More updates on Bullet code and other things

git-svn-id: https://openmw.svn.sourceforge.net/svnroot/openmw/trunk@49 ea6a568a-9f4f-0410-981a-c910a81bb256

README.txt

@@ -122,6 +122,9 @@ Changelog:
 - working on collision detection with Bullet
 - working on fixing sound issues for windows (running out of sound
   resources, music playback doesn't good)
+- new key bindings:
+  t - toggle physics mode (walking, flying, ghost)
+  n - nighteye, toggle full ambient light
 - added build files for CMake (with CMakeD) and Code::Blocks (neither
   are tested yet)
 - various minor changes and updates

bullet/bindings.d

@@ -35,6 +35,9 @@ extern(C):
 // Initialize the dynamic world. Returns non-zero if an error occurs.
 int bullet_init();
 
+// Switch to the next physics mode
+void bullet_nextMode();
+
 // Warp the player to a specific location.
 void bullet_movePlayer(float x, float y, float z);
 

bullet/cpp_bullet.cpp

@@ -64,6 +64,16 @@ btTriangleIndexVertexArray *g_currentMesh;
 btHashedOverlappingPairCache* g_pairCache;
 CustomOverlappingPairCallback *g_customPairCallback;
 
+// Three physics modes: walking (with gravity and collision), flying
+// (collision but no gravity) and ghost mode (fly through walls)
+enum
+  {
+    PHYS_WALK,
+    PHYS_FLY,
+    PHYS_GHOST
+  };
+int g_physMode;
+
 // Include the player physics
 #include "cpp_player.cpp"
 
@@ -181,10 +191,34 @@ extern "C" int32_t bullet_init()
   // Make sure this is zero at startup
   g_currentMesh = NULL;
 
+  // Start out walking
+  g_physMode = PHYS_WALK;
+
   // Success!
   return 0;
 }
 
+// Switch to the next physics mode
+extern "C" void bullet_nextMode()
+{
+  g_physMode++;
+  if(g_physMode > PHYS_GHOST)
+    g_physMode = PHYS_WALK;
+
+  switch(g_physMode)
+    {
+    case PHYS_WALK:
+      cout << "Entering walking mode\n";
+      break;
+    case PHYS_FLY:
+      cout << "Entering flying mode\n";
+      break;
+    case PHYS_GHOST:
+      cout << "Entering ghost mode\n";
+      break;
+    }
+}
+
 // Warp the player to a specific location. We do not bother setting
 // rotation, since it's completely irrelevant for collision detection.
 extern "C" void bullet_movePlayer(float x, float y, float z)
@@ -285,6 +319,8 @@ extern "C" void bullet_insertStatic(btCollisionShape *shape,
                                     float *quat,
                                     float scale)
 {
+  // TODO: Good test case for scaled meshes: Aharunartus, some of the
+  // stairs inside the cavern currently don't collide
   if(scale != 1.0)
     {
       cout << "WARNING: Cannot scale collision meshes yet (wanted "

bullet/cpp_player.cpp

@@ -232,8 +232,6 @@ bool recoverFromPenetration()
                                           g_dynamicsWorld->getDispatchInfo(),
                                           g_dispatcher);
 
-  g_playerPosition = g_playerObject->getWorldTransform().getOrigin();
-	
   btScalar maxPen = 0.0;
   for (int i = 0; i < g_pairCache->getNumOverlappingPairs(); i++)
     {
@@ -285,8 +283,24 @@ bool recoverFromPenetration()
 // main function is responsible for player movement.
 void playerStepCallback(btDynamicsWorld* dynamicsWorld, btScalar timeStep)
 {
-  // Before moving, recover from current penetrations
+  // The walking direction is set from D code each frame, and the
+  // final player position is read back from D code after the
+  // simulation.
+  btVector3 walkStep = g_walkDirection * timeStep;
 
