(2, 0, "State depth: %d ", g_Game.numStates);
//for(int i = 0; i < MAX_STATES; i++)
//{
//jo_printf(2 + (i*2), 1, "%d ", g_Game.previousStates[i]);
//}
jo_printf(2, 25, "save name: %s", g_Game.saveName);
jo_printf(2, 26, "file name: %s", g_Game.saveFilename);
}
// restarts the program if controller one presses ABC+Start
// this definitely leaks memory but whatever...
// maybe I should just call jo_main()?
void abcStartHandler(void)
{
g_Game.input.pressedStartAC = true;
g_Game.input.pressedB = true;
resetState();
return;
}
// verifies which backup devices are available
// needed for dynamic menu
void queryBackupDevices(void)
{
if(SKIP_DEVICE_CHECKS == 0)
{
g_Game.deviceInternalMemoryBackup = isBackupDeviceAvailable(JoInternalMemoryBackup);
g_Game.deviceCartridgeMemoryBackup = isBackupDeviceAvailable(JoCartridgeMemoryBackup);
g_Game.deviceExternalDeviceBackup = isBackupDeviceAvailable(JoExternalDeviceBackup);
g_Game.deviceSatiatorBackup = isBackupDeviceAvailable(SatiatorBackup);
g_Game.deviceCdMemoryBackup = isBackupDeviceAvailable(CdMemoryBackup);
// some Satiator users were reporting black screens at boot
// possibly related to MODE?
if(g_Game.deviceSatiatorBackup == false)
{
g_Game.deviceModeBackup = isBackupDeviceAvailable(MODEBackup);
}
}
else
{
g_Game.deviceInternalMemoryBackup = true;
g_Game.deviceCartridgeMemoryBackup = true;
g_Game.deviceExternalDeviceBackup = true;
g_Game.deviceSatiatorBackup = true;
g_Game.deviceCdMemoryBackup = true;
g_Game.deviceModeBackup = true;
}
return;
}
// helper for transitioning between program states
// adds/removes callbacks as needed
// resets globals as needed
void transitionToState(int newState)
{
clearScreen();
// STATE_PREVIOUS is a handled specially
// one pop for our current state
// the second pop to get to our previous state
if(newState == STATE_PREVIOUS)
{
newState = popState();
newState = popState();
}
// save off the new state we are in
pushState(newState);
switch(g_Game.state)
{
case STATE_UNINITIALIZED:
case STATE_MAIN:
case STATE_LIST_SAVES:
case STATE_DISPLAY_SAVE:
case STATE_DISPLAY_MEMORY:
case STATE_FORMAT:
case STATE_FORMAT_VERIFY:
case STATE_DUMP_MEMORY:
case STATE_WRITE_MEMORY:
case STATE_COLLECT:
case STATE_CREDITS:
break;
default:
sgc_core_error("%d is an invalid current state!!", g_Game.state);
return;
}
switch(newState)
{
case STATE_MAIN:
g_Game.cursorPosX = CURSOR_X;
g_Game.cursorPosY = OPTIONS_Y;
g_Game.cursorOffset = 0;
g_Game.numStateOptions = initMenuOptions(STATE_MAIN);
break;
case STATE_LIST_SAVES:
g_Game.cursorPosX = CURSOR_X;
g_Game.cursorPosY = OPTIONS_Y + 1;
g_Game.cursorOffset = 0;
g_Game.numStateOptions = 0; // 0 options until we list the number of saves
g_Game.numSaves = 0; // number of saves counted
g_Game.listedSaves = false;
break;
case STATE_DISPLAY_SAVE:
case STATE_DISPLAY_MEMORY:
g_Game.cursorPosX = CURSOR_X;
g_Game.cursorPosY = SAVES_Y;
g_Game.cursorOffset = 0;
g_Game.numStateOptions = SAVES_NUM_OPTIONS;
g_Game.md5Calculated = false;
g_Game.operationStatus = OPERATION_UNINIT;
g_Game.numStateOptions = initMenuOptions(STATE_DISPLAY_SAVE);
break;
case STATE_FORMAT:
g_Game.cursorPosX = CURSOR_X;
g_Game.cursorPosY = OPTIONS_Y;
g_Game.cursorOffset = 0;
g_Game.operationStatus = OPERATION_UNINIT;
g_Game.numStateOptions = initMenuOptions(STATE_FORMAT);
break;
case STATE_FORMAT_VERIFY:
g_Game.cursorPosX = CURSOR_X;
g_Game.cursorPosY = VERIFY_Y;
g_Game.cursorOffset = 0;
