Added missing files

src/characters/character.cpp

@@ -0,0 +1,366 @@
+#include <iostream>
+#include <Ogre.h>
+#include <OgreBullet.h>
+#include "BulletCollision/CollisionDispatch/btGhostObject.h"
+#include "LinearMath/btTransform.h"
+#include "character.h"
+
+#define RUN_SPEED 17 // character running speed in units per second
+#define TURN_SPEED 500.0f // character turning in degrees per second
+#define ANIM_FADE_SPEED \
+	7.5f // animation crossfade speed in % of full weight per second
+
+Character::Character(Ogre::SceneManager *scnMgr, const Ogre::String &model,
+		     Ogre::Bullet::DynamicsWorld *world)
+	: mModelName(model)
+	, mScnMgr(scnMgr)
+	, mPivotPitch(0)
+	, mVerticalVelocity(0)
+	, mAnimID(ANIM_NONE)
+	, mRunning(false)
+	, mCollisionShape(nullptr)
+	, mGhostObject(nullptr)
+	, mWorld(world)
+	, mGoalDirection(0, 0, 0)
+{
+	setupBody();
+	setupAnimations();
+}
+
+Character::~Character()
+{
+}
+
+bool Character::frameStarted(const Ogre::FrameEvent &evt)
+{
+	return true;
+}
+
+bool Character::frameRenderingQueued(const Ogre::FrameEvent &evt)
+{
+	updateBody(evt.timeSinceLastFrame);
+	updateAnimations(evt.timeSinceLastFrame);
+	if (evt.timeSinceLastFrame > 0)
+		updateRootMotion(evt.timeSinceLastFrame);
+	return true;
+}
+
+bool Character::frameEnded(const Ogre::FrameEvent &evt)
+{
+	return true;
+}
+
+void Character::setupBody()
+{
+	mBodyEnt = mScnMgr->createEntity(mModelName);
+	mBodyNode = mScnMgr->getRootSceneNode()->createChildSceneNode();
+	mBodyNode->attachObject(mBodyEnt);
+	mSkeleton = mBodyEnt->getSkeleton();
+	// mRigidBody = world->addCharacter(mBodyEnt, 0);
+	// mCollisionShape = static_cast<btCompoundShape *>(mRigidBody->getCollisionShape());
+	mGhostObject = new btPairCachingGhostObject();
+	mCollisionShape = new btCompoundShape;
+	mGhostObject->setCollisionShape(mCollisionShape);
+
+	{
+		btVector3 inertia(0, 0, 0);
+		//        mCollisionShape = new btCompoundShape();
+		btScalar height = 1.0f;
+		btScalar radius = 0.3f;
+		btCapsuleShape *shape =
+			new btCapsuleShape(radius, 2 * height - 2 * radius);
+		btTransform transform;
+		transform.setIdentity();
+		transform.setOrigin(btVector3(0, 1, 0));
+		static_cast<btCompoundShape *>(mCollisionShape)
+			->addChildShape(transform, shape);
+		btScalar masses[1] = { 0 };
+		btTransform principal;
+		static_cast<btCompoundShape *>(mCollisionShape)
+			->calculatePrincipalAxisTransform(masses, principal,
+							  inertia);
+	}
+	mGhostObject->setCollisionFlags(
+		btCollisionObject::CF_KINEMATIC_OBJECT |
+		btCollisionObject::CF_NO_CONTACT_RESPONSE);
+	mGhostObject->setActivationState(DISABLE_DEACTIVATION);
+	Ogre::Bullet::KinematicMotionSimple *controller =
+		new Ogre::Bullet::KinematicMotionSimple(mGhostObject,
+							mBodyNode);
+	mWorld->attachCollisionObject(mGhostObject, mBodyEnt,
+				      btBroadphaseProxy::AllFilter,
+				      btBroadphaseProxy::AllFilter);
+	mWorld->getBtWorld()->addAction(controller);
+
+	assert(mCollisionShape);
+#if 0
+    if (mRigidBody->getMass() == 0) {
+#if 0
+        mRigidBody->setCollisionFlags(mRigidBody->getCollisionFlags()
+		    | btCollisionObject::CF_KINEMATIC_OBJECT
+		    | btCollisionObject::CF_NO_CONTACT_RESPONSE
+		    );
+#endif
+#if 0
+	mGhostObject->setWorldTransform(mRigidBody->getWorldTransform());
+	WorldData::get_singleton()->getBtWorld()
+		->getBroadphase()->getOverlappingPairCache()
+			->setInternalGhostPairCallback(new btGhostPairCallback());
+#endif
+    }
+#endif
+#if 0
+    mRigidBody->setActivationState(DISABLE_DEACTIVATION);
+#endif
+#if 0
+    {
+        Ogre::Entity *e2 = mScnMgr->createEntity("normal-male.glb");
+	Ogre::SceneNode *e2node = mScnMgr->getRootSceneNode()->createChildSceneNode();
+    	e2node->attachObject(e2);
+	mGhostObject = WorldData::get_singleton()->addGhostObject(e2, mCollisionShape);
+	mController = new btKinematicCharacterController(mGhostObject, mCollisionShape, 0.5f);
+	WorldData::get_singleton()->getBtWorld()->addAction(mController);
+    }
+#endif
+	assert(mSkeleton->hasBone("Root"));
+	mRootBone = mSkeleton->getBone("Root");
+	assert(mRootBone);
+}
+void Character::setupAnimations()
+{
+	int i, j;
+	mSkeleton->setBlendMode(Ogre::ANIMBLEND_CUMULATIVE);
+	Ogre::String animNames[NUM_ANIMS] = { "idle", "walking", "running" };
+	for (i = 0; i < NUM_ANIMS; i++) {
+		mAnims[i] = mBodyEnt->getAnimationState(animNames[i]);
+		mAnims[i]->setLoop(true);
+		mAnims[i]->setEnabled(true);
+		mAnims[i]->setWeight(0);
+		mFadingIn[i] = false;
+		mFadingOut[i] = false;
+		mSkelAnimations[i] = mSkeleton->getAnimation(animNames[i]);
+		for (const auto &it : mSkelAnimations[i]->_getNodeTrackList()) {
+			Ogre::NodeAnimationTrack *track = it.second;
+			Ogre::String trackName =
+				track->getAssociatedNode()->getName();
+			if (trackName == "mixamorig:Hips") {
+				mHipsTracks[i] = track;
+			} else if (trackName == "Root") {
+				mRootTracks[i] = track;
+				//				mRootTracks[i]->removeAllKeyFrames();
+			}
+		}
+		Ogre::Vector3 delta = Ogre::Vector3::ZERO;
+		Ogre::Vector3 motion = Ogre::Vector3::ZERO;
+		for (j = 0; j < mRootTracks[i]->getNumKeyFrames(); j++) {
