Added -save switch: can now load player cell / pos from savegames

git-svn-id: https://openmw.svn.sourceforge.net/svnroot/openmw/trunk@137 ea6a568a-9f4f-0410-981a-c910a81bb256

esm/esmmain.d

@@ -25,6 +25,8 @@ module esm.esmmain;
 
 public import esm.records;
 
+import ogre.ogre;
+
 /* This file is the main module for loading from ESM, ESP and ESS
    files. It stores all the data in the appropriate data structures
    for later referal. TODO: Put this in a class or whatever? Nah, we
@@ -115,11 +117,21 @@ void loadTESFiles(char[][] files)
   hyperlinks.sort();
 }
 
-// Load a TES savegame file (.ess). Currently VERY limited, only reads
-// the header.
-void importSavegame(char[] file)
+// Contains the small bits of information that we currently extract
+// from savegames.
+struct PlayerSaveInfo
+{
+  char[] cellName;
+  char[] playerName;
+  Placement pos;
+}
+
+// Load a TES savegame file (.ess). Currently VERY limited, reads the
+// player's cell name and position
+PlayerSaveInfo importSavegame(char[] file)
 {
-  writefln("Loading savegame %s", file);
+  PlayerSaveInfo pi;
+
   esFile.open(file, esmRegion);
   scope(exit) esFile.close();
 
@@ -128,14 +140,28 @@ void importSavegame(char[] file)
 
   with(esFile.saveData)
     {
-      writefln("Floats:");
-      foreach(i, f; unknown)
-        writefln("  %s: %s", i, f);
-
-      writefln("Cell name: ", stripz(cell));
+      pi.cellName = stripz(cell);
+      pi.playerName = stripz(player);
+    }
 
-      writefln("Strange value: ", unk2);
-      writefln("Player name: ", stripz(player));
+  with(esFile)
+    {
+      while(hasMoreRecs())
+        {
+          if(isNextHRec("REFR"))
+            {
+              while(hasMoreSubs())
+                {
+                  getSubName();
+                  if(retSubName() == "DATA")
+                    readHExact(&pi.pos, pi.pos.sizeof);
+                  else
+                    skipHSub();
+                }
+            }
+          else
+            skipHRecord();
+        }
     }
-  writefln();
+  return pi;
 }

esm/filereader.d

@@ -174,7 +174,7 @@ struct TES3File
   // name.
   struct _saveData
   {
-    float[6] unknown; // 24 bytes
+    float[6] unknown;
     char[64] cell; // Cell name
     float unk2; // Unknown value
     char[32] player; // Player name
@@ -534,13 +534,26 @@ struct TES3File
   // Size of current sub record
   uint getSubSize() { return leftSub; }
 
-  // Skip the rest of this record
+  // Skip the rest of this record. Assumes the name and header have
+  // already been read
   void skipRecord()
     {
       file.seekCur(leftRec);
       leftRec = 0;
     }
 
+  // Skip an entire record
+  void skipHRecord()
+  {
+    if(!leftFile) return;
+
+    uint flags;
+
+    getRecName();
+    getRecHeader(flags);
+    skipRecord();
+  }
+
   // Skip current sub record and return size
   uint skipHSub()
     {

esm/loadnpc.d

@@ -160,7 +160,7 @@ struct NPC
 	readHExact(&AI, AI.sizeof);
 	hasAI = true;
       }
-      else hasAI = false;
+    else hasAI = false;
 
     skipRecord();
 

openmw.d

@@ -38,6 +38,7 @@ import bullet.bullet;
 import scene.celldata;
 import scene.soundlist;
 import scene.gamesettings;
+import scene.player;
 
 import core.resource;
 import core.memory;
@@ -90,6 +91,8 @@ void main(char[][] args)
   bool debugOut = false;
   bool extTest = false;
   bool doGen = false;
+  bool nextSave = false;
+  bool loadSave = false;
 
   // Some examples to try:
   //
@@ -107,6 +110,9 @@ void main(char[][] args)
   // Cells to load
   char[][] cells;
 
+  // Savegame to load
+  char[] savefile;
+
   foreach(char[] a; args[1..$])
     if(a == "-n") render = false;
     else if(a == "-ex") extTest = true;
@@ -115,6 +121,7 @@ void main(char[][] args)
     else if(a == "-rk") resetKeys = true;
     else if(a == "-oc") showOgreFlag = true;
     else if(a == "-ns") config.noSound = true;
+    else if(a == "-save") nextSave = true;
     else if(a == "-debug")
       {
         // Enable Monster debug output
@@ -123,6 +130,11 @@ void main(char[][] args)
         // Tell OGRE to do the same later on
         debugOut = true;
       }
+    else if(nextSave)
+      {
+        savefile = a;
+        nextSave = false;
+      }
     else cells ~= a;
 
   if(cells.length > 1)
@@ -142,6 +154,7 @@ void main(char[][] args)
       writefln("    -oc           Show the Ogre config dialogue");
       writefln("    -ns           Completely disable sound");
       writefln("    -debug        Print debug information");
+      writefln("    -save <file>  Load cell/pos from savegame");
       writefln("    -h            Show this help");
       writefln("");
       writefln("Specifying more than one cell implies -n");
@@ -156,11 +169,28 @@ void main(char[][] args)
   initializeMemoryRegions();
   initMonsterScripts();
 
-  /*
-  importSavegame("data/quiksave.ess");
-  importSavegame("data/Perm1hal0000.ess");
-  return;
-  */
+  // This is getting increasingly hackish, but this entire engine
+  // design is now quickly outgrowing its usefulness, and a rewrite is
+  // coming soon anyway.
+  PlayerSaveInfo pi;
+  if(savefile != "")
+    {
+      if(cells.length)
+        {
+          writefln("Please don't specify both a savegame file (%s) and cell names (%s)", savefile, cells);
+          return;
+        }
+
+      loadSave = true;
+      writefln("Loading savegame %s", savefile);
+      pi = importSavegame(savefile);
+      writefln("    Player name: %s", pi.playerName);
+      writefln("    Cell name:   %s", pi.cellName);
+      writefln("    Pos:         %s", pi.pos.position);
+      writefln("    Rot:         %s", pi.pos.rotation);
+
+      cells = [pi.cellName];
+    }
 
   config.initialize(resetKeys);
   scope(exit) config.writeConfig();
@@ -181,7 +211,7 @@ void main(char[][] args)
     if(config.defaultCell.length)
       cells ~= config.defaultCell;
 
-  if(cells.length == 1)
+  if(cells.length == 1 && !loadSave)
     config.defaultCell = cells[0];
 
   if(cells.length == 0)
@@ -218,6 +248,10 @@ Perhaps this cell does not exist in your Morrowind language version?
 Try specifying another cell name on the command line, or edit openmw.ini.");
 	  return;
 	}
+
+      // If we're loading from save, override the player position
+      if(loadSave)
+        *playerData.position = pi.pos;
     }
 
   // Simple safety hack