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- // I_cyber.c
-
- #include <dos.h>
- #include <stdlib.h>
- #include <string.h>
- #include "st_start.h" // For ST_Message()
-
-
- // Prototypes
- unsigned char *I_AllocLow (int length);
-
-
- /*
- ====================================================
-
- 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.
-
-
-
- ====================================================
- */
- /* old ticcmd_t
- 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;
- */
- // ticcmd_t as it appears in h2def.h
- typedef struct
- {
- char forwardmove;
- char sidemove;
- short angleturn;
- short consistancy;
- unsigned char chatchar;
- unsigned char buttons;
- unsigned char lookfly;
- unsigned char arti;
- }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;
-
- ST_Message(" CyberMan: ");
- 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
- ST_Message("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)
- {
- ST_Message("no SWIFT device connected.\n");
- }
- else
- {
- ST_Message("SWIFT device is not a CyberMan! (type=%d)\n",
- pbuf->deviceType);
- }
- }
- else
- {
- ST_Message("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 );
- }
-