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Merge pull request #172 from LuigiBlood/master

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Fixed N64 Mouse wrapping.
This commit is contained in:
Vas Crabb 2015-05-03 10:05:25 +10:00
commit d0ca4ffffe
1 changed files with 6 additions and 9 deletions
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15
src/mame/machine/n64.c
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@ -1797,11 +1797,8 @@ int n64_periphs::pif_channel_handle_command(int channel, int slength, UINT8 *sda
case 2: //MOUSE
buttons = machine().root_device().ioport(portnames[(channel*5) + 0])->read();
x = machine().root_device().ioport(portnames[(channel*5) + 1 + 2])->read() - 128;
y = machine().root_device().ioport(portnames[(channel*5) + 2 + 2])->read() - 128;
//x /= 4;
//y /= 4;
x = (INT16)machine().root_device().ioport(portnames[(channel*5) + 1 + 2])->read();// - 128;
y = (INT16)machine().root_device().ioport(portnames[(channel*5) + 2 + 2])->read();// - 128;
int mouse_dx = 0;
int mouse_dy = 0;
@ -1811,9 +1808,9 @@ int n64_periphs::pif_channel_handle_command(int channel, int slength, UINT8 *sda
mouse_dx = x - mouse_x2[channel];
if (mouse_dx > 0x40)
mouse_dx = (0x80) - mouse_dx;
mouse_dx = (0x80) - (mouse_dx - ((mouse_dx / 0x80) * 0x80));
else if (mouse_dx < -0x40)
mouse_dx = -(0x80) - mouse_dx;
mouse_dx = -(0x80) - (mouse_dx - ((mouse_dx / 0x80) * 0x80));
mouse_x2[channel] = x;
}
@ -1823,9 +1820,9 @@ int n64_periphs::pif_channel_handle_command(int channel, int slength, UINT8 *sda
mouse_dy = y - mouse_y2[channel];
if (mouse_dy > 0x40)
mouse_dy = (0x80) - mouse_dy;
mouse_dy = (0x80) - (mouse_dy - ((mouse_dy / 0x80) * 0x80));
else if (mouse_dy < -0x40)
mouse_dy = -(0x80) - mouse_dy;
mouse_dy = -(0x80) - (mouse_dy - ((mouse_dy / 0x80) * 0x80));
mouse_y2[channel] = y;
}