Hey guys, I’ve been working with corona for a few weeks now, and really starting to feel like I’m getting somewhere, but I’m also full of doubt, and would like some direction if I could be so bold 
I’d like to post my code here, and have those in the know, tell me how I’m doin’…
I really feel like I don’t fully grasp the whole global, local stuff, and I know my app is leaking memory between scenes, I’m totally not sure why, I’ve made sure to remove evcerything and tried to keep things local, but since I barely grasp what that means, it’s likely Im makin’ mistakes
Anyway here we go
- main.lua
display.setStatusBar( display.HiddenStatusBar )
local storyboard = require "storyboard"
storyboard.gotoScene( "scripts.menu" )
local analytics = require "analytics"
analytics.init( "editedjustbecause" )
local monitorMem = function()
collectgarbage()
print( "MemUsage: " .. collectgarbage("count") )
local textMem = system.getInfo( "textureMemoryUsed" ) / 1000000
print( "TexMem: " .. textMem )
end
timer.performWithDelay(6000, monitorMem, -1)
local mask = display.newImageRect ("img/mask.png",630,420)
mask.x,mask.y = 240,160 menu.lua
local storyboard = require "storyboard"
local scene = storyboard.newScene()
local sprite = require "sprite"
local physics = require "physics"
local widget = require "widget"
local score = require( "scripts.score" )
physics.start();
physics.pause()
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
function scene:createScene(event)
print("Menu Created")
local group = self.view
local splashGroup = display.newGroup()
local logoBar = display.newGroup()
local splashLogo = display.newImageRect("img/splash.png", 480, 320 )
splashLogo.x, splashLogo.y = 240, 160
local navigationSheetoptions =
{
frames = {
{x = 0, y = 0,width = 114,height = 40},
{x = 0, y = 41,width = 114,height = 40},
{x = 114, y = 0,width = 155,height = 40},
{x = 114, y = 41,width = 155,height = 40},
{x = 270, y = 0,width = 113,height = 40},
{x = 270, y = 41,width = 113,height = 40},
},
-- optional params; used for dynamic resolution support
sheetContentWidth = 383,
sheetContentHeight = 82
}
local navigationSheet = graphics.newImageSheet( "img/navsprite.png", navigationSheetoptions )
local socialSpriteSheetOptions =
{
frames = {
{x = 0, y = 0,width = 43,height = 42},
{x = 0, y = 43,width = 43,height = 42},
},
-- optional params; used for dynamic resolution support
sheetContentWidth = 43,
sheetContentHeight = 84
}
local socialspriteSheet = graphics.newImageSheet( "img/socialsprite.png", socialSpriteSheetOptions )
local fbLogo = display.newImage( socialspriteSheet, 1 )
fbLogo.x, fbLogo.y = 415, 30
local twitterLogo = display.newImage( socialspriteSheet, 2 )
twitterLogo.x, twitterLogo.y = 450, 30
local playButtonEvent = function (event )
print('play button pressed')
storyboard.gotoScene( "scripts.level1" )
end
local optionsButtonEvent = function (event )
print('options button pressed')
--transition.to( splashGroup, { time=400,x=(0), y=(290),easing = inOutQuad} )
transition.to( logoBar, { time=400,x=(0), y=(-55),easing = inOutQuad} )
end
local statsButtonEvent = function (event )
print('stats button pressed')
--storyboard.gotoScene( "scripts.level1" )
end
local playButton = widget.newButton{
sheet = navigationSheet,
defaultIndex = 1,
overIndex = 2,
left = 30,
top = 260,
width = 112, height =40,
onRelease = playButtonEvent
}
local optionsButton = widget.newButton{
sheet = navigationSheet,
defaultIndex = 3,
overIndex = 4,
left = 157,
top = 260,
width = 155, height =40,
onRelease = optionsButtonEvent
}
local statsButton = widget.newButton{
sheet = navigationSheet,
defaultIndex = 5,
overIndex = 6,
left = 330,
top = 260,
width = 113, height =40,
onRelease = statsButtonEvent
}
local Background = display.newImageRect("img/bgmenu.png", 480, 320 )
