Cant figure out what the problem is
while wait(.5) do
local children = game.Players:GetChildren("Humanoid")
for i = 1, #children do
local hum = children[i] .Character.Humanoid
hum.HeadScale.Value = children[i].leaderstats.Points.Value/50 +1
hum.BodyHeightScale.Value = children[i].leaderstats.Points.Value/50 +1
hum.BodyWidthScale.Value = children[i].leaderstats.Points.Value/50 +1
hum.BodyDepthScale.Value = children[i].leaderstats.Points.Value/50 +1
hum.WalkSpeed = children[i].leaderstats.Points.Value/3.12
hum.JumpPower = children[i].leaderstats.Points.Value
hum.MaxHealth = children[i].leaderstats.Points.Value+25
end
end
was trying to get a simple size script to work.
The attempt to index nil with Humanoid error is telling you that the object that you are trying to grab the Humanoid out of doesn't exist. This line specifically :
local hum = children[i].Character.Humanoid
When a player joins the game, there is an indeterminate amount of time before their character model actually spawns into the world. So between when they join and when their character spawns, the Player.Character property is nil.
Your code does not handle the possibility that the character model is nil, and you are trying to access the humanoid immediately.
A safer approach is not to use a loop, but to observe changes to the leaderstats values and react to those changes. So in your code that creates your leaderstats objects, do something like this :
local Players = game:GetService("Players")
local function updateCharacter(hum : Humanoid, points : number)
local bodyScale = (points / 50) + 1
local walkSpeed = points / 3.12
local jump = points
local health = points + 25
hum.HeadScale.Value = bodyScale
hum.BodyHeightScale.Value = bodyScale
hum.BodyWidthScale.Value = bodyScale
hum.BodyDepthScale.Value = bodyScale
hum.WalkSpeed = walkSpeed
hum.JumpPower = jump
hum.MaxHealth = health
end
Players.PlayerAdded:Connect(function(player)
-- when a player joins the game, give them a leaderstats folder
local leaderstatsFolder = Instance.new("Folder")
leaderstatsFolder.Name = "leaderstats"
local pointsValue = Instance.new("IntValue", leaderstats)
pointsValue.Name = "Points"
pointsValue.Value = 0 -- or load from dataStores
leaderstatsFolder.Parent = player
-- listen for changes to the points and resize the character
pointsValue.Changed:Connect(function(newValue)
-- escape if the character doesn't exist
local character = player.Character
if character then
updateCharacter(character.Humanoid, newValue)
end
end)
-- when the character model spawns into the world, update it immediately with the player's point size
player.CharacterAdded:Connect(function(character)
updateCharacter(character.Humanoid, pointsValue.Value)
end)
end)
So when I click it 10 times it mines however it only give coins to me when someone else mines it. I have no clue really what to do so i need help. Ok so here is the script:
game.Players.PlayerAdded:Connect(function(player)
script.Parent:Clone()
local money = player:WaitForChild("leaderstats").Money
script.Parent.ClickDetector.MouseClick:Connect(function()
local billboard = script.Parent.BillboardGui
print(health)
health = health - 1
billboard.Enabled = true
billboard.TextLabel.Text = health
if health == 0 then
local clickdetector = script.Parent.ClickDetector
billboard.Enabled = false
money.Value = money.Value + 100
script.Parent.ClickDetector.Parent = nil
script.Parent.Union.Transparency = 1
script.Parent.Union.CanCollide = false
wait(5)
clickdetector.Parent = script.Parent
script.Parent.Union.Transparency = 0
script.Parent.Union.CanCollide = true
health = 10
end
end)
end)
The problem is that you need to make sure the player variable matches the player that clicked it.
script.Parent.ClickDetector.MouseClick:Connect(function()
should be:
script.Parent.ClickDetector.MouseClick:Connect(function(clicker)
and use an if statement:
if clicker == player then
--code that gives points
end
Also when you clone the parent it clones the script so that may cause bugs.
is there a touch and hold event in Corona sdk, If not then how to do that. for example. i want to increase the radius of a circle while holding anywhere on the screen, and without moving. how to do that.
