Spawning a Limited Amount of Objects

QuasarCreator · June 2012

In my game I am working on once I press a button an object is spawned. However, I want to limit the number of times the button can pressed to spawn an object. Here is my code:

	local x=3
	local rec_smallBnt = Button.new(Bitmap.new(Texture.new("images/rec_smallBnt.png")),
	Bitmap.new(Texture.new("images/rec_smallBnt.png")))
	rec_smallBnt:setPosition((application:getContentWidth()- 90), (application:getContentHeight() * 0.5 + 105))
	self:addChild(rec_smallBnt)
 
	rec_smallBnt:addEventListener("click",
		function()
			x = x - 1
			if x == 2 then 
			local rec_small = Bitmap.new(Texture.new("images/rec_small.png"))
			--setting the x and y coordinates randomly
			rec_small:setX(math.random(0, 320 - 100))
			rec_small:setY(math.random(0, 480 - 50))
 
			rec_small.isFocus = false
			--add the event listeners for the two functions
			rec_small:addEventListener(Event.MOUSE_DOWN, onMouseDown, rec_small)
			rec_small:addEventListener(Event.MOUSE_MOVE, onMouseMove, rec_small)
			rec_small:addEventListener(Event.MOUSE_UP, onMouseUp, rec_small)
			--adding the shape to the stage
			self:addChild(rec_small)
 
			elseif x == 1 then
			local rec_small = Bitmap.new(Texture.new("images/rec_small.png"))
			--setting the x and y coordinates randomly
			rec_small:setX(math.random(0, 320 - 100))
			rec_small:setY(math.random(0, 480 - 50))
 
			rec_small.isFocus = false
			--add the event listeners for the two functions
			rec_small:addEventListener(Event.MOUSE_DOWN, onMouseDown, rec_small)
			rec_small:addEventListener(Event.MOUSE_MOVE, onMouseMove, rec_small)
			rec_small:addEventListener(Event.MOUSE_UP, onMouseUp, rec_small)
			--adding the shape to the stage
			self:addChild(rec_small)
 
			end
		end
	)

In this code I am trying to make it so each time the button is clicked x is subtracted 1. Then I am using if and else if statements to spawn only 2 objects which will then call the other functions. However, when I press the button no objects are spawning. I am sure that the way I am doing it is wrong. So, how am I suppose to fix this or how could I do this better?

-Thanks in advance!!

ar2rsawseen · June 2012

Hmm, it seems strange, but it work ok form. Does it give any errors?
Here's a little code I've tried:

local x=3
local rec_smallBnt = Button.new(Bitmap.new(Texture.new("crate.png")),
Bitmap.new(Texture.new("crate.png")))
rec_smallBnt:setPosition((application:getContentWidth()- 90), (application:getContentHeight() * 0.5 + 105))
stage:addChild(rec_smallBnt)
 
rec_smallBnt:addEventListener("click",function()
		x = x - 1
		if x > 0 then 
		local rec_small = Bitmap.new(Texture.new("crate.png"))
		--setting the x and y coordinates randomly
		rec_small:setX(math.random(0, 320 - 100))
		rec_small:setY(math.random(0, 480 - 50))
 
		rec_small.isFocus = false
		--add the event listeners for the two functions
		--adding the shape to the stage
		stage:addChild(rec_small)
		end
	end
)

QuasarCreator · June 2012

@ar2rsawseen Thank you! I changed something up and my code started working, however, I also tried your code where x > 0 and it seems to run a little faster (or at least it seemed faster to respond to the second click).

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