porting MouseDown to iPhoneInput.Touch and/or uniTUIO events

Questions & Answers
1

Hi,
I’ve built a complete Unity app that works great for mouse. Now I’m trying to port it to multi-touch using uniTUIO, for use on an actual multi-touch table.

What I’d like to do is to simply replace these calls:

if (Input.GetMouseButtonDown(0)) {}
else if (Input.GetMouseButton(0)) {}
else if (Input.GetMouseButtonUp(0)) {}

with these calls:

if (iPhoneInput.touchCount > 0 && iPhoneInput.GetTouch(0).phase == iPhoneTouchPhase.Began) {}
else if (iPhoneInput.touchCount > 0 && iPhoneInput.GetTouch(0).phase == iPhoneTouchPhase.Moved) {}
else if (iPhoneInput.touchCount > 0 && iPhoneInput.GetTouch(0).phase == iPhoneTouchPhase.Ended) {}

I know this implementation isn’t true multi-touch… that’s the next step. For now, I just want my app to work with TUIO… and specifically uniTUIO, which appears to get mult-touch working by emulating iPhone touch events within its code.

The problem I’m experiencing is that my main script, which is attached to the Main Camera, is not receiving any of the iPhoneInput signals that uniTUIO is purportedly generating.

As a test I attached the uniTUIO supplied BBTouchableButton script to a few game objects, and designated Main Camera as the Notification Object. Sure enough, that properly triggered the doTouchDown() and doTouchUp() functions in my Main Camera script when the afroementioned gameObjects were touched. So uniTUIO is working at SOME level…

just need some guidance on getting the actual iPhoneTouch events to propagate globally…

2

I am trying to work on a similar thing as far as I can tell so hopefully I can help you.

First things first, you need a TUIOStarter prefab with some scripts attached. These scripts are BBTouchManagerStarter (BBIPhoneTouchManager needs to be attached to this on the Event Manager Prefab slot) and for helping with testing, BBCrosshairController. Then just drag the prefab in to your scene.

Then on any objects you want to be drag-able, you need some more scripts. You need BBBasicTouchManipulation and BBTouchableButton. Included in the former script is a line which sends a message when the touch is down and another when the touch is up. So to have events on touch down, just create a function called “doTouchDown” in any of the scripts attached to the same object and the same for “doTouchUp”

Hope this helps and I did understand your problem correctly and good luck with the rest of it!

Matt