Adding the release of the DOOM IPX driver.

Author: Travis Bradshaw

ipx/DOOMNET.C

@@ -0,0 +1,73 @@
+//#define DOOM2
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <process.h>
+#include <conio.h>
+#include <dos.h>
+
+#include "doomnet.h"
+//#include "ipxstr.h"
+#include "ipx_frch.h"		// FRENCH VERSION
+
+doomcom_t doomcom;
+int            vectorishooked;
+void interrupt (*olddoomvect) (void);
+
+
+
+/*
+=============
+=
+= LaunchDOOM
+=
+These fields in doomcom should be filled in before calling:
+
+     short     numnodes;      // console is allways node 0
+     short     ticdup;             // 1 = no duplication, 2-5 = dup for 
+slow nets
+     short     extratics;          // 1 = send a backup tic in every 
+packet
+
+	 short     consoleplayer; // 0-3 = player number
+	 short     numplayers;         // 1-4
+	 short     angleoffset;   // 1 = left, 0 = center, -1 = right
+	 short     drone;              // 1 = drone
+=============
+*/
+
+void LaunchDOOM (void)
+{
+	 char *newargs[99];
+	 char adrstring[10];
+	 long      flatadr;
+
+// prepare for DOOM
+	 doomcom.id = DOOMCOM_ID;
+
+// hook the interrupt vector
+	 olddoomvect = getvect (doomcom.intnum);
+     setvect (doomcom.intnum,(void interrupt (*)(void))MK_FP(_CS, 
+(int)NetISR));
+     vectorishooked = 1;
+
+// build the argument list for DOOM, adding a -net &doomcom
+     memcpy (newargs, _argv, (_argc+1)*2);
+	 newargs[_argc] = "-net";
+	 flatadr = (long)_DS*16 + (unsigned)&doomcom;
+	 sprintf (adrstring,"%lu",flatadr);
+	 newargs[_argc+1] = adrstring;
+	 newargs[_argc+2] = NULL;
+
+	 if (!access("doom2.exe",0))
+		spawnv  (P_WAIT, "doom2", newargs);
+	 else
+		spawnv  (P_WAIT, "doom", newargs);
+
+	 #ifdef DOOM2
+	 printf (STR_RETURNED"\n");
+	 #else
+	 printf ("Returned from DOOM\n");
+	 #endif
+}

ipx/DOOMNET.H

@@ -0,0 +1,58 @@
+// doomnet.h
+
+#define PEL_WRITE_ADR   0x3c8
+#define PEL_DATA        0x3c9
+
+#define I_ColorBlack(r,g,b) {outp(PEL_WRITE_ADR,0);outp(PEL_DATA,r);outp(PEL_DATA,g);outp(PEL_DATA,b);};
+
+
+
+#define   MAXNETNODES         8              // max computers in a game
+#define   MAXPLAYERS          4              // 4 players max + drones
+
+
+#define   CMD_SEND  1
+#define   CMD_GET        2
+
+#define   DOOMCOM_ID          0x12345678l
+
+typedef struct
+{
+     long id;
+     short     intnum;             // DOOM executes an int to send commands
+
+// communication between DOOM and the driver
+     short     command;       // CMD_SEND or CMD_GET
+     short     remotenode;         // dest for send, set by get (-1 = no packet)
+     short     datalength;         // bytes in doomdata to be sent / bytes read
+
+// info common to all nodes
+     short     numnodes;      // console is allways node 0
+     short     ticdup;             // 1 = no duplication, 2-5 = dup for slow nets
+     short     extratics;          // 1 = send a backup tic in every packet
+     short     deathmatch;         // 1 = deathmatch
+     short     savegame;      // -1 = new game, 0-5 = load savegame
+     short     episode;       // 1-3
+     short     map;           // 1-9
+     short     skill;              // 1-5
+
+// info specific to this node
+     short     consoleplayer; // 0-3 = player number
+     short     numplayers;         // 1-4
+     short     angleoffset;   // 1 = left, 0 = center, -1 = right
+     short     drone;              // 1 = drone
+
+// packet data to be sent
+     char data[512];
+} doomcom_t;
+
+
+
+extern    doomcom_t doomcom;
+extern    void interrupt (*olddoomvect) (void);
+extern    int            vectorishooked;
+
+int CheckParm (char *check);
+void LaunchDOOM (void);
+void interrupt NetISR (void);
+