diff options
Diffstat (limited to 'src/heretic/i_cyber.c')
| -rw-r--r-- | src/heretic/i_cyber.c | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/src/heretic/i_cyber.c b/src/heretic/i_cyber.c new file mode 100644 index 00000000..38aee9f8 --- /dev/null +++ b/src/heretic/i_cyber.c @@ -0,0 +1,259 @@ +// I_cyber.c
+
+#include <dos.h>
+#include <stdlib.h>
+
+
+/*
+====================================================
+
+Doom control structure
+
+The keybaord and joystick will add to the values set by the cyberman,
+to a maximum of 0x19000 for forwardmove and sidemove. Angleturn is
+not bounded at all.
+
+parm normal fast
+----- ------ ----
+forwardmove 0xc800 0x19000
+sidemove 0xc000 0x14000
+angleturn 0x2800000 0x5000000
+
+The keyboard and joystick have a 1/3 second slow turn of 0x1400000 under
+normal speed to help aiming.
+
+
+
+====================================================
+*/
+
+typedef struct
+{
+ char forwardmove; // *2048 for move
+ char sidemove; // *2048 for move
+ short angleturn; // <<16 for angle delta
+ short consistancy; // checks for net game
+ unsigned char chatchar;
+ unsigned char buttons;
+} ticcmd_t;
+
+#define BT_ATTACK 1
+#define BT_USE 2
+#define BT_CHANGE 4 // if true, the next 3 bits hold weapon num
+#define BT_WEAPONMASK (8+16+32)
+#define BT_WEAPONSHIFT 3
+
+
+
+//==================================================
+//
+// CyberMan detection and usage info
+//
+//==================================================
+#define DPMI_INT 0x31
+#define MOUSE_INT 0x33
+
+#define DOSMEMSIZE 64 // enough for any SWIFT structure
+
+typedef struct {
+ short x;
+ short y;
+ short z;
+ short pitch;
+ short roll;
+ short yaw;
+ short buttons;
+} SWIFT_3DStatus;
+
+// DPMI real mode interrupt structure
+static struct rminfo {
+ long EDI;
+ long ESI;
+ long EBP;
+ long reserved_by_system;
+ long EBX;
+ long EDX;
+ long ECX;
+ long EAX;
+ short flags;
+ short ES,DS,FS,GS,IP,CS,SP,SS;
+} RMI;
+
+typedef struct {
+ unsigned char deviceType;
+ unsigned char majorVersion;
+ unsigned char minorVersion;
+ unsigned char absRelFlags;
+ unsigned char centeringFlags;
+ unsigned char reserved[5];
+} StaticDeviceData;
+
+// values for deviceType:
+#define DEVTYPE_CYBERMAN 1
+
+short selector;
+unsigned short segment; // segment of DOS memory block
+SWIFT_3DStatus *cyberstat;
+int isCyberPresent; // is CyberMan present?
