Workaround large X values in MAME draw_text()

draw_text-workaround.lua

function main()
camx = band(mem:read_i16(0x2034E2),0xFF80)/0x80

--Sprites
--spradr 0x20869A, 72 offset
adr = 0x20869A - 0x72
for a = 0,0x60,1 do
adr = adr + 0x72
local active = band(mem:read_u8(adr),0x80)/0x80
local y = band(mem:read_i16(adr + 0x2A),0xFF80)/0x80
local x = band(mem:read_i16(adr + 0x2C),0xFF80)/0x80
local boxpnt = mem:read_u32(adr + 0x1A)

local hp = mem:read_u16(adr + 0x50)

if active == 1 then
boxes = 0
        if ((y-8) < (gui:width()-9)) then
          gui:draw_text(y-8,x-camx,hp)
        end
        repeat boxes = boxes + 1
        until mem:read_i16(boxpnt + (boxes * 8)) == 0x00


        for nbox = 0,boxes-1,1 do
                colbox(boxpnt+(nbox*8),y,x-camx)

        end

        drawaxis(y,x - camx,2,0xFFFFFFFF)
end
end