translating SIO2widget

Hi all,

I'm a bit confused as to why SIO2widget has a member SIO2transform. Shouldn't widget locations be in 2D int coordinates?

What's the proper way to move an SIO2widget around on the screen?


Thanks!! Best,
-j

maybe you need to move your collimator when you move your gun.

Har har.

And it's a crosshair, thank you very much :-)


-j

You can move a widget around pretty easily like this:

myWidget->_SIO2transform->loc->x += d.y;
myWidget->_SIO2transform->loc->y -= d.x;

I am actually in the process of making sio2Sprite for a 2d game. sio2Widget doesn't have quite enough functionality for 2d games. Up until today, I was using an sio2Widget as the backing store for the sprite, but I am branching it now to be it's own type. It will allow easy movement, scaling, fading, animations, etc. Once it's done, I will send it over to SIO2 and if he wants it to be part of the SDK it will be his to include.

Thanks, but where are you getting d, x, and y :-)


-j

I should have explained that...

d is just a vec2. d.x and d.y are just the distance a finger moved on the screen. The following code snippet should let you know where they came from. It has some extra stuff that you can disregard from the sprite class i mentioned...

Code:

vec2 start;
void templateScreenTap( void *_ptr, unsigned char _state )
{
   if( _state == SIO2_WINDOW_TAP_DOWN )
   {
      // Set a flag to show we are being touched
      beingTouched = 1;
      
      // Start the animation timer
      sio2TimerPlay( myTimer );
      
      // Save our start x position so we can figure out where to move if TouchMoved gets called
      start.x = sio2->_SIO2window->touch[ 0 ].x;
      start.y = sio2->_SIO2window->touch[ 0 ].y;
   }
   else
   {
      // Reset the flag so our widget zooms back out
      beingTouched = 0;
      
      // Stop the timer
      sio2TimerStop( myTimer );
   }
}


void templateScreenTouchMove( void *_ptr )
{
   vec2 d;
   d.y = sio2->_SIO2window->touch[ 0 ].x - start.x;
   d.x = start.y - sio2->_SIO2window->touch[ 0 ].y;
   
   myWidget->_SIO2transform->loc->x += d.y;
   myWidget->_SIO2transform->loc->y -= d.x;
   
   start = sio2->_SIO2window->touch[ 0 ];
}