+  // Get the player position
+  g_playerPosition = g_playerObject->getWorldTransform().getOrigin();
+
+  if(g_physMode == PHYS_GHOST)
+    {
+      // Ghost mode - just move, no collision
+      g_playerPosition += walkStep;
+    }
+  else
+    {
+      // Collision detection is active
+
+      // Before moving, recover from current penetrations
       int numPenetrationLoops = 0;
       g_touchingContact = false;
       while (recoverFromPenetration())
@@ -299,27 +313,26 @@ void playerStepCallback(btDynamicsWorld* dynamicsWorld, btScalar timeStep)
             break;
         }
 
-  // Get the player position
-  btTransform xform;
-  xform = g_playerObject->getWorldTransform ();
-  g_playerPosition = xform.getOrigin();
+      // recoverFromPenetration updates g_playerPosition and the
+      // collision mesh, so they are still in sync at this point
 
-  // Next, do the walk.
-
-  // TODO: Walking direction should be set from D code, and the final
-  // position should be retrieved back from C++. The walking direction
-  // always reflects the intentional action of an agent (ie. the
-  // player or the AI), but the end result comes from collision and
-  // physics.
-
-  btVector3 walkStep = g_walkDirection * timeStep;
+      // Next, do the walk. The following functions only updates
+      // g_playerPosition, they do not move the collision object.
 
+      if(g_physMode == PHYS_WALK)
+        {
           stepUp();
           stepForward(walkStep);
           stepDown(timeStep);
+        }
+      else if(g_physMode == PHYS_FLY)
+        stepForward(walkStep);
+      else
+        cout << "WARNING: Unknown physics mode " << g_physMode << "!\n";
+    }
 
-  // Move the player (but keep rotation)
-  xform = g_playerObject->getWorldTransform ();
+  // Move the player collision mesh
+  btTransform xform = g_playerObject->getWorldTransform ();
   xform.setOrigin (g_playerPosition);
   g_playerObject->setWorldTransform (xform);
 }

core/config.d

@@ -240,6 +240,8 @@ struct ConfigManager
         bind(Keys.Fullscreen, KC.F);
 
 	bind(Keys.ToggleBattleMusic, KC.SPACE);
+        bind(Keys.PhysMode, KC.T);
+        bind(Keys.Nighteye, KC.N);
         bind(Keys.Debug, KC.G);
 
 	bind(Keys.Pause, KC.PAUSE, KC.P);

input/events.d

@@ -221,6 +221,9 @@ extern(C) void d_handleKey(KC keycode, dchar text = 0)
       case Keys.Mute: toggleMute(); break;
       case Keys.Fullscreen: toggleFullscreen(); break;
 
+      case Keys.PhysMode: bullet_nextMode(); break;
+      case Keys.Nighteye: ogre_toggleLight(); break;
+
       case Keys.Debug: ogre_debug(0); break;
       case Keys.ScreenShot: takeScreenShot(); break;
       case Keys.Pause: togglePause(); break;

input/keys.d

@@ -65,6 +65,8 @@ enum Keys
     // These will not be part of the finished product
     Fullscreen,
     ToggleBattleMusic,
+    PhysMode, // Toggle physics mode between walking, flying and ghost
+    Nighteye, // Full ambient lighting
     Debug,
 
     // Misc
@@ -248,6 +250,8 @@ struct KeyBindings
 
     keyToString[Keys.Fullscreen] = "Toggle Fullscreen Mode";
     keyToString[Keys.ToggleBattleMusic] = "Toggle Battle Music";
+    keyToString[Keys.PhysMode] = "Toggle Physics Mode";
+    keyToString[Keys.Nighteye] = "Toggle Nighteye";
     keyToString[Keys.Debug] = "OGRE Test Action";
 
     keyToString[Keys.Pause] = "Pause";

nif/controlled.d

@@ -49,11 +49,10 @@ abstract class Controlled : Extra
 // Record with name and controller/extra data link
 abstract class Named : Controlled
 {
+  // Name of this object. This is used to refer to the object from .kf
+  // files.
   char[] name;
 
