MM JP 1.0 brute force

-- brute_force.lua
--
-- Brute force search for some interesting results of Index Warp.
-- Used for Majora's Mask (J)
--
-- Author: @Faschz (modified by Exodus)
-- Created: April 10th, 2019

MAP_INDEX_ADDR = 0x3FDC40

MENU_ADDR = 0x3FDBEC
DEBUG_ADDR = 0x3FDBEE
NOTEBOOK_ADDR = 0x3FDBF0

BASE_ADDRESS_LENGTH = 0x1CAEC8

file = io.open('debug_JP_1.0.txt', 'w')

for index = -32768, 32767 do
    -- Load state ready to select a Song of Soaring location
    savestate.loadslot(2)

    length = mainmemory.read_s16_be(bit.band(BASE_ADDRESS_LENGTH + bit.lshift(index, 1), 0xFFFFFF))

    -- Write the index
    mainmemory.write_s16_be(MAP_INDEX_ADDR, index)

    -- Select the index
    joypad.set({["A"] = true}, 1)
    emu.frameadvance()
    joypad.set({["A"] = false}, 1)

    -- Wait for the textbox to appear
    for f=0,60 do
        emu.frameadvance()
    end

    goodmenu = false
    gooddebug = false

    print(index.." ("..length..")")
    file:write(index.." ("..length..")\n")

    -- Begin checking for the interesting results
    menub = mainmemory.read_u16_be(MENU_ADDR)
    if (menub >= 9 and menub <= 14) or
            (menub >= 16 and menub <= 18) then
        print("Menu: "..menub)
        file:write("Menu: "..menub.."\n")
        goodmenu = true
    end

    debugb = mainmemory.read_u16_be(DEBUG_ADDR)
    if debugb == 1 or debugb == 2 then
        print("Debug: "..debugb)
        file:write("Debug: "..debugb.."\n")
        gooddebug = true
    end

    noteb = mainmemory.readbyte(NOTEBOOK_ADDR)
    if noteb ~= 0 then
        print("Notebook: "..noteb)
        file:write("Notebook: "..noteb.."\n")
    end

    if((goodmenu == true) and (gooddebug == true)) then
        print("SOLUTION")
        file:write("SOLUTION\n")
    end

end

file:close()

print("DONE!")