ok, I've been starring at this error message for better part of a day now.
I'm trying to make a simple eventlistner to run when someone touches a button. The problem is that hower ever I decided to name it it says it's nil and cannot be used.
I'm working on a scene with the name "scene", self.view named "sceneGroup". The rectangle I try to add a listner to is called "mMnew" and is in the group called "mMnewU".
I've tried to change the name between all of those. At first I hade problem with adding the eventlistener but solved it, problem was not the same sulution worked for the listners name.
Listner:
function scene.mMnewUeser:touch(event)
if(event.phase == "begun")then
local test1 = display.newRect(100,150,40,40)
test1:setFillColor(0,1,0)
print("Touch found")
end
end
Added listner:
scene:addEventListener("touch", scene.mMnewUeser)
I'm still pretty green with this language and used to code in JavaC, php, html, sql and AS3.0. Sorry for my rockie problems!
UPDATE:
After adding a few simple checkpoints check in the code, it would seam that it refuses to run the function scene:create(event) my scene does hwoerver get created by local composer = require("composer")
local scene = composer.newScene()
This
function scene.mMnewUeser:touch(event)
is not the correct syntax. You probably meant to have:
function scene:mMnewUeser(event)
which means you're adding new method with a name mMnewUeser to scene object. Then you can just use it as touch listener the way you did in the last line of code. See an explanation of the difference between . and : here.
Related
I am currently working on a game teleporter in Roblox (If you are unfamiliar with this, you touch a part and It takes you to a waiting area to soon be teleported to the game) Right now I am having trouble with the part that teleports you to that waiting area. (the name of the part teleporting you is called Teleporter. The name of the part you are being teleported to is called Lob)
The code I had put In was `
local Lob = game.Workspace.Lob
function Teleport()
game.Workspace.Teleporter.Touched:Connect(game.Players.LocalPlayer:MoveTo(Lob))
end
game.Workspace.Teleporter.Touched:Connect(Teleport)
What i got wasServerScriptService.Script:4: attempt to index nil with 'MoveTo'`
You're connecting the touched event inside of the function and outside of it.
Could you possibly do something like
function Teleport()
game:GetService("Players").LocalPlayer.Character.HumanoidRootPart.CFrame = Lob.CFrame)
end
workspace.Teleporter.Touched:Connect(Teleport)
local Player = game.Players.LocalPlayer
local PlayerCash = Player:WaitForChild("leaderstats"):WaitForChild("Strength")
local Mouse = Player:GetMouse()
local amount = 50
script.Parent.Activate:Connect(function()
game.Players.LocalPlayer.leaderstats.money.Value = game.Players.LocalPlayer.leaderstats.money.Value + amount
end)
I am trying to make a code to give Strength when you click. When I press 'Play' it doesn't work. All it says in the output is
'attempt to index function with 'Connect'.'
The error "attempt to index [type] with [field name]" means that you are incorrectly using something like an object, and you are trying to access some field on it.
In your case, this error is pointing at the line : script.Parent.Activate:Connect.This says that script.Parent.Activate is a function and not a table, and you cannot call Connect on a function. This is just to help us figure out what is wrong with our code.
Since you working with Tools, there is a simple fix. Instead of using the Activate function, you are looking for the Activated event. So just change update that line like this :
script.Parent.Activated:Connect(function()
It connects a function to an event that happened, like this:
local tool = script.Parent
-- It connects the event (the tool being equipped) to a function.
tool.Equipped:Connect(function()
-- CODE
end)
Also, the answer above is how you can fix your problem and here's a shortcut: You have defined "Player" and you could've used it inside the function. Have a great day and God bless everyone here.
I have a Lua function where I build a table of value and attempt to add it to a global table with a named key.
The key name is pulled from the function arguments. Basically, it's a filename, and I'm pairing it up with data about the file.
Unfortunately, the global table always comes back nil. Here's my code: (let me know if you need to see more)
(Commented parts are other attempts, although many attempts have been deleted already)
Animator = Class{}
function Animator:init(atlasfile, stringatlasfriendlyname, totalanimationstates, numberofframesperstate, booleanstatictilesize)
-- Define the Animator's operation mode. Either static tile size or variable.
if booleanstatictilesize ~= false then
self.isTileSizeStatic = true
else
self.isTileSizeStatic = false
end
-- Define the total animation states (walking left, walking right, up down, etc.)
