I'm trying to create a while true do loop, that reacts to clicks, using os.pullEvent, and also updates a monitor.
Problem being, it only updates the screen when I press one of the on screen buttons, and I've found out that's because pullEvent stops the script, until an event is fired.
Is it possible to make it so pullEvent doesn't stop me updating the monitor?
function getClick()
event,side,x,y = os.pullEvent("monitor_touch")
button.checkxy(x,y)
end
local tmp = 0;
while true do
button.label(2, 2, "Test "..tmp)
button.screen()
tmp++
getClick()
end
You can easily use the parallel api to run both codes essentially at the same time. How it works is it runs them in sequence until it hits something that uses os.pullEvent and then swaps over and does the other side, and if both stop at something that does os.pullEvent then it keeps swapping between until one yields and continues from there.
local function getClick()
local event,side,x,y = os.pullEvent("monitor_touch")
buttoncheckxy(x,y)
end
local tmp = 0
local function makeButtons()
while true do
button.label(2,2,"Test "..tmp)
button.screen()
tmp++
sleep(0)
end
end
parallel.waitForAny(getClick,makeButtons)
Now if you notice, first thing, I've made your while loop into a function and added a sleep inside it, so that it yields and allows the program to swap. At the end you see parallel.waitForAny() which runs the two functions that are specified and when one of them finishes, which in this case whenever you click on a button, then it ends. Notice however inside the arguments that I'm not calling the functions, I'm just passing them.
I don't have computercraft handy right now or look up the functions but i know that you can use the function os.startTimer(t) that will cause an event in t seconds (I think it is seconds)
usage:
update_rate = 1
local _timer = os.startTimer(update_rate)
while true do
local event = os.pullEvent()
if event == _timer then
--updte_screen()
_timer = os.startTimer(update_rate)
elseif event == --some oter events you want to take action for
--action()
end
end
note: the code is not tested and I didn't use computercraft in quite a while so pleas correct me if i did a mistake.
Related
I started learning LUA a few days ago, started my own project inside Tabletop Simulator game, but I've hit a brick wall. I can't add time to a Wait class.
This is an example of what I tried:
function state_check()
--This function checks if the state of obj_1 and obj_2 is 0 or 1
end
function press_button()
--This function activates other functions based on the state of obj_1 and obj_2
i = 1 --Function starts with a wait of 1 second
if obj_1_state == 1 then --If state is 1, then the function is triggered and 1 second is added to i
Wait.time(func_1, i)
i = i + 1
end
if obj_2_state == 1 then
Wait.time(func_2, i)
end
end
I need for the function to check the first part and if true, do the second part 1 second later. If not, do the second part normally and skip the "i = i + 1".
My problem is that the function does everything at the same time. I know I'm doing something wrong, but I can't figure out what. Is there a way to create some for of gate to do everything in order or anything similar?
Your code seems correct.
I don't know what is the problem.
But I know that one of possible solutions is to follow the "callback hell" style of programming:
local function second_part(obj_2_state)
if obj_2_state == 1 then
Wait.time(func_2, 1)
end
end
local function first_part(obj_1_state, obj_2_state)
if obj_1_state == 1 then
Wait.time(
function()
func_1()
second_part(obj_2_state)
end, 1)
else
second_part(obj_2_state)
end
end
function press_button()
local obj_1_state, obj_2_state = --calculate states of obj_1 and obj_2 here
first_part(obj_1_state, obj_2_state)
end
I'm pretty new to ROBLOX development and don't really know how to make the objects talk just yet.
I have 16 cells all with an individual open and close button. Those work. I want to create a button that will open all doors at once.
function onClicked()
script.Parent.Parent.Door.Transparency = 1
script.Parent.Parent.Door.CanCollide= false
end
script.Parent.ClickDetector.MouseClick:connect(onClicked)
The above function is on each cell and works. I would like to loop through each one and fire it when I click a different button. I've been looking into getting each object with the same names but haven't been able to iterate through it.
The below code is my attempt to get it to fire off each one!
local part = workspace.OpenButton
local clickDetector = Instance.new("ClickDetector")
local function onMouseClick(player)
for _, child in pairs(workspace.PrisonCell:GetChildren()) do
print(child)
child:connect(child.Door.onClicked)
end
end
clickDetector.Parent = part
part.Parent = workspace
clickDetector.MouseClick:connect(onMouseClick)
Any help with this would be greatly appreciated!
