Hi there,
I need a help to realyze this function.
In my game I have a spinning wheel and i would like that when the wheel stops a random name of a player will spawn on the screen but when the wheel restart spinning (with a touch event) the name should disappear, can anyone help me please!
Thanks
Hi.
This could be a couple questions. One is just the display part of it, but that’s fairly basic usage of display.newText() and text:removeSelf(), so I’m going to assume it’s not where you’re having trouble.
If coming up with the string is the problem, you’ll need to store a list somewhere, say in a Lua array. Populating it will take a while, but is inevitable. There are probably lists already out there, but if not, you could use a tool like this: List of Random Names (first relevant thing I found when I searched, and seems decent). Just export as text and stuff into an array, then add quotes and commas. Do this a bunch of times to build a big list, removing duplicates if you care. Later if you add user-provided names you can read from a file.
Then just have stuff like:
local Names = { "Adam", -- could be tables to add metadata like male / female, nationality, is a nickname, etc. "Alice", "Amy", -- and so on } -- other code local CurrentName local function PutUpRandomName (group) local name = Names[math.random(#Names)] display.remove(CurrentName) -- in case some name is still showing CurrentName = display.newText(group, name, display.contentCenterX, display.contentCenterY, native.systemFontBold, 50) -- set color, apply transitions, etc. end local function RemoveName () if CurrentName then -- fade the old name out transition.to(CurrentName, { alpha = 0, time = 1000, onComplete = display.remove }) end CurrentName = nil end
and call them where appropriate.
Hi StarCrunch,
Thanks for your help.
And if i wuold like to write the player’s names in the main menu, using a text box, how I can do that? Is ti possible?
For example:
Player1 = --type the name of the player here
Player2 = --type the name of the player here
and so on…
Sure, just use one of these:
Make sure to read the “Gotchas”, just in case those would affect you.
Hi StarCrunch,
I’m still in trouble with my project, I’m trying to use the native.newTextField() method but.
I don’t know how to join my players.lua (where i should writhe the names) and my game.lua (where it should spawn the names).
With the putUpRandomNames function whe i stop the wheel nothing happends or it’s not displayed and no errors
This is my players.lua nativeNewText code:
[lua] local createPlayer = display.newEmbossedText( sceneGroup, “Players”, centerX, 40, “youmurderer”, 60 )
createPlayer:setFillColor( 0.8,0.2,0.2 )
local color =
{
highlight = { r=1, g=1, b=1 },
shadow = { r=0.8, g=0.2, b=0.2 }
}
createPlayer:setEmbossColor( color )
local function onUserPlayerInput( event )
local phase = event.phase
if “editing” == phase then
game.name = event.text
elseif “submitted” == phase or “ended” == phase then
native.setKeyboardFocus( nil )
end
end
– The Player’s name field
local PlayerField = native.newTextField( 20, 50, 280, 30 )
PlayerField.x = display.contentCenterX
PlayerField.y = createPlayer.y + createPlayer.contentHeight + 15
PlayerField.placeholder = “Player Name”
PlayerField:addEventListener( “userInput”, onUserPlayerInput )
PlayerField:setReturnKey( “done” )
PlayerField.inputType = “name”
self.PlayerField = PlayerField
[/lua]
When i try to write a player’s name it gave me an error. If you need more code or you need to check my files just ask.
Please help
P.S.
I’m sorry for my bad english
In case you still need it, Rob actually just put up a list of the text tutorials last night:
Tutorial Treasury: Native text input fields/boxes
The clean way to share code will be to make modules. It sounds like you’ve been doing so, since you have separate files.
You should put game.name somewhere (per player) and then add a function or two to players.lua to get those names. Basically, update your current structure to something like:
-- updated players.lua local M = {} -- module table -- Add most / all of your current code here -- Add some utility functions -- Get a player's name -- This is just an example. Write this in whatever way is nicest for you. -- You could even just make one function per player. function M.GetName (which) if which == "player1" then return Player1Name elseif which == "player2" then return Player2Name -- etc. end end return M -- export your module
Then in game.lua , do a require(“players”) and call your functions somewhere appropriate:
local players = require("players") -- Your code... local Name = players.GetName("player1") -- or add it to an array, if following the earlier approach -- in that case, you should also remove it, post-level -- do stuff with nameThanks for the quick answer!
