a-week-with-garfield.lua

local types = {
  [0] = "+5",
  [1] = "Invinc.",
  [2] = "Key",
  [3] = "+2",
  [4] = "Shoes",
  [5] = "W3",
  [6] = "W1",
  [7] = "-2",
  [9] = "W2"
}
emu.addEventCallback(function ()
    local x = (emu.read(0x333, emu.memType.cpuDebug)*0x100) + ((emu.read(0x332, emu.memType.cpuDebug)-0x20)*8) + (emu.read(0x334, emu.memType.cpuDebug)%8)
    if (x>=0) then
        emu.drawRectangle(-1,33,(x/15)-2,5,0x50A0FF,0x50A0FF)
        for i=0,63 do
            local p = 0xB9e0+i*4
            local px = (emu.read(p,emu.memType.cpuDebug)*16) + math.floor(emu.read(p+1, emu.memType.cpuDebug)/16)
            local py = emu.read(p+1,emu.memType.cpuDebug)%16
            local pt = emu.read(p+2,emu.memType.cpuDebug)
            if (px>=256) then break end
            emu.drawRectangle(px*16-x,py*16+40,15,25,0)
            if (types[pt]) then
                emu.drawString(px*16-x+1,py*16+41,types[pt])
            else
                emu.drawString(px*16-x+1,py*16+41,pt)
            end
        end
    end
end, emu.eventType.nmi)