g_Game.numStateOptions = FORMAT_VERIFY_NUM_OPTIONS;
break;
case STATE_DUMP_MEMORY:
g_Game.cursorPosX = CURSOR_X + 14;
g_Game.cursorPosY = VERIFY_Y - 2;
g_Game.cursorOffset = 0;
g_Game.numStateOptions = 16;
g_Game.dumpMemoryAddress = 0;
g_Game.dumpMemorySize = 0;
break;
case STATE_WRITE_MEMORY:
g_Game.cursorPosX = CURSOR_X + 14;
g_Game.cursorPosY = VERIFY_Y - 2;
g_Game.cursorOffset = 0;
g_Game.numStateOptions = 16;
g_Game.dumpMemoryAddress = 0;
g_Game.dumpMemorySize = g_Game.saveFileSize;
g_Game.operationStatus = OPERATION_UNINIT;
break;
case STATE_COLLECT:
break;
case STATE_CREDITS:
break;
default:
sgc_core_error("%d is an invalid state!!", newState);
return;
}
g_Game.state = newState;
return;
}
// reset the global state
// useful when a major error happens
void resetState(void)
{
g_Game.numStates = 0;
memset(g_Game.previousStates, 0, sizeof(g_Game.previousStates));
transitionToState(STATE_MAIN);
}
// pop off the current state
int popState(void)
{
int tempState;
if(g_Game.numStates > 0)
{
g_Game.numStates--;
tempState = g_Game.previousStates[g_Game.numStates];
g_Game.previousStates[g_Game.numStates] = 0;
return tempState;
}
else
{
// should never get here
sgc_core_error("popState: invalid numStates %d!!", g_Game.numStates);
g_Game.numStates = 0;
return STATE_MAIN;
}
}
// push a state to our array
int pushState(int newState)
{
if(g_Game.numStates + 1 >= MAX_STATES)
{
// bugbug: should never get here too deep
// should never get here
sgc_core_error("pushState: invalid numStates %d!!", g_Game.numStates);
g_Game.numStates = 0;
return STATE_MAIN;
}
g_Game.previousStates[g_Game.numStates] = newState;
g_Game.numStates++;
return 0;
}
// initialize the menu for the specified state
// the dynamic menu should only show options that make sense for the user
// ex. hide Satiator for non-Satiator users etc
// returns the number of options on success
unsigned int initMenuOptions(int newState)
{
unsigned int numMenuOptions = 0;
memset(&g_Game.menuOptions, 0, sizeof(g_Game.menuOptions));
g_Game.numMenuOptions = 0;
switch(newState)
{
case STATE_MAIN:
{
// only show main menu options for devices that have been detected
if(g_Game.deviceInternalMemoryBackup == true)
{
g_Game.menuOptions[numMenuOptions].optionText = "Internal Memory";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_INTERNAL;
numMenuOptions++;
}
if(g_Game.deviceCartridgeMemoryBackup == true)
{
g_Game.menuOptions[numMenuOptions].optionText = "Cartridge Memory";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_CARTRIDGE;
numMenuOptions++;
}
if(g_Game.deviceExternalDeviceBackup == true)
{
g_Game.menuOptions[numMenuOptions].optionText = "External Device (Floppy)";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_EXTERNAL;
numMenuOptions++;
}
if(g_Game.deviceSatiatorBackup == true)
{
g_Game.menuOptions[numMenuOptions].optionText = "Satiator";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_SATIATOR;
numMenuOptions++;
}
if (g_Game.deviceModeBackup == true)
{
g_Game.menuOptions[numMenuOptions].optionText = "MODE";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_MODE;
numMenuOptions++;
}
if(g_Game.deviceCdMemoryBackup == true)
{
g_Game.menuOptions[numMenuOptions].optionText = "CD File System";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_CD;
numMenuOptions++;
}
g_Game.menuOptions[numMenuOptions].optionText = "Dump Memory";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_DUMP_MEMORY;
