Mega Man ZX enemy GUI stuff

currentIndex = 1
maxIndex = 30
firstSpawnIndex = 0x02153A1A
indexOffset = 0xD0

-- Custom commands
local lastInput = {}
function executeCustomCommands()
    local Input = input.get()

    if Input.F and not lastInput.F then
        increaseIndex()
        -- if you reached an illegal index, continue increasing it
        -- stop at 1 in any case to prevent an endless loop
        local loopCounter = maxIndex
        while loopCounter > 0 and controlSpawnByte(getIndexAddr(currentIndex)) == false do
        increaseIndex()
        loopCounter = loopCounter - 1
        end
    -- Print a notice for the user
    print("New index = " .. currentIndex)
    end
    if Input.D and not lastInput.D then
        print("Number of spawned enemies: " .. countEnemies())
    end
    lastInput = Input
end

function countEnemies()
    local counter = 0
    local i = 1
    while i <= maxIndex do
        if controlSpawnByte2(getIndexAddr(i)) then
            counter = counter + 1
        end
        i = i + 1
    end
    return counter
end

function increaseIndex()
    currentIndex = currentIndex + 1
    if currentIndex > maxIndex then
        currentIndex = 1
    end
end

function getIndexAddr(index)
    return firstSpawnIndex + (index - 1) * indexOffset
end

function controlSpawnByte(spawnByte)
    local value = memory.readbyte(spawnByte)
    return value ~= 0
end

function controlSpawnByte2(spawnByte)
    local value = memory.readbyte(spawnByte)
    return value == 5 or value == 0x17 or value == 7 or value == 4
end

function drawEnemyInfo(spawnByte)
    local spawnValue = memory.readbyte(spawnByte)
    if controlSpawnByte(spawnByte) then
        addr1 = spawnByte - 0x10
        value1 = memory.readbyte(addr1)
        addr2 = spawnByte - 0xF
        value2 = memory.readbyte(addr2)
        addr3 = spawnByte - 0xA
        value3 = memory.readbyte(addr3)
        status = spawnByte - 0x8
        value4 = memory.readbyte(status)
        AI = spawnByte - 0x6
        value5 = memory.readbyte(AI)
        addr6 = spawnByte - 0x4
        value6 = memory.readbyte(addr6)
        addr7 = spawnByte - 0x3
        value7 = memory.readbyte(addr7)
        spawn4 = spawnByte - 0x2
        value8 = memory.readdword(spawn4)
        changeCrash = spawnByte + 0x1
        value9 = memory.readbyte(changeCrash)
        addr10 = spawnByte + 0x10
        value10 = memory.readbyte(addr10)
        addr11 = spawnByte + 0x11
        value11 = memory.readbyte(addr11)
        X = spawnByte + 0x42
        value12 = memory.readdwordsigned(X)
        Y = spawnByte + 0x46
        value13 = memory.readdwordsigned(Y)
        Xspeed = spawnByte + 0x4A
        value14 = memory.readdwordsigned(Xspeed)
        Yspeed = spawnByte + 0x4E
        value15 = memory.readdwordsigned(Yspeed)
        health = spawnByte + 0x90
        value16 = memory.readbyte(health)
        home = spawnByte + 0xA6
        value17 = memory.readdword(home)
        addr18 = spawnByte + 0xAE
        value18 = memory.readbyte(addr18)
        addr19 = spawnByte + 0xB2
        value19 = memory.readbyte(addr19)
        gui.text(1, 1, string.format ("%X", addr1) .. ": after death weird (try 0x13): " .. "0x" .. string.format ("%X", value1))
        gui.text(1, 10, string.format ("%X", addr2) .. ": RB=visibility; LB=facing: " .. "0x" .. string.format ("%X", value2))
        gui.text(1, 20, string.format ("%X", addr3) .. ": LB=huge hitbox possible: " .. "0x" .. string.format ("%X", value3))
        gui.text(1, 30, "Status: " .. value4)
        gui.text(1, 40, "AI: " .. value5)
        gui.text(1, 50, "Animation wait timer: " .. value6)
        gui.text(1, 60, string.format ("%X", spawn4) .. ": Spawn 4 bytes: " .. "0x" .. string.format ("%X", value8), "#00FF00")
        gui.text(1, 70, "If changed, crashes: " .. value9)
        gui.text(1, 80, string.format ("%X", addr10) .. ": " .. value10)
        gui.text(1, 90, string.format ("%X", addr11) .. ": " .. value11)
        gui.text(1, 100, string.format ("%X", X) .. ": X: " .. value12, "#00FF00")
        gui.text(1, 110, string.format ("%X", Y) .. ": Y: " .. value13, "#00FF00")
        gui.text(1, 120, string.format ("%X", Xspeed) .. ": X Speed: " .. value14)
        gui.text(1, 130, string.format ("%X", Yspeed) .. ": Y Speed: " .. value15)
        gui.text(1, 140, "Health: " .. value16, "#00FF00")
        gui.text(1, 150, "Home: " .. value17)
        gui.text(1, 160, string.format ("%X", addr18) .. ": " .. value18)
        gui.text(1, 170, string.format ("%X", addr19) .. ": " .. value19)
        gui.text(1, 180, "Spawn byte: " .. "0x" .. string.format ("%X", spawnValue))
    end
end

function drawGUI()
    executeCustomCommands()
    spawnByte = getIndexAddr(currentIndex)
    drawEnemyInfo(spawnByte)
end

gui.register(drawGUI)