Marek Wyszynski wrote:
> I'm porting a shooting game to PalmOS 5. My game requires constant
> high frame rates (>30fps). Now I'm facing a serious problem with
> pen events. When I tap the screen and hold pen down my framerate
> falls down 30%-50%! Since in my game I need to be able to control
> the ship using pen this is a big problem for me.
>
> I tried to catch penDownEvent/penUpEvent/penMoveEvent in my event
> loop and not let the system to process them but it does not rally
> make any difference.
One possible solution is to process the pen by using EvtGetPen()
in a loop instead of letting the system give you separate events
for each little movement. Like this:
case penDownEvent:
if (PenInShipControlArea())
{
Coord penx, peny;
Boolean pendown;
EvtGetPen (& penx, & peny, & pendown);
while (pendown)
{
ControlShip (penx, peny);
EvtGetPen (& penx, & peny, & pendown);
}
}
break;
That's a little simplistic because you may need to do other
stuff to advance the state of the game other than just
moving the ship, but you get the general idea.
- Logan
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