frog game lua 2

AddrXWrap       = 0x0642;
AddrXScreen     = 0x0658;
AddrXSub        = 0x062C;
AddrXSpd        = 0x06C6;
AddrXSpdSub     = 0x06B0;
AddrY           = 0x0684;
AddrYSub        = 0x066E;
AddrYSpd        = 0x06F2;
AddrYSpdSub     = 0x06DC;

PrevX = 0
XDiff = 0
PrevY = 0
YDiff = 0

XPosTable = {}

gui.defaultPixelFont("fceux")

while true do
    emu.frameadvance();
    --Position
    XWrap=memory.readbyte(AddrXWrap);
    XScreen=memory.readbyte(AddrXScreen);
    X=XScreen*256+XWrap;

    XSub=memory.readbyte(AddrXSub);
    X = (X + (XSub/256))

    XDiff = X - PrevX;
    PrevX = X;

    if (XPosTable[emu.framecount()] == null) then
        XPosTable[emu.framecount()] = X;
        XColor = "white";
    elseif (XPosTable[emu.framecount()] == X) then
        XColor = "white";
    elseif (XPosTable[emu.framecount()] < X) then
        XPosTable[emu.framecount()] = X;
        XColor = "green";
    else
        XColor = "red";
    end

    if XDiff>1.5 then
        XDiffColor = "green"
    elseif XDiff<1.5 then
        XDiffColor = "red"
    else
        XDiffColor = "white"
    end

    if XWrap>=0x06 and XWrap<0x80 then
        BoostColor="green";
    elseif XWrap>=0xF6 or XWrap<0x20 then
        BoostColor="white";
    else
        BoostColor="red";
    end;
    XWrap=string.format("%02x",XWrap);

    Y=memory.readbyte(AddrY);
    YSub=memory.readbyte(AddrYSub);

    Y = (Y + (YSub/256))

    YDiff = Y - PrevY;
    PrevY = Y;

    --Speed
    XSpd=memory.read_s8(AddrXSpd);
    XSpdSub=memory.readbyte(AddrXSpdSub);
    XSpd = XSpd + (XSpdSub/256)

    if XSpd<1 then
        XSpdColor="red"
    else
        XSpdColor="white"
    end;

    YSpd=memory.read_s8(AddrYSpd);
    YSpdSub=memory.readbyte(AddrYSpdSub);
    YSpd = YSpd + (YSpdSub/256)

    gui.pixelText(10, 9, string.format("% 9.3f",X),XColor)
    gui.pixelText(10, 18, string.format("% 9.3f",XSpd),XSpdColor)
    gui.pixelText(10, 27, string.format("% 9.3f",XDiff),XDiffColor)

    gui.pixelText(65, 9, string.format("% 9.3f",Y))
    gui.pixelText(65, 18, string.format("% 9.3f",YSpd))
    --gui.pixelText(65, 27, string.format("% 9.3f",YDiff))

    gui.pixelText(1,36,XWrap,BoostColor);

end