// Game:           Prince of Persia v1.4
// Emulator:       DOSBox 0.74-3
// DOS version by: ThePedMeister, Karlgamer, WinterThunder, Smathlax, GMP, eien86
// Apple 2 Port:   GMP
// Inspiration:    Shauing, Mattcubing
// Updated:        2021-11-10
// IGT timing:     YES
//
// Base memory path is everything before final offset
// e.g. in ["DOSBox.exe", 0x193C370, 0x1D0F4] base path is the ["DOSBox.exe", 0x193C370].
//
// Base memory paths for versions:
// AppleWin 1.30.3.0: "AppleWin.exe", 0x1F5498


state("AppleWin")
{
    byte Level      : "AppleWin.exe", 0x1F5498, 0x031C;        // Shows level 1-14 changes as door is entered
    ushort Ticks    : "AppleWin.exe", 0x1F5498, 0x0306;        // Ticks one per frame, pauses during loads and resets to 0 at start of the game
    byte EndGame    : "AppleWin.exe", 0x1F5498, 0xE14A;        // Changes to 255 at the end.
    byte Reset1     : "AppleWin.exe", 0x1F5498, 0xC11E;        // Reset flags. 0 in menu and 1 during levels.
    byte Reset2     : "AppleWin.exe", 0x1F5498, 0xC158;        // ^
    byte Reset3     : "AppleWin.exe", 0x1F5498, 0xC1CB;        // ^^
}

startup
{
    if (timer.CurrentTimingMethod != TimingMethod.GameTime) {
        DialogResult mbox = MessageBox.Show(timer.Form,
        "This game uses an in-game timer as the primary timing method.\nWould you like to switch to Game Time?",
        "LiveSplit | Prince of Persia (Apple II)",
        MessageBoxButtons.YesNo);

        if (mbox == DialogResult.Yes) {
            timer.CurrentTimingMethod = TimingMethod.GameTime;
        }
    }
}

start
{
    return (current.Level == 1 && current.Ticks == 0);
}

gameTime
{
    double secondsElapsed = current.Ticks / 12.0;

    // Hack for splits.io issue - if last split is empty, gameTime won't be available
    if (old.Level == 13 && current.Level == 14) {
        secondsElapsed -= 0.002;
    }

    return TimeSpan.FromSeconds(secondsElapsed);
}

reset
{
    return (current.Reset1 == 0 && current.Reset2 == 0 && current.Reset3 == 0);
}

split
{
    // If level changes or if currently on level 14 and EndGame changes to 255 (FF in hexadecimal)
    return ((old.Level == current.Level - 1) || (current.Level == 14 && current.EndGame == 0xFF));
}

isLoading
{
    return true;
}