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improve armadillo control

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This commit is contained in:
Michaël Banaan Ananas 2013-02-02 15:42:59 +00:00
parent 2c7397d1d9
commit c1e2d21c46
2 changed files with 51 additions and 26 deletions
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76
src/mame/drivers/namcos22.c
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@ -3012,37 +3012,63 @@ MACHINE_CONFIG_END
TIMER_CALLBACK_MEMBER(namcos22_state::adillor_trackball_interrupt)
{
generic_pulse_irq_line(m_mcu, param ? M37710_LINE_TIMERA2TICK : M37710_LINE_TIMERA3TICK, 1);
m_ar_tb_interrupt[param]->adjust(m_ar_tb_reload[param], param);
}
TIMER_DEVICE_CALLBACK_MEMBER(namcos22_state::adillor_trackball_update)
{
// arbitrary timer for reading trackball
for (int axis = 0; axis < 2; axis++)
// arbitrary timer for reading optical trackball
UINT8 ix = ioport("TRACKX")->read();
UINT8 iy = ioport("TRACKY")->read();
if (ix != 0x80 || iy < 0x80)
{
UINT16 ipt = ioport(axis ? "TRACKY" : "TRACKX")->read();
if (ipt > 0 && ipt < 0x8000)
if (iy >= 0x80)
iy = 0x7f;
double x = (double)(ix - 0x80) / 127.0;
double y = (double)(0x80 - iy) / 127.0;
// normalize
double a = atan(x/y);
double p = sqrt(x*x + y*y);
double v = (fabs(a) < (M_PI / 4.0)) ? p*cos(a) : p*sin(a);
v = fabs(v);
// note that it is rotated by 45 degrees, so instead of axes like (+), they are like (x)
a += (M_PI / 4.0);
if (a < 0)
a = 0;
else if (a > (M_PI / 2.0))
a = M_PI / 2.0;
// tied to mcu A2/A3 timer (speed determines frequency)
// these values(in usec) may need tweaking:
const int base = 1000;
const int range = 5000;
double t[2];
t[0] = v*sin(a); // y -> A2
t[1] = v*cos(a); // x -> A3
for (int axis = 0; axis < 2; axis++)
{
// optical trackball, tied to mcu A2/A3 timer (speed determines frequency)
// note that it is rotated by 45 degrees, so instead of axes like (+), they are like (x)
// (not yet tested on a real trackball, values below still need to be tweaked)
const int cap = 256;
const int maxspeed = 500;
const int sensitivity = 50;
if (ipt > cap) ipt = cap;
ipt = cap - ipt;
attotime freq = attotime::from_usec(maxspeed + sensitivity * ipt);
m_ar_tb_reload[axis] = freq;
m_ar_tb_interrupt[axis]->adjust(min(freq, m_ar_tb_interrupt[axis]->remaining()), axis);
if (t[axis] > (1.0 / (double)(range)))
{
attotime freq = attotime::from_usec((base + range) - ((double)(range) * t[axis]));
m_ar_tb_interrupt[axis]->adjust(min(freq, m_ar_tb_interrupt[axis]->remaining()), axis, freq);
}
else
{
// not moving
m_ar_tb_interrupt[axis]->adjust(attotime::never, axis, attotime::never);
}
}
else
}
else
{
// both axes not moving
for (int axis = 0; axis < 2; axis++)
{
// backwards or not moving
m_ar_tb_reload[axis] = attotime::never;
m_ar_tb_interrupt[axis]->adjust(attotime::never, axis);
m_ar_tb_interrupt[axis]->adjust(attotime::never, axis, attotime::never);
}
}
}
@ -5211,10 +5237,10 @@ static INPUT_PORTS_START( adillor )
PORT_BIT( 0xfe, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("TRACKX")
PORT_BIT( 0xffff, 0x0000, IPT_TRACKBALL_X ) PORT_SENSITIVITY(100) PORT_KEYDELTA(200) PORT_RESET
PORT_BIT( 0xff, 0x80, IPT_AD_STICK_X ) PORT_MINMAX(0x01, 0xff) PORT_SENSITIVITY(100) PORT_KEYDELTA(20)
PORT_START("TRACKY")
PORT_BIT( 0xffff, 0x0000, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(100) PORT_KEYDELTA(200) PORT_RESET PORT_REVERSE
PORT_BIT( 0xff, 0x80, IPT_AD_STICK_Y ) PORT_MINMAX(0x01, 0xff) PORT_SENSITIVITY(100) PORT_KEYDELTA(20)
INPUT_PORTS_END /* Armadillo Racing */
static INPUT_PORTS_START( propcycl )

1
src/mame/includes/namcos22.h
View File

@ -78,7 +78,6 @@ public:
optional_shared_ptr<UINT32> m_czram;
int m_bEnableDspIrqs;
attotime m_ar_tb_reload[2];
emu_timer *m_ar_tb_interrupt[2];
UINT16 m_MasterBIOZ;
UINT32 *m_pPointRAM;