numMenuOptions++;
if(g_Game.deviceInternalMemoryBackup == true)
{
g_Game.menuOptions[numMenuOptions].optionText = "Format Device";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_FORMAT;
numMenuOptions++;
}
g_Game.menuOptions[numMenuOptions].optionText = "Save Collect Project";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_COLLECT;
numMenuOptions++;
g_Game.menuOptions[numMenuOptions].optionText = "Credits";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_CREDITS;
numMenuOptions++;
g_Game.menuOptions[numMenuOptions].optionText = "Exit to CD Player";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_EXIT;
numMenuOptions++;
if(g_Game.deviceSatiatorBackup == true)
{
g_Game.menuOptions[numMenuOptions].optionText = "Exit to Satiator";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_EXIT_SATIATOR;
numMenuOptions++;
}
g_Game.menuOptions[numMenuOptions].optionText = "Reboot";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_REBOOT;
numMenuOptions++;
break;
}
case STATE_DISPLAY_SAVE:
{
// only show display save menu options for devices that have been detected
// don't allow user to copy file back to same device
// don't allow user to delete CD save
if(g_Game.deviceInternalMemoryBackup == true && g_Game.backupDevice != JoInternalMemoryBackup)
{
g_Game.menuOptions[numMenuOptions].optionText = "Copy to Internal Memory";
g_Game.menuOptions[numMenuOptions].option = SAVE_OPTION_INTERNAL;
numMenuOptions++;
}
if(g_Game.deviceCartridgeMemoryBackup == true && g_Game.backupDevice != JoCartridgeMemoryBackup)
{
g_Game.menuOptions[numMenuOptions].optionText = "Copy to Cartridge Memory";
g_Game.menuOptions[numMenuOptions].option = SAVE_OPTION_CARTRIDGE;
numMenuOptions++;
}
if(g_Game.deviceExternalDeviceBackup == true && g_Game.backupDevice != JoExternalDeviceBackup)
{
g_Game.menuOptions[numMenuOptions].optionText = "Copy to External Device (Floppy)";
g_Game.menuOptions[numMenuOptions].option = SAVE_OPTION_EXTERNAL;
numMenuOptions++;
}
if(g_Game.deviceSatiatorBackup == true && g_Game.backupDevice != SatiatorBackup)
{
g_Game.menuOptions[numMenuOptions].optionText = "Copy to Satiator";
g_Game.menuOptions[numMenuOptions].option = SAVE_OPTION_SATIATOR;
numMenuOptions++;
}
if (g_Game.deviceModeBackup == true && g_Game.backupDevice != MODEBackup)
{
g_Game.menuOptions[numMenuOptions].optionText = "Copy to MODE";
g_Game.menuOptions[numMenuOptions].option = SAVE_OPTION_MODE;
numMenuOptions++;
}
// TODO: temporarily disable write to memory option
//g_Game.menuOptions[numMenuOptions].optionText = "Write to Memory";
//g_Game.menuOptions[numMenuOptions].option = SAVE_OPTION_WRITE_MEMORY;
//numMenuOptions++;
// this check should really be isBackupDeviceWriteable()
// for now we just check if it's not the cd
if(g_Game.backupDevice != CdMemoryBackup && g_Game.backupDevice != MemoryBackup)
{
g_Game.menuOptions[numMenuOptions].optionText = "Delete Save";
g_Game.menuOptions[numMenuOptions].option = SAVE_OPTION_DELETE;
numMenuOptions++;
}
break;
}
case STATE_FORMAT:
// only show format menu options for devices that have been detected
if(g_Game.deviceInternalMemoryBackup == true)
{
g_Game.menuOptions[numMenuOptions].optionText = "Internal Memory";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_INTERNAL;
numMenuOptions++;
}
if(g_Game.deviceCartridgeMemoryBackup == true)
{
g_Game.menuOptions[numMenuOptions].optionText = "Cartridge Memory";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_CARTRIDGE;
numMenuOptions++;
}
if(g_Game.deviceExternalDeviceBackup == true)
{
g_Game.menuOptions[numMenuOptions].optionText = "External Device (Floppy)";
g_Game.menuOptions[numMenuOptions].option = MAIN_OPTION_EXTERNAL;
numMenuOptions++;
}
break;
default:
sgc_core_error("%d is an invalid current state!!", g_Game.state);
resetState();
return 0;
}
g_Game.numMenuOptions = numMenuOptions;
return numMenuOptions;
}
// helper function to take the cursor index and return the value
// of the menu option
unsigned int getMenuOptionByIndex(unsigned int index)
{
if(index >= g_Game.numMenuOptions)
{
sgc_core_error("Invalid index %d for menu options (%d)!!", index, g_Game.numMenuOptions);
resetState();
return -1;
}
return g_Game.menuOptions[index].option;
}
// draws the main option screen
// Number of options are hardcoded
void main_draw(void)
{
unsigned int y = 0;
if(g_Game.state != STATE_MAIN)
{
return;
}
// heading
jo_printf(HEADING_X, HEADING_Y + y++, "Save Game Copier Ver %s", VERSION);
jo_printf(HEADING_X, HEADING_Y + y++, HEADING_UNDERSCORE);
y = 0;
// options
for(unsigned int i = 0; i < g_Game.numMenuOptions; i++)
{
jo_printf(OPTIONS_X, OPTIONS_Y + i, g_Game.menuOptions[i].optionText);
}
// cursor
jo_printf(g_Game.cursorPosX, g_Game.cursorPosY + g_Game.cursorOffset, ">>");
return;
}
// checks for up/down movement for the cursor
// erases the old one and draws a new one
// savesPage is set to true if the cursor is for the list saves page
void moveCursor(bool savesPage)
{
int cursorOffset = g_Game.cursorOffset;
int maxCursorOffset = g_Game.numStateOptions;
// do nothing if there are no options
// this can happen if we select a backup device with no saves for example
if(g_Game.numStateOptions == 0)
{
return;
}
//
// check for up/down which moves up or down the list by 1
//
if (jo_is_pad1_key_pressed(JO_KEY_UP))
{
if(g_Game.input.pressedUp == false)
{
cursorOffset--;
}
g_Game.input.pressedUp = true;
}
else
{
g_Game.input.pressedUp = false;
}
if (jo_is_pad1_key_pressed(JO_KEY_DOWN))
{
if(g_Game.input.pressedDown == false)
{
cursorOffset++;
}
g_Game.input.pressedDown = true;
}
else
{
g_Game.input.pressedDown = false;
}
//
// check for left/right which moves up or down the list by a page
//
if (jo_is_pad1_key_pressed(JO_KEY_LEFT))
{
if(g_Game.input.pressedLeft == false)
{
cursorOffset -= MAX_SAVES_PER_PAGE;
}
g_Game.input.pressedLeft = true;
}
else
{
g_Game.input.pressedLeft = false;
}
if (jo_is_pad1_key_pressed(JO_KEY_RIGHT))
{
if(g_Game.input.pressedRight == false)
{
cursorOffset += MAX_SAVES_PER_PAGE;
}
g_Game.input.pressedRight = true;
}
else
{
g_Game.input.pressedRight = false;
}
// if we moved the cursor, erase the old
if(cursorOffset != g_Game.cursorOffset)
{
if(savesPage == true)
{
jo_printf(g_Game.cursorPosX, g_Game.cursorPosY + (g_Game.cursorOffset % MAX_SAVES_PER_PAGE), " ");
}
else
{
jo_printf(g_Game.cursorPosX, g_Game.cursorPosY + g_Game.cursorOffset, " ");
}
}
// validate the number of lives
if(cursorOffset < 0)
{
cursorOffset = maxCursorOffset - 1;
}
if(cursorOffset >= maxCursorOffset)
{
cursorOffset = 0;
}
g_Game.cursorOffset = cursorOffset;
}
// handles input on the main screen
void main_input(void)
{
unsigned int option;
if(g_Game.state != STATE_MAIN)
{
return;
}
// did the player hit start
if(jo_is_pad1_key_pressed(JO_KEY_START) ||
jo_is_pad1_key_pressed(JO_KEY_A) ||
