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#!/usr/bin/env perl
#
#
# testjoystick.pl
#
# adapted from SDL-1.2.x/test/testjoystick.c
use strict;
#use warnings;
use SDL;
use SDL::App;
use SDL::Rect;
use SDL::Event;
sub WatchJoystick($){
(my $joystick) = @_;
my $screenWidth = 640;
my $screenHeight = 480;
my $app = new SDL::App(-title => "Joystick Test",
-width => $screenWidth,
-height => $screenHeight,
-depth=> 16 );
#Print information about the joystick we are watching
my $name = SDL::JoystickName(SDL::JoystickIndex($joystick));
print "Watching joystick ".SDL::JoystickIndex($joystick).
": (".($name ? $name : "Unknown Joystick" ).")\n";
print "Joystick has ".SDL::JoystickNumAxes($joystick)." axes, ".
SDL::JoystickNumHats($joystick)." hats, ".
SDL::JoystickNumBalls($joystick)." balls, and ".
SDL::JoystickNumButtons($joystick)." buttons\n";
my $event = new SDL::Event;
my $done = 0;
my $colorWhite = new SDL::Color(-r=>255, -g=>255, -b=>255);
my $colorBlack = new SDL::Color();
my @axisRect = ();
my $numAxes=SDL::JoystickNumAxes($joystick);
while(!$done)
{
while($event->poll())
{
if($event->type() eq SDL_JOYAXISMOTION)
{
print "Joystick ".SDL::JoyAxisEventWhich($$event).
" axis ".SDL::JoyAxisEventAxis($$event).
" value: ".SDL::JoyAxisEventValue($$event)."\n";
}
elsif($event->type() eq SDL_JOYHATMOTION)
{
print "Joystick ".SDL::JoyHatEventWhich($$event).
" hat ".SDL::JoyHatEventHat($$event);
if(SDL::JoyHatEventValue($$event) == SDL_HAT_CENTERED() )
{
print " centered";
} elsif(SDL::JoyHatEventValue($$event) == SDL_HAT_UP() ) {
print " up";
} elsif(SDL::JoyHatEventValue($$event) == SDL_HAT_RIGHT() ) {
print " right";
} elsif(SDL::JoyHatEventValue($$event) == SDL_HAT_DOWN() ) {
print " down";
} elsif(SDL::JoyHatEventValue($$event) == SDL_HAT_LEFT()) {
print " left";
} elsif(SDL::JoyHatEventValue($$event) == SDL_HAT_RIGHTUP() ) {
print " right & up";
} elsif(SDL::JoyHatEventValue($$event) == SDL_HAT_RIGHTDOWN() ) {
print " right & down";
} elsif(SDL::JoyHatEventValue($$event) == SDL_HAT_LEFTDOWN() ) {
print " left & down";
} elsif(SDL::JoyHatEventValue($$event) == SDL_HAT_LEFTUP()) {
print " left & up";
}
print "\n";
} elsif($event->type() eq SDL_JOYBALLMOTION){
print "Joystick ".SDL::JoyBallEventWhich($$event).
" ball ".SDL::JoyBallEventBall($$event).
" delta: (".SDL::JoyBallEventXrel($$event).
",".SDL::JoyBallEventYrel($$event)."\n";
} elsif($event->type() eq SDL_JOYBUTTONDOWN){
print "Joystick ".SDL::JoyButtonEventWhich($$event).
" button ".SDL::JoyButtonEventButton($$event)." down\n";
} elsif($event->type() eq SDL_JOYBUTTONUP){
print "Joystick ".SDL::JoyButtonEventWhich($$event).
" button ".SDL::JoyButtonEventButton($$event)." up\n";
} elsif($event->type() eq SDL_QUIT or
($event->type() eq SDL_KEYDOWN and
$event->key_sym() == SDLK_ESCAPE)){
$done = 1;
}
#Update visual joystick state
for(my $i =0; $i < SDL::JoystickNumButtons($joystick); $i++)
{
my $rect = new SDL::Rect( -width => 32,
-height => 32,
-x => $i*34,
-y => $screenHeight-34);
if(SDL::JoystickGetButton($joystick, $i) eq SDL_PRESSED)
{
$app->fill($rect, $colorWhite);
} else {
$app->fill($rect, $colorBlack);
}
$app->update($rect);
}
for (my $i = 0; $i < $numAxes; $i+=1)
{
#Remove previous axis box
if($axisRect[$i]){
$app->fill($axisRect[$i], $colorBlack);
$app->update($axisRect[$i]);
}
# Draw the axis
my $ox = SDL::JoystickGetAxis($joystick, $i);
my $x= abs ($ox/256);
if( $x < 0) {
$x=0;
} elsif ( $x > ($screenWidth-16) ){
$x = $screenWidth-16;
}
if ($ox < 0)
{
$axisRect[$i] = new SDL::Rect( -width=> $x,
-height=> 32,
-x => ($screenWidth/2) - $x,
-y => $i*34
);
}
else
{
$axisRect[$i] = new SDL::Rect( -width=> $x,
-height=> 32,
-x => $screenWidth/2 ,
-y => $i*34
);
}
$app->fill($axisRect[$i], $colorWhite);
$app->update($axisRect[$i]);
}
}
}
}
die "Could not initialize SDL: ", SDL::GetError()
if( 0 > SDL::Init(SDL_INIT_JOYSTICK()));
printf "There are %d joysticks attched\n", SDL::NumJoysticks();
for(my $i = 0; $i < SDL::NumJoysticks(); $i++){
my $name = SDL::JoystickName($i);
print "Joystick ".$i.": ".($name ? $name : "Unknown Joystick")."\n";
}
if ( $ARGV[0] ne undef){
my $joystick = SDL::JoystickOpen($ARGV[0]);
if(!$joystick){
print "Couldn't open joystick ".$ARGV[0].": ".SDL::GetError()."\n";
} else {
WatchJoystick($joystick);
SDL::JoystickClose($joystick);
}
SDL::QuitSubSystem(SDL_INIT_JOYSTICK());
}
exit;
sub draw_axis_method_2()
{
}
__DATA__
sub draw_axis_method_1()
{
for (my $i = 0; $i < ($numAxes/2); $i+=2)
{
#Remove previous axis box
if($axisRect[$i]){
$app->fill($axisRect[$i], $colorBlack);
$app->update($axisRect[$i]);
}
# Draw the X/Y axis
my $x = SDL::JoystickGetAxis($joystick, $i)+32768;
$x *= $screenWidth;
$x /= 65535;
if( $x < 0) {
$x=0;
} elsif ( $x > ($screenWidth-16) ){
$x = $screenWidth-16;
}
my $y = SDL::JoystickGetAxis($joystick, $i+1)+32768;
$y *= $screenHeight;
$y /= 65535;
if( $y < 0) {
$y=0;
} elsif ( $y > ($screenHeight-16) ){
$y = $screenHeight-16;
}
$axisRect[$i] = new SDL::Rect( -width=> 16,
-height=> 16,
-x => $x,
-y => $y);
$app->fill($axisRect[$i], $colorWhite);
$app->update($axisRect[$i]);
}
}
}
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