+			Ogre::Vector3 trans = mRootTracks[i]
+						      ->getNodeKeyFrame(j)
+						      ->getTranslate();
+			if (j == 0)
+				delta = trans;
+			else
+				delta = trans - motion;
+			mRootTracks[i]->getNodeKeyFrame(j)->setTranslate(delta);
+			motion = trans;
+		}
+	}
+#if 0
+	for(i = 0; i < NUM_ANIMS - 1; i++) {
+		// need to cache
+		int j;
+		Ogre::String animName = mAnims[i]->getAnimationName();
+		Ogre::Animation *anim = mSkeleton->getAnimation(animName);
+		Ogre::NodeAnimationTrack *hips_track = nullptr, *root_track = nullptr;
+		Ogre::Node *root_node = nullptr;
+		for (const auto& it : anim->_getNodeTrackList()) {
+			Ogre::NodeAnimationTrack* track = it.second;
+			Ogre::String trackName = track->getAssociatedNode()->getName();
+			std::cout << animName << " track: " << trackName << "\n";
+			if (trackName == "mixamorig:Hips")
+				hips_track = track;
+			else if (trackName == "Root") {
+				root_track = track;
+				root_node = track->getAssociatedNode();
+			}
+		}
+		assert(false);
+		root_track->removeAllKeyFrames();
+		std::cout << hips_track << " " << root_track << "\n";
+		std::cout << hips_track->getNumKeyFrames() << " " << root_track->getNumKeyFrames() << "\n";
+		assert(hips_track && root_track);
+		Ogre::Vector3 delta = Ogre::Vector3::ZERO;
+		for(j = 0; j < hips_track->getNumKeyFrames(); j++) {
+			float timePos = hips_track->getNodeKeyFrame(j)->getTime();
+			Ogre::Vector3 trans = hips_track->getNodeKeyFrame(j)->getTranslate();
+			Ogre::Vector3 hips_trans(0, 0, 0);
+			Ogre::Vector3 root_trans(0, 0, 0);
+			hips_track->getNodeKeyFrame(j)->setTranslate(hips_trans);
+			Ogre::TransformKeyFrame *nk = root_track->createNodeKeyFrame(timePos);
+			nk->setTranslate(root_trans - delta);
+			nk->setScale(Ogre::Vector3(1, 1, 1));
+			nk->setRotation(Ogre::Quaternion());
+			std::cout << animName << " delta: " << j << " " << timePos << " " << root_trans - delta << "\n";
+			delta = root_trans;
+		}
+		for(j = 0; j < root_track->getNumKeyFrames(); j++) {
+			float timePos = hips_track->getNodeKeyFrame(j)->getTime();
+			Ogre::Vector3 root_trans = hips_track->getNodeKeyFrame(j)->getTranslate();
+			std::cout << animName << " delta: root: " << j << " " << timePos << " " << root_trans << "\n";
+		}
+	}
+//	assert(false);
+#endif
+	setAnimation(ANIM_IDLE);
+}
+void Character::updateBody(Ogre::Real delta)
+{
+	Ogre::Quaternion toGoal =
+		mBodyNode->getOrientation().zAxis().getRotationTo(
+			mGoalDirection);
+	// calculate how much the character has to turn to face goal direction
+	Ogre::Real yawToGoal = toGoal.getYaw().valueDegrees();
+	// this is how much the character CAN turn this frame
+	Ogre::Real yawAtSpeed =
+		yawToGoal / Ogre::Math::Abs(yawToGoal) * delta * TURN_SPEED;
+	// reduce "turnability" if we're in midair
+	// if (mBaseAnimID == ANIM_JUMP_LOOP) yawAtSpeed *= 0.2f;
+	if (yawToGoal < 0)
+		yawToGoal = std::min<Ogre::Real>(
+			0,
+			std::max<Ogre::Real>(
+				yawToGoal,
+				yawAtSpeed)); //yawToGoal = Math::Clamp<Real>(yawToGoal, yawAtSpeed, 0);
+	else if (yawToGoal > 0)
+		yawToGoal = std::max<Ogre::Real>(
+			0,
+			std::min<Ogre::Real>(
+				yawToGoal,
+				yawAtSpeed)); //yawToGoal = Math::Clamp<Real>(yawToGoal, 0, yawAtSpeed);
+	mBodyNode->yaw(Ogre::Degree(yawToGoal));
+}
+void Character::updateAnimations(Ogre::Real delta)
+{
+	int i, j, k;
+	Ogre::Real animSpeed = 1;
+	mTimer += delta;
+	{
+		Ogre::Quaternion rot = mBodyNode->getOrientation();
+		OgreAssert(!Ogre::Math::isNaN(rot.x), "NaN");
+		OgreAssert(!Ogre::Math::isNaN(rot.y), "NaN");
+		OgreAssert(!Ogre::Math::isNaN(rot.z), "NaN");
+	}
+	if (mAnimID != ANIM_NONE) {
+		if (mAnimID == ANIM_WALK)
+			mAnims[mAnimID]->addTime(delta * 1.0f);
+		else
+			mAnims[mAnimID]->addTime(delta * animSpeed);
+	}
+	fadeAnimations(delta);
+}
+void Character::updateRootMotion(Ogre::Real delta)
+{
+	Ogre::Vector3 boneMotion = mRootBone->getPosition();
+	OgreAssert(delta > 0.0f, "Zero delta");
+	Ogre::Vector3 motion = boneMotion - rootMotion;
+	if (motion.squaredLength() > 0.1f * 0.1f)
+		motion = Ogre::Vector3();
+	rootMotion = boneMotion;
+#if 0
+	float mass = mRigidBody->getMass();
+	std::cout << "Root bone position: " << boneMotion << "\n";
+	std::cout << "body mass: " << mass << "\n";
+#endif
+	/* Kinematic motion */
+	Ogre::Quaternion rot = mBodyNode->getOrientation();
+	// Ogre::Vector3 gravity(0, -9.8, 0);
+	Ogre::Vector3 gravity(0, 0, 0);
+	Ogre::Vector3 velocity = rot * boneMotion / delta;
+	velocity += gravity * delta;
+	Ogre::Vector3 rotMotion = velocity * delta;
+	btTransform from(convert(mBodyNode->getOrientation()),
+			 convert(mBodyNode->getPosition()));
+	mBodyNode->setPosition(mBodyNode->getPosition() + rotMotion);
+	//	WorldData::get_singleton()->getWorld()->testBodyMotion(mRigidBody, from, Ogre::Bullet::convert(rotMotion), true,
+	//            nullptr, false, std::set<btCollisionObject *>());
+}
+void Character::fadeAnimations(Ogre::Real delta)
+{
+	int i;
+	for (i = 0; i < NUM_ANIMS; i++) {
+		if (mFadingIn[i]) {
+			// slowly fade this animation in until it has full weight
+			Ogre::Real newWeight = mAnims[i]->getWeight() +
