I discovered Frozen Bubble and remembered that I had an unused
joystick (a USB clone of the legendary Competition Pro) sitting on
the shelf. Unfortunately, in the Change Keys menu, I can only
configure joy-left and joy-up. The joy-right and joy-down actions
are simply ignored.
Running testjoystick.c from SDL 1.2.15 and moving the stick around
shows this:
Joystick has 2 axes, 0 hats, 0 balls, and 4 buttons
Joystick 3 axis 0 value: -32768
Joystick 3 axis 0 value: 0
Joystick 3 axis 0 value: 32512
Joystick 3 axis 0 value: 0
Joystick 3 axis 1 value: -32768
Joystick 3 axis 1 value: 0
Joystick 3 axis 1 value: 32512
Joystick 3 axis 1 value: 0
This explains what's going on in frozen-bubble; translate_joystick_tokey()
has this check:
if ($value <= -32767 || $value >= 32767) { #- theoretically, it should
work properly with analog joysticks this way
return "joystick|axisvalue|$which|$axis|$value";
} else {
return "joystick|axisvalue|$which|$axis|0";
}
Commenting out the if and always executing the first return allows
me to use my joystick with frozen-bubble. Alas, I don't know
anything about joysticks or SDL's support for them. I have no idea
how that change affects other joysticks... for all I know the values
mine generates are simply wrong.
Any ideas?
--- frozen-bubble.orig Sat May 14 18:57:17 2016
+++ frozen-bubble Sat May 14 18:57:36 2016
@@ -2925,11 +2925,11 @@
if ($event->type == fb_c_stuff::JOYAXISMOTION()) {
my $axis = SDL::JoyAxisEventAxis(evt($event));
my $value = fb_c_stuff::JoyAxisEventValue(evt($event));
- if ($value <= -32767 || $value >= 32767) { #- theoretically, it
should work properly with analog joysticks this way
+# if ($value <= -32767 || $value >= 32767) { #- theoretically, it
should work properly with analog joysticks this way
return "joystick|axisvalue|$which|$axis|$value";
- } else {
- return "joystick|axisvalue|$which|$axis|0";
- }
+# } else {
+# return "joystick|axisvalue|$which|$axis|0";
+# }
} elsif ($event->type() == fb_c_stuff::JOYBUTTONDOWN()) {
my $button = SDL::JoyButtonEventButton(evt($event)) + 1;
return "joystick|buttondown|$which|$button";
--
Christian "naddy" Weisgerber [email protected]
