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comparison io.c @ 910:c030e4af32b7

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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
comparison
equal deleted inserted replaced
909:e60eb88d7b09 910:c030e4af32b7
1227 case 3: 1227 case 3:
1228 input = 0; 1228 input = 0;
1229 //it would be unfortunate if our event handler updated cur_x or cur_y in the middle 1229 //it would be unfortunate if our event handler updated cur_x or cur_y in the middle
1230 //of the mouse poll sequence, so we save the delta here 1230 //of the mouse poll sequence, so we save the delta here
1231 port->device.mouse.delta_x = port->device.mouse.cur_x - port->device.mouse.last_read_x; 1231 port->device.mouse.delta_x = port->device.mouse.cur_x - port->device.mouse.last_read_x;
1232 port->device.mouse.delta_y = port->device.mouse.cur_y - port->device.mouse.last_read_y; 1232 port->device.mouse.delta_y = port->device.mouse.last_read_y - port->device.mouse.cur_y;
1233 if (port->device.mouse.delta_y > 255 || port->device.mouse.delta_y < -255) { 1233 if (port->device.mouse.delta_y > 255 || port->device.mouse.delta_y < -255) {
1234 input |= 8; 1234 input |= 8;
1235 } 1235 }
1236 if (port->device.mouse.delta_x > 255 || port->device.mouse.delta_x < -255) { 1236 if (port->device.mouse.delta_x > 255 || port->device.mouse.delta_x < -255) {
1237 input |= 4; 1237 input |= 4;
1245 break; 1245 break;
1246 case 4: 1246 case 4:
1247 input = port->input[0]; 1247 input = port->input[0];
1248 break; 1248 break;
1249 case 5: 1249 case 5:
1250 input = abs(port->device.mouse.delta_x) >> 4 & 0xF; 1250 input = port->device.mouse.delta_x >> 4 & 0xF;
1251 break; 1251 break;
1252 case 6: 1252 case 6:
1253 input = abs(port->device.mouse.delta_x) & 0xF; 1253 input = port->device.mouse.delta_x & 0xF;
1254 break; 1254 break;
1255 case 7: 1255 case 7:
1256 input = abs(port->device.mouse.delta_y) >> 4 & 0xF; 1256 input = port->device.mouse.delta_y >> 4 & 0xF;
1257 break; 1257 break;
1258 case 8: 1258 case 8:
1259 input = abs(port->device.mouse.delta_y) & 0xF; 1259 input = port->device.mouse.delta_y & 0xF;
1260 //need to figure out when this actually happens 1260 //need to figure out when this actually happens
1261 port->device.mouse.last_read_x = port->device.mouse.cur_x; 1261 port->device.mouse.last_read_x = port->device.mouse.cur_x;
1262 port->device.mouse.last_read_y = port->device.mouse.cur_y; 1262 port->device.mouse.last_read_y = port->device.mouse.cur_y;
1263 break; 1263 break;
1264 default: 1264 default: