/**
* \brief Used to setup the game's eeprom block on first run to prevent garbage data. Checks for a magic number to verify formatting.
*
* \return 0 if block is formatted correctly for this game, 1 if not.
*/
u8 checkEeprom(void)
{
struct EepromBlockStruct ebs; //create temp eeprom block struct for use
ebs.id = save_block; //assign to this game's block id
if(EepromReadBlock(ebs.id, &ebs)==0) //reads block values into temp struct, if successful, moves on
{
if(ebs.data[17] == 0x17) //looks for magic number
return 0; //block was read, and magic number was present, block is good
}
return 1; //something failed along the way, block is bad
}
/**
* \brief Loads saved scores from eeprom.
*
* Loads scores from eeprom and saves them into current game memory for use.
* \param index0 Lower boundary score to load (inclusive)
* \param index1 Upper boundary score to load (inclusive)
*/
void LoadScore(u8 index0, u8 index1)
{
//Initialize a struct and define the block id
struct EepromBlockStruct ebs; //create a temporary eeprom block struct
ebs.id = save_block; //set it to read this game's block
if(EepromReadBlock(ebs.id, &ebs)==0) //read data from eeprom into the struct, if it works, proceed
{
for(u8 i = index0; i<=index1; i++) //read scores from index0 to index1 and save them into our top score array for use
topscores[i]=(u8)ebs.data[i];
}
}
/**
* Main code
*/
int main() {
SetTileTable(tiles);
SetSpritesTileTable(tiles);
SetFontTilesIndex(TILE_FIRST_FONT);
InitMusicPlayer(patches);
TriggerNote(3,SOUND_INTRO_MUSIC,20,0xff);
SetUserPostVsyncCallback(vsync_callback);
// read custom configuration from eeprom
EepromReadBlock(129, &eeprom_data);
eeprom_data.id = 129;
game();
}
void loadEeprom(){
//load eeprom savegame
u8 code=EepromReadBlock(EEPROM_ID,(struct EepromBlockStruct*)&saveGame);
if(code==EEPROM_ERROR_BLOCK_NOT_FOUND || saveGame.blankMarker==0xffffffff){
//setup eeprom save game block
saveGame.id=EEPROM_ID;
struct EepromBlockStruct* ptr=(struct EepromBlockStruct*)&saveGame;
for(u8 i=0;i<30;i++){
ptr->data[i]=0;
}
EepromWriteBlock((struct EepromBlockStruct*)&saveGame);
}
}
