That is, if I have a 10x10 grid with items in them, and I want to do to touch/drag, then is a listener per item ok re best practice? Will be 100 listeners then.
If they are truly 100 unique objects, then yes. Otherwise if they have very minor differences you may only need a few listeners.
there will be only one listener handler function, but many listeners - hopefully my terminology is correct here - so what I mean is there will be 100 display object’s for which each has a “xxx:addEventListener( “touch”, onTouch )” applied to it
Yes. Well each object will require a listener if you want the user to be able to interact with it. Without knowing anything about your project its hard to say that 1 listener is the best approach.
Several times I’ve created grids of objects (dozens at a time) where every object calls the same listener function. Each object has a unique ID so I can tell which one was touched. I’m not usually doing any hardcore action, but never noticed any performance problems.
Jay
If they are truly 100 unique objects, then yes. Otherwise if they have very minor differences you may only need a few listeners.
there will be only one listener handler function, but many listeners - hopefully my terminology is correct here - so what I mean is there will be 100 display object’s for which each has a “xxx:addEventListener( “touch”, onTouch )” applied to it
Yes. Well each object will require a listener if you want the user to be able to interact with it. Without knowing anything about your project its hard to say that 1 listener is the best approach.
Several times I’ve created grids of objects (dozens at a time) where every object calls the same listener function. Each object has a unique ID so I can tell which one was touched. I’m not usually doing any hardcore action, but never noticed any performance problems.
Jay