+					       delta * ANIM_FADE_SPEED;
+			mAnims[i]->setWeight(
+				Ogre::Math::Clamp<Ogre::Real>(newWeight, 0, 1));
+			if (newWeight >= 1)
+				mFadingIn[i] = false;
+		} else if (mFadingOut[i]) {
+			// slowly fade this animation out until it has no weight, and then disable it
+			Ogre::Real newWeight = mAnims[i]->getWeight() -
+					       delta * ANIM_FADE_SPEED;
+			mAnims[i]->setWeight(
+				Ogre::Math::Clamp<Ogre::Real>(newWeight, 0, 1));
+			if (newWeight <= 0) {
+				mAnims[i]->setEnabled(false);
+				mFadingOut[i] = false;
+			}
+		}
+	}
+}
+void Character::setAnimation(AnimID id, bool reset)
+{
+	assert(id >= 0 && id < NUM_ANIMS);
+	if (mAnimID != ANIM_NONE) {
+		mFadingIn[mAnimID] = false;
+		mFadingOut[mAnimID] = true;
+	}
+	mAnimID = id;
+	if (id != ANIM_NONE) {
+		mAnims[id]->setEnabled(true);
+		mAnims[id]->setWeight(0);
+		mFadingOut[id] = false;
+		mFadingIn[id] = true;
+		if (reset)
+			mAnims[id]->setTimePosition(0);
+	}
+}
+
+bool Character::act_run()
+{
+	if (mAnimID == ANIM_IDLE)
+		setAnimation(ANIM_RUN, true);
+	else if (mAnimID == ANIM_WALK)
+		setAnimation(ANIM_RUN);
+	return true;
+}
+
+bool Character::act_walk()
+{
+	if (mAnimID == ANIM_IDLE)
+		setAnimation(ANIM_WALK, true);
+	else if (mAnimID == ANIM_RUN)
+		setAnimation(ANIM_WALK);
+	return true;
+}
+
+bool Character::act_idle()
+{
+	setAnimation(ANIM_IDLE);
+	return true;
+}
+
+bool Character::isRunning()
+{
+	return mAnimID == ANIM_RUN;
+}
+
+bool Character::isWalking()
+{
+	return mAnimID == ANIM_WALK;
+}
+
+Ogre::Vector3 Character::getPosition()
+{
+	return mBodyNode->_getDerivedPosition();
+}

src/characters/character.h

@@ -0,0 +1,115 @@
+#include <Ogre.h>
+#include <OgreFrameListener.h>
+#include <OgreBullet.h>
+class btCompoundShape;
+class btPairCachingGhostObject;
+class Character : public Ogre::FrameListener {
+	enum AnimID {
+		ANIM_IDLE = 0,
+		ANIM_WALK,
+		ANIM_RUN,
+		NUM_ANIMS,
+		ANIM_NONE = NUM_ANIMS
+	};
+	Ogre::String mModelName;
+	Ogre::Node *mRootBone;
+	Ogre::SceneManager *mScnMgr;
+
+	Ogre::SceneNode *mCameraPivot;
+	Ogre::SceneNode *mCameraGoal, *mBodyNode;
+	Ogre::Entity *mBodyEnt;
+	Ogre::Real mPivotPitch;
+	Ogre::Real mVerticalVelocity;
+	Ogre::Vector3 mGoalDirection; // actual intended direction in world-space
+	Ogre::AnimationState *mAnims[NUM_ANIMS]; // master animation list
+	Ogre::Animation *mSkelAnimations[NUM_ANIMS];
+	Ogre::NodeAnimationTrack *mHipsTracks[NUM_ANIMS];
+	Ogre::NodeAnimationTrack *mRootTracks[NUM_ANIMS];
+	AnimID mAnimID;
+	bool mFadingIn[NUM_ANIMS]; // which animations are fading in
+	bool mFadingOut[NUM_ANIMS]; // which animations are fading out
+	Ogre::Real
+		mTimer; // general timer to see how long animations have been playing
+	Ogre::Skeleton *mSkeleton;
+	bool mRunning;
+	Ogre::Vector3 rootMotion;
+	Ogre::Quaternion rootRotation;
+	//    btRigidBody *mRigidBody;
+	btCompoundShape *mCollisionShape;
+	btPairCachingGhostObject *mGhostObject;
+	Ogre::Bullet::DynamicsWorld *mWorld;
+
+public:
+	Character(Ogre::SceneManager *scnMgr, const Ogre::String &modelName,
+		  Ogre::Bullet::DynamicsWorld *world);
+	~Character();
+
+private:
+	void setupBody();
+	void setupAnimations();
+
+public:
+	bool frameStarted(const Ogre::FrameEvent &evt) override;
+	bool frameEnded(const Ogre::FrameEvent &evt) override;
+	bool frameRenderingQueued(const Ogre::FrameEvent &evt) override;
+
+private:
+	void updateBody(Ogre::Real deltaTime);
+	void updateAnimations(Ogre::Real deltaTime);
+	void updateRootMotion(Ogre::Real deltaTime);
+	void fadeAnimations(Ogre::Real deltaTime);
+	void setAnimation(AnimID id, bool reset = false);
+	inline btQuaternion convert(const Ogre::Quaternion &q)
+	{
+		return btQuaternion(q.x, q.y, q.z, q.w);
+	}
+	inline btVector3 convert(const Ogre::Vector3 &v)
+	{
+		return btVector3(v.x, v.y, v.z);
+	}
+	inline btTransform convert(const Ogre::Quaternion &q,
+				   const Ogre::Vector3 &v)
+	{
+		btQuaternion mq = convert(q);
+		btVector3 mv = convert(v);
+		return btTransform(mq, mv);
+	}
+	inline Ogre::Quaternion convert(const btQuaternion &q)
+	{
+		return Ogre::Quaternion(q.w(), q.x(), q.y(), q.z());
+	}
+	inline Ogre::Vector3 convert(const btVector3 &v)
+	{
+		return Ogre::Vector3(v.x(), v.y(), v.z());
+	}
+	inline void convert(const btTransform &from, Ogre::Quaternion &q,
+			    Ogre::Vector3 &v)
+	{
+		q = convert(from.getRotation());
+		v = convert(from.getOrigin());
+	}
+
+public:
+	bool isIdle()
+	{
+		return mAnimID == ANIM_IDLE;
+	}
+	bool act_run();
+	bool act_walk();
+	bool act_idle();
+	bool isRunning();
+	bool isWalking();
+	bool isMoving()
+	{
+		return isRunning() || isWalking();
+	}
+	void setGoalDirection(const Ogre::Vector3 &goalDirection)
+	{
+		mGoalDirection = goalDirection;
+	}
+	Ogre::Vector3 getGoalDirection()
+	{
+		return mGoalDirection;
+	}
+	Ogre::Vector3 getPosition();
+};

src/characters/controller.cpp

@@ -0,0 +1,629 @@
+#include <iostream>
+#include "character.h"
+#include "controller.h"
+#if 0
+#define CAM_HEIGHT 1.6f // height of camera above character's center of mass
+CharacterController::CharacterController(Ogre::SceneNode *camNode,
