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Only update position when it changes

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dschmenk 2013-09-12 18:43:08 -07:00
parent 95354ab2ee
commit e9627710c7
1 changed files with 13 additions and 6 deletions
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17
src/a2joy.c
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@ -141,17 +141,24 @@ void main(int argc, char **argv)
while (!stop) while (!stop)
{ {
if (gptoggle) if (gptoggle)
{
a2quickcall(pifd, READGP0, &absx); a2quickcall(pifd, READGP0, &absx);
else if (evabsx.value != absx || evabsy.value != absy)
a2quickcall(pifd, READGP1, &absy); {
a2read(pifd, BTTN_IO, 2, bttns);
gptoggle ^= 1;
if (isdebug) fprintf(stderr, "a2joy (%d, %d) [%d %d]\n", absx, absy, bttns[0] >> 7, bttns[1] >> 7);
evabsx.value = absx; evabsx.value = absx;
evabsy.value = absy; evabsy.value = absy;
write(joyfd, &evabsx, sizeof(evabsx)); write(joyfd, &evabsx, sizeof(evabsx));
write(joyfd, &evabsy, sizeof(evabsy)); write(joyfd, &evabsy, sizeof(evabsy));
write(joyfd, &evsync, sizeof(evsync)); write(joyfd, &evsync, sizeof(evsync));
}
}
else
{
a2quickcall(pifd, READGP1, &absy);
}
gptoggle ^= 1;
a2read(pifd, BTTN_IO, 2, bttns);
if (isdebug) fprintf(stderr, "a2joy (%d, %d) [%d %d]\n", absx, absy, bttns[0] >> 7, bttns[1] >> 7);
if ((bttns[0] & 0x80) != prevbttns[0]) if ((bttns[0] & 0x80) != prevbttns[0])
{ {
prevbttns[0] = bttns[0] & 0x80; prevbttns[0] = bttns[0] & 0x80;