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ShayF2

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Posts posted by ShayF2

    [HELP] How to fix this bug?

    in Scripting

    Posted

    Use absolute positioning (your resolution whole numbers) then calculate the relative position with this 

    local devx, devy = 1366, 768 -- your resolution
local clientx, clienty = guiGetScreenSize() -- everyone's resolution

function absoluteToRelativeDX(x, y, w, h)
	return x/devx*clientx, y/devy*clienty, w/devx*clientx, h/devy*clienty
end

    Hopefully this helps you.

    How do add ID for vehs/players

    in Scripting

    Posted · Edited by ShayF

    I think you first need to learn what table index's and table keys are, @MissionComp.
    Table index's are the positions inside the table, and using such index can allow you to grab things from a specific spot in the table.
    Index's go up from 0, and they go to like an infinite amount.
    Say you have a table: 

    local t = {}

    Now lets put something in the table: 

    table.insert(t, 'Hello World')

    Okay so we've put a string that says Hello World into the table. Now the table looks like this, without you having to recreate it again: 

     t = {'Hello World'}

    So now that we have a value in there I can explain how index's work.
    Since the tables index starts at 0, as soon as you put an item in it, the index count goes up. So now, 'Hello World' has an index of 1 in the table. To call this you do: 

    t[1]

    Here is an example of using this: 

    outputChatBox(t[1])
    t = {position1, position2, position3, etc}
t = {index1, index2, index3, etc}


    I wont cover keys because I don't really need to but I will cover loops.
    When you use the function getElementsByType, it returns a table, that table contains elements. You can look up a list of elements on MTA's Wiki, I'll post a link below.
    You use this function to get a table of all the elements of the specified type.

    Say we get the players in the server for example: 

    local t = getElementsByType('player')

    Each player is put into a table, and the index simply is the position inside the table where a specific player is. So say you only wanted the 4th player in the server: 

    local t = getElementsByType('player')
killPed(t[4])

    and then we would kill that player.

    #table just returns the amount of items in a table
    So say we wanted to get the amount of players in the server: 

    local t = getElementsByType('player')
print(#t)


    So now onto loops.
    There are two types of loops, a pairs loop and an integer loop.
    The difference between a pairs loop and an integer loop is simple. An integer loop simply goes from one number to another, basically counting up, or down if you will. A pairs loop actually runs through a table and returns its data in defined variables.
    Example of an integer loop: for i=1, 5 do
    this will go from 1 to 5, in like a count-up. i is your defined variable that you use to get what number it is on. 

    for i=1, 5 do print(i) end

    so this would print:
    1
    2
    3
    4
    5
    An example of using this would be 

    local t = {'hello', 'world'}
for i=1, #t do print(t[i]) end

    this would print:
    hello
    world

    Example of a pairs loop: for i, v in pairs(getElementsByType('player')) do
    Inside of the pairs function would go your table, i becomes your index and v becomes your value/item, this returns both and they will always match each-other, so here's an example of using that: 

    local t = {'hello', 'world'}
-- and you can use either the index method shown above or use v
for i, v in pairs(t) do print(v); print(t[i]); end

    I wasn't going to go through and fix the code I give you because I honestly expected it to work. So I figured I'd teach you and other people something, in hopes that you can solve the issue yourself. I hope that this response helps you and I wish you a good day.

    Page to MTA SA Element List:
    Element

    • Thanks 1

    How do add ID for vehs/players

    in Scripting

    Posted · Edited by ShayF 

    -- this is for individual objects if u want to count only the ones u create

local objects = {}
local _obj = createObject
Object = createObject

function createObject(...)
	local obj = _obj(...)
	objects[#objects+1] = obj
	return obj
end
-- then you would use index's on objects table like before
if objects[1] then
	print(getElementPosition(objects[1]))
end

-- this is for if you want to grab all objects
local objects = getElementsByType('object')
-- then use index's like I said before
if objects[1] then
	print(getElementPosition(objects[1]))
end

     

    Expected account

    in Scripting

    Posted 

    function TST(player, command, accountName)
  assert(type(accountName) == 'string', 'Expected string @ TST:accountName, got "'..type(accountName)..'"')
  local account = getAccount(accountName)
  assert(account, 'Unable to get account @ TST:account, got "'..type(account)..'"')
  local player = getAccountPlayer(account)
  assert(player, 'Unable to get player from account @ TST:account, got "'..type(player)..'"')
  if player then

