Adding Guncon support for mouse based lightguns

diff --git a/libpcsxcore/plugins.c b/libpcsxcore/plugins.c
index af7ebed..67fe835 100644 (file)
--- a/libpcsxcore/plugins.c
+++ b/libpcsxcore/plugins.c
@@ -640,6 +640,48 @@ void _PADstartPoll(PadDataS *pad) {
             stdpar[5] = pad->rightJoyY;
             stdpar[6] = pad->leftJoyX;
             stdpar[7] = pad->leftJoyY;
+            memcpy(buf, stdpar, 8);
+            respSize = 8;
+            break;
+       case PSE_PAD_TYPE_GUNCON: // GUNCON - gun controller SLPH-00034 from Namco
+            stdpar[0] = 0x63;
+           stdpar[1] = 0x5a;
+            stdpar[2] = pad->buttonStatus & 0xff;
+            stdpar[3] = pad->buttonStatus >> 8;
+                   
+            //This code assumes an X resolution of 256 and a Y resolution of 240
+           int xres = 256;
+           int yres = 240;
+           
+           //The code wants an input range for x and y of 0-1023 we passed in -32767 -> 32767 
+           int absX = (pad->absoluteX / 64) + 512;
+           int absY = (pad->absoluteY / 64) + 512;
+                      
+           //Keep within limits
+           if (absX > 1023) absX = 1023;
+           if (absX < 0) absX = 0;
+           if (absY > 1023) absY = 1023;
+           if (absY < 0) absY = 0;
+                   
+           stdpar[4] = 0x5a - (xres - 256) / 3 + (((xres - 256) / 3 + 356) * absX >> 10);      
+           stdpar[5] = (0x5a - (xres - 256) / 3 + (((xres - 256) / 3 + 356) * absX >> 10)) >> 8;
+           stdpar[6] = 0x20 + (yres * absY >> 10);
+           stdpar[7] = (0x20 + (yres * absY >> 10)) >> 8;
+                   
+           //Offscreen - Point at the side of the screen so PSX thinks you are pointing offscreen
+           //Required as a mouse can't be offscreen
+           //Coordinates X=0001h, Y=000Ah indicates "no light"
+           //This will mean you cannot shoot the very each of the screen
+            //ToDo read offscreen range from settings if useful to change
+           int OffscreenRange = 2;
+           if (absX < (OffscreenRange) || absX > (1023 - OffscreenRange) || absY < (OffscreenRange) || absY > (1023 - OffscreenRange))
+           {
+               stdpar[4] = 0x01;
+               stdpar[5] = 0x00;
+               stdpar[6] = 0x0A;
+               stdpar[7] = 0x00;           
+           }
+                   
             memcpy(buf, stdpar, 8);
             respSize = 8;
             break;