+					 Ogre::Camera *cam,
+					 Ogre::SceneManager *scnMgr,
+					 Character *character)
+	: mCameraNode(camNode)
+	, mCamera(cam)
+	, mScnMgr(scnMgr)
+	, mPivotPitch(0)
+	, mVerticalVelocity(0)
+	, mRunning(false)
+	, mCharacter(character)
+	, mCameraPivot(nullptr)
+{
+	setupCamera();
+}
+CharacterController::~CharacterController()
+{
+}
+void CharacterController::setupCamera()
+{
+	// create a pivot at roughly the character's shoulder
+	mCameraPivot = mScnMgr->getRootSceneNode()->createChildSceneNode();
+	mCameraGoal =
+		mCameraPivot->createChildSceneNode(Ogre::Vector3(0, 2, 3));
+	mCameraNode->setPosition(mCameraPivot->getPosition() +
+				 mCameraGoal->getPosition());
+	mCameraPivot->setFixedYawAxis(true);
+	mCameraGoal->setFixedYawAxis(true);
+	mCameraNode->setFixedYawAxis(true);
+	// our model is quite small, so reduce the clipping planes
+	mCamera->setNearClipDistance(0.1f);
+	mCamera->setFarClipDistance(700);
+
+	mPivotPitch = 0;
+	mKeyDirection = Ogre::Vector3::ZERO;
+	mVerticalVelocity = 0;
+	std::cout << "ORIGINAL: " << mCameraNode->getPosition() << "\n";
+}
+bool CharacterController::keyPressed(const OgreBites::KeyboardEvent &evt)
+{
+	OgreBites::Keycode key = evt.keysym.sym;
+	if (key == 'q') {
+		/* ... */
+	} else if (key == 'e') {
+	} else if (key == 'w')
+		mKeyDirection.z = -1;
+	else if (key == 'a')
+		mKeyDirection.x = -1;
+	else if (key == 's')
+		mKeyDirection.z = 1;
+	else if (key == 'd')
+		mKeyDirection.x = 1;
+	if (key == OgreBites::SDLK_LSHIFT)
+		mRunning = true;
+	if (!mKeyDirection.isZeroLength() && mCharacter->isIdle()) {
+		if (mRunning)
+			mCharacter->act_run();
+		else
+			mCharacter->act_walk();
+		// std::cout << "Walking\n";
+	} else if (!mKeyDirection.isZeroLength() && mCharacter->isWalking() &&
+		   mRunning)
+		mCharacter->act_run();
+	return true;
+}
+bool CharacterController::keyReleased(const OgreBites::KeyboardEvent &evt)
+{
+	OgreBites::Keycode key = evt.keysym.sym;
+	if (key == 'w' && mKeyDirection.z == -1)
+		mKeyDirection.z = 0;
+	else if (key == 'a' && mKeyDirection.x == -1)
+		mKeyDirection.x = 0;
+	else if (key == 's' && mKeyDirection.z == 1)
+		mKeyDirection.z = 0;
+	else if (key == 'd' && mKeyDirection.x == 1)
+		mKeyDirection.x = 0;
+	if (key == OgreBites::SDLK_LSHIFT)
+		mRunning = false;
+
+	if (mKeyDirection.isZeroLength() && mCharacter->isMoving())
+		mCharacter->act_idle();
+	else if (!mKeyDirection.isZeroLength() && mCharacter->isRunning() &&
+		 !mRunning)
+		mCharacter->act_walk();
+
+	return true;
+}
+bool CharacterController::mouseMoved(const OgreBites::MouseMotionEvent &evt)
+{
+	// update camera goal based on mouse movement
+	updateCameraGoal(-0.18f * evt.xrel, -0.12f * evt.yrel, 0);
+	return true;
+}
+bool CharacterController::mouseWheelRolled(const OgreBites::MouseWheelEvent &evt)
+{
+	// update camera goal based on mouse movement
+	updateCameraGoal(0, 0, -0.15f * evt.y);
+	return true;
+}
+bool CharacterController::mousePressed(const OgreBites::MouseButtonEvent &evt)
+{
+	std::cout << "Mouse press\n";
+	return false;
+}
+void CharacterController::frameRendered(const Ogre::FrameEvent &evt)
+{
+	Ogre::Vector3 goalDirection = Ogre::Vector3::ZERO;
+	updateCamera(evt.timeSinceLastFrame);
+	if (mKeyDirection != Ogre::Vector3::ZERO) {
+		// calculate actually goal direction in world based on player's key directions
+		goalDirection +=
+			mKeyDirection.z * mCameraNode->getOrientation().zAxis();
+		goalDirection +=
+			mKeyDirection.x * mCameraNode->getOrientation().xAxis();
+		goalDirection.y = 0;
+		goalDirection.normalise();
+		mCharacter->setGoalDirection(goalDirection);
+	}
+}
+bool CharacterController::frameStarted(const Ogre::FrameEvent &evt)
+{
+	return true;
+}
+void CharacterController::updateCameraGoal(Ogre::Real deltaYaw,
+					   Ogre::Real deltaPitch,
+					   Ogre::Real deltaZoom)
+{
+	mCameraPivot->yaw(Ogre::Degree(deltaYaw), Ogre::Node::TS_PARENT);
+	if (!(mPivotPitch + deltaPitch > 25 && deltaPitch > 0) &&
+	    !(mPivotPitch + deltaPitch < -60 && deltaPitch < 0)) {
+		mCameraPivot->pitch(Ogre::Degree(deltaPitch),
+				    Ogre::Node::TS_LOCAL);
+		mPivotPitch += deltaPitch;
+	}
+	Ogre::Real dist = mCameraGoal->_getDerivedPosition().distance(
+		mCameraPivot->_getDerivedPosition());
+	Ogre::Real distChange = deltaZoom * dist;
+
+	// bound the zoom
+	if (!(dist + distChange < 8 && distChange < 0) &&
+	    !(dist + distChange > 25 && distChange > 0))
+		mCameraGoal->translate(0, 0, distChange, Ogre::Node::TS_LOCAL);
+}
+void CharacterController::updateCamera(Ogre::Real delta)
+{
+	//	static int count = 0;
+	// place the camera pivot roughly at the character's shoulder
+	Ogre::Vector3 pivotOffset =
+		mCharacter->getPosition() - mCameraPivot->_getDerivedPosition();
+	Ogre::Vector3 pivotPos = mCameraPivot->_getDerivedPosition();
+	mCameraPivot->setPosition(pivotPos + pivotOffset * 0.1f * delta +
+				  Ogre::Vector3::UNIT_Y * CAM_HEIGHT);
+	// move the camera smoothly to the goal
+	Ogre::Vector3 goalOffset =
+		mCameraGoal->_getDerivedPosition() - mCameraNode->getPosition();
+	mCameraNode->translate(goalOffset * delta * 9.0f);