    Try this for debugging

    How do add ID for vehs/players

    in Scripting

    Posted 

    local players = getElementsByType('player')
local vehicles = getElementsByType('vehicle')
-- then just use index's, like this
if player[1] then -- 1, 2, 3, 4, 5 etc inside of [], this number will be your index or your 'id'
	outputChatBox(getPlayerName(player[1]))
end

     

    • Thanks 1

    pairs vs ipairs

    in Scripting

    Posted

    When you run a loop in pairs, it grabs not only indexed items but also objects. Objects have keys and values.
    for k, v in pairs(table) do
    in this case k would be your key, and v would be its value. Keys are always strings.
    Say it's not an object, instead its an indexed item, k would become the index, and v would be the value for that index.

    ipairs however, loops through ONLY indexed items and it does them in order. So ipairs will not grab objects.
    pairs is faster than ipairs since it does not have to sort through the table first.

    for i=1, #table do
    this is called an Int loop, where it simply goes from 1 number to another, i=start, end
    i represents index mostly because people use this loop to grab table index's.
    it is by far the fastest loop, as it doesn't have to sort through the table, or return an extra argumented variable.

    #table just returns the amount of items in a table

    • Like 2
    • Thanks 1

    Sending datas between server and client side

    in Scripting

    Posted

    Sending data between server and client is called Syncing. You can sync easily, however you only want the traffic to go from server to client and not the other way around. If you were to go the other way around then players would be able to exploit certain parts of your data transfer. You can sync using element data (which is faster, I tested myself) or the safer and more reliable way with events. Either one should work just fine.

    Az adatok küldése a kiszolgáló és az ügyfél között szinkronizálás. Könnyedén szinkronizálható, de csak azt szeretné, ha a forgalom kiszolgálóról ügyfélre megy, és nem fordítva. Ha a másik irányba megy, akkor a játékosok képesek lesznek kihasználni az adatátvitel bizonyos részeit. Szinkronizálhatja az elemadatokat (ami gyorsabb, teszteltem magam) vagy a biztonságosabb és megbízhatóbb módokat az eseményekkel. Bármelyiknek jól kell működnie.

    Convert File Buffer To Table

    in Scripting

    Posted

    @thisdp

    Try your code again

    this time do this

    print(type(gTable.testFunction))

    print(type(testFunction))

    the reason i say this is because you dont unload the code, which means that the original functions and variables are still there even after you add them to the table. Not only do you have to unload the code but you need to reformat the string due to those functions and variables being inside the table so that events, commands, and timers can trigger them from gTable instead of the original code.

    If the second print test prints function then the solution is false.

    Convert File Buffer To Table

    in Scripting

    Posted · Edited by ShayF

    @thisdp your solution is false

    You load the code, and dont unload it.

    I'm sorry but this solution will not work.

    However I do like that you made things global, but that is also false because after adding those functions to the table you need to change the name of those functions, gable.functionName()

    In the scripts string format before you load it I mean, you don't change their names, you just change the names where the functions are executed, if you know what I mean.

    Is Lua really limited?

    in MTA Chat

    Posted · Edited by ShayF

    @spenkbang 

    local seconds = 0

local timer = setTimer(function() seconds = seconds + 1 end, 1000, 0)

function stopCount()
	killTimer(timer)
	return seconds
end

    or you can try a loop function 

    local seconds = 0

function startCount()
	seconds = seconds + 1
	return continue()
end

function continue()
	seconds = seconds + 1
	return startCount()
end

function stopCount()
	continue = function() end
	return seconds
end

    Which can go less than 50 ms, this should be capable of getting close to 1ms

    Convert File Buffer To Table

    in Scripting

    Posted

    I need help figuring out how to convert a script files buffer to a table. Here's what I mean: 

    local buffer = [[local sx, sy = 0, 0
globalVar = 'test string'
function testFunction() end
local function testFunction2() end]]

-- to
local buffer = {sx = 0, sy = 0, globalVar = 'test string', function testFunction() end, function testFunction2() end}

     

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