--- /dev/null
+/*
+ * (C) GraÅžvydas "notaz" Ignotas, 2011
+ *
+ * This work is licensed under the terms of any of these licenses
+ * (at your option):
+ * - GNU GPL, version 2 or later.
+ * - GNU LGPL, version 2.1 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include <string.h>
+#include "main.h"
+
+static unsigned char buf[8];
+
+unsigned char PADpoll_guncon(unsigned char value)
+{
+ if (CurByte == 0) {
+ CurCmd = value;
+ CurByte++;
+ return 0x63; // regardless of cmd
+ }
+
+ if (CurCmd != 0x42 || CurByte >= 8)
+ return 0xff; // verified
+
+ return buf[CurByte++];
+}
+
+unsigned char PADstartPoll_guncon(int pad)
+{
+ int x, xn = 0, y = 0, in = 0, xres = 256;
+ CurByte = 0;
+
+ buf[2] = buf[3] = 0xff;
+ pl_update_gun(&xn, &xres, &y, &in);
+
+ // while y = const + line counter, what is x?
+ // for 256 mode, hw dumped offsets x, y: 0x5a, 0x20
+ //x = 0x5a + (356 * xn >> 10);
+ x = 0x5a - (xres - 256) / 3 + (((xres - 256) / 3 + 356) * xn >> 10);
+ y = 0x20 + y;
+
+ if (in & GUNIN_TRIGGER)
+ buf[3] &= ~0x20;
+ if (in & GUNIN_BTNA)
+ buf[2] &= ~0x08;
+ if (in & GUNIN_BTNB)
+ buf[3] &= ~0x40;
+ if (in & GUNIN_TRIGGER2) {
+ buf[3] &= ~0x20;
+ x = 1;
+ y = 10;
+ }
+ buf[4] = x;
+ buf[5] = x >> 8;
+ buf[6] = y;
+ buf[7] = y >> 8;
+
+ return 0xff;
+}
+
+void guncon_init(void)
+{
+ memset(buf, 0xff, sizeof(buf));
+ buf[1] = 0x5a;
+}
+