Mercurial > repos > blastem
diff io.c @ 910:c030e4af32b7
Mouse X and Y are 9-bit 2's complement not 8-bit magnitude + sign bit like I thought. Fixed mouse Y direction.
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Sat, 05 Dec 2015 18:40:34 -0800 |
parents | b5d35222047e |
children | 73732ae76fa8 |
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--- a/io.c Sat Dec 05 00:17:15 2015 -0800 +++ b/io.c Sat Dec 05 18:40:34 2015 -0800 @@ -1229,7 +1229,7 @@ //it would be unfortunate if our event handler updated cur_x or cur_y in the middle //of the mouse poll sequence, so we save the delta here port->device.mouse.delta_x = port->device.mouse.cur_x - port->device.mouse.last_read_x; - port->device.mouse.delta_y = port->device.mouse.cur_y - port->device.mouse.last_read_y; + port->device.mouse.delta_y = port->device.mouse.last_read_y - port->device.mouse.cur_y; if (port->device.mouse.delta_y > 255 || port->device.mouse.delta_y < -255) { input |= 8; } @@ -1247,16 +1247,16 @@ input = port->input[0]; break; case 5: - input = abs(port->device.mouse.delta_x) >> 4 & 0xF; + input = port->device.mouse.delta_x >> 4 & 0xF; break; case 6: - input = abs(port->device.mouse.delta_x) & 0xF; + input = port->device.mouse.delta_x & 0xF; break; case 7: - input = abs(port->device.mouse.delta_y) >> 4 & 0xF; + input = port->device.mouse.delta_y >> 4 & 0xF; break; case 8: - input = abs(port->device.mouse.delta_y) & 0xF; + input = port->device.mouse.delta_y & 0xF; //need to figure out when this actually happens port->device.mouse.last_read_x = port->device.mouse.cur_x; port->device.mouse.last_read_y = port->device.mouse.cur_y;