Background.x, Background.y = 240, 160
local topBg = display.newImageRect("img/topbg.png", 480, 45 )
topBg.x, topBg.y = 240, 23
logoBar:insert(topBg)
logoBar:insert(fbLogo)
logoBar:insert(twitterLogo)
group:insert(logoBar)
group:insert(splashGroup)
splashGroup:insert(Background)
splashGroup:insert(splashLogo)
splashGroup:insert(playButton)
splashGroup:insert(optionsButton)
splashGroup:insert(statsButton)
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
end
function scene:enterScene( event )
storyboard.removeScene('scripts.level1')
storyboard.purgeScene('scripts.level1')
local group = self.view
score.fadeScoreOut()
physics.start()
print("Menu Entered")
print()
end
function scene:exitScene( event )
local group = self.view
display.remove(topBg)
display.remove(fbLogo)
display.remove(twitterLogo)
display.remove(logoBar)
display.remove(splashGroup)
display.remove( Background)
display.remove( splashLogo)
display.remove( playButton)
display.remove( optionsButton)
display.remove( statsButton)
topBg = nil
fbLogo = nil
twitterLogo = nil
logoBar = nil
splashGroup = nil
Background = nil
splashLogo = nil
playButton = nil
optionsButton = nil
statsButton = nil
navigationSheet = nil
socialspriteSheet = nil
physics.stop()
end
function scene:destroyScene( event )
local group = self.view
print("Menu Destroyed")
end
scene:addEventListener( "createScene", scene )
scene:addEventListener( "enterScene", scene )
scene:addEventListener( "exitScene", scene )
scene:addEventListener( "destroyScene", scene )
return scene level1.lua
local storyboard = require "storyboard"
local scene = storyboard.newScene()
local score = require( "scripts.score" )
local sprite = require("sprite")
local physics = require "physics"
local widget = require "widget"
system.activate( "multitouch" )
physics.start();
physics.pause()
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
function scene:createScene( event )
print("Level 1 Created")
local group = self.view
local backgroundImages = display.newGroup()
local level = display.newGroup()
local controls = display.newGroup()
local runningSpeed = 7
local closeBackgroundSpeed = runningSpeed\*.25
local farBackgroundSpeed = closeBackgroundSpeed\*.5
local goingRight = false
physics.setGravity( 0, 60 )
local options =
{
frames = {
-- further background image 1
{x = 0, y = 0,width = 486,height = 223},
-- cloud background images 2
{x = 0,y = 223,width = 458,height = 200},
-- grass platform 3
{x = 56, y = 495, width = 740, height = 88 },
-- front background images 4
{ x = 462, y = 232, width = 486, height = 268 },
-- Sun Image 5
{x = 0,y = 582,width = 154,height = 154},
-- Spiral Image 6
{x = 154,y = 584,width = 441,height = 441},
-- goRightButton7
{x = 405,y = 410,width = 55,height = 58},
-- goRightButtonHover 8
{x = 0,y = 410,width = 55,height = 58},
-- goLeftButton 9
{x = 172,y = 410,width = 56,height = 58},
-- goLeftButton 10
{x = 230,y = 410,width = 56,height = 58},
-- Jump 11
{x = 57,y = 410,width = 56,height = 58},
-- JumpHover 12
{x = 115,y = 410,width = 56,height = 58},
},
sheetContentWidth = 1024,
sheetContentHeight = 1024
}
local NinjaSheetoptions =
{
width = 96,
height = 96,
numFrames = 27,
sheetContentWidth = 864,
sheetContentHeight = 288
}
local NinjaSheet = graphics.newImageSheet( "img/walkcyclehuge.png", NinjaSheetoptions )
local ninjaSheetData = {
{ name="standRight", start=1, count=1 },
{ name="walkRight", start=2, count=12, time=600 },
{ name="standLeft", start=26, count=1},
{ name="jumpRight", start=27, count=1},
{ name="walkLeft", start=14, count=12, time=600 },
}
local ninja = display.newSprite( NinjaSheet, ninjaSheetData )
local ninjaShape = { 0,-50, 35,-50, 22,25, -22,25, -33,-38 }
physics.addBody( ninja, { density=10.0, friction=0, bounce=0.0, shape=ninjaShape } )
