// Metal Gear: Portable Ops Autosplitter
// For use with the PPSSPP Emulator
// Created by NickRPGreen 

// v1.03:
// - New Game + support

state("LiveSplit") {}

startup{
    vars.U = new ExpandoObject();
    var u = vars.U;
    u.Log = (Action<string>)(x => print("MPO ASL - " + x.ToString()));
    Assembly.Load(File.ReadAllBytes("Components/emu-help-v3")).CreateInstance("PSP");
    
    u.USA = vars.Helper.Make<byte>(0x089E9AF2); // U = 85;
    u.PAL = vars.Helper.Make<byte>(0x089F1A92); // E = 69;
    u.JAP = vars.Helper.Make<byte>(0x089E9BA2); // J = 74;
}

init {
    var u = vars.U;
    u.ready = false;
    u.warning = false;
    u.started = false;
    u.tempIGT = 0;
}

update {
    var u = vars.U;
    if(!u.ready){
        vars.Helper.Update();
        u.region = null;

        if(u.USA.Current == 85){
            u.region = "USA";
            u.IGT = vars.Helper.Make<uint>(0x08a5cb90);
            u.LastIGT = vars.Helper.Make<uint>(0x08a24e20); // IGT of the last playthrough on the same save, is subtracted from IGT for NG+
            u.ScreenID = vars.Helper.Make<uint>(0x08a1c2f8); // 0 on reset
            u.GameState = vars.Helper.Make<byte>(0x08a18e6c); // 20 = Mission, 30 = Stage Select, 60 = Cutscene;
            //u.Boss = vars.Helper.Make<uint>(0x08a24e60);
            u.Results = vars.Helper.Make<uint>(0x08a51e08); // 10 = Results - also triggers just before credits start, providing final split
            u.AreaID = vars.Helper.Make<uint>(0x08a24dcc);
            u.Log("US version detected. Memory watchers compiled");
        }
        else if(u.PAL.Current == 69){
            u.region = "PAL";
            u.IGT = vars.Helper.Make<uint>(0x08A51AA0);
            u.LastIGT = vars.Helper.Make<uint>(0x08A78DB0); // IGT of the last playthrough on the same save, is subtracted from IGT for NG+
            u.ScreenID = vars.Helper.Make<uint>(0x08A70384); // 0 on reset
            u.GameState = vars.Helper.Make<byte>(0x08A22D1C); // 20 = Mission, 30 = Stage Select, 60 = Cutscene;
            //u.Boss = vars.Helper.Make<uint>(0x08a24e60);
            u.Results = vars.Helper.Make<uint>(0x08A47328); // 11 = Results - also triggers just before credits start, providing final split
            u.AreaID = vars.Helper.Make<uint>(0x08A78ED4);
            u.Log("PAL version detected. Memory watchers compiled");
        }
        else if(u.JAP.Current == 74){
            u.region = "JAP";
            u.IGT = vars.Helper.Make<uint>(0x08A1C3C8);
            u.LastIGT = vars.Helper.Make<uint>(0x08A24EE0); // IGT of the last playthrough on the same save, is subtracted from IGT for NG+
            u.ScreenID = vars.Helper.Make<uint>(0x08A1C3B8); // 0 on reset
            u.GameState = vars.Helper.Make<byte>(0x08A22D1C); // 20 = Mission, 30 = Stage Select, 60 = Cutscene;
            //u.Boss = vars.Helper.Make<uint>(0x08a24e60);//
            u.Results = vars.Helper.Make<uint>(0x08A51EC8); // 10 = Results - also triggers just before credits start, providing final split
            u.AreaID = vars.Helper.Make<uint>(0x08A2F498);
            u.Log("JAP version detected. Memory watchers compiled");
        }
        else if(!u.warning){
            u.warning = true;
            u.Log("Version not detected, awaiting game launch");
            return false;
        }
        else {
            return false;
        }
        u.ready = true;
    }

    vars.Helper.Update();

    if((u.region == "USA" && u.USA.Changed) || (u.region == "PAL" && u.PAL.Changed) || (u.region == "JAP" && u.JAP.Changed)){
        u.ready = false;
        u.warning = false;
        u.Log("ROM unloaded, scanning for new version");
    }
    current.ScreenID = u.ScreenID.Current;
    current.AreaID = u.AreaID.Current;
    current.GameState = u.GameState.Current;
    current.Results = u.Results.Current;
    current.IGT = u.IGT.Current;
    current.LastIGT = u.LastIGT.Current;

    if(!u.started && u.Results.Current > 30){
        u.started = true;
    }
}

gameTime {
    var u = vars.U;
    if(u.started){
        return TimeSpan.FromMilliseconds((u.IGT.Current - u.LastIGT.Current)*1000/300);
    }
    else {
        return TimeSpan.FromMilliseconds((u.IGT.Current - u.tempIGT)*1000/300);
    }
}

start {
    var u = vars.U;
    return (u.ScreenID.Old == 1768189541 || u.ScreenID.Old == 0) && u.ScreenID.Current == 1935764582;
}

onStart {
    var u = vars.U;
    if(u.LastIGT.Current == 0){
        u.started = true;
    }
    else{
        u.started = false;
        u.tempIGT = u.IGT.Current;
    }
}

isLoading {
    return true;
}

split {
    var u = vars.U;
    // Split on area change whilst preventing splitting when returning to Prison to rescue Roy
    if (u.AreaID.Changed && u.AreaID.Current != 4){
        return true;
    }
    // Split on credits start
    if(u.AreaID.Current == 20){
        if ((u.region == "USA" || u.region == "JAP") && u.Results.Changed && u.Results.Current == 10){
            return true;
        }
        if (u.region == "PAL" && u.Results.Changed && u.Results.Current == 11){
            return true;
        }
    }
}

reset {
    return vars.U.ScreenID.Current == 0;
}