smurfs lua

AddrXWrap       = 0x0037;
AddrXScreen     = 0x0038;
AddrXSpd        = 0x006B;
AddrY           = 0x0041;
AddrYScreen     = 0x0042;
AddrYSpd        = 0x006F;

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;

    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>2 then
        XDiffColor = "green"
    elseif XDiff<2 then
        XDiffColor = "red"
    else
        XDiffColor = "white"
    end

    Y=memory.readbyte(AddrY);
    YScreen=memory.readbyte(AddrYScreen);
    Y = YScreen*256+Y;

    YDiff = Y - PrevY;
    PrevY = Y;

    --Speed
    XSpd=memory.read_s8(AddrXSpd);

    XSpdColor="white"

    YSpd=memory.read_s8(AddrYSpd);

    gui.pixelText(60, 3, string.format("% 5d",X),XColor)
    gui.pixelText(60, 12, string.format("% 5d",XSpd),XSpdColor)
    gui.pixelText(60, 21, string.format("% 5d",XDiff),XDiffColor)

    gui.pixelText(95, 3, string.format("% 5d",Y))
    gui.pixelText(95, 11, string.format("% 5d",YSpd))
    --gui.pixelText(65, 27, string.format("% 5d",YDiff))

end