+	// always look at the pivot
+	mCameraNode->lookAt(mCameraPivot->_getDerivedPosition(),
+			    Ogre::Node::TS_PARENT);
+}
+#endif
+#define CAM_HEIGHT 1.6f // height of camera above character's center of mass
+#define RUN_SPEED 17 // character running speed in units per second
+#define TURN_SPEED 500.0f // character turning in degrees per second
+#define ANIM_FADE_SPEED \
+	7.5f // animation crossfade speed in % of full weight per second
+CharacterController::CharacterController(Ogre::SceneNode *camNode,
+					 Ogre::Camera *cam,
+					 Ogre::SceneManager *scnMgr,
+					 Ogre::Bullet::DynamicsWorld *world)
+	: mCameraNode(camNode)
+	, mCamera(cam)
+	, mScnMgr(scnMgr)
+	, mPivotPitch(0)
+	, mVerticalVelocity(0)
+	, mAnimID(ANIM_NONE)
+	, mRunning(false)
+	, mWorld(world)
+	, mCollisionShape(nullptr)
+	, mGhostObject(nullptr)
+{
+	setupBody();
+	setupCamera();
+	setupAnimations();
+	Ogre::Root::getSingleton().addFrameListener(this);
+}
+CharacterController::~CharacterController()
+{
+}
+void CharacterController::setupBody()
+{
+	mBodyEnt = mScnMgr->createEntity("normal-male.glb");
+	mBodyNode = mScnMgr->getRootSceneNode()->createChildSceneNode();
+	mBodyNode->attachObject(mBodyEnt);
+	mSkeleton = mBodyEnt->getSkeleton();
+	// mRigidBody = world->addCharacter(mBodyEnt, 0);
+	// mCollisionShape = static_cast<btCompoundShape *>(mRigidBody->getCollisionShape());
+	mGhostObject = new btPairCachingGhostObject();
+	mCollisionShape = new btCompoundShape;
+	mGhostObject->setCollisionShape(mCollisionShape);
+
+	{
+		btVector3 inertia(0, 0, 0);
+		//        mCollisionShape = new btCompoundShape();
+		btScalar height = 1.0f;
+		btScalar radius = 0.3f;
+		btCapsuleShape *shape =
+			new btCapsuleShape(radius, 2 * height - 2 * radius);
+		btTransform transform;
+		transform.setIdentity();
+		transform.setOrigin(btVector3(0, 1, 0));
+		static_cast<btCompoundShape *>(mCollisionShape)
+			->addChildShape(transform, shape);
+		btScalar masses[1] = { 0 };
+		btTransform principal;
+		static_cast<btCompoundShape *>(mCollisionShape)
+			->calculatePrincipalAxisTransform(masses, principal,
+							  inertia);
+	}
+	mGhostObject->setCollisionFlags(
+		btCollisionObject::CF_KINEMATIC_OBJECT |
+		btCollisionObject::CF_NO_CONTACT_RESPONSE);
+	mGhostObject->setActivationState(DISABLE_DEACTIVATION);
+	Ogre::Bullet::KinematicMotionSimple *controller =
+		new Ogre::Bullet::KinematicMotionSimple(mGhostObject,
+							mBodyNode);
+	mWorld->attachCollisionObject(mGhostObject, mBodyEnt,
+				      btBroadphaseProxy::AllFilter,
+				      btBroadphaseProxy::AllFilter);
+	mWorld->getBtWorld()->addAction(controller);
+
+	assert(mCollisionShape);
+#if 0
+    if (mRigidBody->getMass() == 0) {
+#if 0
+        mRigidBody->setCollisionFlags(mRigidBody->getCollisionFlags()
+		    | btCollisionObject::CF_KINEMATIC_OBJECT
+		    | btCollisionObject::CF_NO_CONTACT_RESPONSE
+		    );
+#endif
+#if 0
+	mGhostObject->setWorldTransform(mRigidBody->getWorldTransform());
+	WorldData::get_singleton()->getBtWorld()
+		->getBroadphase()->getOverlappingPairCache()
+			->setInternalGhostPairCallback(new btGhostPairCallback());
+#endif
+    }
+#endif
+#if 0
+    mRigidBody->setActivationState(DISABLE_DEACTIVATION);
+#endif
+#if 0
+    {
+        Ogre::Entity *e2 = mScnMgr->createEntity("normal-male.glb");
+	Ogre::SceneNode *e2node = mScnMgr->getRootSceneNode()->createChildSceneNode();
+    	e2node->attachObject(e2);
+	mGhostObject = WorldData::get_singleton()->addGhostObject(e2, mCollisionShape);
+	mController = new btKinematicCharacterController(mGhostObject, mCollisionShape, 0.5f);
+	WorldData::get_singleton()->getBtWorld()->addAction(mController);
+    }
+#endif
+	assert(mSkeleton->hasBone("Root"));
+	mRootBone = mSkeleton->getBone("Root");
+	assert(mRootBone);
+}
+void CharacterController::setupCamera()
+{
+	// create a pivot at roughly the character's shoulder
+	mCameraPivot = mScnMgr->getRootSceneNode()->createChildSceneNode();
+	mCameraGoal =
+		mCameraPivot->createChildSceneNode(Ogre::Vector3(0, 2, 3));
+	mCameraNode->setPosition(mCameraPivot->getPosition() +
+				 mCameraGoal->getPosition());
+	mCameraPivot->setFixedYawAxis(true);
+	mCameraGoal->setFixedYawAxis(true);
+	mCameraNode->setFixedYawAxis(true);
+	// our model is quite small, so reduce the clipping planes
+	mCamera->setNearClipDistance(0.1f);
+	mCamera->setFarClipDistance(700);
+
+	mPivotPitch = 0;
+	mKeyDirection = Ogre::Vector3::ZERO;
+	mVerticalVelocity = 0;
+}
+void CharacterController::setupAnimations()
+{
+	int i, j;
+	mSkeleton->setBlendMode(Ogre::ANIMBLEND_CUMULATIVE);
+	Ogre::String animNames[NUM_ANIMS] = { "idle", "walking", "running" };
+	for (i = 0; i < NUM_ANIMS; i++) {
+		mAnims[i] = mBodyEnt->getAnimationState(animNames[i]);
+		mAnims[i]->setLoop(true);
+		mAnims[i]->setEnabled(true);
+		mAnims[i]->setWeight(0);
+		mFadingIn[i] = false;
+		mFadingOut[i] = false;
+		mSkelAnimations[i] = mSkeleton->getAnimation(animNames[i]);
+		for (const auto &it : mSkelAnimations[i]->_getNodeTrackList()) {
+			Ogre::NodeAnimationTrack *track = it.second;
+			Ogre::String trackName =
