set isTouchEnabled for one layer from another layer

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set isTouchEnabled for one layer from another layer

(5 posts) (3 voices)

Started 2 years ago by adpro
Latest reply from natanavra

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adpro
Member

Hello,

I'm basically just wondering if there is a way to set isTouchEnabled on a layer from another layer.

Basically this is what I have.

Layer1
adds two other layers - Layer2 and Layer3

Layer2
handles touches to begin with - working well

Layer3
handle touches when it needs to

Now, I'm at work and not on my mac, but what I am trying to do is setup a 'menu' type layer that opens up on top of the other layer - I want only this menu layer to be touch enabled.

So, through Layer1, I load both layers (the menu one doesn't take up much memory) and I set Layer3 (menu layer) to have a greater Z value than Layer2 - so, it pops up in front.

Now, this works fine if I handle all the touches through Layer2, but I don't want to do that. I want Layer3 to handle touches.

I hope this makes sense.

Either way, I have tried to do something along the lines of:

Layer3.isTouchEnabled = YES;
Layer2.isTouchEnabled = NO;

It tells me I can't do this.

So, if I were to set a CocosNode in Layer1 for Layer2 and Layer3, is there a way to set something in that node to have isTouchEnabled changed?

If not, I'll have to explore other options. Any suggestions?

I hope this all makes sense. I can provide some code in a few hours.

Posted 2 years ago #
adpro
Member

"So, through Layer1, I load both layers (the menu one doesn't take up much memory) and I set Layer3 (menu layer) to have a greater Z value than Layer2 - so, it pops up in front."

I wanted to edit this. Sorry, I can see how this wouldn't make much sense.

So, through Layer1, I load both layers (the menu one doesn't take up much memory) and I set Layer3 (menu layer) to have a LOWER Z value than Layer2 - Then, when I want it to pop up, I use that child functions (can't remember what it is) to change the Z value of Layer3 to be greater than Layer 2 - so, it pops up in front.

I can go back as well, but only if Layer2 is the one handling the touches - Layer3 never seems to handle any touch events.

Posted 2 years ago #
adpro
Member

I just wanted to let anyone that might look at this know how I did this.

However, it produces some warnings.

I setup a node and threw it into an object variable

theMainLayer = [MyLayer node];

I then set the isTouchEnabled the following way where I needed to

[theMainLayer setIsTouchEnabled:YES];

That line gives an error, though. It says "warning: 'CocosNode' may not respond to '-setIsTouchEnabled:'

Anyone know how I can get rid of these warnings? Everything works the way it should, so I know CocosNode should respond to '-setIsTouchEnabled:'

Posted 2 years ago #
Clain
Member

What does the node function in your MyLayer class look like ? You must have a problem somewhere because the type of your theMainLayer variable should be MyLayer and not CocosNode as stated in the warning.

Posted 2 years ago #
natanavra
Member

You could probably eliminate the layer like so:

[(MyLayer *)theMainLayer setIsTouchEnabled:YES];

As Clain suggested, just casting instead.

Posted 2 years ago #

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