ninja.isFixedRotation = true
ninja.x, ninja.y = 150, 50
local imageSheet = graphics.newImageSheet( "img/bigsprite.png", options )
--physics.setDrawMode( "hybrid" )
------------------------------------------------------------------------------------------------------------------------------------------------------------------
local function standRight()
ninja:setSequence("standRight")
ninja:play()
goingRight = false
goingLeft = false
print("standing right")
end
local function walkRight()
local ninja = ninja
ninja:setSequence("walkRight")
ninja:play()
goingRight = true
goingLeft = false
print("running right")
end
local function standLeft()
ninja:setSequence("standLeft")
ninja:play()
goingRight = false
goingLeft = false
print("standing Left")
end
local function walkLeft()
ninja:setSequence("walkLeft")
ninja:play()
goingRight = false
goingLeft = true
print("running Left")
end
local function ninjaJump(event)
if (ninja.grounded == true) then
ninja.grounded = false
ninja:applyLinearImpulse(0, -1100, ninja.x, ninja.y)
print("grounded is false")
end
end
local function PauseGame(event)
storyboard.gotoScene( "scripts.menu" )
end
local goRightButton = display.newImage( imageSheet, 7 )
goRightButton.x, goRightButton.y = 110,300
local goLeftButton = display.newImage( imageSheet, 9 )
goLeftButton.x,goLeftButton.y = 40,300
local jumpButton = display.newImage( imageSheet, 11 )
jumpButton.x,jumpButton.y = 440,300
local pauseButton = display.newImage( imageSheet, 11 )
pauseButton.x,pauseButton.y = 240,10
local Background = display.newImageRect("img/backgroundlevel1.png", 680, 320 )
Background.x, Background.y = 240, 100
local cloudbg = display.newImage( imageSheet, 2 )
cloudbg.x, cloudbg.y = 240, 100
local cloudbg2 = display.newImage( imageSheet, 2 )
cloudbg2.x, cloudbg2.y = 720, 100
local nearBackground = display.newImage( imageSheet, 4 )
nearBackground.x, nearBackground.y = 240, 220
local nearBackground2 = display.newImage( imageSheet, 4 )
nearBackground2.x, nearBackground2.y = 720, 220
local farBackground = display.newImage( imageSheet, 1 )
farBackground.x, farBackground.y = 240, 200
local farBackground2 = display.newImage( imageSheet, 1 )
farBackground2.x, farBackground2.y = 720, 200
local spiral = display.newImage( imageSheet, 6 )
spiral.x, spiral.y = 40, 60
local sun = display.newImage( imageSheet, 5 )
sun.x, sun.y = 40, 60
local platform = display.newImage( imageSheet, 3 )
platform.x, platform.y = 250, 290
physics.addBody( platform, "static",{density=10.0, bounce=0.0})
local platform2 = display.newImage( imageSheet, 3 )
platform2.x, platform2.y = 1250, 290
physics.addBody( platform2, "static",{density=10.0, bounce=0.0})
local platform3 = display.newImage( imageSheet, 3 )
platform3.x, platform3.y = 2150, 270
physics.addBody( platform3, "static",{density=10.0, bounce=0.0})
local platform4 = display.newImage( imageSheet, 3 )
platform4.x, platform4.y =3150, 270
physics.addBody( platform4, "static",{density=10.0, bounce=0.0})
local platform5 = display.newImage( imageSheet, 3 )
platform5.x, platform5.y =4150, 220
physics.addBody( platform5, "static",{density=10.0, bounce=0.0})
local platform6 = display.newImage( imageSheet, 3 )
platform6.x, platform6.y =5050, 170
physics.addBody( platform6, "static",{density=10.0, bounce=0.0})
local platform7 = display.newImage( imageSheet, 3 )
platform7.x, platform7.y =6050, 170
physics.addBody( platform7, "static",{density=10.0, bounce=0.0})
local platform8 = display.newImage( imageSheet, 3 )
platform8.x, platform8.y =7050, 240
physics.addBody( platform8, "static",{density=10.0, bounce=0.0})
local platform9 = display.newImage( imageSheet, 3 )
platform9.x, platform9.y =8050, 270
physics.addBody( platform9, "static",{density=10.0, bounce=0.0})
