External-Item-Descriptions/eid_tmtrainer.lua

--[[

This file is only loaded when the game is launched with the "--luadebug" launch option.
This allows mods to have access to your computer's files, which is necessary to read glitched item info that's printed to the game's log file.

Having --luadebug on would allow malicious mods to delete your files, execute command prompt commands, and probably much more.
USE AT YOUR OWN RISK.

]]

local game = Game()

-- glitched items start at 4294967295
local maxNumber = 4294967296
local spawnedItems = 0

local logLocation = os.getenv("SYSTEMDRIVE") .. "/Users/" .. os.getenv("USERNAME") .. "/Documents/My Games/Binding of Isaac Repentance/log.txt"
local logFound = false
local logCursor = 0

local newLogLocation = os.getenv("SYSTEMDRIVE") .. "/Users/" .. os.getenv("USERNAME") .. "/Documents/My Games/Binding of Isaac Repentance/log2.txt"
local secondaryLog = io.open(newLogLocation, "w+")
secondaryLog:write("[EID] For performance and accuracy reasons, reading glitched item descriptions from the log file requires wiping the log regularly, so while you have TMTRAINER, most of the log will be moved here\n")
--test using file:seek instead, to just move our cursor to the start of new text!

--currently english only
local attributeConversions = {
	chain = "",
	active = "On use:",
	pickup_collected = "When you collect a pickup:",
	enemy_kill = "On kill, chance to:",
	
	
	area_damage = "Deal {1} damage to all enemies in the room", 
	add_temporary_effect = "Gain {1} for the room",
	convert_entities = "Convert all {1} in the room to {2}",
	use_active_item = "Use {1}",
	spawn_entity = "Spawn a {1}",
	fart = "Fart with size {1}",
}

local function parseEffectLine(raw)
	local words = {}
	for w in string.gmatch(raw,"%S+") do table.insert(words, w) end
	-- words[1] = "[INFO]", words[2] = "-"
	local effectTrigger = words[3]
	-- words[4] = "->"
	local effectType = words[5]
	local fullEffect = ""
	for i=5,#words do fullEffect = fullEffect .. words[i] .. " " end
	
	local replacements = {}
	local extraText = ""
	-- switch statement for how to handle the words after the effect type
	if effectType == "add_temporary_effect" or effectType == "use_active_item" then
		-- remainder of line = collectible name that's granted for the room
		local name = ""
		for i=6,#words do
			name = name .. words[i]
			if (i ~= #words) then name = name .. " " end
		end
		replacements[1] = name
	elseif effectType == "convert_entities" then
		--figure out how to convert entity numbers
		replacements[1] = words[6]
		replacements[2] = words[8]
	end
	
	local eidString = ""
	eidString = eidString .. (attributeConversions[effectTrigger] or effectTrigger) .. "#"
	eidString = eidString .. (attributeConversions[effectType] or fullEffect) .. extraText .. "#"
	for k,v in ipairs(replacements) do
		eidString = string.gsub(eidString, "{" .. k .. "}", v)
	end
	return eidString
end

--work on how resuming a game works (determine current id by checking if item ids exist)

local function GameStartTMTRAINER(_,isSave)
	local theLog = io.open(logLocation, "r")
	if (theLog == nil) then
		print("[EID] Could not find the log file at " .. logLocation .. "; glitched item descriptions won't work!")
		logFound = false
		return
	else
		logFound = true
	end
	spawnedItems = 0
	if isSave then
		--check what item ID we're on
		local config = Isaac.GetItemConfig()
		while config:GetCollectible(maxNumber - spawnedItems - 1) ~= nil do
			spawnedItems = spawnedItems + 1
		end
		print("resuming at " .. (maxNumber - spawnedItems - 1))
	end
end
EID:AddCallback(ModCallbacks.MC_POST_GAME_STARTED, GameStartTMTRAINER)

--[[
EID:AddCallback(ModCallbacks.MC_PRE_ENTITY_SPAWN, function(_, enttype, variant, subtype, pos, vel, spawner, seed)
	if (EID:PlayersHaveCollectible(CollectibleType.COLLECTIBLE_TMTRAINER) and enttype == 5 and variant == 100 and subtype == 0) then
		print("[EID] TMTRAINER SPAWNED " .. (maxNumber - spawnedItems - 1))
		Isaac.DebugString("[EID] TMTRAINER SPAWNED " .. (maxNumber - spawnedItems - 1))
		--print("PRE ENTITY SPAWN " .. enttype .. "." .. variant .. "." .. subtype .. ", " .. tostring(pos))
		--Isaac.DebugString("PRE ENTITY SPAWN " .. enttype .. "." .. variant .. "." .. subtype .. ", " .. tostring(pos))
	end
end)
]]

local function CheckLogForItems(_)
	if (not logFound or game:GetFrameCount() % 5 ~= 0 or not EID:PlayersHaveCollectible(CollectibleType.COLLECTIBLE_TMTRAINER)) then return end
	local logLines = io.lines(logLocation)
	local numEffects = 0
	local itemScore = 0
	local effects = {}
	local eidDesc = ""
	for line in io.lines(logLocation) do
		if string.find(line, "initialized with") then
			local count = 0
			spawnedItems = spawnedItems + 1
			-- find the number of effects, and the score given
			-- (this match gets every number in the line)
			for s in string.gmatch(line, "%d*%.?%d+") do
				if count == 0 then
					numEffects = tonumber(s)
					count = 1
				elseif count == 1 then
					itemScore = tonumber(s)
				end
			end
			eidDesc = "Score: " .. itemScore .. "#"
		elseif numEffects > 0 then
			numEffects = numEffects - 1
			table.insert(effects, line)
			eidDesc = eidDesc .. parseEffectLine(line)
			-- also display the unparsed line for debug purposes (REMOVE THIS)
			eidDesc = eidDesc .. "(" .. line .. ")#"
			if numEffects == 0 then
				EID:addCollectible(maxNumber - spawnedItems, eidDesc)
			end
		end
		-- there are some lines that have a gigantic amount of white space and I don't know why, don't write those I guess...
		if (#line < 200) then secondaryLog:write("LINE: " .. #line .. ": " .. line .. "\n") end
	end
	secondaryLog:flush()
	-- wipe the log file
	io.open(logLocation, "w+")
end
EID:AddCallback(ModCallbacks.MC_POST_UPDATE, CheckLogForItems)