+				track->getAssociatedNode()->getName();
+			if (trackName == "mixamorig:Hips") {
+				mHipsTracks[i] = track;
+			} else if (trackName == "Root") {
+				mRootTracks[i] = track;
+				//				mRootTracks[i]->removeAllKeyFrames();
+			}
+		}
+		Ogre::Vector3 delta = Ogre::Vector3::ZERO;
+		Ogre::Vector3 motion = Ogre::Vector3::ZERO;
+		for (j = 0; j < mRootTracks[i]->getNumKeyFrames(); j++) {
+			Ogre::Vector3 trans = mRootTracks[i]
+						      ->getNodeKeyFrame(j)
+						      ->getTranslate();
+			if (j == 0)
+				delta = trans;
+			else
+				delta = trans - motion;
+			mRootTracks[i]->getNodeKeyFrame(j)->setTranslate(delta);
+			motion = trans;
+		}
+	}
+#if 0
+	for(i = 0; i < NUM_ANIMS - 1; i++) {
+		// need to cache
+		int j;
+		Ogre::String animName = mAnims[i]->getAnimationName();
+		Ogre::Animation *anim = mSkeleton->getAnimation(animName);
+		Ogre::NodeAnimationTrack *hips_track = nullptr, *root_track = nullptr;
+		Ogre::Node *root_node = nullptr;
+		for (const auto& it : anim->_getNodeTrackList()) {
+			Ogre::NodeAnimationTrack* track = it.second;
+			Ogre::String trackName = track->getAssociatedNode()->getName();
+			std::cout << animName << " track: " << trackName << "\n";
+			if (trackName == "mixamorig:Hips")
+				hips_track = track;
+			else if (trackName == "Root") {
+				root_track = track;
+				root_node = track->getAssociatedNode();
+			}
+		}
+		assert(false);
+		root_track->removeAllKeyFrames();
+		std::cout << hips_track << " " << root_track << "\n";
+		std::cout << hips_track->getNumKeyFrames() << " " << root_track->getNumKeyFrames() << "\n";
+		assert(hips_track && root_track);
+		Ogre::Vector3 delta = Ogre::Vector3::ZERO;
+		for(j = 0; j < hips_track->getNumKeyFrames(); j++) {
+			float timePos = hips_track->getNodeKeyFrame(j)->getTime();
+			Ogre::Vector3 trans = hips_track->getNodeKeyFrame(j)->getTranslate();
+			Ogre::Vector3 hips_trans(0, 0, 0);
+			Ogre::Vector3 root_trans(0, 0, 0);
+			hips_track->getNodeKeyFrame(j)->setTranslate(hips_trans);
+			Ogre::TransformKeyFrame *nk = root_track->createNodeKeyFrame(timePos);
+			nk->setTranslate(root_trans - delta);
+			nk->setScale(Ogre::Vector3(1, 1, 1));
+			nk->setRotation(Ogre::Quaternion());
+			std::cout << animName << " delta: " << j << " " << timePos << " " << root_trans - delta << "\n";
+			delta = root_trans;
+		}
+		for(j = 0; j < root_track->getNumKeyFrames(); j++) {
+			float timePos = hips_track->getNodeKeyFrame(j)->getTime();
+			Ogre::Vector3 root_trans = hips_track->getNodeKeyFrame(j)->getTranslate();
+			std::cout << animName << " delta: root: " << j << " " << timePos << " " << root_trans << "\n";
+		}
+	}
+//	assert(false);
+#endif
+	setAnimation(ANIM_IDLE);
+}
+bool CharacterController::keyPressed(const OgreBites::KeyboardEvent &evt)
+{
+	OgreBites::Keycode key = evt.keysym.sym;
+	if (key == 'q' && (mAnimID == ANIM_IDLE)) {
+		/* ... */
+		mTimer = 0;
+	} else if (key == 'e') {
+	} else if (key == 'w')
+		mKeyDirection.z = -1;
+	else if (key == 'a')
+		mKeyDirection.x = -1;
+	else if (key == 's')
+		mKeyDirection.z = 1;
+	else if (key == 'd')
+		mKeyDirection.x = 1;
+	if (key == OgreBites::SDLK_LSHIFT)
+		mRunning = true;
+	if (!mKeyDirection.isZeroLength() && mAnimID == ANIM_IDLE) {
+		if (mRunning)
+			setAnimation(ANIM_RUN, true);
+		else
+			setAnimation(ANIM_WALK, true);
+		// std::cout << "Walking\n";
+	} else if (!mKeyDirection.isZeroLength() && mAnimID == ANIM_WALK &&
+		   mRunning)
+		setAnimation(ANIM_RUN);
+	return true;
+}
+bool CharacterController::keyReleased(const OgreBites::KeyboardEvent &evt)
+{
+	OgreBites::Keycode key = evt.keysym.sym;
+	if (key == 'w' && mKeyDirection.z == -1)
+		mKeyDirection.z = 0;
+	else if (key == 'a' && mKeyDirection.x == -1)
+		mKeyDirection.x = 0;
+	else if (key == 's' && mKeyDirection.z == 1)
+		mKeyDirection.z = 0;
+	else if (key == 'd' && mKeyDirection.x == 1)
+		mKeyDirection.x = 0;
+	if (key == OgreBites::SDLK_LSHIFT)
+		mRunning = false;
+
+	if (mKeyDirection.isZeroLength() &&
+	    (mAnimID == ANIM_WALK || mAnimID == ANIM_RUN))
+		setAnimation(ANIM_IDLE);
+	else if (!mKeyDirection.isZeroLength() && mAnimID == ANIM_RUN &&
+		 !mRunning)
+		setAnimation(ANIM_WALK);
+
+	return true;
+}
+bool CharacterController::mouseMoved(const OgreBites::MouseMotionEvent &evt)
+{
+	// update camera goal based on mouse movement
+	updateCameraGoal(-0.18f * evt.xrel, -0.12f * evt.yrel, 0);
+	return true;
+}
+bool CharacterController::mouseWheelRolled(const OgreBites::MouseWheelEvent &evt)
+{
+	// update camera goal based on mouse movement
+	updateCameraGoal(0, 0, -0.15f * evt.y);
+	return true;
+}
+bool CharacterController::mousePressed(const OgreBites::MouseButtonEvent &evt)
+{
+	std::cout << "Mouse press\n";
+	return false;
+}
+void CharacterController::frameRendered(const Ogre::FrameEvent &evt)
+{
+	updateBody(evt.timeSinceLastFrame);
+	updateAnimations(evt.timeSinceLastFrame);
+	updateCamera(evt.timeSinceLastFrame);
+	if (evt.timeSinceLastFrame > 0)
+		updateRootMotion(evt.timeSinceLastFrame);
+}
+bool CharacterController::frameStarted(const Ogre::FrameEvent &evt)
+{
+	return true;
+}
