how to collide objects in corona labs - lua

Question

I'm trying to make a game in Corona SDK where a player runs and survives through obstacles by either jumping over them or killing them using bullets. The problem is that the game ends even if the player fires the bullet. But it should be over only if the player collides with the obstacles.
This is my code till now!!
--local screen_adjustment = 1
local physics = require "physics"
physics.start()
local storyboard = require ("storyboard")
local scene = storyboard.newScene()
function scene:createScene( event )
local screenGroup=self.view
background=display.newImage("rsz_islands1-background-animation.png")
background:setReferencePoint(display.BottomLeftReferencePoint)
background.x=-50
background.y=330
background.speed=math.random(2,6)
screenGroup:insert(background)
background1=display.newImage("rsz_islands1-background-animation.png")
background1:setReferencePoint(display.BottomLeftReferencePoint)
background1.x=500
background1.y=330
background1.speed=math.random(2,6)
screenGroup:insert(background1)
rightArrow=display.newImageRect("right_arrow.png",50,100)
rightArrow:setReferencePoint(display.BottomLeftReferencePoint)
rightArrow.x=370
rightArrow.y=290
screenGroup:insert(rightArrow)
upArrow=display.newImageRect("up_Arrow.png",100,50)
upArrow:setReferencePoint(display.BottomLeftReferencePoint)
upArrow.x=250
upArrow.y=240
screenGroup:insert(upArrow)
stone=display.newImageRect("stone.png",100,50)
stone:setReferencePoint(display.BottomLeftReferencePoint)
stone.x=math.random(500,1500)
stone.y=280
stone.speed=math.random(2,6)
physics.addBody(stone,"static",{bounce=0,friction=0,})
screenGroup:insert(stone)
base = display.newRect(0,0,450,3)
base.x=-50
base.y=282
base:setReferencePoint(display.BottomLeftReferencePoint)
base:setFillColor(255,255,255)
--physics.addBody(base,"static",{bounce=0.1,friction=0.1})
physics.addBody(base,"static",{bounce=0,friction=1.0,density=1.0})
screenGroup:insert(base)
base.myName="base1"
local sheetData = {
width=65,
height=75,
numFrames=4,
sheetContentWidth=130,
sheetContentHeight=150
}
local mySprite = graphics.newImageSheet("imageSheet.png",sheetData)
local sequenceData = {
name="normalRun",
frames={1,2,3,4},
time=500,
loopcount=0
}
animation = display.newSprite(mySprite,sequenceData)
if(animation.x<50) then
animation.x=50
end
animation.y=245
physics.addBody(animation,{bounce=0.3,friction=1.0,density=1.0,radius=35})
animation:play()
screenGroup:insert(animation)
animation.myName="animation1"
local sheetTigerData = {
width=100,
height=57,
numFrames=8,
sheetContentWidth=400,
sheetContentHeight=120
}
local myTigerSprite
graphics.newImageSheet("tigerImageSheet.png",sheetTigerData)
local sequenceTigerData = {
name="normalRun",
frames={1,2,3,4,5,6,7,8},
time=500,
loopcount=0
}
tigeranimation = display.newSprite(myTigerSprite,sequenceTigerData)
--tigeranimation.x=700
tigeranimation.x=math.random(500,1500)
tigeranimation.y=255
tigeranimation.speed=math.random(2,6)
physics.addBody(tigeranimation,"static",{bounce=0,friction=.2})
tigeranimation:play()
screenGroup:insert(tigeranimation)
local sheetBirdData = {
width=60,
height=40,
numFrames=6,
sheetContentWidth=180,
sheetContentHeight=80
}
local myBirdSprite =
graphics.newImageSheet("birdimagesheet.png",sheetBirdData)
local sequenceBirdData = {
name="normalRun",
frames={1,2,3,4,5,6},
time=500,
loopcount=0
}
birdanimation = display.newSprite(myBirdSprite,sequenceBirdData)
birdanimation.x=math.random(500,2500)
birdanimation.y=math.random(100,200)
birdanimation.speed=2
birdanimation.initY=birdanimation.y
birdanimation.amp=50
birdanimation.angle=math.random(1,360)
physics.addBody(birdanimation,"static",{friction=.2,bounce=0})
birdanimation:play()
screenGroup:insert(birdanimation)
local sheetCatData = {
width=100,
height=48,
numFrames=8,
sheetContentWidth=200,
sheetContentHeight=200
}
local myCatSprite =
graphics.newImageSheet("rsz_runningcat.png",sheetCatData)
local sequenceCatData = {
name="normalRun",
frames={2,1,4,3,6,5,8,7},
time=500,
loopcount=0
}
catanimation = display.newSprite(myCatSprite,sequenceCatData)
catanimation.x=tigeranimation.x+math.random(110,1500)
catanimation.y=255
catanimation.speed=math.random(2,6)
physics.addBody(catanimation,"static",{bounce=0,friction=.2})
catanimation:play()
screenGroup:insert(catanimation)
gameSound=audio.loadStream("gamesound.mp3")