-  //Extra extra;
-  //Controller controller;
-
  override:
   char[] toString()
     {
@@ -68,23 +67,8 @@ abstract class Named : Controlled
       //super.read(f);
       name = nifFile.getString();
       debug(verbose) writefln("Name: %s", name);
-      /*
-      debug(verbose) writef("Extra ");
-      getIndex(f);
-      debug(verbose) writef("Controller ");
-      getIndex(f);
-      */
       super.read();
     }
-
-  /*
-  void sortOut(Record[] list)
-    {
-      super.sortOut(list);
-      extra = lookup!(Extra)(list);
-      controller = lookup!(Controller)(list);
-    }
-  */
 }
 
 class NiSequenceStreamHelper : Named {}

nif/data.d

@@ -147,6 +147,15 @@ class ShapeData : Record
       if(nifFile.getInt != 0)
 	{
 	  if(uvs == 0) nifFile.warn("Empty UV list");
+
+          // Only the 6 first bits are used as a count, the rest are
+          // (unknown) flags.
+          if(uvs > 0b111111)
+            {
+              nifFile.warn("UV count contains (unknown) flags");
+              uvs = uvs & 0b111111;
+            }
+
 	  uvlist = nifFile.getArraySize!(float)(uvs*verts*2);
 	}
       else if(uvs != 0) nifFile.warn("UV list was unexpectedly missing");
@@ -528,6 +537,7 @@ class NiTriShapeData : ShapeData
       debug(verbose) writefln("Number of faces: ", tris);
       if(tris)
 	{
+          // Must have three times as many vertices as triangles
 	  int cnt = nifFile.getIntIs(tris*3);
 	  triangles = nifFile.getArraySize!(short)(cnt);
 	}

ogre/bindings.d

@@ -70,6 +70,9 @@ void ogre_setFog(float rf, float gf, float bf,
 // Create a simple sky dome
 int ogre_makeSky();
 
+// Toggle full ambient lighting on and off
+void ogre_toggleLight();
+
 // Enter main rendering loop
 void ogre_startRendering();
 

ogre/cpp_framelistener.cpp

@@ -121,6 +121,8 @@ extern "C" void ogre_rotateCamera(float x, float y)
 {
   mCamera->yaw(Degree(-x));
   mCamera->pitch(Degree(-y));
+
+  //g_light->setDirection(mCamera->getDirection());
 }
 
 // Get current camera position
@@ -154,6 +156,8 @@ extern "C" void ogre_moveCamera(float x, float y, float z)
   // is not affected by the rotation of the root node, so we must
   // transform this manually.
   mCamera->setPosition(Vector3(x,z,-y));
+
+  //g_light->setPosition(mCamera->getPosition());
 }
 
 // Rotate camera using Morrowind rotation specifiers

ogre/cpp_interface.cpp

@@ -163,7 +163,7 @@ extern "C" void ogre_initWindow()
   std::cout << "ogre_initWindow finished\n";
 }
 
-// Make a scene, set the given ambient light
+// Make a scene
 extern "C" void ogre_makeScene()
 {
   // Get the SceneManager, in this case a generic one
@@ -198,6 +198,53 @@ extern "C" void ogre_makeScene()
   SceneNode *rt = mSceneMgr->getRootSceneNode();
   root = rt->createChildSceneNode();
   root->pitch(Degree(-90));
+
+  /*
+  g_light = mSceneMgr->createLight("carry");
+  g_light->setDiffuseColour(1,0.7,0.3);
+  g_light->setAttenuation(2000, 0, 0.008, 0);
+  */
+}
+
+/*
+// Toggle carryable light
+extern "C" void ogre_toggleCarryLight()
+{
+  if(g_spotOn == 0)
+    {
+      g_light->setVisible(true);
+      g_spotOn = 1;
+    }
+  else
+    {
+      g_light->setVisible(false);
+      g_spotOn = 0;
+    }
+}
+*/
+
+// Toggle ambient light
+extern "C" void ogre_toggleLight()
+{
+  if(g_lightOn == 0)
+    {
+      std::cout << "Turning the lights up\n";
+      ColourValue half = 0.7*g_ambient + 0.3*ColourValue(1,1,1);
+      mSceneMgr->setAmbientLight(half);
+      g_lightOn = 1;
+    }
+  else if(g_lightOn == 1)
+    {
+      std::cout << "Turning the lights to full\n";
+      g_lightOn = 2;
+      mSceneMgr->setAmbientLight(ColourValue(1,1,1));
+    }
+  else
+    {
+      std::cout << "Setting lights to normal\n";
+      g_lightOn = 0;
+      mSceneMgr->setAmbientLight(g_ambient);
+    }
 }
 