You could do something similar to this to open all of the prison doors at once:
local part = workspace.OpenButton
local clickDetector = Instance.new("ClickDetector")
local function onMouseClick(player)
for _, child in pairs(workspace.PrisonCell:GetChildren()) do
child.Door.Transparency = 1
child.Door.CanCollide = false
end
end
clickDetector.Parent = part
part.Parent = workspace
clickDetector.MouseClick:connect(onMouseClick)
The downside to using the solution above is that if you want to change the door opening script, you would have to change it in both the individual cell buttons as well as this master button script. If you think this might be a problem in the future, I would consider writing a master script somewhere in ServerScriptService that uses BindableEvents for communcation with the button clicking scripts in order to keep the door opening function in one place.
I'm pretty new to lua coding. In my intro page I want to load a different image every 0,5 second while a background music is playing. Here is my code (non working):
function carica_indice()
im=math.random(1,4)
schermataMenu=display.newImage(immagine[im],W,H)
volte=volte+1
end
function menuprincipale()
media.playSound( "sigla1.mp3" )
immagine={"firstscreen.png","firstscreen1.png","firstscreen2.png","firstscreen3.png","firstscreen4.png","firstscreen5.png"}
schermataMenuGroup=display.newGroup()
while volte<32 do
schermataMenu=display.newImage(immagine[im],W,H)
timer.performWithDelay(500,carica_indice())
end
end
timer.performWithDelay(500,carica_indice())
here you are actually calling the function by using those parentheses.
Pass the function as an argument like this:
timer.performWithDelay(500, carica_indice)
timers don't actually stop your code from executing so the while loop will continue to add a lot of timers before the first 32 would fire.
I'm guessing volte is some sort of limit? for that you can ask the timer to repeat a number of iterations instead of the while loop like this:
changeBkg = timer.performWithDelay(500, carica_indice, 32)
you can cancel the timers now, when the user hits play by:
timer.cancel(changeBkg)
ok, Im almost completely new to lua and computercraft but I have alot of creativity. I'm trying to write code that will reprint a variable every second. here is what I have so far:
display = "Loading..."
While true do
sleep(1)
term.clear()
term.setCursorPos(1,1)
print (display)
end
sleep(3)
display = "hello"
I want to use it to render a 2d game, the "display" variable would change often and thus why i want it to be updated every second.
It does indeed refresh every second when I run the code but for some reason I cant seem to get the "display" variable to change after 3 seconds to test it.
What am I doing wrong?
while true is an infinite loop. The script never reaches sleep(3).
Perhaps you want to replace while true with for i=1,3.
I am not experienced in Lua, but this might be a solution: answer on SO
In the UI thread, run:
while ((status=lua_resume(L_coroutine, 0)) == LUA_YIELD) {
semaphore_wait(); /* whatever the appropriate C# call is */
}
"Wait for response" should look something like:
while not results[my_result] do
coroutine.yield()
end
The "incoming message" function should look like the following in Lua:
results[cur_result]=parsed_message
I am starting to learn how to use Lua scripting for different game profile with logitech software.
First I tried to use onevent (I know it isn't very advanced) and created this attack combo script
function OnEvent(event, arg)
if event == "MOUSE_BUTTON_PRESSED" and arg == 1 then --set flag for mb1
mb1_pressed = true
elseif event == "MOUSE_BUTTON_RELEASED" and arg == 1 then --set flag for mb1=false
mb1_pressed = false
end
end
if mb1_pressed then --using flags to determine whether to start attack or not
repeat
presskey("A")
Sleep(50)
releasekey("A")
Sleep(100)
--if MB1 is release, it will also break script. if i only tap mb1, this will only execute the first line of attack without the rest below
if not (**argument**, can be MB1/ismouse1) then break end
presskey("S")
Sleep(50)
releasekey("")
Sleep(120)
presskey("A")
Sleep(50)
releasekey("A")
Sleep(200)
if not (**argument**, can be MB1/ismouse1) then break end --if MB1 is release, it will also break script. this point will prevent script from looping from start if mb1 release
until not (**argument**, i use ismouse1) --end the loop of script
end
So I am trying to bind this to G6 button of my logiech mouse (using mouse_button_press == 6)
Setting a flag with MB6 works, but ending a loop/breaking a loop cannot be triggered by MB6
After some research on SDK/Lua forum of logitech support, it seems that there is a problem with my script
Flags cannot be used/detect as an argument while a script is performing a loop sequence
IsMouseButtonPressed (reads windows keypress) can be used in place or arguments
Windows only detects MB1-5, so binding to G6 is not possible (registers as 6th button)
I read that using couroutine.yield() or polling can be used for stopping repeat scripts in loop. But I cannot find a tutorial for beginners online.
Sorry for the noobish question!
