Hi my objects are not removing after leaving the scene, i have tried to purging and removing the scene, but the objects will just keep on spawning in a other scene?
local badclout1 = {}
local bad1Group = display.newGroup()
local function spawnBC1()
local badclouts1 = display.newImage("BCloud1.png")
badclouts1.x = math.random(0, _W)
physics.addBody( badclouts1, "dynamic", { density=.1, bounce=.1, friction=.2, radius=45 } )
badclouts1.name = "BCloud1"
badclouts1.bodyType = "kinematic"
badclouts1.isSensor = true
badclouts1.y = math.random(-100, -50)
badclouts1.index = #badclout1 + 1
bad1Group:insert(badclouts1)
badclouts1.rotation = math.random(-10,10) -- Rotate the object
badclouts1:setLinearVelocity(0, math.random(speeda1, speedb1)) -- Drop down
badclout1[badclouts1.index] = badclouts1
tmrSpawn1 = timer.performWithDelay(math.random(spawna, spawnb), spawnBC1)
return badclouts1
end
tmrSpawn1 = timer.performWithDelay(math.random(1000, 10000), spawnBC1)
local function removeBomb()
for i, v in pairs(badclout1) do
if badclout1[i].y >1000 then
badclout1[i]:removeSelf()
badclout1[i] = nil
end
end
end
Runtime:addEventListener("enterFrame", removeBomb)
is there something in my code that keeps it on the screen ?
You need to cancel your performWithDelay function using timer.cancel(tmrSpawn1). Because you're calling it recursively, it will just keep going until you cancel it.
Related
I used physics.pause() and physics.start() , it works but my problem is that one function keeps displaying an object at the bottom and when I resume the game, those object are compiled and all of them enter screen at once. I hope someone can help me.
here's my code:
local isPaused = false
function pausePhysics( event )
if "began" == event.phase then
if isPaused == false then
physics.pause(lobo)
isPaused = true
timer.pause(countDownTimer)
local decide = display.newImage("wood.png")
decide.x = display.contentWidth*0.5
decide.y = display.contentHeight*0.5
local yes
local no
local function oo()
if score == 0 then
onBackBtnRelease()
elseif score >0 and score <=10 then
GameOver1()
elseif score >10 and score <=20 then
GameOver2()
else
GameOver3()
end
end
yes = widget.newButton
{
defaultFile= "yes.png",
width=100, height=50,
onRelease = oo
}
yes.x = display.contentWidth*0.3
yes.y = display.contentHeight - 200
local function hindi()
if isPaused == true then
physics.start()
isPaused = false
timer.resume(countDownTimer)
display.remove(decide)
decide = nil
display.remove(yes)
yes = nil
display.remove(no)
no = nil
end
return true
end
no = widget.newButton
{
defaultFile= "no.png",
width=100, height=50,
onRelease = hindi
}
no.x = display.contentWidth*0.7
no.y = display.contentHeight - 200
sceneGroup:insert(decide)
sceneGroup:insert(yes)
sceneGroup:insert(no)
return true
end
end
end
local function tapos(event)
if (event.phase == "began") then
physics.addBody(backBtn, "static")
end
end
Runtime:addEventListener("enterFrame", backBtn)
backBtn:addEventListener("touch", pausePhysics)
local function ulit()
local mRandom = math.random
local balloon = { ("blue.png"), ("green.png"), ("red.png"), ("orange.png"), ("pink.png"), ("violet.png"), ("yellow.png"), ("blue2.png"), ("green2.png"), ("red2.png"), ("orange2.png"), ("pink2.png"), ("violet2.png"), ("yellow2.png") }
local lobo = display.newImage( balloon[mRandom(10)], mRandom(30,270), mRandom(550,650) )
physics.addBody( lobo, { density=0.1, friction=2.0, bounce=0.0, velocity=-40, isSensor=true } );
end
timer.performWithDelay(300,ulit,0)
What is the best way to remove all spawned coins when the game is over?
