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small update to capcom bowl

This commit is contained in:
dinkc64 2017-04-10 11:52:03 +00:00
parent d94cfff15b
commit 967d024f24
1 changed files with 10 additions and 2 deletions
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12
src/burn/drv/pre90s/d_capbowl.cpp
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@ -95,6 +95,14 @@ static void TrackReset()
track_y_last = 0;
}
static UINT8 ananice(INT16 anaval)
{
if (anaval > 1024) anaval = 1024;
if (anaval < -1024) anaval = -1024; // clamp huge values so don't overflow INT8 conversion (mouse)
return (anaval >> 4) & 0xff;
}
static UINT8 ProcessTrack(UINT8 pad)
{
if ((pad & 0xf0) == 0xf0 || pad < 0x10) pad = 0;
@ -106,7 +114,7 @@ static UINT8 ProcessTrack(UINT8 pad)
static UINT8 TrackY()
{
UINT8 pad = (DrvAnalogPort1 >> 4);
UINT8 pad = ananice(DrvAnalogPort1);
pad = ProcessTrack(0xff - pad) & 0xf; // reversed
if (pad) track_y_last = pad;
@ -116,7 +124,7 @@ static UINT8 TrackY()
static UINT8 TrackX()
{
UINT8 pad = (DrvAnalogPort0 >> 4);
UINT8 pad = ananice(DrvAnalogPort0);
pad = ProcessTrack(pad) & 0xf;
if (pad) track_x_last = pad;