Function loadState

arm9/source/inputhelper.cpp:970–1086

}

int loadState(int stateNum) {
    FILE *inFile;
    StateStruct state;
    char statename[100];
    int version;

    memset(&state, 0, sizeof(StateStruct));

    if (stateNum == -1)
        siprintf(statename, "%s.yss", basename);
    else
        siprintf(statename, "%s.ys%d", basename, stateNum);
    inFile = fopen(statename, "r");

    if (inFile == 0) {
        printMenuMessage("State doesn't exist.");
        return 1;
    }

    fread(&version, sizeof(int), 1, inFile);

    if (version == 0 || version > STATE_VERSION) {
        printMenuMessage("State is from an incompatible version.");
        return 1;
    }

    fread((char*)bgPaletteData, 1, sizeof(bgPaletteData), inFile);
    fread((char*)sprPaletteData, 1, sizeof(sprPaletteData), inFile);
    fread((char*)vram, 1, sizeof(vram), inFile);
    fread((char*)wram, 1, sizeof(wram), inFile);
    fread((char*)hram, 1, 0x200, inFile);

    if (version <= 4 && ramSize == 0x04)
        // Value "0x04" for ram size wasn't interpreted correctly before
        fread((char*)externRam, 1, 0x2000*4, inFile);
    else
        fread((char*)externRam, 1, 0x2000*numRamBanks, inFile);

    fread((char*)&state, 1, sizeof(StateStruct), inFile);

    /* MBC-specific values have been introduced in v3 */
    if (version >= 3) {
        switch (MBC) {
            case MBC3:
                if (version == 3) {
                    u8 rtcReg;
                    fread(&rtcReg, 1, sizeof(u8), inFile);
                    if (rtcReg != 0)
                        currentRamBank = rtcReg;
                }
                break;
            case HUC3:
                fread(&HuC3Mode,  1, sizeof(u8), inFile);
                fread(&HuC3Value, 1, sizeof(u8), inFile);
                fread(&HuC3Shift, 1, sizeof(u8), inFile);
                break;
        }