Function only works at losing condition and not winning condition - lua

Question

When players lose the game the gameFun function is called but for some reason when i switch alert(win) to gameFun and the alert(lose) in processAnswer to alert(win), it doesn't work. My aim is to ask users a question after they won or lost the game.
--ball collides with balloon
function ballCollision(e)
if (e.other.name == 'balloon') then
--ball collision codes
end
if(target.text == '0') then
alert('win')
end
end
function checkGameover()
print( "Check game over" )
for i = 1, cannonBalls.numChildren do
print( i )
if(tonumber(ballRemain.text) <= 0) then
gameFun()
end
end
end
function gameFun()
balloonText.isVisible = false
balloonTextt.isVisible = false
balloonTexttt.isVisible = false
questionText.isVisible = false
askUser = display.newText('Is the cannon hard to use?', display.contentCenterX, display.contentWidth / 4, native.systemFont, 20 )
askUser:setFillColor(135, 75, 44)
yesBtn = display.newImage("Yes.png",120,290)
noBtn = display.newImage("No.png",190,290)
yesBtn:addEventListener ('tap', ansQuestion)
noBtn:addEventListener ('tap', ansQuestion)
end
function ansQuestion(event)
if event.target==noBtn then
answer = answer+0
else
answer = answer+1
end
print('send mail')
sendMail()
askUser.isVisible = false
yesBtn.isVisible = false
noBtn.isVisible = false
yesBtn:removeEventListener ('tap', ansQuestion)
noBtn:removeEventListener ('tap', ansQuestion)
alert('lose')
end
function alert(state)
gameListeners('rmv')
local alert
if(state == 'win') then
alert = display.newImage('win.png')
else
alert = display.newImage('lose.png')
end
askUser.isVisible = false
yesBtn.isVisible = false
noBtn.isVisible = false
print("time from start: ", (system.getTimer()-gameTime))
alert.anchorX = 0.5
alert.anchorX = 0.5
alert.x = display.contentCenterX
alert.y = display.contentCenterY
transition.from(alert, {time = 3000, xScale = 0.3, yScale = 0.3})
local score = display.newText(score.text, 300, -30, native.systemFontBold, 20)
score:setFillColor(135, 75, 44)
end
Also when sendMail function is on, it gives me this
As far as i can tell, it keeps going back and forth between ansQuestion and alert(state). Is there a way to fix this?

Answer 1

When you call alert(lose) in ansQuestion(), Lua interprets lose as a variable, not a string. Since the variable does not exist, it is nil, so the second branch of the if (state == 'win') gets executed. It so happens that in the case of "lose", this is the branch you want, but it is just luck. When you do alert(win), win is also a variable so it is nil, so the same branch gets executed, and that time it is the wrong branch. Use
alert('lose')
and
alert('win')
as you did in ballCollision listener. Note that there are several lines of duplicate code in ansQuestion and alert.

Answer 2

In your alert function you passed the string value 'lose'. That's why it's always calling losing condition.
As per my knowledge, you need to call this function.
local answer = 0
function ansQuestion(event)
if event.target==noBtn then
answer = 0
else
answer = 1
end
sendMail()
askUser.isVisible = false
yesBtn.isVisible = false
noBtn.isVisible = false
yesBtn:removeEventListener ('tap', ansQuestion)
noBtn:removeEventListener ('tap', ansQuestion)
alert(answer)
end
function alert(state)
gameListeners('rmv')
local alert
if(state == 1) then
alert = display.newImage('win.png')
else
alert = display.newImage('lose.png')
end
askUser.isVisible = false
yesBtn.isVisible = false
noBtn.isVisible = false
print("time from start: ", (system.getTimer()-gameTime))
alert.anchorX = 0.5
alert.anchorX = 0.5
alert.x = display.contentCenterX
alert.y = display.contentCenterY
transition.from(alert, {time = 3000, xScale = 0.3, yScale = 0.3})
local score = display.newText(score.text, 300, -30, native.systemFontBold, 20)
score:setFillColor(135, 75, 44)
end