Runtime error
?:0: attempt to index a nil value
stack traceback:
?: in function ‘cancel’
C:\Users\brandon\Documents\Corona Projects\MineDodge\game.lua:146: in fu
nction <C:\Users\brandon\Documents\Corona Projects\MineDodge\game.lua:144>
?: in function <?:221>
I am getting this error
I don’t have skype . This is line 146
timer.cancel( fnCounter\_timer )Can you just send me the file over email? I’m free right now and can just fix this…
Email – REMOVED
I’m just tired of saying the same thing over and over without getting anywhere.
–SonicX278
I did
Ok ill email you from here.
–SonicX278
Are you using composer cause if so you could make it so when you change scenes it makes timer 0 so you would write timer= 0 in the section where you change scenes. Ps. i have not tested this oh.i fogot to add that before you call the code above you do timer.cancel
I’m usings storyboard
It should still work actually. Just try it out.
No it doesn’t work . I tried putting it where the game goes into the restart screen it didn’t work , then i tried putting it where the restart goes back into the screen and it still didn’t work
Simply just remove the timer and then re add it.
local yourTimer timer.cancel(yourTimer) yourTimer = timer.performWithDelay( timeHere, functionHere, howMuchItRepeatsHere )
Good Luck!
–SonicX278
It doesn’t work
“It doesn’t work” won’t help us solve your problem or help atleast. Can you post some code?
–SonicX278
game.lua
-- requires local ads = require "ads" local physics = require "physics" physics.start() local storyboard = require( "storyboard" ) local scene = storyboard.newScene() -- background function scene:createScene(event) ads.hide() local screenGroup = self.view local background = display.newImageRect("bg.png",display.contentWidth,display.contentHeight) background.x = display.contentCenterX background.y = display.contentCenterY screenGroup:insert(background) ceiling = display.newImage("invisibleTile.png") ceiling.x = 0 ceiling.y = -29 physics.addBody(ceiling, "static", {density=.1, bounce=0.2, friction=.2}) screenGroup:insert(ceiling) theFloor = display.newImage("invisibleTile.png") theFloor.x = 0 theFloor.y = 347 physics.addBody(theFloor, "static", {density=.1, bounce=0.2, friction=.2}) screenGroup:insert(theFloor) city1 = display.newImage("city1.png") city1.x = 240 city1.y = 210 city1.speed = 2 screenGroup:insert(city1) city2 = display.newImage("city1.png") city2.x = 240 city2.y = 270 city2.speed = 2 screenGroup:insert(city2) city3 = display.newImage("city2.png") city3.x = 240 city3.y = 270 city3.speed = 3 screenGroup:insert(city3) city4 = display.newImage("city2.png") city4.x = 240 city4.y = 270 city4.speed = 3 screenGroup:insert(city4) jet = display.newImage("redJet.png") jet.x = 100 jet.y = 100 physics.addBody(jet, "dynamic", {density=.1, bounce=0.1, friction=.2, radius=12}) screenGroup:insert(jet) mine1 = display.newImage("mine.png") mine1.x = 500 mine1.y = 100 mine1.speed = math.random(2,8) mine1.initY = mine1.y mine1.amp = math.random(20, 140) mine1.angle = math.random(1, 360) physics.addBody(mine1, "static", {density=.1, bounce=0.2, friction=.2, radius=12}) screenGroup:insert(mine1) mine2 = display.newImage("mine.png") mine2.x = 500 mine2.y = 100 mine2.speed = math.random(4,6) mine2.initY = mine2.y mine2.amp = math.random(20, 140) mine2.angle = math.random(1, 360) physics.addBody(mine2, "static", {density=.1, bounce=0.2, friction=.2, radius=12}) screenGroup:insert(mine2) mine3 = display.newImage("mine.png") mine3.x = 500 mine3.y = 140 mine3.speed = math.random(4,8) mine3.initY = mine3.y mine3.amp = math.random(20, 150) mine3.angle = math.random(1, 360) physics.addBody(mine3, "static", {density=.1, bounce=0.2, friction=.2, radius=12}) screenGroup:insert(mine3) mine4 = display.newImage("mine.png") mine4.x = 500 mine4.y = 90 mine4.speed = math.random(2,10) mine4.initY = mine4.y mine4.amp = math.random(20, 100) mine4.angle = math.random(1, 260) physics.addBody(mine4, "static", {density=.1, bounce=0.2, friction=.2, radius=12}) screenGroup:insert(mine4) mine5 = display.newImage("mine.png") mine5.x = 500 mine5.y = 50 mine5.speed = math.random(2,6) mine5.initY = mine5.y mine5.amp = math.random(20, 130) mine5.angle = math.random(1, 360) physics.addBody(mine5, "static", {density=.1, bounce=0.2, friction=.2, radius=12}) screenGroup:insert(mine5) mine6 = display.newImage("mine.png") mine6.x = 150 mine6.y = 450 mine6.speed = math.random(2,8) mine6.initY = mine6.y mine6.amp = math.random(20, 130) mine6.angle = math.random(1, 360) physics.addBody(mine6, "static", {density=.1, bounce=0.2, friction=.2, radius=12}) screenGroup:insert(mine6) end \_W = display.contentWidth \_H = display.contentHeight number = 0 local txt\_counter = display.newText( number, 0, 0, native.systemFont, 20 ) txt\_counter.x = \_W/7 txt\_counter.y = \_H/7 txt\_counter:setTextColor( 255, 255, 255 ) function fn\_counter() number = number + 1 txt\_counter.text = number end local fnCounter\_timer = timer.performWithDelay(1000, fn\_counter, 0) function scrollCity( self, event ) if self.x \< -200 then self.x = 200 else self.x = self.x - self.speed end end function onCollision( event ) if event.phase =="began" then