-- And then the total frames per state.
self.numAnimationStates = totalanimationstates or 1
self.numAnimationFrames = numberofframesperstate or 2
-- Assign the actual atlas file and give it a programmer-friendly name.
self.atlasname = stringatlasfriendlyname or removeFileExtension(atlasfile, 'animation')
generateAnimationQuads(atlasfile, self.atlasname, self.numAnimationStates, self.numAnimationFrames)
end
function generateAnimationQuads(atlasfile, atlasfriendlyname, states, frames)
spriteWidthDivider = atlasfile:getWidth() / frames
spriteHeightDivider = atlasfile:getHeight() / states
animationQuadArray = generateQuads(atlasfile, spriteWidthDivider, spriteHeightDivider)
animationSetValues = {atlasarray = animationQuadArray, width = spriteWidthDivider, height = spriteHeightDivider}
--gAnimationSets[#gAnimationSets+1] = atlasfriendlyname
gAnimationSets[atlasfriendlyname] = animationSetValues
--table.insert(gAnimationSets, atlasfriendlyname)
end
Note: when using print(atlasfriendlyname) and print(animationSetValues), neither are empty or nil. They both contain values.
For some reason, the line(s) that assign the key pair to gAnimationSets does not work.
gAnimationSets is defined a single time at the top of the program in main.lua, using
gAnimationSets = {}
Animator class is called during the init() function of a character class called Bug. And the Bug class is initialized in the init() function of StartState, which extends from BaseState, which simply defines dummy init(), enter(), update() etc. functions.
StartState is invoked in main.lua using the StateMachine class, where it is passed into StateMachine as a value of a global table declared in main.lua.
gAnimationSets is declared after the table of states and before invoking the state.
This is using the Love2D engine.
Sorry that I came here for help, I've been picking away at this for hours.
Edit: more testing.
Trying to print the animationQuadArray at the index gTextures['buganimation'] always returns nil. Huh?
Here's gTextures in Main.lua
gTextures = {
['background'] = love.graphics.newImage('graphics/background.png'),
['main'] = love.graphics.newImage('graphics/breakout.png'),
['arrows'] = love.graphics.newImage('graphics/arrows.png'),
['hearts'] = love.graphics.newImage('graphics/hearts.png'),
['particle'] = love.graphics.newImage('graphics/particle.png'),
['buganimation'] = love.graphics.newImage('graphics/buganimation.png')
}
Attempting to return gTextures['buganimation'] returns a file value as normal. It's not empty.
My brain is so fried right now I can't even remember why I came to edit this. I can't remember.
Global table in Main.lua, all other functions can't access it.
print(gTextures['buganimation']) works inside the function in question. So gTextures is absolutely accessible.
Table isn't empty. AnimationSetValues is not empty.
I'm adding second answer because both are correct in context.
I ended up switching IDE's to VS Code and now the original one works.
I was originally using Eclipse LDT with a Love2D interpreter and in that environment, my original answer is correct, but in VS Code, the original is also correct.
So Dimitry was right, they are equivalent, but something about my actual Eclipse setup was not allowing that syntax to work.
I switched to VS Code after I had another strange syntax problem with the interpreter where goto syntax was not recognized and gave a persistent error. The interpreter thought goto was the name of a variable.
So I switched, and now both things are fixed. I guess I just won't use LDT for now.
Solution: Lua syntax. Brain Fry Syndrome
I wrote:
animationSetValues = {atlasarray = animationQuadArray, width = spriteWidthDivider, height = spriteHeightDivider}
Should be:
animationSetValues = {['atlasfile']=atlasfile, ['atlasarray']=animationQuadArray, ['width']=spriteWidthDivider, ['height']=spriteHeightDivider}
Edit: I'm fully aware of how to use answers. This was posted here to reserve my spot for an answer so I could edit it later when I returned back home, which is exactly what I'm doing right now. I'll keep the old post for archival purposes.
Original:
I solved it. I apologize for not posting the solution right now. My brain is melted into gravy.
I will post it tomorrow. Just wanted to "answer" saying no need to help. Solved it.
Solution is basically, "oh it's just one of those Lua things". Wonderful. I'm having so much fun with this language - you can tell by my blank expression.
From the language without line endings or brackets, but forced print parentheses... ugh. I'm going back to C# when this class is done.