I’ll modify my project and i’ll continue to crash my head on the screen 
and keep the post updated.
P.S.
In the post of my code, at line 15, you can find what you was talking about ( game.name )
Hello there,
after many attempts these are my issues:
code:
[lua] local function onUserPlayerInput( event )
local phase = event.phase
if “editing” == phase then
src.game.name = event.text
elseif “submitted” == phase or “ended” == phase then
native.setKeyboardFocus( nil )
end
end [/lua]
code:
[lua] local Name = players.GetName(“player1”) [/lua]
And here is part of my players.lua code:
[lua]
– Create a module table
local M = {"…"}
– Create a label showing which scene this is
local label = display.newEmbossedText( sceneGroup, “Players”, centerX, 40, “youmurderer”, 60 )
label:setFillColor( 0.8,0.2,0.2 )
local color =
{
highlight = { r=1, g=1, b=1 },
shadow = { r=0.8, g=0.2, b=0.2 }
}
label:setEmbossColor( color )
– Create a label for the text field
local function onUserPlayerInput( event )
local phase = event.phase
if “editing” == phase then
src.game.name = event.text
elseif “submitted” == phase or “ended” == phase then
native.setKeyboardFocus( nil )
end
end
– The Player’s name field
local Player1Field = native.newTextField( 20, 50, 280, 30 )
Player1Field.x = display.contentCenterX
Player1Field.y = label.y + label.contentHeight + 15
Player1Field.placeholder = “Player1 Name”
Player1Field:addEventListener( “userInput”, onUserPlayerInput )
Player1Field:setReturnKey( “done” )
Player1Field.inputType = “name”
self.Player1Field = Player1Field
local Player2Field = native.newTextField( 20, 50, 280, 30 )
Player2Field.x = display.contentCenterX
Player2Field.y = label.y + label.contentHeight + 55
Player2Field.placeholder = “Player2 Name”
Player2Field:addEventListener( “userInput”, onUserPlayerInput )
Player2Field:setReturnKey( “done” )
Player2Field.inputType = “name”
self.Player2Field = Player2Field
local Player3Field = native.newTextField( 20, 50, 280, 30 )
Player3Field.x = display.contentCenterX
Player3Field.y = label.y + label.contentHeight + 95
Player3Field.placeholder = “Player3 Name”
Player3Field:addEventListener( “userInput”, onUserPlayerInput )
Player3Field:setReturnKey( “done” )
Player3Field.inputType = “name”
self.Player3Field = Player3Field
local Player4Field = native.newTextField( 20, 50, 280, 30 )
Player4Field.x = display.contentCenterX
Player4Field.y = label.y + label.contentHeight + 135
Player4Field.placeholder = “Player4 Name”
Player4Field:addEventListener( “userInput”, onUserPlayerInput )
Player4Field:setReturnKey( “done” )
Player4Field.inputType = “name”
self.Player4Field = Player4Field
local Player5Field = native.newTextField( 20, 50, 280, 30 )
Player5Field.x = display.contentCenterX
Player5Field.y = label.y + label.contentHeight + 175
Player5Field.placeholder = “Player5 Name”
Player5Field:addEventListener( “userInput”, onUserPlayerInput )
Player5Field:setReturnKey( “done” )
Player5Field.inputType = “name”
self.Player5Field = Player5Field
local Player6Field = native.newTextField( 20, 50, 280, 30 )
Player6Field.x = display.contentCenterX
Player6Field.y = label.y + label.contentHeight + 215
Player6Field.placeholder = “Player6 Name”
Player6Field:addEventListener( “userInput”, onUserPlayerInput )
Player6Field:setReturnKey( “done” )
Player6Field.inputType = “name”
self.Player6Field = Player6Field
local Player7Field = native.newTextField( 20, 50, 280, 30 )
Player7Field.x = display.contentCenterX
Player7Field.y = label.y + label.contentHeight + 255
Player7Field.placeholder = “Player7 Name”
Player7Field:addEventListener( “userInput”, onUserPlayerInput )
Player7Field:setReturnKey( “done” )
Player7Field.inputType = “name”
self.Player7Field = Player7Field
local Player8Field = native.newTextField( 20, 50, 280, 30 )
Player8Field.x = display.contentCenterX
Player8Field.y = label.y + label.contentHeight + 295
Player8Field.placeholder = “Player8 Name”
Player8Field:addEventListener( “userInput”, onUserPlayerInput )
Player8Field:setReturnKey( “done” )
Player8Field.inputType = “name”
self.Player8Field = Player8Field
– Get a player’s name
function M.GetName(which)
if which == “player1” then
return Player1Field
elseif which == “player2” then
return Player2Field
elseif which == “player3” then
return Player3Field
elseif which == “player4” then
return Player4Field
elseif which == “player5” then
return Player5Field
elseif which == “player6” then
return Player6Field
elseif which == “player7” then
return Player7Field
elseif which == “player8” then
return Player8Field
end
end
[/lua]
Hi.