Here is the code that spawns the coins:
screenGroup = self.view
coin = {}
coinspawn = function()
i = display.newSprite( imageSheet1, sequenceData1 )
i.x = display.contentWidth
i.y = math.random(0, display.contentHeight-50)
i:play()
i.collided = true
i.name = "coin"
physics.addBody(i, "dynamic",
{density=.1, bounce=0.1, friction=.2, shape= shape2 ,filter=playerCollisionFilter }
)
--player.gravityScale = 0.5
coinIntro = transition.to(i,{time=2500, x=display.contentWidth - display.contentWidth -500 ,onComplete=jetReady , transition=easing.OutExpo } ) --
coin[#coin+1] = i
end
tmrcoin = timer.performWithDelay( 1000, coinspawn, 0 )
First you would remove all coins from the display. Then you would clear the coin table:
for i=1,#coin do
coin[i]:removeSelf()
end
coin = {} -- forget all coins
Assuming coin table is the only other place you store your coins, this will do it.
Note that you can't use coin[i]=nil in the loop after removeSelf: as soon as table has holes, the # operator is basically unusable. You can't use table.remove either, because i gets incremented every time, so you'll miss items (try, you'll see). Same issue with pairs: you can't edit a table while iterating through it. You could however do this:
local numCoins = #coin
for i=1,numCoins do
coin[i]:removeSelf()
coin[i]=nil
end
-- now coin is {}
The only reason I can think of to nil N items instead of letting the gc take care of it with one table = {} statement is if you have more than one reference to your coin table (which I would rename to coins, BTW, for clarity).
I am doing a game in corona SDK, but I have this little problem.
I have a menu with a button. If I press it, it sends me to the first level of my game.
When I pass the final level, the game return me to the menu. Bur, if I start playing the first again, my images doesn´t appear.
The images are balls, and to pass the level, you have to eliminate all the balls. To do this, I use:
ball:removeSlef()
ball = nil
But, I don´t think that this is the problem, because I eliminate this lines, and it doesn´t work.
The images are create in scene:createScene function, and insert in the Group.
I short the code of the first level to be understood.
local storyboard = require( "storyboard" )
local scene = storyboard.newScene()
local physics = require "physics"
physics.start(); physics.pause()
physics.setGravity( 0, 0 )
local cont = 0
local bur = {}
function eliminar1( event )
if (cont == 0) and (event.phase == "began") then
event.target:removeSelf()
bur[1] = nil
cont = cont + 1
end
end
function eliminar2( event )
if (cont == 1) and (event.phase == "began") then
bur[2]:removeSelf()
bur[2] = nil
cont = cont + 1
end
end
function eliminar3( event )
if (cont == 2) and (event.phase == "began") then
bur[3]:removeSelf()
bur[3] = nil
storyboard.gotoScene( "levels.1.level2" )
end
end
function scene:createScene ( event )
local screenGroup = self.view
for i = 1,3 do
bur[i] = display.newImage("irudiak/"..i..".png")
bur[i]:translate(math.random(0,280), math.random(0,400) )
physics.addBody( bur[i], {bounce = 0.3 } )
bur[i]:setLinearVelocity(math.random(-50,50), math.random(-50,50) )
screenGroup:insert(bur[i])
end
bur[1]:addEventListener("touch", eliminar1)
bur[2]:addEventListener("touch", eliminar2)
bur[3]:addEventListener("touch", eliminar3)
end
function scene:enterScene( event )
local screenGroup = self.view
physics.start()
end
function scene:exitScene( event )
local screenGroup = self.view
physics.stop()
end
function scene:destroyScene( event )
local screenGroup = self.view
package.loaded[physics] = nil
physics = nil
end
return scene
createScene is ran only first time when you gotoScene. Every next time only willEnterScene and enterScene are played. To play createScene again you have to remove it (storyboard.removeScene() I guess). Or you can move some stuff you need to willEnterScene. For more detailed info you can watch this: http://www.coronalabs.com/blog/2013/08/20/tutorial-reloading-storyboard-scenes/
Hi how can i remove all objects with the same name, if i use:
local screenGroup = self.view
local randomBad3 = function()
badC3 = display.newImage("BCloud3-"..tostring(math.random(1, 12))..".png")
badC3.x = math.random (0, 450); badC3.y = -50-- -50
physics.addBody( badC3, { density=.3, bounce=0.3, friction=.3, radius=25, filter=badc3CollisionFilter } )
badC3.name = "BCloud3"
badC3.isSensor = true
badC3.rotation = math.random(-30,30) -- Rotate the object
trans5 = transition.to( badC3, { time= math.random(yForB3A, yForB3B), y=600, transition=easing.OutExpo } )
badC3.gravityScale = 0.0
local cleanup
cleanup = function()
if badC3 then
if badC3.y >590 then
badC3:removeSelf()
badC3 = nil
end
end
end
Runtime:addEventListener("enterFrame", cleanup)
end
randomBadC3 = timer.performWithDelay( math.random(1000, 5000), randomBad3, 0 )
--
if badC3 then
badC3:removeSelf()
badC3 = nil
end
it only removes the last spawned one, not all of them
Add all images into one group when you want to delete delete entire group.
