Events, Frames, Stages.. oh my!

mysps · June 2012

hey guys..

still learning.. ok i'm working from the e-book template, on page1.lua there is a toy moving.. and worked well until i added sound to the page from page4.lua.. i've read and read, classes and events however, i guess i don't get it... here is my code, i'm guessing there is a conflict with those two events? i can have more than one mousedown correct?

Page1 = gideros.class(Sprite)
 
 
 
function Page1:init( pageNo, parent)
	self.no = pageNo
 
	self.background = Bitmap.new(TextureRegion.new(Texture.new("gfx/background.png", true)))	
 
	self.toy =  Bitmap.new(TextureRegion.new(Texture.new("gfx/doll.png", true )))	
	self.toy:setX(400)
	self.toy:setY(300)
 
	self.ball =  Bitmap.new(TextureRegion.new(Texture.new("gfx/ball.png", true)))	
	self.ball:setX(600)
	self.ball:setY(100)	
	self.ball.scaleX = 1
	self.ball.inc = -0.001
 
    self.buttonup =  Bitmap.new(TextureRegion.new(Texture.new("gfx/1-up.png", true)))	
	self.buttonup:setX(20)
	self.buttonup:setY(645)
 
	 self.buttonup2 =  Bitmap.new(TextureRegion.new(Texture.new("gfx/2-up.png", true)))	
	self.buttonup2:setX(140)
	self.buttonup2:setY(645)
 
 
	self:addChild(self.background)
	self:addChild(self.toy)	
	self:addChild(self.buttonup)
	self:addChild(self.buttonup2)
	self:addChild(self.ball)
 
	self.sound = Sound.new("music/Japanese/cat.mp3")
 
 
	self.toy.isMoving = false
 
	self:addEventListener(Event.ADDED_TO_STAGE, self.onAddedToStage, self)	
	self:addEventListener(Event.REMOVED_FROM_STAGE, self.onRemovedFromStage, self)	
 
end
 
function Page1:onAddedToStage()
	-- we need mouse functions to interact with the toy
	self:addEventListener(Event.MOUSE_DOWN, self.onMouseDown, self)
	self:addEventListener(Event.MOUSE_UP, self.onMouseUp, self)
	self:addEventListener(Event.MOUSE_MOVE, self.onMouseMove, self)
	self:addEventListener(Event.ENTER_FRAME, self.onEnterFrame, self)
 
end
 
function Page1:onRemovedFromStage()
 
	self:removeEventListener(Event.ENTER_FRAME, self.onEnterFrame, self)
end	
 
 
 
 
 
 
function Page1:onMouseDown(event)
	-- touch event begins here. you need to get the initial x and y, we will use them later
	if (self.toy:hitTestPoint(event.x, event.y) == true) then 
		self.toy.isMoving = true
		self.toy.x0 = event.x
		self.toy.y0 = event.y
		print("toy")
	end
 
end		
 
function Page1:onMouseUp(event)
	-- touch event ends here. we must get out of the mode.
	if (self.toy.isMoving == true) then  self.toy.isMoving = false end
 
end		
 
function Page1:onMouseMove(event)
 
	if (self.toy.isMoving == true) then  
		-- calculate the difference
		local dx = event.x - self.toy.x0
		local dy = event.y - self.toy.y0
		--store the new x,y of touch coordinates
		self.toy.x0 = event.x
		self.toy.y0 = event.y
		--set the new coordinates
		self.toy:setX(dx + self.toy:getX())
		self.toy:setY(dy + self.toy:getY())
	end
 
end		
 
 
 
 
 
function Page1:onMouseDown(event)
	-- touch event begins here. you need to get the initial x and y, we will use them later
	if (self.buttonup:hitTestPoint(event.x, event.y) == true) then 
		self.sound:play()
 
	end
 
end
 
 
function Page1:onMouseDown(event)
	-- touch event begins here. you need to get the initial x and y, we will use them later
	if (self.buttonup2:hitTestPoint(event.x, event.y) == true) then 
		self.sound:play()
 
	end
 
end
 
 
 
function Page1:onEnterFrame(event)
	self.ball.scaleX = self.ball.scaleX  + self.ball.inc
	if (self.ball.scaleX < 0.85) and self.ball.inc < 0  then self.ball.inc = -self.ball.inc end 
	if (self.ball.scaleX > 1) and self.ball.inc > 0 then self.ball.inc = -self.ball.inc end 
 
	self.ball:setScaleX(self.ball.scaleX)
end

right? thanks for any tidbits!

evs · June 2012

@mysps

No - only one mousedown etc will work, do all your logic there, try something like

function Page1:onMouseDown(event)
	-- touch event begins here. you need to get the initial x and y, we will use them later
	if (self.toy:hitTestPoint(event.x, event.y) == true) then 
		self.toy.isMoving = true
		self.toy.x0 = event.x
		self.toy.y0 = event.y
		print("toy")
 
	elseif (self.buttonup2:hitTestPoint(event.x, event.y) == true) then 
		self.sound:play()
 
	end
 
end

cheers

evs

mysps · June 2012

gotcha!! thanks so much .. i'll get there sooner or later

marbolec · August 2012

how to avoid sound overlapping when the button is touched twice / repeatedly?

elseif (self.buttonup2:hitTestPoint(event.x, event.y) == true) then
self.sound:play()

end

talis · August 2012

You can create a boolean paremeter and check that one. In addition sound:play() is returning a channel for you to keep track of it.

soundplay=false
 
if(soundplay==false) then
		  channel=sound:play(0,math.huge)
		  soundplay=true
else
		  channel:stop()
		  soundplay=false
end

talis · August 2012

I am not aware of a function like channel:isplaying() but you can easilly write one your self.

talis · August 2012

@mysps did you able to solve your problem?

marbolec · August 2012

@talis : I have tried your code, but still not work

Here's my code before:
where should I put your code?

 -- create a mouse joint on mouse down
function self:onMouseDown(event)
	if sprite:hitTestPoint(event.x, event.y) then
		local jointDef = b2.createMouseJointDef(ground, body1, event.x, event.y, 100000)
		mouseJoint = self.world:createJoint(jointDef)
		self.channel  = self.sound:play()
		self.channel:setVolume(0.3)
	end
end

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