A few things.
You should return your module table at the end:
return M
Otherwise you’ll just get (at most) true when you do require(“x”).
If your modules are in a directory, you should do this instead:
local game = require("src.game") local players = require("src.players")
In the code, you would still just use your variable’s name, game or players in this case.
Right now, it looks like you’re assigning the name directly to the same variable ( src.game.name , above) from any text field. But maybe instead it would be cleaner to just ask for it on demand, as for example
local name = players.GetName("player1").text -- use nameOk StarCrunch thanks for your help.
Now after the last updates my project gave back an error when i try to open the game.lua or players.lua:
loop or previous error loading module ‘src.players’
loop or previous error loading module ‘src.game’
Okay, this happens when module A requires module B, but module B also requires module A. Also, if you dropped in my example verbatim, the module might be trying to require() itself! Thus the “loop”.
I haven’t seen all of your code, of course, but I suspect if you follow my suggestion in the previous post (get the name on demand, instead of assigning it directly in the textbox), you could structure it as:
main.lua - require src.game ; if necessary, also src.players
src/game.lua - require src.players
src/players.lua - no requiring
(If you do have legitimate loops, there are ways around them. But this doesn’t look like one of those cases.)
Ok now i can load the modules,
but when load the game.lua scene I’v got an error: attempt to call field ‘GetName’ (a nil value)
Hmm, this sounds like some little problem happened somewhere.
Make sure you have
local players = require("src.players")
and later,
local name = players.GetName("player1") -- or something like this, anyway
in game.lua.
That’s one guess, either that you accidentally require()'d into the wrong variable or, instead, tried calling from the wrong one.
You didn’t accidentally make GetName() local, did you? Or forget to put it in M? Or maybe you were moving things around and put it somewhere else ( game.lua?) by mistake?
[lua]
require “src.players”
local players = require(“src.players”)
local composer = require( “composer” )
local scene = composer.newScene()
local physics = require(“physics”)
physics.start()
physics.setGravity(0,0)
physics.setDrawMode(“normal”)
– LOCALS –
– Variables
local w = display.contentWidth
local h = display.contentHeight
local centerX = display.contentCenterX
local centerY = display.contentCenterY
– Forward Declarations
local onBack
– Useful Localizations
local mAbs = math.abs
local mRand = math.random
local mDeg = math.deg
local mRad = math.rad
local mCos = math.cos
local mSin = math.sin
local mAcos = math.acos
local mAsin = math.asin
local mSqrt = math.sqrt
local mCeil = math.ceil
local mFloor = math.floor
local mAtan2 = math.atan2
local mPi = math.pi
local getInfo = system.getInfo
local getTimer = system.getTimer
local strMatch = string.match
local strFormat = string.format
local pairs = pairs
– Scene Methods
function scene:create( event )
local sceneGroup = self.view
local background = display.newImage(sceneGroup, “background.png”)
background.x = display.contentCenterX
background.y = display.contentCenterY
local arms = display.newImage(sceneGroup, “arms1.png”, true)
arms.x = display.contentWidth - 134
arms.y = display.contentHeight - 290
local nail = display.newCircle(sceneGroup, 124.91, 212, 4)
physics.addBody(nail, “static”,{bounce=0, friction=0.2, radius=4})
local wheel = display.newImage(sceneGroup, “wheel1.png”, true)
wheel.x = display.contentWidth - 195
wheel.y = display.contentHeight - 268
physics.addBody(wheel, “dynamic”,{bounce=0, friction=0.2, radius=1})
wheel.angularDamping = 0.4
local skull = display.newImage(sceneGroup, “skull1.png”, true)
skull.x = display.contentWidth - 190
skull.y = display.contentHeight - 379
local Name = players.GetName(“player1”).text
local label = display.newEmbossedText( sceneGroup, “Presents…”, centerX, 280, “youmurderer”, 40 )
label:setFillColor( 0.8,0.2,0.2 )
local color =
{
highlight = { r=1, g=1, b=1 },
shadow = { r=0.8, g=0.2, b=0.2 }
