Enable the Load Game menu

cgdoom/g_game.c

@@ -921,12 +921,69 @@ void G_DoWorldDone (void)
 extern boolean setsizeneeded;
 void R_ExecuteSetViewSize (void);
 
-#define VERSIONSIZE  16 
+char  savename[256];
 
+void G_LoadGame (char* name)
+{
+    CGDstrcpy (savename, name);
+    gameaction = ga_loadgame;
+}
+
+#define VERSIONSIZE  16
 
 void G_DoLoadGame (void) 
 {
-} 
+    int   length;
+    int   i;
+    int   a,b,c;
+    char  vcheck[VERSIONSIZE];
+
+    gameaction = ga_nothing;
+
+    length = M_ReadFile (savename, &savebuffer);
+    I_ReinitAfterError();
+    save_p = savebuffer + SAVESTRINGSIZE;
+
+    if (length < 0)
+      return;
+
+    // skip the description field
+    memset (vcheck,0,sizeof(vcheck));
+    sprintf (vcheck,"version %i",VERSION);
+    if (strcmp ((const char *)save_p, vcheck))
+        return;       // bad version
+    save_p += VERSIONSIZE;
+
+    gameskill = *save_p++;
+    gameepisode = *save_p++;
+    gamemap = *save_p++;
+    for (i=0 ; i<MAXPLAYERS ; i++)
+        playeringame[i] = *save_p++;
+
+    // load a base level
+    G_InitNew (gameskill, gameepisode, gamemap);
+
+    // get the times
+    a = *save_p++;
+    b = *save_p++;
+    c = *save_p++;
+    leveltime = (a<<16) + (b<<8) + c;
+
+    // dearchive all the modifications
+    P_UnArchivePlayers ();
+    P_UnArchiveWorld ();
+    P_UnArchiveThinkers ();
+    P_UnArchiveSpecials ();
+
+    if (*save_p != 0x1d)
+        I_Error ("Bad savegame");
+
+    // done
+    Z_Free (savebuffer);
+
+    if (setsizeneeded)
+        R_ExecuteSetViewSize ();
+}
 
 
 //

cgdoom/g_game.h

@@ -49,6 +49,7 @@ void G_DeferedPlayDemo (char* demo);
 void G_DoLoadGame (void);
 
 // Called by M_Responder.
+void G_LoadGame (char* name);
 void G_SaveGame (int slot, char* description);
 
 void G_TimeDemo (char* name);

cgdoom/m_menu.c

@@ -531,15 +531,10 @@ void M_DrawSaveLoadBorder(int x,int y)
 //
 void M_LoadSelect(int choice)
 {
-    (void)choice;
-/*    char    name[256];
-
-    if (M_CheckParm("-cdrom"))
-    sprintf(name,"c:\\doomdata\\"SAVEGAMENAME"%d.dsg",choice);
-    else
-    sprintf(name,SAVEGAMENAME"%d.dsg",choice);
+    char name[64];
+    sprintf(name, SAVEGAMENAME "%d.dsg", choice);
     G_LoadGame (name);
-    M_ClearMenus (); */
+    M_ClearMenus ();
 }
 
 //
@@ -547,6 +542,8 @@ void M_LoadSelect(int choice)
 //
 void M_LoadGame(int choice)
 {
+    (void)choice;
+
     if (netgame)
     {
         M_StartMessage(LOADNET,NULL,false);

cgdoom/m_misc.c

@@ -121,6 +121,45 @@ boolean M_WriteFile(char const *name, void *source, int length)
     return true;
 }
 
+//
+// M_ReadFile
+//
+int M_ReadFile(const char *name, byte **buffer)
+{
+    uint16_t fc_path[100] = u"\\\\fls0\\";
+    int j = 7;
+    int fd;
+
+    for (int i = 0; name[i]; i++)
+        fc_path[j++] = name[i];
+    fc_path[j++] = 0x0000;
+
+    fd = Bfile_OpenFile_OS(fc_path, READ, 0);
+    if (fd < 0) {
+        I_Error("Bfile_OpenFile_OS(%s): %d", name, fd);
+        return -1;
+    }
+
+    int size = Bfile_GetFileSize_OS(fd);
+    if (size <= 0) {
+        I_Error("Bfile_GetFileSize_OS(%s): %d", name, size);
+        Bfile_CloseFile_OS(fd);
+        return -1;
+    }
+
+    void *buf = Z_Malloc(size, PU_STATIC, NULL);
+    if (!buf) {
+        Bfile_CloseFile_OS(fd);
+        return -1;
+    }
+
+    Bfile_ReadFile_OS(fd, buf, size, -1);
+    Bfile_CloseFile_OS(fd);
+
+    *buffer = buf;
+    return size;
+}
+
 //
 // DEFAULTS
 //