Recently, I have been experimenting in the Roblox version of Lua in the studio. I tried to hook up a moving projectile to a GUI button. Here is the code:
local cannonp1 = workspace.CannonP1
local loopingvar = 0
script.Parent.MouseButton1Click:Connect(fire)
function fire()
repeat until loopingvar == 100
workspace.ProjectileP1.CFrame = workspace.ProjectileP1.CFrame * CFrame.new(1, 0, 0)
loopingvar = loopingvar + 1
wait(0.1)
end
end
I am very new to Roblox Studio, so all I can say is that When I press the button, not a single thing happens to my projectile. And the projectile is anchored, if you were wondering. I know that good questions should be elaborate, but there is no other information that i can find that would effect the movement of the projectile other than my extremely poor scripting. I have also checked on the Roblox developer forums, but most of the posts about CFrame there are outdated and do not work in the new version of Roblox Studio. I have checked about every website possible, but to no avail. Any advice would be amazing.
You're not using repeat until correctly. The first line is supposed to be repeat and the last line is supposed to be until loopingvar == 100. There's not supposed to be an end at all. Currently, there's a syntax error in your code due to the extra end, and even without that, you'd have an infinite loop, since it's basically repeat --[[do nothing]] until loopingvar == 100.
However, you can do even one step better than this, by using a numeric for loop. Instead of the above changes, get rid of local loopingvar = 0 and loopingvar = loopingvar + 1, and replace repeat until loopingvar == 100 with for loopingvar = 0,100 do.
Related
So I'm trying to develop a small coin collecting game on Roblox, and am pretty new to scripting. Basically Every 0.25 - 1.5 seconds, a small part is cloned from (-254, 2, -255) (one corner of the baseplate), to (254, 2, 255) (the opposite corner). That works, but im trying to loop over every object in workspace named coin, and when one is touched, run code (for now im just trying to destroy the object but ill probably just update the Coins leaderstat). It doesn't give me any errors, it just doesnt work. I've also looked all over the internet, and cant find anything.
Code in ServerScriptStorage (spawns cubes and already works, but showed it for help.):
local runservice = game:GetService("RunService")
local interval = math.random(0.25, 1.5)
local coin = game.ServerStorage.coin
local counter = 0
local x = math.random(-254, 254)
local z = math.random(-255, 255)
runservice.Heartbeat:Connect(function(step)
counter = counter + step
if counter >= interval then
counter = counter - interval
local copy = coin:Clone()
copy.Parent = workspace
copy.Position = Vector3.new(x, 2, z)
x = math.random(-254, 254)
z = math.random(-255, 255)
interval = math.random(0.25, 1.5)
end
end)
script in desktop that handles the touching:
for _, v in pairs(workspace:GetChildren()) do
if v.Name == "coin" then
print("foo")
end
end
I hope this is enough to help!
Well as you are new to scripting in roblox let me give you your answer with good practices that may help you a lot.
First in this scenario you dont need to use Heartbeat, instead you could simple use a while loop or a recursive function and a simple wait().
Also you better create a "Coins" Folder in workspace in order to not check other objects
local waitTime = math.random(25,150)/100 --random time between 0.25 and 1.5
while true do --forever loop
wait(waitTime) --waits desired time
local coin = game.ServerStorage.coin:Clone() --cloning your coin
coin.Parent = workspace.Coins --Coins folder
coin.Position = Vector3.new(math.random(0,10),2,math.random(0,10)) --you must use your own position
coin.Touched:Connect(function(hitPart) --here is the touched function
local plr = game.Players:FindFirstChild(hitPart.Parent.Name) --check if the hitPart is part of a player
if plr then
plr.leaderstats.Coins.Value = plr.leaderstats.Coins.Value + 1--here you can increment your coins value in your own value
coin:Destroy()--destroys the coin
end
end)
waitTime = math.random(25,150)/100 --set a new random value to wait next
end
Also you mentioned something about loop every coin in workspace, thats why I said it is better to create a separate folder. So I made a localscript inside StarterPlayerScripts with the following code:
local RunService = game:GetService("RunService") --service
RunService.RenderStepped:Connect(function() --function on every game frame
for i,v in pairs(workspace.Coins:GetChildren()) do --loop on every coin
v.Orientation = Vector3.new(v.Orientation.X,v.Orientation.Y+5,v.Orientation.Z) --increasing Orientation just on Y in order to rotate them
end
end)
I'm doing this on localscript because is just a visual effect and it is never a good idea to send that many functions that quickly serverside. Here is the game I made for you:
https://www.roblox.com/games/5842250223/Help-for-TextBasedYoutube
You can edit the place.
In other words to answer "How to run code when any object with the same name is touched?"
You need to set the function for the object when creating it.