audio.play(gameSound)
gunshot=audio.loadStream("gunshot3.mp3")
end
function scrollBack( self,event )
if self.x<-590 then
self.x=500
audio.play(gameSound)
else
self.x=self.x-3
audio.play(gameSound)
end
end
function moveTiger( self,event )
if self.x<-100 then
self.x=math.random(1500,4000)
self.y=255
self.speed=math.random(3,6)
audio.play(gameSound)
else
self.x=self.x-self.speed
audio.play(gameSound)
end
end
function moveCat( self,event )
if self.x<-100 then
self.x=tigeranimation.x+math.random(800,2000)
self.y=255
self.speed=math.random(3,6)
else
self.x=self.x-self.speed
end
end
function moveStone( self,event )
if self.x<-100 then
self.x=math.random(1000,5000)
self.y=280
self.speed=math.random(3,6)
else
self.x=self.x-self.speed
end
end
function moveBird( self,event )
if self.x<-100 then
self.x=math.random(500,2500)
--self.x=300
self.y=math.random(100,200)
self.speed=2
self.amp=math.random(25,75)
self.angle=math.random(1,360)
--self.y=280
--self.speed=math.random(3,6)
else
self.x=self.x-self.speed
self.angle=self.angle+.1
self.y=self.amp*math.sin(self.angle)+self.initY
end
end
function fireLasers()
blaster = display.newImageRect( "bullet.png", 40, 15 )
physics.addBody(blaster,"dynamic")
blaster.x = animation.x+50
blaster.y = animation.y-10
--blaster.collided=false
if(animation.x<50) then
animation.x=50
end
transition.to( blaster, { time=1000, x=500} )
audio.play(gunshot)
end
function handleFireButton( event )
if ( event.phase == "began" ) then
-- Fire the weapon
fireLasers()
elseif ( event.phase == "ended" ) then
-- Stop firing the weapon
fireLasers()
end
return true
end
positionInAir = false
function jump(event)
if(event.phase == "began" and positionInAir==false) then
--playerInAir = true
--animation:setLinearVelocity( 0, 1 )
animation:applyForce(0,-1000,animation.x,animation.y)
positionInAir=true
--physics.addBody(animation,"dynamic")
--print("touch")
end
return true
end
function onCollision( event )
if(event.object1.myName == "base1" and event.object2.myName == "animation1")
then
positionInAir = false;
-- base:removeSelf()
end
end
local function onManCollide(event)
if ( event.phase == "began" ) then
storyboard.gotoScene("restart","fade",400)
audio.stop()
end
end
function scene:enterScene( event )
background.enterFrame=scrollBack
Runtime:addEventListener("enterFrame",background)
background1.enterFrame=scrollBack
Runtime:addEventListener("enterFrame",background1)
stone.enterFrame=moveStone
Runtime:addEventListener("enterFrame",stone)
tigeranimation.enterFrame=moveTiger
Runtime:addEventListener("enterFrame",tigeranimation)
birdanimation.enterFrame=moveBird
Runtime:addEventListener("enterFrame",birdanimation)
catanimation.enterFrame=moveCat
Runtime:addEventListener("enterFrame",catanimation)
animation.collision=onManCollide
animation:addEventListener("collision",onManCollide)
rightArrow:addEventListener( "touch", handleFireButton )
--Runtime:addEventListener( "touch", handleFireButton )
--Runtime:addEventListener( "enterFrame", handleFireButton )
--upArrow:addEventListener("touch", jump)
--Runtime:addEventListener( "collision", onCollision )
--Runtime:addEventListener( "touch", onScreenTouch )
--rightArrow:addEventListener( "touch", handleFireButton )
end
function scene:exitScene( event )
Runtime:removeEventListener("enterFrame",background)
Runtime:removeEventListener("enterFrame",background1)
Runtime:removeEventListener("enterFrame",stone)
Runtime:removeEventListener("enterFrame",tigeranimation)
Runtime:removeEventListener("enterFrame",birdanimation)
Runtime:removeEventListener("enterFrame",catanimation)
Runtime:removeEventListener("enterFrame",onManCollide)
rightArrow:removeEventListener( "touch", handleFireButton )
upArrow:removeEventListener("touch", jump)
Runtime:removeEventListener( "collision", onCollision )
end
function scene:destroyScene( event )
end
--local myGroup=display.newGroup()
--physics.addBody(background,"static",{bounce=0.1,friction=0.9})
--physics.addBody(background1,"static",{ bounce=0.1,friction=0.9})
scene:addEventListener("createScene",scene)
scene:addEventListener("enterScene",scene)
scene:addEventListener("exitScene",scene)
scene:addEventListener("destroyScene",scene)
return scene

Answer 1

You need to ask a specific question, what you have said is quite vague. Does the game end each time the player fires the bullet? Also you should consider migrating from storyboard to composer.