'
thanx
Try (as I know you can't change radius so I use xScale and yScale to increase circle)
local circle = display.newCircle( display.contentCenterX, display.contentCenterY, 50 )
step = 0.02
local holding = false
local function enterFrameListener()
if holding then
-- Holding button
circle.xScale = circle.xScale + step
circle.yScale = circle.yScale + step
else
-- Not holding
-- Code here
end
end
local function touchHandler( event )
if event.phase == "began" then
Runtime:addEventListener( "enterFrame", enterFrameListener )
holding = true
elseif event.phase == "ended" or event.phase == "moved" then
holding = false
Runtime:removeEventListener( "enterFrame", enterFrameListener )
end
return true
end
Runtime:addEventListener( "touch", touchHandler )
The code borrow from post from stackoverflow.com.
I want to be able to change a node's physicsBody height when the user swipes downwards, but have not been able to find out how to do this, beside resetting the entire physicsBody.
When I originally load the node, I use the below code:
nodeHero.color = UIColor .grayColor()
nodeHero.size.width = 20
nodeHero.size.height = 45
nodeHero.position.x = -frame.size.width/2 + 45
nodeHero.position.y = pointMainY + 30 + nodeHero.size.height/2
nodeHero.zPosition = 110
nodeHero.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(nodeHero.size.width, nodeHero.size.height))
nodeHero.physicsBody?.mass = 1
nodeHero.physicsBody?.angularVelocity = 0
nodeHero.physicsBody?.allowsRotation = false
nodeHero.physicsBody?.restitution = 0
nodeHero.physicsBody?.categoryBitMask = bitHero
addChild(nodeHero)
And when I swipe down, I want to be able to do something like this (this doesn't work):
nodeHero.size.height = 28
nodeHero.physicsBody?.size.height = 28
But instead I have to use the nodeHero.physicsBody = SKPhysicsBody() again, which resets all the other physicsBody properties, so I have to do this:
nodeHero.size.height = 28
nodeHero.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(nodeHero.size.width, nodeHero.size.height))
nodeHero.physicsBody?.mass = 1
nodeHero.physicsBody?.angularVelocity = 0
nodeHero.physicsBody?.allowsRotation = false
nodeHero.physicsBody?.restitution = 0
nodeHero.physicsBody?.categoryBitMask = bitHero
According to SpriteKit documentation the area of a SKPhysicsBody can't be modified, so you need to create another SKPhysicsBody instance and copy the values you want to keep from the previous instance.
Hey Guys I am making a game using corona sdk and so needed help with the lus code. In this program there are bubbles floating across the screen and colliding with each either as well as with the walls of the screen.
I am using 'Collision Filter' for the collisions and the masking operation and it is working well. But in this game I want a bubble to continuously move unless and until it is tapped upon. I thought of using the frame animation to animate each bubble and then add a separate function that will make it stationary when tapped.
But the problem is that at a time only 1 program seems to wrok fine. So,
1) either the bubbles collide, fall down, bounce against wall and eventually rest down.
2) The bubbles continuously keep moving across the screen, without colliding against each other, and instead pass through the other bubbles
What should I do to animate and inanimate(on tapping that bubble) a colliding bubble.
