Spawning Object Using Function (Help Me)

Games
#1 
--------------------------------------------------------------------------- local obj1 = display.newImageRect("sprites/obj.png", 10, 45); obj1.x = 10 --math.random(0, 300); obj1.y = -100 --40; physics.addBody( obj1, "dynamic", { density=0.1, bounce=0.1, friction=0.1, radius=0 } ); local function spawnObj1() for i=1,numberObj1 do transition.to( obj1, { time=math.random(4000,6000), x=obj1.x , y=500 } ); --, onComplete=clearObj1 } ); end end spawnTimer1 = timer.performWithDelay( spawnTime, spawnObj1, 0 ) --------------------------------------------------------------------------- local function spawnObj2() for i=1,numberObj1 do local obj1 = display.newImageRect("sprites/obj.png", 10, 45); obj1.x = 75 --math.random(0, 300); obj1.y = -100 --40; transition.to( obj1, { time=math.random(4000,6000), x=obj1.x , y=500, onComplete=clearObj1 } ); physics.addBody( obj1, "dynamic", { density=0.1, bounce=0.1, friction=0.1, radius=0 } ); end end spawnTimer2 = timer.performWithDelay( spawnTime, spawnObj2, 0 )

spawnObj2 works the way I want it to but I can’t get the objects to remove when I switch scenes. What I tried doing to spawnObj1 was to make the code so that I would be able to add the code group:insert(obj1) I am a noob someone please help me. Here is my menu button (scene switcher) 

function pause(event) if(event.phase == "ended") then composer.removeScene( "scenes.game", true ) composer.gotoScene( "scenes.menu", "fade", 150) timer.cancel (spawnTimer1) timer.cancel (spawnTimer2) end end

Here is the whole code. Works fine but objects that are left falling are still there when I switch scenes.

local composer = require('composer') local scene = composer.newScene() local physics = require("physics") physics.start() --physics.setGravity(0, 10) --Variables local numberObj1 = 1 local spawnTime = 3000 -- Temp Menu Button local widget = require "widget" -- create function scene:create(event) local group = self.view local background = display.newImageRect("sprites/background.png", display.actualContentWidth, display.actualContentHeight) background.x = display.contentCenterX background.y = display.contentCenterY \_W = display.contentWidth \_H = display.contentHeight local pause = widget.newButton({ width = 40, height = 40, defaultFile = "sprites/pause\_normal.png", overFile = "sprites/pause\_hover.png", onRelease = pause }) pause.x = display.contentCenterX - 110 pause.y = display.contentCenterY - 200 --[[local obj1 = display.newImageRect("sprites/obj.png", 10, 45); obj1.x = 10 --math.random(0, 300); obj1.y = 0 --40; physics.addBody( obj1, "dynamic", { density=0.1, bounce=0.1, friction=0.1, radius=0 } ); local function spawnObj1() for i=1,numberObj1 do transition.to( obj1, { time=math.random(4000,6000), x=obj1.x , y=500 } ); --, onComplete=clearObj1 } ); end end --]] local function spawnObj2() for i=1,numberObj1 do local obj1 = display.newImageRect("sprites/obj.png", 10, 45); obj1.x = 75 --math.random(0, 300); obj1.y = 0 --40; transition.to( obj1, { time=math.random(4000,6000), x=obj1.x , y=500, onComplete=clearObj1 } ); physics.addBody( obj1, "dynamic", { density=0.1, bounce=0.1, friction=0.1, radius=0 } ); end end --Spawner --spawnTimer1 = timer.performWithDelay( spawnTime, spawnObj1, 0 ) spawnTimer2 = timer.performWithDelay( spawnTime, spawnObj2, 0 ) local function clearObj1( thisObj1 ) display.remove( thisObj1 ) ; thisObj1 = nil end --group:insert(obj1) group:insert(background) group:insert(pause) end --Pause function pause(event) if(event.phase == "ended") then composer.removeScene( "scenes.game", true ) composer.gotoScene( "scenes.menu", "fade", 150) timer.cancel (spawnTimer1) timer.cancel (spawnTimer2) end end -- Touch listener local function onTouchEvent(event) if event.phase == "began" then pause() end end -- show function scene:show(event) local group = self.view local phase = event.phase if (phase == 'will') then elseif (phase == 'did') then end end -- hide function scene:hide(event) local group = self.view if pause then composer.removeScene("current") end end -- destroy function scene:destroy( event ) local group = self.view local phase = event.phase if phase == "will" then elseif phase == "did" then end end scene:addEventListener('create', scene) scene:addEventListener('show', scene) scene:addEventListener('hide', scene) scene:addEventListener('destroy', scene) return scene
#2

Hi sean.sath,

You need (in most cases) add ALL display objects to scene group or one of it child group. There two way you can do this :

  1. Provide group parameter when you create object e.g.

    local obj1 = display.newImageRect(group, “sprites/obj.png”, 10, 45)

  2. Insert object to group e.g.

    group:insert(obj1)

Use scene.view to add objects to scene group e.g. 

local obj1 = display.newImageRect(scene.view, "sprites/obj.png", 10, 45)

This should solve your problem.

From Corona documentation :

Remember that you must insert scene display objects into the scene’s self.view group. If you create display objects but do not insert them into this group, they will reside in front of the Composer stage and they will not be regarded as part of the scene. For display objects which should be part of the scene and “managed” by Composer — for example, cleaned up when the scene is removed — you must insert them into the scene’s self.view

Read more :

Have a ncie day:)

ldurniat

#3

Thank you 

#4

Hi sean.sath,

You need (in most cases) add ALL display objects to scene group or one of it child group. There two way you can do this :

  1. Provide group parameter when you create object e.g.

    local obj1 = display.newImageRect(group, “sprites/obj.png”, 10, 45)

  2. Insert object to group e.g.

    group:insert(obj1)

Use scene.view to add objects to scene group e.g. 

local obj1 = display.newImageRect(scene.view, "sprites/obj.png", 10, 45)

This should solve your problem.

From Corona documentation :

Remember that you must insert scene display objects into the scene’s self.view group. If you create display objects but do not insert them into this group, they will reside in front of the Composer stage and they will not be regarded as part of the scene. For display objects which should be part of the scene and “managed” by Composer — for example, cleaned up when the scene is removed — you must insert them into the scene’s self.view

Read more :

Have a ncie day:)

ldurniat

#5

Thank you