[My code is :]
local function MWin()
game.StarterGui.ScreenGui1.DemonWin.Visible = true
if game.Workspace.Mages_Boss.Humanoid.Died:connect(function()
print("good")
end
[My noob is named : Mages_Boss
And my screen gui is named : DemonWin
I dont know what to put for "print("good")".]
First, modifying the starter GUI does nothing. You need to change the one player or all players with a for loop. In my answer, I’ll use the former with a player named ROBLOX. If you want to start with it invisible, you need game.Players.ROBLOX.PlayerGui.ScreenGui1.DemonWin.Visible = false. To make it visible on the death event, use game.Players.ROBLOX.PlayerGui.ScreenGui1.DemonWin.Visible = true.
Try using
DemonWin.Enabled=true;
or
DemonWin.Enabled=false;
to toggle whether it is active or not. I suppose in the died function, use the latter.
I'm going to assume you're not firing the function so you can get rid of that. You're also going to remove the .Died since it fires even when it's not dead. So your best bet would be to do also add a debounce- kind of function to your script. Here's the modified version:
game.StarterGui.ScreenGui1.DemonWin.Visible = false
if game.Workspace.Mages_Boss.Humanoid.Health == 0 then
game.StarterGui.ScreenGui1.DemonWin.Visible = true
else
game.StarterGui.ScreenGui1.DemonWin.Visible = false
end
Also, you would have to put the GUI in the StarterGui (located in game.Players.LocalPlayer.StarterGui) in order to not publicly malfunction this script.
recently I have been creating an imitation HarborRP gamemode for Garry's Mod, and I'm trying to recreate the Smuggler NPC (You'll know what I mean if you've ever played HarborRP) So basically I want the NPC to open ONE Derma-Frame window when the player presses their use key on it. I have the NPC created and all of that, but when the player simply presses their use key on the NPC, a million windows pop up, I have the NPC/Entity's use type set to SIMPLE_USE, but it seems like that doesn't matter because so many windows pop up. the VGUI/Derma Frame's settings is set to MakePopup() but that doesn't matter either. See if you can find whats wrong with it, I have very little knowledge of LUA.
init.lua file:
include("shared.lua")
AddCSLuaFile("cl_init.lua")
AddCSLuaFile("shared.lua")
util.AddNetworkString("smug")
hook.Add("PlayerUse", "menuu", function(ply, ent)
net.Start("smug")
net.Send(ply)
end)
function ENT:Initialize()
self:SetModel('models/humans/group01/female_01.mdl')
self:SetHullType(HULL_HUMAN)
self:SetHullSizeNormal()
self:SetNPCState(NPC_STATE_SCRIPT)
self:SetSolid(SOLID_BBOX)
self:SetUseType(SIMPLE_USE)
self:DropToFloor()
end
cl_init.lua file:
include("shared.lua")
function ENT:Draw()
self.Entity:DrawModel()
end
net.Receive("smug", function()
if( !frame ) then
local frame = vgui.Create("DFrame")
frame:SetSize(900,600)
frame:SetPos(ScrW()/2-450,ScrH()/2-300)
frame:SetVisible(true)
frame:MakePopup()
frame:SetDeleteOnClose(true)
elseif (frame) then print("HI")
end
end)
shared.lua file:
ENT.Base = "base_ai"
ENT.Type = "ai"
ENT.PrintName = "[DEV] Smuggler NPC"
ENT.Category = "InVaLiD's HBRP Entities"
ENT.Author = "InVaLiD"
ENT.Spawnable = true
ENT.AdminSpawnable = true
ENT.AutomaticFrameAdvance = true
Something To Note
All of these files are in the addons/smug_npc/lua/entities/ folder.
Yes, I know I have weird names for things, that's just me.
I have a basic to no knowledge of lua, so explain things please :)
I really do appreciate your help, and your will to help people, please know that I thank you all for being here just to sort other people's problems even though you could be spending your time doing something productive, Thank you!
You need to put your code that does net.Send into the entities ENT:Use function rather than on the PlayerUse hook.
function ENT:Use(ply)
net.Start("smug")
net.Send(ply)
end
The below line which you already have in your code in the initialize function makes the entity call the ENT:Use function once when a player presses E on it, which it seems that you want to do so that is good:
self:SetUseType(SIMPLE_USE)
Also, I recommend checking out the gmod forums if you need developer help in future.
GMod forums: https://gmod.facepunch.com/f