Edit: Also is not a good idea to send to many request to the server in short periods of time, I would recommend you to create a coin ever 2 to 3 seconds or more.
I am making a game that has different walkspeeds in different sections, but I don't want people to change their own walkspeed with hacks. My solution was to make a part and stretch it to fit the entire area and make it invisible + CanCollide disabled, and then use the child script to kill you if your walkspeed isn't what it should be:
script.Parent.Touched:connect(function(WSChecker)
if not WSChecker.Parent then return end
local humanoid = WSChecker.Parent:FindFirstChild("Humanoid")
if not humanoid then return end
if (humanoid.WalkSpeed ~= 25) then
humanoid.Health = 0
end
end)
Problem is that it does not work with multiple players in the part at one time, and I want to make it so it will kick the player instead of killing them. Is there a way to go about these problems? It has to check their ws only within the part, and I don't know how to make it kick whoever changed their ws instead of killing them.
I would suggest hooking up your function to each player's Humanoid instead, and use the Humanoid.Running event.
Humanoid.Running provides you the speed they're currently running at, which means you can check if that speed is ever above a certain threshold, and punish them if it is.
Code example:
player.Character.Humanoid.Running:Connect(function(Speed)
print(Player, "is running at speed", Speed)
end)
As for kicking, you want to use player:Kick().
if (humanoid.WalkSpeed ~= 25) then
game.Players.LocalPlayer:Kick()
end
that should do the trick...
I think I can help. The solution that worked for me is:
local player = game.Players.LocalPlayer --Make sure it's a local script.
local char = player.Character
local hum = char:WaitForChild("Humanoid")
local hum2 = char.Humanoid
script.Parent = game.StarterPlayer.StarterPlayerScripts
if hum.WalkSpeed >16 then
player:Kick('You have been kicked for possible speed hacks.')
end
if hum2.WalkSpeed >16 then
player:Kick('You have been kicked for possible speed hacks.')
end
if (humanoid.WalkSpeed ~= 25) then
game.localplayer.remove:fire
end
end)
Hopefully, this is a better solution.
You can ofcourse do the above but as an addition to what everyone above said, checking if the walkspeed value is at the desired value is easily bypassable.
Exploiters will get the raw metatable of the game and hook __index to return a normal value for WalkSpeed. Metatables cant be detected either as most modern exploits use C closures instead of Lua. Your best chance is to see how fast the character is moving and teleport them back if player is moving too fast (like a passive anticheat).
function onTouch(part)
local human = part.Parent:findFirstChild("Humanoid")
if (human == nil) then
return
end
human.Health = human.Health - 10
end
script.Parent.Touched:connect(onTouch)
I'm new to coding in lua, and it is my first time using functions. I want to know what the "part" is equal to so that I can find out how to set up the human variable
local human = part.Parent:findFirstChild("Humanoid")
without using the "part," like what can I plug in so that works without even setting up part, because I want to do something with it in a loop:
local burnaffect = false
--local a = 0
function onTouch(part)
local human = part.Parent:findFirstChild("Humanoid")
if (human == nil and burnaffect == false) then
return
end
a = 0
burnaffect = true
end
script.Parent.Touched:connect(onTouch)
while burnaffect == true do
local part = --????
local human = part.Parent:findFirstChild("Humanoid")
human.Health = human.Health - 10
end
The code may seem confusing but I'm fairly new so I don't know what is best yet.
It looks like what you're trying to do is have a player "set on fire" when they touch a certain brick. The code below does exactly this, and I'll explain it line by line afterwards.
function onTouch(part)
local human = part.Parent:findFirstChild("Humanoid")
if (human == nil) then
return
end
local fire = Instance.new("Fire", part)
while (human.Health > 0) do
human.Health = human.Health - 10
wait(0.1)
end
end
script.Parent.Touched:connect(onTouch)
So, I'll start going through this.
function onTouch(part)
We need to define the function first and give it a name so that we can reference it in the Touched event later. The part parameter is the Part object that touched the script.Parent object and caused the Touched event to fire. So, ROBLOX will automatically call this function whenever something touches your script.Parent and automatically input the Part that touched it as that first parameter, part.
local human = part.Parent:findFirstChild("Humanoid")
This will get the Parent of the Part that touched the block (because if a player is touching the block, it isn't going to give us the Character, it's going to give us an Arm or a Leg in the part variable, because that's the actual Part that touched it, so we need to get that part's Parent. Then, once we have the Parent, we want to get the Humanoid object inside of the Character. Then, we put that Humanoid object inside of the human variable (if we could find one, otherwise we put nil into that human variable).
if (human == nil) then
We want to check if human is nil (which would mean we couldn't find a Humanoid object in the line before this one, which means whatever touched this isn't a real Character, so we'll want to return (which means stop running the function immediately).