}
label:setEmbossColor( color )
display.remove(label)
local joint = physics.newJoint(“pivot”, wheel, nail, 124.91, 212)
local push1 = PushButton( sceneGroup, centerX, 370, “Back”, onBack,
{ labelColor = {0.8,0.2,0.2}, labelSize = 28 } )
local spinObject = function(event)
local wheel = event.target
local phase = event.phase
local stage = display.getCurrentStage()
if “began” == phase then
stage:setFocus(wheel, event.id)
wheel.isFocus = true
wheel.tempJoint = physics.newJoint(“touch”, wheel, event.x, event.y)
elseif wheel.isFocus then
if “moved” == phase then
wheel.tempJoint:setTarget(event.x, event.y)
elseif “ended” == phase or “cancelled” == phase then
local CurrentName
local function PutUpRandomName (group)
local name = Name[math.random(#Name)]
display.remove(CurrentName) – in case some name is still showing
CurrentName = display.newText(group, name, display.contentCenterX, display.contentCenterY, native.systemFontBold, 50)
– set color, apply transitions, etc.
end
stage:setFocus(wheel, nil)
wheel.isFocus = false
wheel.tempJoint:removeSelf()
end
end
return true
end
wheel:addEventListener(“touch”, spinObject)
end
----------------------------------------------------------------------
----------------------------------------------------------------------
function scene:willEnter( event )
local sceneGroup = self.view
end
function scene:didEnter( event )
local sceneGroup = self.view
end
function scene:willExit( event )
local sceneGroup = self.view
end
function scene:didExit( event )
local sceneGroup = self.view
end
function scene:destroy( event )
local sceneGroup = self.view
end
----------------------------------------------------------------------
– FUNCTION/CALLBACK DEFINITIONS –
----------------------------------------------------------------------
onBack = function ( self, event )
local options =
{
effect = “fromTop”, – See list here: http://docs.coronalabs.com/daily/api/library/composer/gotoScene.html
time = 500,
params =
{
arg1 = “value”,
arg2 = 0
}
}
composer.gotoScene( “src.mainMenu”, options )
return true
end
---------------------------------------------------------------------------------
– Scene Dispatch Events, Etc. - Generally Do Not Touch Below This Line
---------------------------------------------------------------------------------
function scene:show( event )
local sceneGroup = self.view
local willDid = event.phase
if( willDid == “will” ) then
self:willEnter( event )
elseif( willDid == “did” ) then
physics.start()
self:didEnter( event )
end
end
function scene:hide( event )
local sceneGroup = self.view
local willDid = event.phase
if( willDid == “will” ) then
physics.pause()
self:willExit( event )
elseif( willDid == “did” ) then
self:didExit( event )
end
end
function scene:destroy( event )
local sceneGroup = self.view
physics.stop()
end
scene:addEventListener( “create”, scene )
scene:addEventListener( “show”, scene )
scene:addEventListener( “hide”, scene )
scene:addEventListener( “destroy”, scene )
---------------------------------------------------------------------------------
return scene
[/lua]
This is my game.lua
Ah, I didn’t quite realize players.lua was a scene. (I did see self, so I should have guessed…)
What I would recommend is to add another file, player_names.lua , that is not a scene. Something like:
local M = {} local TextFields = {} --- Get the current list of names as an array of strings. function M.GetNameList () local list = {} for \_, text\_field in ipairs(TextFields) do list[#list + 1] = text\_field.text -- Add the current text to the list end return list end --- Register another text field so we can use it to build our list later. function M.RegisterTextField (text\_field) TextFields[#TextFields + 1] = text\_field end return M
This will replace local M = {} , M.GetName() and return M in players.lua. Instead, just register all your text fields, probably in its scene:create() function:
local player\_names = require("src.player\_names") -- at the top -- other code player\_names.RegisterTextField(Player1Field) player\_names.RegisterTextField(Player2Field) -- etc...
In game.lua , again, require() that same module (and remove both require(“src.players”) calls).