for i=1,#maingroup do
if maingroup[i] then
maingroup[i]:removeSelf();maingroup[i]=nil
end
end
end
I have been modifying code from the memory match game to use scenes, sounds, and a 2d table. Adding the scenes has been the hard part. I have it set up to randomly select items from my 2d table. Load those into a temporary table, shuffle them shuffle(), then boardSet(); to load their sounds and place them on the screen. Basically after the game is over I want the scene to reload or go back to the menu to start again. Selecting random data{} elements over and over.
I have tried returning to the menu, or going to a duplicate scene however I can't seem to correctly unload the objects created by my 2d array, as I can't properly add each item into a display group. I have tried everything I can think of. Right now my game loop is setup to add the play again btn that I want to restart the game after one match is found.
This link was a start in the right direction I believe with information about dealing with tables and groups. I still don't know how to cycle thru my 2d table to include everything in a group and then properly unload it.
http://developer.coronalabs.com/content/application-programming-guide-graphics-and-drawing#Variable_References
---------------------------------------------------------------------------------
--
-- level1.lua
--
---------------------------------------------------------------------------------
local storyboard = require( "storyboard" )
local scene = storyboard.newScene()
local widget = require "widget"
---------------------------------------------------------------------------------
-- BEGINNING OF YOUR IMPLEMENTATION
---------------------------------------------------------------------------------
local image, text1, text2, text3, memTimer
-- forward declarations and other locals
local againBtn
-- 'onRelease' event listener for playBtn
local function onPlayBtnRelease()
-- go to level1.lua scene
storyboard.gotoScene( "menu", "fade", 500 )
return true -- indicates successful touch
end
-- Preload the sound file (needed for Android)
--
local playBeep = function( testSound )
media.playEventSound( testSound )
end
---Preload sounds
ki = audio.loadSound("ki-nawaneyoo.mp3")
u = audio.loadSound("u.mp3")
mayuhoo = audio.loadSound("mayuhoo.mp3")
--End Sound Test
--Set Global width and height variables
_W = display.contentWidth;
_H = display.contentHeight;
---Count number of correct matches
local matchCount = 0;
--Hide status bar
display.setStatusBar(display.HiddenStatusBar);
--Declare a totalButtons variable to track number of buttons on screen
local totalButtons = 0
--Declare variable to track button select
local secondSelect = 0
local checkForMatch = false
--Declare Data Table
local data = {}
--Load objects into data
data[1] = {}
data[1].title = "Naka"
data[1].subtitle = "a"
data[1].image = "a.png"
data[1].image1 = "ear.png"
data[1].sound = "naka-ear.caf"
data[1].sound1 = "naka-ear.mp3"
data[2] = {}
data[2].title = "Aapuhu"
data[2].subtitle = "aa"
data[2].image = "aa.png"
data[2].image1 = "eyebrow.png"
data[2].sound = "aapuhu-eyebrow.caf"
data[2].sound1 = "aapuhu-eyebrow.mp3"
data[3] = {}
data[3].title = "Ego"
data[3].subtitle = "Ego"
data[3].image = "e.png"
data[3].image1 = "tongue.png"
data[3].sound = "ego-tongue.caf"
data[3].sound1 = "ego-tongue.mp3"
data[4] = {}
data[4].title = "Kamoo"
data[4].subtitle = "kamoo"
data[4].image = "ee.png"
data[4].image1 = "chin.png"
data[4].sound = "kamoo-chin.caf"
data[4].sound1 = "kamoo-chin.mp3"
data[5] = {}
data[5].title = "Kowpa"
data[5].subtitle = "ego"
data[5].image = "leg.png"
data[5].image1 = "leg.png"
data[5].sound = "kowpa-leg.caf"
data[5].sound1 = "kowpa-leg.mp3"
data[6] = {}
data[6].title = "Mae"
data[6].subtitle = "kwa"
data[6].image = "hand.png"
data[6].image1 = "hand.png"
data[6].sound = "mae-hand.caf"
data[6].sound1 = "mae-hand.mp3"
data[7] = {}
data[7].title = "Nodo"
data[7].subtitle = "kwe"
data[7].image = "kwe.png"