+
+
+static union REGS regs;
+static struct SREGS sregs;
+
+
+extern int mousepresent;
+
+//===========================================================
+//
+// I_StartupCyberMan
+//
+// If a cyberman is present, init it and set isCyberPresent to 1
+//===========================================================
+void I_StartupCyberMan(void)
+{
+ StaticDeviceData *pbuf;
+ int success = 0;
+
+ isCyberPresent = 0;
+
+ cyberstat = (SWIFT_3DStatus *)I_AllocLow (DOSMEMSIZE);
+ segment = (int)cyberstat>>4;
+
+ pbuf = (StaticDeviceData *)cyberstat;
+ memset(pbuf, 0, sizeof (StaticDeviceData));
+
+ // Use DPMI call 300h to issue mouse interrupt
+ memset(&RMI, 0, sizeof(RMI));
+ RMI.EAX = 0x53C1; // SWIFT: Get Static Device Data
+ RMI.ES = segment;
+ RMI.EDX = 0;
+ memset(&sregs, 0, sizeof (sregs));
+ regs.w.ax = 0x0300; // DPMI: simulate interrupt
+ regs.w.bx = MOUSE_INT;
+ regs.w.cx = 0;
+ regs.x.edi = FP_OFF(&RMI);
+ sregs.es = FP_SEG(&RMI);
+ int386x( DPMI_INT, ®s, ®s, &sregs );
+
+ if ((short)RMI.EAX != 1)
+ {
+ // SWIFT functions not present
+ tprintf("CyberMan: Wrong mouse driver - no SWIFT support (AX=%04x).\n",
+ (unsigned)(short)RMI.EAX);
+ }
+ else
+ if (pbuf->deviceType != DEVTYPE_CYBERMAN)
+ {
+ // no SWIFT device, or not CyberMan
+ if (pbuf->deviceType == 0)
+ {
+ tprintf("CyberMan: no SWIFT device connected.\n");
+ }
+ else
+ {
+ tprintf("CyberMan: SWIFT device is not a CyberMan! (type=%d)\n",
+ pbuf->deviceType);
+ }
+ }
+ else
+ {
+ tprintf("CyberMan: CyberMan %d.%02d connected.\n",
+ pbuf->majorVersion, pbuf->minorVersion);
+ isCyberPresent = 1;
+ mousepresent = 0;
+ }
+}
+
+
+
+/*
+===============
+=
+= I_ReadCyberCmds
+=
+===============
+*/
+
+
+int oldpos;
+
+void I_ReadCyberCmd (ticcmd_t *cmd)
+{
+ int delta;
+
+ // Use DPMI call 300h to issue mouse interrupt
+ memset(&RMI, 0, sizeof(RMI));
+ RMI.EAX = 0x5301; // SWIFT: Get Position and Buttons
+ RMI.ES = segment;
+ RMI.EDX = 0;
+ memset(&sregs, 0, sizeof (sregs));
+ regs.w.ax = 0x0300; // DPMI: simulate interrupt
+ regs.w.bx = MOUSE_INT;
+ regs.w.cx = 0;
+ regs.x.edi = FP_OFF(&RMI);
+ sregs.es = FP_SEG(&RMI);
+ int386x( DPMI_INT, ®s, ®s, &sregs );
+
+ if (cyberstat->y < -7900)
+ cmd->forwardmove = 0xc800/2048;
+ else if (cyberstat->y > 7900)
+ cmd->forwardmove = -0xc800/2048;
+
+ if (cyberstat->buttons & 4)
+ cmd->buttons |= BT_ATTACK;
+ if (cyberstat->buttons & 2)
+ cmd->buttons |= BT_USE;
+
+ delta = cyberstat->x - oldpos;
+ oldpos = cyberstat->x;
+
+ if (cyberstat->buttons & 1)
+ { // strafe
+ if (cyberstat->x < -7900)
+ cmd->sidemove = -0xc800/2048;
+ else if (cyberstat->x > 7900)
+ cmd->sidemove = 0xc800/2048;
+ else
+ cmd->sidemove = delta*40/2048;
+ }
+ else
+ {
+ if (cyberstat->x < -7900)
+ cmd->angleturn = 0x280;
+ else if (cyberstat->x > 7900)
+ cmd->angleturn = -0x280;
+ else
+ cmd->angleturn = -delta*0xa/16;
+
+ }
+
+}
+
+
+void I_Tactile (int on, int off, int total)
+{
+ if (!isCyberPresent)
+ return;
+
+ on /= 5;
+ off /= 5;
+ total /= 40;
+ if (on > 255)
+ on = 255;
+ if (off > 255)
+ off = 255;
+ if (total > 255)
+ total = 255;
+
+ memset(&RMI, 0, sizeof(RMI));
+ RMI.EAX = 0x5330; // SWIFT: Get Position and Buttons
+ RMI.EBX = on*256+off;
+ RMI.ECX = total;
+ memset(&sregs, 0, sizeof (sregs));
+ regs.w.ax = 0x0300; // DPMI: simulate interrupt
+ regs.w.bx = MOUSE_INT;
+ regs.w.cx = 0;
+ regs.x.edi = FP_OFF(&RMI);
+ sregs.es = FP_SEG(&RMI);
+ int386x( DPMI_INT, ®s, ®s, &sregs );
+}
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