I don't know anything about Logitech mice so I will try to explain things using a simplified, pure Lua example. Lets model the autoattack script as a loop that prints "A" and "B" alternatively. The "A" corresponds to the first part of your loop (press and release A) and the "B" represents the second part (press and release S and A).
function autoattack()
while true do
print("A")
print("B")
end
end
autoattack()
So far we are OK but the loop will obviously run forever and we need to add a way to stop it. I think what you are trying to do is something along the lines of:
local autoattacking = false
function autoattack()
autoattacking = true
while true do
print("A")
if not autoattacking then break end
print("B")
if not autoattacking then break end
end
end
function stop_autoattack()
autoattacking = false
end
autoattack()
stop_autoattack()
However, since autoattack is an infinite loop, stop_autoattack never runs and the autoattacking flag never gets updated. How can we fix this?
Polling
Instead of calling a function and setting a flag to stop the loop, what if we could call some code to see if the loop should be stopped or not?
function continue_autoattack()
print("continue autoattacking? y/n")
return (io.read("*l") == "y")
end
function autoattack()
while true do
print("A")
if not continue_autoattack() then break end
print("B")
if not continue_autoattack() then break end
end
end
autoattack()
In your mouse this would probably mean using some sort of isKeyPressed function, if its available in the API. Its also important to note that the autoattack loop is still an infinite loop - its just that we changed it so it is in control of its stopping condition.
Coroutines
If we want to keep the code to stop the loop outside the loop we will need a way to run the autoattack loop one step at a time. Here is an example:
local state = 1
function autoattack_step()
if state == 1 then
print("A")
state = 2
elseif state == 2
print("B")
state = 1
elseif state == 3
print("STOPPED")
--state remains as 3
else
error("bad state") -- defensive programming; I hate if/elseif without an else
end
end
function stop_autoattack()
state = 3
end
autoattack_step()
autoattack_step()
autoattack_step()
stop_autoattack()
autoattack_step()
Since we broke up the autoattack loop, we now have a chance to call stop_autoattack between calls to autoattack_step. To do this in your mouse script, I think stop_autoattack can go in "release button" handlers but I dont know where I would put the autoattack_step calls. Maybe the API includes something similar to setTimeout or setInterval in Javascript.
As for coroutines, where do they come in? Did you notice how we needed to do some substantial code refactoring to break the loop into single step chunks for autoattack_step? Coroutines are a Lua feature that lets you write code using loops while still being able to run them "one step at a time". When a coroutine reaches a coroutine.yield, it returns back to its caller. The thing is that when you call coroutine.resume again the coroutine will continue executing from where it stopped instead of going back to the start like a normal function would.
local autoattacking = true
autoattack = coroutine.create(function()
while true do
print("A")
coroutine.yield()
if not autoattacking then break end
print("B")
coroutine.yield()
if not autoattacking then break end
end
end)
function stop_autoattack()
autoattacking = false
end
coroutine.resume(autoattack)
coroutine.resume(autoattack)
coroutine.resume(autoattack)
stop_autoattack()
coroutine.resume(autoattack)
coroutine.resume(autoattack)
Very often, coroutines let you keep code more readable, without turning inside out with lots of explicit "state" variables. We still need to have some "higher up" code calling coroutine.resume though, just like we needed to have some higher level code calling autoattack_step.
Ok, so specific to Logitech's implementation of lua in the Logitech Gaming Software suite, you need to use polling.
Once you press a G-key (mouse, pad or keyboard) the OnEvent() function is called. Once inside on event no new OnEvent() events can be called until you exit, your process will become 'stuck' in any loop (as it can't exit the loop, it can't exit the OnEvent() call.
What you need is an interrupt to poll for.
There are three:- IsMouseButtonPressed( button), IsMKeyPressed( key ), IsModifierPressed( modifier ).
If you want your routiene to run while you hold the (any specified) mouse button, you can use IsMouseButtonPressed(n) thus:-
while IsMouseButtonPressed(n) do
doStuff()
end
If you wish to to say, have a toggle switch to start firing (ie: to auto-press a mouse button), then you have to use one of the other two available interrupts, ie:-
PressMouseButton(n);
while not IsModifierPressed("ctrl") do
doStuff()
end
Here your loop will run until you hold down the ctrl key. So not a puristic toggle switch (a G-key to turn on and ctrl to turn off), but passable I believe.
Note:- after further playing, er, testing, I have found IsMouseButtonPressed(n) is independent of PressMouseButton(n), rather this is read from the i/o device, so you can use IsMouseButtonPressed as the interrupt for auto-mouse pressing.
Using a G-Key to kick the action off and a mouse click to interrupt (end) the action , (or you could use both mouse and/or modifier).