data[7].image1 = "throat.png"
data[7].sound = "nodo-throat.caf"
data[7].sound1 = "nodo-throat.mp3"
data[8] = {}
data[8].title = "Matogo"
data[8].subtitle = "kwe"
data[8].image = "kwe.png"
data[8].image1 = "thumb.png"
data[8].sound = "matogo-thumb.caf"
data[8].sound1 = "matogo-thumb.mp3"
data[9] = {}
data[9].title = "Matzehe"
data[9].subtitle = "kwe"
data[9].image = "kwe.png"
data[9].image1 = "elbow.png"
data[9].sound = "matzehe-eblow.caf"
data[9].sound1 = "matzehe-elbow.mp3"
data[10] = {}
data[10].title = "Kuku"
data[10].subtitle = "kwe"
data[10].image = "kwe.png"
data[10].image1 = "foot.png"
data[10].sound = "kuku-foot.caf"
data[10].sound1 = "kuku-foot.mp3"
--Declare button, buttonCover, and buttonImages table
local tableCopy = {}
local buttonImages = {}
--Shuffle data table
--local shuffleSet = function()
--Shuffle data table
math.randomseed (os.time())
local function shuffle(a)
local n = #a
local t
local k
while(n > 0) do
t = a[n]
k = math.random(n)
a[n] = a[k]
a[k] = t
n = n - 1
end
return a
end
local tableCopy = shuffle(data);
local button = {}
local buttonCover = {}
--Choose six random objects from data to be used in game.
local firstSix = {}
for i = 1,6 do
firstSix[i] = tableCopy[i];
end
local buttonImages = {firstSix[1],firstSix[1],firstSix[2],firstSix[2],firstSix[3],firstSix[3],firstSix[4],firstSix[4],firstSix[5],firstSix[5],firstSix[6],firstSix[6]}
--end
--Declare and prime a last button selected variable
local lastButton;-- = display.newImage("1.png");
--lastButton.myName = 1;
--
--Set up simple off-white background
--Notify player if match is found or not
local matchText = display.newText(" ", 0, 0, native.systemFont, 65)
matchText:setReferencePoint(display.CenterReferencePoint)
matchText:setTextColor(255, 255, 255)
matchText.x = _W/2
--
--Set starting point for button grid
local x = -20
local matchesFound = 0;
--Set up game function
local function game(object, event)
if(event.phase == "began") then
if(checkForMatch == false and secondSelect == 0) then
--Flip over first button
buttonCover[object.number].isVisible = false;
audio.play(object.sound);
lastButton = object
checkForMatch = true
elseif(checkForMatch == true and object.number ~= lastButton.number) then
if(secondSelect == 0) then
--Flip over second button
buttonCover[object.number].isVisible = false;
secondSelect = 1;
--If buttons do not match, flip buttons over
if(lastButton.myName ~= object.myName) then
audio.play(object.sound);
timer.performWithDelay(1000,function()
matchText.text = "Ki Nawa'neyoo";
audio.play(ki); end,1)
timer.performWithDelay(2500, function()
matchText.text = " ";
checkForMatch = false;
secondSelect = 0;
buttonCover[lastButton.number].isVisible = true;
buttonCover[object.number].isVisible = true;
end, 1)
--If buttons DO match, remove buttons
elseif(lastButton.myName == object.myName) then
matchText.text = "U " .. object.myName .. " Mayuhoo";
audio.play(u)
timer.performWithDelay(750,function()
audio.play(object.sound); end, 1)
timer.performWithDelay(1500,function()
audio.play(mayuhoo); end, 1)
timer.performWithDelay(2400, function()
matchText.text = " ";
checkForMatch = false;
secondSelect = 0;
lastButton:removeSelf();
object:removeSelf();
buttonCover[lastButton.number]:removeSelf();
buttonCover[object.number]:removeSelf();
matchesFound = matchesFound + 1;
timer.performWithDelay(250, function()
if (matchesFound == 1) then
matchText.text = " Play Again? ";
againBtn.isVisible = true;
-- all display objects must be inserted into group
--group:insert( playBtn )
end
end, 1)
end, 1)
end
end
end
end
end
--]]
-- Touch event listener for background image
--[[
local function onSceneTouch( self, event )
if event.phase == "began" then
storyboard.gotoScene( "scene2", "slideLeft", 800 )
return true
end
end
--]]
-- Called when the scene's view does not exist:
function scene:createScene( event )
local screenGroup = self.view
local image = display.newImageRect( "bg.png", display.contentWidth, display.contentHeight )