Then, use player_names.GetNameList() to initialize Name. You will probably want to move this into scene:didEnter().
Actually, you might have problems with the Name and CurrentName variables, if you’re still unfamiliar with things like scope. A better idea for now might be to use self.names and self.current_name (or whatever you want to call them) instead.
Hi.
This could be a couple questions. One is just the display part of it, but that’s fairly basic usage of display.newText() and text:removeSelf(), so I’m going to assume it’s not where you’re having trouble.
If coming up with the string is the problem, you’ll need to store a list somewhere, say in a Lua array. Populating it will take a while, but is inevitable. There are probably lists already out there, but if not, you could use a tool like this: List of Random Names (first relevant thing I found when I searched, and seems decent). Just export as text and stuff into an array, then add quotes and commas. Do this a bunch of times to build a big list, removing duplicates if you care. Later if you add user-provided names you can read from a file.
Then just have stuff like:
local Names = { "Adam", -- could be tables to add metadata like male / female, nationality, is a nickname, etc. "Alice", "Amy", -- and so on } -- other code local CurrentName local function PutUpRandomName (group) local name = Names[math.random(#Names)] display.remove(CurrentName) -- in case some name is still showing CurrentName = display.newText(group, name, display.contentCenterX, display.contentCenterY, native.systemFontBold, 50) -- set color, apply transitions, etc. end local function RemoveName () if CurrentName then -- fade the old name out transition.to(CurrentName, { alpha = 0, time = 1000, onComplete = display.remove }) end CurrentName = nil end
and call them where appropriate.
Hi StarCrunch,
Thanks for your help.
And if i wuold like to write the player’s names in the main menu, using a text box, how I can do that? Is ti possible?
For example:
Player1 = --type the name of the player here
Player2 = --type the name of the player here
and so on…
Sure, just use one of these:
Make sure to read the “Gotchas”, just in case those would affect you.
Hi StarCrunch,
I’m still in trouble with my project, I’m trying to use the native.newTextField() method but.
I don’t know how to join my players.lua (where i should writhe the names) and my game.lua (where it should spawn the names).
With the putUpRandomNames function whe i stop the wheel nothing happends or it’s not displayed and no errors
This is my players.lua nativeNewText code:
[lua] local createPlayer = display.newEmbossedText( sceneGroup, “Players”, centerX, 40, “youmurderer”, 60 )
createPlayer:setFillColor( 0.8,0.2,0.2 )
local color =
{
highlight = { r=1, g=1, b=1 },
shadow = { r=0.8, g=0.2, b=0.2 }
}
createPlayer:setEmbossColor( color )
local function onUserPlayerInput( event )
local phase = event.phase
if “editing” == phase then
game.name = event.text
elseif “submitted” == phase or “ended” == phase then
native.setKeyboardFocus( nil )
end
end
– The Player’s name field
local PlayerField = native.newTextField( 20, 50, 280, 30 )
PlayerField.x = display.contentCenterX
PlayerField.y = createPlayer.y + createPlayer.contentHeight + 15
PlayerField.placeholder = “Player Name”
PlayerField:addEventListener( “userInput”, onUserPlayerInput )
PlayerField:setReturnKey( “done” )
PlayerField.inputType = “name”
self.PlayerField = PlayerField
[/lua]
When i try to write a player’s name it gave me an error. If you need more code or you need to check my files just ask.
Please help
P.S.
I’m sorry for my bad english
In case you still need it, Rob actually just put up a list of the text tutorials last night:
Tutorial Treasury: Native text input fields/boxes
The clean way to share code will be to make modules. It sounds like you’ve been doing so, since you have separate files.
You should put game.name somewhere (per player) and then add a function or two to players.lua to get those names. Basically, update your current structure to something like:
-- updated players.lua local M = {} -- module table -- Add most / all of your current code here -- Add some utility functions -- Get a player's name -- This is just an example. Write this in whatever way is nicest for you. -- You could even just make one function per player. function M.GetName (which) if which == "player1" then return Player1Name elseif which == "player2" then return Player2Name -- etc. end end return M -- export your module
Then in game.lua , do a require(“players”) and call your functions somewhere appropriate:
local players = require("players") -- Your code... local Name = players.GetName("player1") -- or add it to an array, if following the earlier approach -- in that case, you should also remove it, post-level -- do stuff with name