+void CharacterController::updateCameraGoal(Ogre::Real deltaYaw,
+					   Ogre::Real deltaPitch,
+					   Ogre::Real deltaZoom)
+{
+	mCameraPivot->yaw(Ogre::Degree(deltaYaw), Ogre::Node::TS_PARENT);
+	if (!(mPivotPitch + deltaPitch > 25 && deltaPitch > 0) &&
+	    !(mPivotPitch + deltaPitch < -60 && deltaPitch < 0)) {
+		mCameraPivot->pitch(Ogre::Degree(deltaPitch),
+				    Ogre::Node::TS_LOCAL);
+		mPivotPitch += deltaPitch;
+	}
+	Ogre::Real dist = mCameraGoal->_getDerivedPosition().distance(
+		mCameraPivot->_getDerivedPosition());
+	Ogre::Real distChange = deltaZoom * dist;
+
+	// bound the zoom
+	if (!(dist + distChange < 8 && distChange < 0) &&
+	    !(dist + distChange > 25 && distChange > 0))
+		mCameraGoal->translate(0, 0, distChange, Ogre::Node::TS_LOCAL);
+}
+void CharacterController::updateBody(Ogre::Real delta)
+{
+	mGoalDirection = Ogre::Vector3::ZERO;
+	if (mKeyDirection != Ogre::Vector3::ZERO) {
+		// calculate actually goal direction in world based on player's key directions
+		mGoalDirection +=
+			mKeyDirection.z * mCameraNode->getOrientation().zAxis();
+		mGoalDirection +=
+			mKeyDirection.x * mCameraNode->getOrientation().xAxis();
+		mGoalDirection.y = 0;
+		mGoalDirection.normalise();
+
+		Ogre::Quaternion toGoal =
+			mBodyNode->getOrientation().zAxis().getRotationTo(
+				mGoalDirection);
+		// calculate how much the character has to turn to face goal direction
+		Ogre::Real yawToGoal = toGoal.getYaw().valueDegrees();
+		// this is how much the character CAN turn this frame
+		Ogre::Real yawAtSpeed = yawToGoal / Ogre::Math::Abs(yawToGoal) *
+					delta * TURN_SPEED;
+		// reduce "turnability" if we're in midair
+		// if (mBaseAnimID == ANIM_JUMP_LOOP) yawAtSpeed *= 0.2f;
+		if (yawToGoal < 0)
+			yawToGoal = std::min<Ogre::Real>(
+				0,
+				std::max<Ogre::Real>(
+					yawToGoal,
+					yawAtSpeed)); //yawToGoal = Math::Clamp<Real>(yawToGoal, yawAtSpeed, 0);
+		else if (yawToGoal > 0)
+			yawToGoal = std::max<Ogre::Real>(
+				0,
+				std::min<Ogre::Real>(
+					yawToGoal,
+					yawAtSpeed)); //yawToGoal = Math::Clamp<Real>(yawToGoal, 0, yawAtSpeed);
+		mBodyNode->yaw(Ogre::Degree(yawToGoal));
+		// move in current body direction (not the goal direction)
+//		mBodyNode->translate(0, 0, delta * RUN_SPEED * mAnims[mAnimID]->getWeight(),
+//				Ogre::Node::TS_LOCAL);
+#if 0
+        if (mBaseAnimID == ANIM_JUMP_LOOP)
+        {
+            // if we're jumping, add a vertical offset too, and apply gravity
+            mBodyNode->translate(0, mVerticalVelocity * deltaTime, 0, Node::TS_LOCAL);
+            mVerticalVelocity -= GRAVITY * deltaTime;
+            
+            Vector3 pos = mBodyNode->getPosition();
+            if (pos.y <= CHAR_HEIGHT)
+            {
+                // if we've hit the ground, change to landing state
+                pos.y = CHAR_HEIGHT;
+                mBodyNode->setPosition(pos);
+                setBaseAnimation(ANIM_JUMP_END, true);
+                mTimer = 0;
+            }
+        }
+#endif
+	}
+}
+void CharacterController::updateAnimations(Ogre::Real delta)
+{
+	int i, j, k;
+	Ogre::Real animSpeed = 1;
+	mTimer += delta;
+	if (mAnimID != ANIM_NONE) {
+		if (mAnimID == ANIM_WALK)
+			mAnims[mAnimID]->addTime(delta * 1.0f);
+		else
+			mAnims[mAnimID]->addTime(delta * animSpeed);
+	}
+	fadeAnimations(delta);
+}
+void CharacterController::updateRootMotion(Ogre::Real delta)
+{
+	Ogre::Vector3 boneMotion = mRootBone->getPosition();
+	OgreAssert(delta > 0.0f, "Zero delta");
+#if 0
+	Ogre::Vector3 motion = boneMotion - rootMotion;
+	if (motion.squaredLength() > 0.1f * 0.1f)
+		motion = Ogre::Vector3();
+	rootMotion = boneMotion;
+#endif
+#if 0
+	float mass = mRigidBody->getMass();
+	std::cout << "Root bone position: " << boneMotion << "\n";
+	std::cout << "body mass: " << mass << "\n";
+#endif
+	/* Kinematic motion */
+	Ogre::Quaternion rot = mBodyNode->getOrientation();
+	Ogre::Vector3 gravity(0, -9.8, 0);
+	gravity.y = 0.5f;
+	Ogre::Vector3 velocity = rot * boneMotion / delta;
+	velocity += gravity * delta;
+	Ogre::Vector3 rotMotion = velocity * delta;
+	btTransform from(convert(mBodyNode->getOrientation()),
+			 convert(mBodyNode->getPosition()));
+	mBodyNode->setPosition(mBodyNode->getPosition() + rotMotion);
+	//	WorldData::get_singleton()->getWorld()->testBodyMotion(mRigidBody, from, Ogre::Bullet::convert(rotMotion), true,
+	//            nullptr, false, std::set<btCollisionObject *>());
+}
+void CharacterController::fadeAnimations(Ogre::Real delta)
+{
+	int i;
+	for (i = 0; i < NUM_ANIMS; i++) {
+		if (mFadingIn[i]) {
+			// slowly fade this animation in until it has full weight
+			Ogre::Real newWeight = mAnims[i]->getWeight() +
+					       delta * ANIM_FADE_SPEED;
+			mAnims[i]->setWeight(
+				Ogre::Math::Clamp<Ogre::Real>(newWeight, 0, 1));
+			if (newWeight >= 1)
+				mFadingIn[i] = false;
+		} else if (mFadingOut[i]) {
+			// slowly fade this animation out until it has no weight, and then disable it
+			Ogre::Real newWeight = mAnims[i]->getWeight() -
+					       delta * ANIM_FADE_SPEED;
+			mAnims[i]->setWeight(
+				Ogre::Math::Clamp<Ogre::Real>(newWeight, 0, 1));
