while true do

-- gui hud
gui.opacity(0.70)
gui.drawbox(60,3,210,36,"#00008b", "#dcdcdc")

-- Weapon
--- Weapon memory address is variable!!
weapon = memory.readbyte(0x0200e7f2)
if weapon == 0 then gui.text(65,21, "[Standard gun]")
elseif weapon == 1 then gui.text(65,21, "[Slime gun]", "#7fff00")
elseif weapon == 2 then gui.text(65,21, "[Flame thrower]", "#ffa500")
elseif weapon == 3 then gui.text(65,21, "[Ice gun]", "#00ffff")
elseif weapon == 4 then gui.text(65,21, "[Laser shotgun]", "#ff00ff")
elseif weapon == 5 then gui.text(65,21, "[Laser beam]", "#ff4500")
elseif weapon == 6 then gui.text(65,21, "[Multi gun]", "#ffff00")
elseif weapon == 7 then gui.text(65,21, "[Light ball]", "yellow")
else gui.text(64,21, "unknown weapon") end

-- Ammo
gui.opacity(0.80)
if weapon == 0 then gui.text(64,5, "Ammo: -")
else gui.text(64,5, "Ammo: " ..memory.readbyte(0x03000472) + 256*memory.readbyte(0x03000473)) end
gui.text(64,13, "Grenades: " ..memory.readbyte(0x03000474))

-- Position, Speed, Boss HP
--- Boss HP and X-Position addresses are variable!!
--- TODO: Implement X-Pos display
--- TODO: Implement Boss HP display

gui.text(130,5, "X-Speed: " ..memory.readbytesigned(0x03000449))
gui.text(130,13, "Enemies to kill: "..memory.readbyte(0x03000328))


---- LEVEL2
-- Heli 30 HP
-- Tank 50 HP
-- FBI agent 50 HP
-- Statue ~54 HP
-- Building 65 HP
-- boss ?? HP

vba.frameadvance()
end