My code is below,
borderCollisionFilter = { categoryBits = 1, maskBits = 2 } -- collides with (4 & 2) only
local borderBodyElement = { bounce=1.0, filter=borderCollisionFilter }
local borderTop = display.newRect( 0, 0, 480, 1 )
borderTop:setFillColor( 0, 0, 0, 0) -- make invisible
physics.addBody( borderTop, "static", borderBodyElement )
local borderBottom = display.newRect( 0, 318, 480, 1 )
borderBottom:setFillColor( 0, 0, 0, 0) -- make invisible
physics.addBody( borderBottom, "static", borderBodyElement )
local borderLeft = display.newRect( 0, 0, 1, 320 )
borderLeft:setFillColor( 0, 0, 0, 0) -- make invisible
physics.addBody( borderLeft, "static", borderBodyElement )
local borderRight = display.newRect( 480, 1, 1, 320 )
borderRight:setFillColor( 0, 0, 0, 0) -- make invisible
physics.addBody( borderRight, "static", borderBodyElement )
--BUBBLES
local bubbleCollisionFilter = { categoryBits = 2, maskBits = 7 }
bubble = {bounce=0.94, radius=18,filter = bubbleCollisionFilter }
local bubble1 = display.newImage( "bubble.png", 50, 50 )
physics.addBody( bubble1, bubble )
local bubble2 = display.newImage( "bubble.png", 100, 230 )
physics.addBody( bubble2, bubble )
local bubble3 = display.newImage( "bubble.png", 180, 200 )
physics.addBody( bubble3, bubble )
local bubble4 = display.newImage( "bubble.png", 90, 30 )
physics.addBody( bubble4, bubble )
--MINIONS
minionCollisionFilter = { categoryBits = 4, maskBits = 2 }
minionBodyElement = { bounce=0.8, filter=minionCollisionFilter }
local c1 = display.newImage("str-minion-small.png")
c1.isVisible=false
physics.addBody( c1, "static", minionBodyElement )
local c2 = display.newImage("str-minion-mid.png")
c2.isVisible=false
physics.addBody( c2, "static", minionBodyElement )
local c3 = display.newImage("str-minion-big.png")
c3.isVisible=false
physics.addBody( c3, "static", minionBodyElement )
--SPAWNING
local function spawnDisk( event )
local phase = event.phase
local volumeBar = display.newLine( 0, 0, 1, 0 )
volumeBar.y = 400
volumeBar.x = 20
local v = 20*math.log(r:getTunerVolume())
local MINTHRESH = 30
local LEFTMARGIN = 20
local v2 = MINTHRESH + math.max (v, -MINTHRESH)
v2 = (display.contentWidth - 1 * LEFTMARGIN ) * v2 / MINTHRESH
volumeBar.xScale = math.max ( 20, v2 )
local l = volumeBar.xScale
local cnt1 = 0
local cnt2 = 0
local cnt3 = 0
local ONE =1
local val = event.numTaps
if "ended" == phase then
if l > 50 and l <=150 then
c1.x=math.random( 10, 450 )
c1.y=math.random( 10, 300 )
physics.addBody( c1, { density=1, radius=10.0 } )
c1.isVisible=true
cnt1= cnt1+ ONE
return c1
elseif l > 100 and l <=250 then
c2.x=math.random( 10, 450 )
c2.y=math.random( 10, 300 )
physics.addBody( c2, { density=2, radius=30.0 } )
c2.isVisible=true
cnt2= cnt2+ ONE
return c2
elseif l >=250 then
c3.x=math.random( 40, 450 )
c3.y=math.random( 40, 300 )
physics.addBody( c3, { density=2, radius=50.0 , bounce=0.0 } )
c3.isVisible=true
cnt3= cnt3+ ONE
return c3
end
end
end
buzzR:addEventListener( "touch", spawnDisk ) --
touch the Button to create minions
Listen for tap events and set objects to static:
http://developer.anscamobile.com/reference/index/bodybodytype
ADDITION: I hadn't bothered to run your code because you claimed the collision masking worked. Now that I actually have tried to run it, I got an error immediately.
First off, you need to require "physics" at the top of your code:
local physics = require("physics")
Then there is a timeout error just a few lines down because you didn't start the physics simulation. The second line of your code should be:
physics.start()
Now I'm going to assume those two lines are actually at the top of your code but you simply didn't paste them here, because I can't imagine you would write a hundred lines of code without ever running it.
However that still leaves more errors. Like, at the bottom of your code it references buzzR but there's no object buzzR defined anywhere.
Please either post code that works or say that you don't have code that works. Sorting through this mess is frustrating.
I have done one application to help with collision masking in Corona SDK, for free of course.
http://developer.anscamobile.com/forum/2011/09/12/coolmasking-take-total-control-over-collision-masking