image:setReferencePoint( display.TopLeftReferencePoint )
image.x, image.y = 0, 0
screenGroup:insert( image )
local function boardSet()
for count = 1,3 do
x = x + 100 * 2
y = 20 *2
for insideCount = 1,4 do
y = y + 90 * 2
--Assign each image a random location on grid
local temp = math.random(1,#buttonImages)
button[count] = display.newImageRect(buttonImages[temp].image1, 150, 150);
--Position the button
button[count].x = x;
button[count].y = y;
--Give each a button a name
button[count].myName = buttonImages[temp].title
-- Preload the sound file (needed for Android)
--Give each button a sounds
soundID = audio.loadSound(buttonImages[temp].sound1)
button[count].sound = soundID
button[count].sound1 = soundID
button[count].number = totalButtons
--Remove button from buttonImages table
table.remove(buttonImages, temp)
--Set a cover to hide the button image
buttonCover[totalButtons] = display.newImageRect("button.png", 150, 150);
buttonCover[totalButtons].x = x; buttonCover[totalButtons].y = y;
--screenGroup:insert(button[count].)
totalButtons = totalButtons + 1
--Attach listener event to each button
button[count].touch = game
button[count]:addEventListener( "touch", button[count] )
end
end
end
boardSet();
end
-- Called immediately after scene has moved onscreen:
function scene:enterScene( event )
againBtn = widget.newButton{
label="Play Again?",
fontSize = 25,
labelColor = { default={255}, over={128} },
default="button1.png",
over="button-over.png",
width=250, height=100,
onRelease = onPlayBtnRelease -- event listener function
}
againBtn:setReferencePoint( display.CenterReferencePoint )
againBtn.x = display.contentWidth * 0.5
againBtn.y = display.contentHeight - 125
againBtn.isVisible = false
print( "1: enterScene event" )
-- remove previous scene's view
end
-- Called when scene is about to move offscreen:
function scene:exitScene( event )
print( "1: exitScene event" )
if againBtn then
matchText.text = " "
againBtn:removeSelf() -- widgets must be manually removed
button = nil
buttonCover = nil
firstSix = nil
data = nil
tableCopy = nil
buttonImages = nil
againBtn = nil
end
end
-- Called prior to the removal of scene's "view" (display group)
function scene:destroyScene( event )
local screenGroup = self.view
storyboard.removeScene();
--storyboard.purgeScene( "level1" )
print( "((destroying scene 1's view))" )
end
---------------------------------------------------------------------------------
-- END OF YOUR IMPLEMENTATION
---------------------------------------------------------------------------------
-- "createScene" event is dispatched if scene's view does not exist
scene:addEventListener( "createScene", scene )
-- "enterScene" event is dispatched whenever scene transition has finished
scene:addEventListener( "enterScene", scene )
-- "exitScene" event is dispatched before next scene's transition begins
scene:addEventListener( "exitScene", scene )
-- "destroyScene" event is dispatched before view is unloaded, which can be
-- automatically unloaded in low memory situations, or explicitly via a call to
-- storyboard.purgeScene() or storyboard.removeScene().
scene:addEventListener( "destroyScene", scene )
---------------------------------------------------------------------------------
return scene
Yeah, this is simple.
here is an example(assuming that you have implemented storyboard)
function scene:createScene(event)
screenGroup = self.view
local image = display.newImage("image.png")
screenGroup:insert(image)
end
Now everything will go fine :)
Add all the display objects to a group.local myGroup = display.newGroup();
local img = display.newImage("yourimage.png");
myGroup:insert(img);
For example
If you follow this method, all display objects will not be flushed out of memory when you change the screen.
When using corona storyboard you need to add display objects to the group. For example you would need to add all of your display objects into screenGroup in order for them to be removed when you change scenes.