Stopping Action instead of following into other screens

ElectricDisk · August 13, 2012, 12:07pm

Hello,

I am using this code to (see link below) whenever a level is finished. It works great. What I don’t understand is how to stop the fireworks from being in the next stage. The fireworks are following me into the next screen (rather than stopping once I leave the level). I put a note on the page, but I think this is the right place to ask a question instead.

http://developer.coronalabs.com/code/simple-particle-emitter-and-fireworks-show

Can anyone explain how to stop all these functions? Or how to discover which ones need to be stopped explicitly? Right now, I am just guessing.

[import]uid: 132937 topic_id: 29809 reply_id: 329809[/import]

ElectricDisk · August 13, 2012, 6:15pm

I see a StartShow(), but not a StopShow()

[code]
local lib_emitter = require(“lib_emitter”)

local Random = math.random

local screenW = display.contentWidth
local screenH = display.contentHeight
local screenHW = screenW *.5
local screenHH = screenH *.5

–Base emitter props
local radiusRange = 100

local duration = 1200 --800
local startAlpha = 1
local endAlpha = 0
local pImage = nil
local pImageWidth = nil
local pImageHeight = nil
local emitterDensity = 40

–Mortar props
local mortarSpeed = 200
local mortarEmitterDensity = 40
local mortarRadiusRange = 100
local mortarThickness = 4
local mortarEmitter = emitterLib:createEmitter(radiusRange, mortarThickness, duration, startAlpha, endAlpha, pImage, pImageWidth, pImageHeight)

–Sprayer props
local sprayerSpeed = 200
local sprayerEmitterDensity = 40
local sprayerRadiusRange = 70
local sprayerThickness = 3
local sprayerEmitter = emitterLib:createEmitter(sprayerRadiusRange, sprayerThickness, duration, startAlpha, endAlpha, pImage, pImageWidth, pImageHeight)
–This will be a random color emitter
sprayerEmitter:setColor(-1)

–Keep it tidy
local levelGroup = display.newGroup()

local function SprayStyleEmitter(px, py)
timer.performWithDelay(10, function()
sprayerEmitter:emit(levelGroup, px, py)
end, sprayerEmitterDensity)
end

local function ExplodeStyleEmitter(px, py)
mortarEmitter:setColor(Random(20,255),Random(20,255),Random(20,255))

for i=1,mortarEmitterDensity do
mortarEmitter:emit(levelGroup, px, py)
end
end

local function ShootFirework()
local mortar = display.newRect(levelGroup, screenHW, screenH, 4, 8)
local px = Random(30, screenW-30)
local py = Random(30, screenH-180)

local function mortarExplode(Obj)
display.remove(Obj)
Obj = nil

–How about a little poof to boot
local pop = display.newCircle(levelGroup, px, py, Random(10,20))
local function DestroyPop(Obj)
display.remove(Obj)
Obj = nil
end
transition.to(pop, {time=100, alpha = 0, onComplete=DestroyPop})
–end of extra poof code

ExplodeStyleEmitter(px, py)
end

transition.to(mortar, {time=2000, x=px, y=py, onComplete=mortarExplode})
end

local function StartSprayer()
local px = Random(30, screenW-30)
local py = Random(screenH-60, screenH-30)

SprayStyleEmitter(px, py)
end

local function StartShow()
–Start mortar volley
timer.performWithDelay(mortarSpeed, function()
ShootFirework()
end, 0)

–Start srayers
timer.performWithDelay(sprayerSpeed, function()
StartSprayer()
end, 0)

local title = display.newText(“Corona SDK”, 0, 0, native.systemFont, 74)
title:setTextColor(225, 160, 12)
title:setReferencePoint(display.CenterReferencePoint)
title.x = screenHW
title.y = 200
title.alpha = 0
timer.performWithDelay(4000, function() transition.to(title, {time=4000, alpha=1}) end)
end

StartShow()
[/code] [import]uid: 132937 topic_id: 29809 reply_id: 119556[/import]

ElectricDisk · August 13, 2012, 6:15pm