ALTTP Randomizer HUD Watcher lua script

ALTTP Randomizer HUD.lua

local timer = 15 * 60

-- sram trace 
local address = 0x1E00
local range = 0x01E0

-- private
local old
local log = {}
local _timer = timer

function hudwatch()
	local new
	memory.usememorydomain("CARTRAM")

	if not old then
		old = memory.readbyterange(address, range)
		return
	end

	new = memory.readbyterange(address, range)
	
	if not tablesequal(old, new) then
		logtablediff(old,new)
		old = new
	end
end

function tablesequal(t1, t2, keys)
	keys = keys or t1

	for k,_ in pairs(keys) do
		if t1[k] ~= t2[k] then
			return false
		end
	end

	return true
end

function logtablediff(t1, t2)
	local v1
	local v2
	
	for k,_ in pairs(t1) do
		v1 = t1[k]
		v2 = t2[k]

		if v1 ~= v2 then
			if log[k] == nil then
				log[k] = { v1 }				
			end
			table.insert(log[k], v2)
		end	
	end
end

function printlog()
	local s
	local sorted = {}

	for k,_ in pairs(log) do
		table.insert(sorted,k)
	end
	table.sort(sorted)

	console.log("---" .. emu.framecount() .. "---")
	for _,k in ipairs(sorted) do
		s = string.format("0x%04X -> %s",k,table.concat(log[k],", "))
		console.log(s)
	end
end

while true do 
	hudwatch()
	_timer = _timer - 1

	if _timer < 1 and log ~= {} then
		printlog()
		log = {}
		_timer = timer
	end

	emu.frameadvance();
end