 // Create a sky dome. Currently disabled since we aren't including the
@@ -217,6 +264,7 @@ extern "C" Light* ogre_attachLight(char *name, SceneNode* base,
 
   // This seems to look reasonably ok.
   l->setAttenuation(3*radius, 0, 0, 12.0/(radius*radius));
+  //l->setAttenuation(5*radius, 0, 0, 8.0/(radius*radius));
 
   // base might be null, sometimes lights don't have meshes
   if(base) base->attachObject(l);
@@ -233,8 +281,8 @@ extern "C" void ogre_toggleFullscreen()
 extern "C" void ogre_setAmbient(float r, float g, float b, // Ambient light
 			       float rs, float gs, float bs) // "Sunlight"
 {
-  ColourValue c = ColourValue(r, g, b);
-  mSceneMgr->setAmbientLight(c);
+  g_ambient = ColourValue(r, g, b);
+  mSceneMgr->setAmbientLight(g_ambient);
 
   // Create a "sun" that shines light downwards. It doesn't look
   // completely right, but leave it for now.

ogre/cpp_ogre.cpp

@@ -42,6 +42,14 @@ SceneManager *mSceneMgr;
 Camera *mCamera;
 Viewport *vp;
 
+ColourValue g_ambient;
+int g_lightOn = 0;
+
+/*
+int g_spotOn = 0;
+Light *g_light;
+*/
+
 OIS::InputManager *mInputManager;
 OIS::Mouse *mMouse;
 OIS::Keyboard *mKeyboard;

ogre/meshloader.d

@@ -102,8 +102,8 @@ struct MeshLoader
     // names later, in order to attach arms and legs on NPCs
     // etc. Always ignore transformation of the first node? This is a
     // problem, I don't know when to do this and when not to. Neither
-    // is always right. Update: It looks like we should always set
-    // noRot to false in exterior cells.
+    // is always right. Update: I originally thought noRot should be
+    // false for exteriors and true for interiors, but this isn't so.
     NodePtr node = ogre_createNode(UniqueName(data.name).ptr, &data.trafo,
 				  parent, cast(int)noRot);
 

openmw.d

@@ -308,9 +308,9 @@ void main(char[][] args)
       // Doors
       foreach(ref LiveDoor ls; cd.doors)
 	putObject(ls.m.model, &ls.base.pos, ls.base.scale);
-      // Activators
+      // Activators (including beds etc)
       foreach(ref LiveActivator ls; cd.activators)
-	putObject(ls.m.model, &ls.base.pos, ls.base.scale);
+	putObject(ls.m.model, &ls.base.pos, ls.base.scale, true);
       // Potions
       foreach(ref LivePotion ls; cd.potions)
 	putObject(ls.m.model, &ls.base.pos, ls.base.scale);

openmw.ini.win32

@@ -31,6 +31,7 @@ Decrease SFX Volume=3
 Mute Sound=m
 Toggle Fullscreen Mode=f
 Toggle Battle Music=space
+Toggle Physics Mode=t
 OGRE Test Action=g
 Pause=pause,p
 Screen Shot=print_screen
@@ -41,3 +42,6 @@ Main Volume=0.7
 Music Volume=0.5
 SFX Volume=0.5
 Enable Music=yes
+
+[Game Files]
+GameFile[0]=Morrowind.esm