------THE NINJA STUFF ---------------------------------------------------------------------------------------------------
group:insert(backgroundImages)
group:insert(level)
group:insert(controls)
backgroundImages:insert(Background)
backgroundImages:insert(spiral)
backgroundImages:insert(sun)
backgroundImages:insert(cloudbg2)
backgroundImages:insert(cloudbg)
backgroundImages:insert(farBackground)
backgroundImages:insert(farBackground2)
backgroundImages:insert(nearBackground)
backgroundImages:insert(nearBackground2)
level:insert(platform)
level:insert(platform2)
level:insert(platform3)
level:insert(platform4)
level:insert(platform5)
level:insert(platform6)
level:insert(platform7)
level:insert(platform8)
level:insert(platform9)
level:insert(ninja)
controls:insert(goRightButton)
controls:insert(goLeftButton)
controls:insert(pauseButton)
controls:insert(jumpButton)
local function landOnPlatform( event )
ninja.grounded = true
print("grounded is true")
end
local function resetScene( self, event )
if event.phase == "began" then
elseif event.phase == "moved" then
elseif event.phase == "ended" or event.phase == "cancelled" then
PauseGame()
end
end
pauseButton.touch = resetScene
local function goLeftTouched( self, event )
if event.phase == "began" then
walkLeft()
elseif event.phase == "moved" then
elseif event.phase == "ended" or event.phase == "cancelled" then
standLeft()
end
return true -- IMPORTANT
end
goLeftButton.touch = goLeftTouched
local function goRightTouched( self, event )
if event.phase == "began" then
walkRight()
elseif event.phase == "moved" then
elseif event.phase == "ended" or event.phase == "cancelled" then
standRight()
end
return true -- IMPORTANT
end
goRightButton.touch = goRightTouched
local function jumpTouched()
ninjaJump()
return true -- IMPORTANT
end
jumpButton.tap = jumpTouched
local function updateGameplay()
cloudbg.x = cloudbg.x - (.4)
cloudbg2.x = cloudbg2.x - (.4)
spiral.rotation = spiral.rotation - (.25)
if goingRight == true then
nearBackground.x = nearBackground.x - (2)
nearBackground2.x = nearBackground2.x - (2)
farBackground.x = farBackground.x - (1)
farBackground2.x = farBackground2.x - (1)
level.x = level.x - (runningSpeed)
ninja.x = ninja.x + (runningSpeed)
end
if goingLeft == true then
nearBackground.x = nearBackground.x + (2)
nearBackground2.x = nearBackground2.x + (2)
farBackground.x = farBackground.x + (1)
farBackground2.x = farBackground2.x + (1)
level.x = level.x + (runningSpeed)
ninja.x = ninja.x - (runningSpeed)
end
end
local function CheckBackgrounds()
score.setScore (score.getScore()+12)
if(nearBackground.x \< -241) then
nearBackground.x = 720
end
if(nearBackground2.x \< -240) then
nearBackground2.x = 720
end
if(farBackground.x \< -240) then
farBackground.x = 720
end
if(farBackground2.x \< -240) then
farBackground2.x = 720
end
if(nearBackground.x \> 720) then
nearBackground.x = -240
end
if(nearBackground2.x \> 720) then
nearBackground2.x = -240
end
if(farBackground.x \> 720) then
farBackground.x = -240
end
if(farBackground2.x \> 720) then
farBackground2.x = -240
end
if(cloudbg.x \< -240) then
cloudbg.x = 720
end
if(cloudbg2.x \< -240) then
cloudbg2.x = 720
end
end
scene.game = timer.performWithDelay(1, updateGameplay, -1)
scene.backgrounds = timer.performWithDelay(50, CheckBackgrounds, -1)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
scene.colisionDetector = Runtime:addEventListener( "collision", landOnPlatform )
goRightButton:addEventListener( "touch", goRightButton )
pauseButton:addEventListener( "touch", pauseButton )
jumpButton:addEventListener( "tap", jumpButton )
goLeftButton:addEventListener( "touch", goLeftButton )
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
end
function scene:enterScene( event )
print("Level 1 Entered")
local group = self.view
physics.start()
storyboard.removeScene('scripts.menu')