jo_is_pad1_key_pressed(JO_KEY_C))
{
if(g_Game.input.pressedStartAC == false)
{
g_Game.input.pressedStartAC = true;
option = getMenuOptionByIndex(g_Game.cursorOffset);
switch(option)
{
case MAIN_OPTION_INTERNAL:
{
g_Game.backupDevice = JoInternalMemoryBackup;
transitionToState(STATE_LIST_SAVES);
return;
}
case MAIN_OPTION_CARTRIDGE:
{
g_Game.backupDevice = JoCartridgeMemoryBackup;
transitionToState(STATE_LIST_SAVES);
return;
}
case MAIN_OPTION_EXTERNAL:
{
g_Game.backupDevice = JoExternalDeviceBackup;
transitionToState(STATE_LIST_SAVES);
return;
}
case MAIN_OPTION_SATIATOR:
{
g_Game.backupDevice = SatiatorBackup;
transitionToState(STATE_LIST_SAVES);
return;
}
case MAIN_OPTION_MODE:
{
g_Game.backupDevice = MODEBackup;
transitionToState(STATE_LIST_SAVES);
return;
}
case MAIN_OPTION_CD:
{
g_Game.backupDevice = CdMemoryBackup;
transitionToState(STATE_LIST_SAVES);
return;
}
case MAIN_OPTION_FORMAT:
{
transitionToState(STATE_FORMAT);
return;
}
case MAIN_OPTION_DUMP_MEMORY:
{
g_Game.backupDevice = MemoryBackup;
transitionToState(STATE_DUMP_MEMORY);
return;
}
case MAIN_OPTION_COLLECT:
{
transitionToState(STATE_COLLECT);
return;
}
case MAIN_OPTION_CREDITS:
{
transitionToState(STATE_CREDITS);
return;
}
case MAIN_OPTION_EXIT:
{
jo_core_exit_to_multiplayer();
return;
}
case MAIN_OPTION_EXIT_SATIATOR:
{
satiatorReboot();
return;
}
case MAIN_OPTION_REBOOT:
{
jo_core_restart_saturn();
return;
}
default:
{
sgc_core_error("Invalid main option!!");
return;
}
}
}
}
else
{
g_Game.input.pressedStartAC = false;
}
// update the cursor
moveCursor(false);
return;
}
int compareSaveName (const void * a, const void * b)
{
PSAVES aSave = (PSAVES)a;
PSAVES bSave = (PSAVES)b;
return strcmp(aSave->name, bSave->name);
}
// draws the list saves screen
void listSaves_draw(void)
{
int result = 0;
if(g_Game.state != STATE_LIST_SAVES)
{
return;
}
result = getBackupDeviceName(g_Game.backupDevice, &g_Game.backupDeviceName);
if(result != 0)
{
transitionToState(STATE_PREVIOUS);
return;
}
jo_printf(HEADING_X, HEADING_Y, "%s", g_Game.backupDeviceName);
jo_printf(HEADING_X, HEADING_Y + 1, HEADING_UNDERSCORE);
if(g_Game.listedSaves == false)
{
int count = 0;
// BUP devices
if(g_Game.backupDevice == JoInternalMemoryBackup ||
g_Game.backupDevice == JoCartridgeMemoryBackup ||
g_Game.backupDevice == JoExternalDeviceBackup ||
g_Game.backupDevice == CdMemoryBackup ||
g_Game.backupDevice == SatiatorBackup ||
g_Game.backupDevice == MODEBackup)
{
jo_memset(g_Saves, 0, sizeof(g_Saves));
g_Game.listedSaves = true;
// read the saves meta data
count = listSaveFiles(g_Game.backupDevice, g_Saves, COUNTOF(g_Saves));
if(count >= 0)
{
// sort the saves here
qsort(g_Saves, count, sizeof(g_Saves[0]), compareSaveName);
// update the count of saves
g_Game.numSaves = count;
}
else
{
// something went wrong
transitionToState(STATE_PREVIOUS);
return;
}
}
else
{
// TODO: add Satiator support here
g_Game.listedSaves = true;
g_Game.numSaves = 0;
}
}
if(g_Game.numSaves > 0)
{
int i = 0;
int j = 0;
// header
jo_printf(OPTIONS_X, OPTIONS_Y, "%-11s %-10s %6s", "Save Name", "Comment", "Bytes");
// zero out the save print fields otherwise we will have stale data on the screen
// when we go to other pages
for(i = 0; i < MAX_SAVES_PER_PAGE; i++)
{
jo_printf(OPTIONS_X, OPTIONS_Y + i + 1, " ");
}
// print up to MAX_SAVES_PER_PAGE saves on the screen