storyboard.gotoScene("restart", "fade", 400) timer.cancel( fnCounter\_timer ) end end function moveMines( self, event ) if self.x \< -50 then self.x = 500 self.y = math.random(90, 220) self.speed = math.random(4,8) self.initY = mine1.y self.amp = math.random(20, 100) self.angle = math.random(1, 360) else self.x = self.x - self.speed self.angle = self.angle + .1 self.y = self.amp\*math.sin(self.angle)+self.initY end end -- jet function activateJets( self, event ) self:applyForce(0, -3.5, self.x, self.y) end function touchScreen( event ) if event.phase == "began" then jet.enterFrame = activateJets Runtime: addEventListener("enterFrame", jet) end if event.phase == "ended" then Runtime: removeEventListener("enterFrame", jet) end end function scene:enterScene(event) city1.enterFrame = scrollCity Runtime:addEventListener("enterFrame", city1) city2.enterFrame = scrollCity Runtime:addEventListener("enterFrame", city2) city3.enterFrame = scrollCity Runtime:addEventListener("enterFrame", city3) city4.enterFrame = scrollCity Runtime:addEventListener("enterFrame", city4) mine1.enterFrame = moveMines Runtime:addEventListener("enterFrame", mine1) mine2.enterFrame = moveMines Runtime:addEventListener("enterFrame", mine2) mine3.enterFrame = moveMines Runtime:addEventListener("enterFrame", mine3) mine4.enterFrame = moveMines Runtime:addEventListener("enterFrame", mine4) mine5.enterFrame = moveMines Runtime:addEventListener("enterFrame", mine5) mine6.enterFrame = moveMines Runtime:addEventListener("enterFrame", mine6) Runtime:addEventListener("touch", touchScreen) Runtime:addEventListener("collision", onCollision) end function scene:exitScene(event) Runtime:removeEventListener("touch", touchScreen) Runtime:removeEventListener("enterFrame", city1) Runtime:removeEventListener("enterFrame", city2) Runtime:removeEventListener("enterFrame", city3) Runtime:removeEventListener("enterFrame", city4) Runtime:removeEventListener("enterFrame", mine1) Runtime:removeEventListener("enterFrame", mine2) Runtime:removeEventListener("enterFrame", mine3) Runtime:removeEventListener("enterFrame", mine4) Runtime:removeEventListener("enterFrame", mine6) Runtime:removeEventListener("collision", onCollision) end function scene:destroyScene(event) end scene:addEventListener("createScene", scene) scene:addEventListener("enterScene", scene) scene:addEventListener("exitScene", scene) scene:addEventListener("destroyScene", scene) return scene
restart.lua
– requires
local ads = require “ads”
local storyboard = require( “storyboard” )
local scene = storyboard.newScene()
– background
local function adListener( event )
if ( event.isError ) then
end
end
ads.init( “admob”, “ca-app-pub-8392055366133178/5358470847”, adListener )
ads.show( “banner”, { x=0, y=0, appId=“ca-app-pub-8392055366133178/5358470847” } )
local function adListener( event )
if ( event.isError ) then
end
end
ads.init( “admob”, “ca-app-pub-8392055366133178/9559841245”, adListener )
ads.show( “interstitial”, { x=0, y=0, appId=“ca-app-pub-8392055366133178/9559841245” } )
function scene:createScene(event)
local screenGroup = self.view
background = display.newImageRect(“restart.png”,display.contentWidth,display.contentHeight)
background.x = display.contentCenterX
background.y = display.contentCenterY
screenGroup:insert(background)
city2 = display.newImage(“city1.png”)
city2.x = 230
city2.y = 220
city2.speed = 2
screenGroup:insert(city2)
end
function start( event )
if event.phase == “began” then
storyboard.gotoScene(“game”, “fade”, 400)
fnCounter_timer = timer.performWithDelay()
end
end
function scene:enterScene(event)
storyboard.purgeScene(“game”)
background:addEventListener(“touch”, start)
end
function scene:exitScene(event)
background:removeEventListener(“touch”, start)
end
function scene:destroyScene(event)
end
scene:addEventListener(“createScene”, scene)
scene:addEventListener(“enterScene”, scene)
scene:addEventListener(“exitScene”, scene)
scene:addEventListener(“destroyScene”, scene)
return scene
That’s to much to look through as in on my phone. Can you cut it down to the basics.?
–SonicX278
the timer in my game.lua file .
\_W = display.contentWidth \_H = display.contentHeight number = 0 local txt\_counter = display.newText( number, 0, 0, native.systemFont, 20 ) txt\_counter.x = \_W/7 txt\_counter.y = \_H/7 txt\_counter:setTextColor( 255, 255, 255 ) function fn\_counter() number = number + 1 txt\_counter.text = number end local fnCounter\_timer = timer.performWithDelay(1000, fn\_counter, 0) function onCollision( event ) if event.phase =="began" then storyboard.gotoScene("restart", "fade", 400) timer.cancel( fnCounter\_timer ) end end
timer reset in restart.lua file
function start( event ) if event.phase == "began" then storyboard.gotoScene("game", "fade", 400) fnCounter\_timer = timer.performWithDelay() end endYou can’t do that. You can’t add a local variable in one file and try to cancel it in another… What you could do is chekc it timer is nil and then make a new time in the game.lua.
I want the timer to stop when the user dies and then reset when the user restarts the game
Exactly.
–SonicX278
Yes .
I dont know if i mentioned this but in scene destroy try adding local number = 0 and the timer.cancel