storyboard.purgeScene('scripts.menu')
score.fadeScoreIn()
end
function scene:exitScene( event )
local group = self.view
physics.stop()
score.setScore (0)
timer.cancel(scene.backgrounds)
timer.cancel(scene.game)
Runtime:removeEventListener( "collision", landOnPlatform )
display.remove(backgroundImages)
display.remove(level)
display.remove(controls)
display.remove(Background)
display.remove(spiral)
display.remove(sun)
display.remove(cloudbg2)
display.remove(cloudbg)
display.remove(farBackground)
display.remove(farBackground2)
display.remove(nearBackground)
display.remove(nearBackground2)
display.remove(platform)
display.remove(platform2)
display.remove(platform3)
display.remove(platform4)
display.remove(platform5)
display.remove(platform6)
display.remove(platform7)
display.remove(platform8)
display.remove(platform9)
display.remove(ninja)
display.remove(goRightButton)
display.remove(goLeftButton)
display.remove(pauseButton)
display.remove(jumpButton)
scene.backgrounds = nil
scene.game = nil
goingRight = nil
goingLeft = nil
standingLeft = nil
standingRight = nil
runningSpeed = nil
NinjaSheet = nil
imageSheet = nil
ninjaShape = nil
platform= nil
platform2= nil
platform3= nil
platform4= nil
platform5= nil
platform6= nil
platform7= nil
platform8= nil
platform9= nil
goRightButton= nil
goLeftButton= nil
pauseButton= nil
jumpButton= nil
print(runningSpeed)
end
function scene:destroyScene( event )
local group = self.view
package.loaded[physics] = nil
physics = nil
print("Level 1 Destroyed")
end
scene:addEventListener( "createScene", scene )
scene:addEventListener( "enterScene", scene )
scene:addEventListener( "exitScene", scene )
scene:addEventListener( "destroyScene", scene )
return scene score.lua - changed up some from peach pellin’s tutorial
local M = {}
local numbers = {
[string.byte("0")] = "img/0.png",
[string.byte("1")] = "img/1.png",
[string.byte("2")] = "img/2.png",
[string.byte("3")] = "img/3.png",
[string.byte("4")] = "img/4.png",
[string.byte("5")] = "img/5.png",
[string.byte("6")] = "img/6.png",
[string.byte("7")] = "img/7.png",
[string.byte("8")] = "img/8.png",
[string.byte("9")] = "img/9.png",
}
local theBackground = display.newImage( "img/scorebg.png" )
local theScoreGroup = display.newGroup()
local numbersGroup = display.newGroup()
theScoreGroup:insert( theBackground )
theScoreGroup:insert( numbersGroup )
local theScore = 0
local function fadeScoreOut()
theScoreGroup.alpha = 0
print('Score Hidden')
end
M.fadeScoreOut = fadeScoreOut
local function fadeScoreIn()
transition.to( theScoreGroup, { delay=0, time=1600, alpha=(1),transition = easing.outQuad} )
print('Score Shown')
end
M.fadeScoreIn = fadeScoreIn
local function updateScore()
theScoreGroup:remove(2)
local numbersGroup = display.newGroup()
theScoreGroup:insert( numbersGroup )
local scoreStr = tostring( theScore )
local scoreLen = string.len( scoreStr )
local i = scoreLen
local x = 442
local y = 25
while i \> 0 do
local c = string.byte( scoreStr, i )
local digitPath = numbers[c]
local numberImage = display.newImage( digitPath )
numbersGroup:insert( numberImage )
numberImage.x = x
numberImage.y = y
numberImage.width = 26
numberImage.height = 28
x = x - 18
i = i - 1
end
end
M.updateScore = updateScore
local function getScore()
return theScore
end
M.getScore = getScore
local function setScore( score )
theScore = score
updateScore()
end
M.setScore = setScore
return M also, re: score.lua, if I remove
local theBackground = display.newImage( “img/scorebg.png” )
and all other references to the theBackground, my app crashes the viewer completely, and I have no idea why it’s depending on that being in there, 
Thanks in advance guys, I’m learning and appreciate these forums a bunch 
[import]uid: 157863 topic_id: 30590 reply_id: 330590[/import]