for(i = (g_Game.cursorOffset / MAX_SAVES_PER_PAGE) * MAX_SAVES_PER_PAGE, j = 0; i < g_Game.numSaves && j < MAX_SAVES_PER_PAGE; i++, j++)
{
jo_printf(OPTIONS_X, OPTIONS_Y + (i % MAX_SAVES_PER_PAGE) + 1, "%-11s %-10s %6d", g_Saves[i].name, g_Saves[i].comment, g_Saves[i].datasize);
}
g_Game.numStateOptions = g_Game.numSaves;
}
else
{
jo_printf(OPTIONS_X, OPTIONS_Y, "Found 0 saves on the device");
}
if(g_Game.numStateOptions > 0)
{
// copy the save data
strncpy(g_Game.saveFilename, g_Saves[g_Game.cursorOffset].filename, MAX_FILENAME);
g_Game.saveFilename[MAX_FILENAME - 1] = '\0';
strncpy(g_Game.saveName, g_Saves[g_Game.cursorOffset].name, MAX_SAVE_FILENAME);
g_Game.saveName[MAX_SAVE_FILENAME - 1] = '\0';
strncpy(g_Game.saveComment, g_Saves[g_Game.cursorOffset].comment, MAX_SAVE_COMMENT);
g_Game.saveComment[MAX_SAVE_COMMENT - 1] = '\0';
g_Game.saveLanguage = g_Saves[g_Game.cursorOffset].language;
g_Game.saveDate = g_Saves[g_Game.cursorOffset].date;
g_Game.saveFileSize = g_Saves[g_Game.cursorOffset].datasize;
jo_printf(g_Game.cursorPosX, g_Game.cursorPosY + g_Game.cursorOffset % MAX_SAVES_PER_PAGE, ">>");
}
return;
}
// handles input on the list saves screen
// B returns to the main menu
void listSaves_input(void)
{
if(g_Game.state != STATE_LIST_SAVES)
{
return;
}
// did the player hit start
if(jo_is_pad1_key_pressed(JO_KEY_START) ||
jo_is_pad1_key_pressed(JO_KEY_A) ||
jo_is_pad1_key_pressed(JO_KEY_C))
{
if(g_Game.input.pressedStartAC == false)
{
g_Game.input.pressedStartAC = true;
if(g_Game.numStateOptions == 0)
{
// there are 0 saves, just return back to the main screen
transitionToState(STATE_PREVIOUS);
return;
}
transitionToState(STATE_DISPLAY_SAVE);
return;
}
}
else
{
g_Game.input.pressedStartAC = false;
}
if(jo_is_pad1_key_pressed(JO_KEY_B))
{
if(g_Game.input.pressedB == false)
{
g_Game.input.pressedB = true;
transitionToState(STATE_PREVIOUS);
return;
}
}
else
{
g_Game.input.pressedB = false;
}
// update the cursor
moveCursor(true);
return;
}
// draws the display save screen and the display memory screen
void displaySave_draw(void)
{
int result = 0;
int y = 0;
unsigned char* saveFileData = NULL;
unsigned int saveFileSize = 0;
jo_backup_date jo_date = {0};
if(g_Game.state != STATE_DISPLAY_SAVE && g_Game.state != STATE_DISPLAY_MEMORY)
{
return;
}
if(g_Game.state == STATE_DISPLAY_SAVE)
{
saveFileData = (unsigned char*)g_Game.saveBupHeader + sizeof(BUP_HEADER);
saveFileSize = g_Game.saveFileSize;
}
else
{
saveFileData = (unsigned char*)g_Game.dumpMemoryAddress;
saveFileSize = g_Game.dumpMemorySize;
}
// heading
if(g_Game.state == STATE_DISPLAY_SAVE)
{
jo_printf(HEADING_X, HEADING_Y, "Save Info");
}
else
{
jo_printf(HEADING_X, HEADING_Y, "Memory Info");
}
jo_printf(HEADING_X, HEADING_Y + 1, HEADING_UNDERSCORE);
// only compute the MD5 hash once
if(g_Game.md5Calculated == false)
{
if(g_Game.state == STATE_DISPLAY_SAVE)
{
result = readSaveFile(g_Game.backupDevice, g_Game.saveFilename, (unsigned char*)g_Game.saveBupHeader, g_Game.saveFileSize + sizeof(BUP_HEADER));
if(result != 0)
{
sgc_core_error("Failed to read the save!!");
transitionToState(STATE_PREVIOUS);
return;
}
}
// print messages to the user so that can get an estimate of the time for longer operations
result = calculateMD5Hash(saveFileData, saveFileSize, g_Game.md5Hash);
if(result != 0)
{
// something went wrong
transitionToState(STATE_PREVIOUS);
return;
}
result = getBackupDeviceName(g_Game.backupDevice, &g_Game.backupDeviceName);