local fire = Instance.new("Fire", part)
This line isn't necessary, I added it because I thought if you wanted to simulate burning, this would help. You can leave it out if you'd like. It will create a new Instance of type Fire, and places it inside of the part. That is to say, if a player's Leg touches this part, a Fire will be put inside of that leg, which will make it appear to ignite in flames.
while (human.Health > 0) do
We want to keep looping until the player dies (has a human.Health value of 0 or less) so we tell the loop to keep going while human.Health is greater than 0.
human.Health = human.Health - 10
We'll deincrement the human.Health value by 10, and then wait(0.1), which will cause the script to wait for 1/10 of a second (you can change this to a different number, but it is important to keep it as if you remove it, the loop will run extremely fast and kill the player immediately. If you want this to happen, you can remove the wait, but if you wanted to kill the player immediately, you could just set human.Health = 0 in the first place.
If you have any questions, feel free to ask! Hope this answered your question.
I remember when I used to use Lua for Roblox. The part is the part in the game that gets touched. You need to reference it so you can find the humanoid object it belongs to or lack of so your code can tell if it is a humanoid that touched it or not. Let me know if you have any further questions.
I'm trying to use an ESP8266 SoC to read a water flow sensor that is said to produce a square wave as output. I thought it would be a simple matter of using a GPIO port in interrupt mode, to count rising edge transitions -- and in fact that initially seemed to work. Then I upgraded the firmware from 0.96 to 1.5 and it has since ceased to work, I see no transitions when the wheel spins anymore.
However, if I run a wire to the pin [for the GPIO I'm using] and touch it to VCC momentarily, the interrupt routine is called as expected, so I know the sensor is wired to the right pin, and the interrupt routine is registered correctly. My code:
function intCb(level)
SpinCount = SpinCount + 1
local levelString = "up"
if level == gpio.HIGH then
levelString = "down"
end
gpio.trig(pin, levelString, intCb)
end
gpio.write(pin, 0)
gpio.trig(pin, "up", intCb)
gpio.mode(pin, gpio.INT, gpio.FLOAT)
So what am I missing? Do I need more support circuitry to read a square wave as input? If so then how did it work initially?
For anything that involves hardware it's really hard to give a definite answer here on SO. In most cases one bases it on hints (and hunches sometimes). A few ideas:
gpio.FLOAT should probably be gpio.PULLUP instead (unless you have an external pull-up resistor).
Your setup doesn't seem to be fundamentally different from e.g. using a push button or a switch to trigger some event. Hence, you probably want to use some kind of debounce or throttle function.
Since you seem to be interested in both rising and falling edges (as you switch between up and down) you might just as well listen for both, no?
So, assuming I drew the right conclusions something like the following generic skeleton may prove to be useful:
-- inspired by https://github.com/hackhitchin/esp8266-co-uk/blob/master/tutorials/introduction-to-gpio-api.md
-- and http://www.esp8266.com/viewtopic.php?f=24&t=4833&start=5#p29127
local pin = 4 --> GPIO2
function debounce (func)
local last = 0
local delay = 5000
return function (...)
local now = tmr.now()
local delta = now - last
-- if delta < 0 then delta = delta + 2147483647 end; proposed because of delta rolling over
if delta < delay then return end;
last = now
return func(...)
end
end
function onChange ()
print('The pin value has changed to '..gpio.read(pin))
end
gpio.mode(pin, gpio.INT, gpio.PULLUP) -- see https://github.com/hackhitchin/esp8266-co-uk/pull/1
gpio.trig(pin, 'both', debounce(onChange))
I solved this using a 555 timer chip as a schmitt trigger:
I use very simple Lua scripting in an online game called ROBLOX. My problem is that values in my scripts aren't changing! Example:
num = 0
while true do
num = num + 1
print(num)
wait(1)
end
That should count up starting on 0, but the number won't change. Could this be from the ROBLOX website? I can't figure out what else it might be.
What happens with
local num = 0
while true do
num = num + 1
print(num)
wait(1)
end
?
Maybe some other part of the system is changing the global num.
I just put your code in the Lua demo and it works fine if you remove the wait() function call. I'm assuming you defined this function somewhere?
There is nothing wrong with the code. You must be running it wrong. Also, wait is a function defined in the Roblox API. It is legit.
There is no error in your code. If you are using ROBLOX, then I'm not sure how you're running it wrong as it is a fairly simple interface. I'll try it in ROBLOX and see if it errors for me.
To the people who were wondering about wait(): it's a ROBLOX-specific global function, that pauses the current task the amount of seconds in the parentheses.
Try this:
local num = 0
while true do
num = num + 1
print(num)
print(type(num))
wait(1)
end