+			if (newWeight <= 0) {
+				mAnims[i]->setEnabled(false);
+				mFadingOut[i] = false;
+			}
+		}
+	}
+}
+void CharacterController::updateCamera(Ogre::Real delta)
+{
+	// place the camera pivot roughly at the character's shoulder
+	mCameraPivot->setPosition(mBodyNode->getPosition() +
+				  Ogre::Vector3::UNIT_Y * CAM_HEIGHT);
+	// move the camera smoothly to the goal
+	Ogre::Vector3 goalOffset =
+		mCameraGoal->_getDerivedPosition() - mCameraNode->getPosition();
+	mCameraNode->translate(goalOffset * delta * 9.0f);
+	// always look at the pivot
+	mCameraNode->lookAt(mCameraPivot->_getDerivedPosition(),
+			    Ogre::Node::TS_PARENT);
+}
+void CharacterController::setAnimation(AnimID id, bool reset)
+{
+	assert(id >= 0 && id < NUM_ANIMS);
+	if (mAnimID != ANIM_NONE) {
+		mFadingIn[mAnimID] = false;
+		mFadingOut[mAnimID] = true;
+	}
+	mAnimID = id;
+	if (id != ANIM_NONE) {
+		mAnims[id]->setEnabled(true);
+		mAnims[id]->setWeight(0);
+		mFadingOut[id] = false;
+		mFadingIn[id] = true;
+		if (reset)
+			mAnims[id]->setTimePosition(0);
+	}
+}

src/characters/controller.h

@@ -0,0 +1,162 @@
+#include <Ogre.h>
+#include <OgreInput.h>
+#include <OgreFrameListener.h>
+#if 0
+class Character;
+class CharacterController : public OgreBites::InputListener,
+			    Ogre::FrameListener {
+	Ogre::SceneNode *mCameraNode;
+	Ogre::Camera *mCamera;
+	Ogre::SceneManager *mScnMgr;
+
+	Ogre::SceneNode *mCameraPivot;
+	Ogre::SceneNode *mCameraGoal;
+	Ogre::Real mPivotPitch;
+	Ogre::Real mVerticalVelocity;
+	Ogre::Vector3
+		mKeyDirection; // player's local intended direction based on WASD keys
+	bool mRunning;
+	Character *mCharacter;
+
+public:
+	CharacterController(Ogre::SceneNode *camNode, Ogre::Camera *cam,
+			    Ogre::SceneManager *scnMgr, Character *character);
+	~CharacterController();
+
+private:
+	void setupCamera();
+
+public:
+	bool keyPressed(const OgreBites::KeyboardEvent &evt) override;
+	bool keyReleased(const OgreBites::KeyboardEvent &evt) override;
+	bool mouseMoved(const OgreBites::MouseMotionEvent &evt) override;
+	bool mouseWheelRolled(const OgreBites::MouseWheelEvent &evt) override;
+	bool mousePressed(const OgreBites::MouseButtonEvent &evt) override;
+	bool frameStarted(const Ogre::FrameEvent &evt) override;
+	void frameRendered(const Ogre::FrameEvent &evt) override;
+
+private:
+	void updateCamera(Ogre::Real deltaTime);
+	void updateCameraGoal(Ogre::Real deltaYaw, Ogre::Real deltaPitch,
+			      Ogre::Real deltaZoom);
+};
+#endif
+class CharacterController : public OgreBites::InputListener,
+			    Ogre::FrameListener {
+	enum AnimID {
+		ANIM_IDLE = 0,
+		ANIM_WALK,
+		ANIM_RUN,
+		NUM_ANIMS,
+		ANIM_NONE = NUM_ANIMS
+	};
+	Ogre::Node *mRootBone;
+	Ogre::SceneNode *mCameraNode;
+	Ogre::Camera *mCamera;
+	Ogre::SceneManager *mScnMgr;
+
+	Ogre::SceneNode *mCameraPivot;
+	Ogre::SceneNode *mCameraGoal, *mBodyNode;
+	Ogre::Entity *mBodyEnt;
+	Ogre::Real mPivotPitch;
+	Ogre::Real mVerticalVelocity;
+	Ogre::Vector3
+		mKeyDirection; // player's local intended direction based on WASD keys
+	Ogre::Vector3 mGoalDirection; // actual intended direction in world-space
+	Ogre::AnimationState *mAnims[NUM_ANIMS]; // master animation list
+	Ogre::Animation *mSkelAnimations[NUM_ANIMS];
+	Ogre::NodeAnimationTrack *mHipsTracks[NUM_ANIMS];
+	Ogre::NodeAnimationTrack *mRootTracks[NUM_ANIMS];
+	AnimID mAnimID;
+	bool mFadingIn[NUM_ANIMS]; // which animations are fading in
+	bool mFadingOut[NUM_ANIMS]; // which animations are fading out
+	Ogre::Real
+		mTimer; // general timer to see how long animations have been playing
+	Ogre::Skeleton *mSkeleton;
+	bool mRunning;
+	Ogre::Bullet::DynamicsWorld *mWorld;
+	Ogre::Vector3 rootMotion;
+	Ogre::Quaternion rootRotation;
+	//    btRigidBody *mRigidBody;
+	btCompoundShape *mCollisionShape;
+	btPairCachingGhostObject *mGhostObject;
+
+public:
+	CharacterController(Ogre::SceneNode *camNode, Ogre::Camera *cam,
+			    Ogre::SceneManager *scnMgr,
+			    Ogre::Bullet::DynamicsWorld *world);
+	~CharacterController();
+
+private:
+	void setupBody();
+	void setupCamera();
+	void setupAnimations();
+
+public:
+	bool keyPressed(const OgreBites::KeyboardEvent &evt) override;
+	bool keyReleased(const OgreBites::KeyboardEvent &evt) override;
+	bool mouseMoved(const OgreBites::MouseMotionEvent &evt) override;
+	bool mouseWheelRolled(const OgreBites::MouseWheelEvent &evt) override;
+	bool mousePressed(const OgreBites::MouseButtonEvent &evt) override;
+	bool frameStarted(const Ogre::FrameEvent &evt) override;
+	void frameRendered(const Ogre::FrameEvent &evt) override;
+
+private:
+	void updateBody(Ogre::Real deltaTime);
+	void updateAnimations(Ogre::Real deltaTime);
+	void updateRootMotion(Ogre::Real deltaTime);
+	void fadeAnimations(Ogre::Real deltaTime);
+	void updateCamera(Ogre::Real deltaTime);
+	void updateCameraGoal(Ogre::Real deltaYaw, Ogre::Real deltaPitch,
+			      Ogre::Real deltaZoom);
+	void setAnimation(AnimID id, bool reset = false);
+#if 0
+    struct testMotionResult {
+    };
+    struct recoverResult {
+    };
+
+    bool bodyTestMotion(btRigidBody *body,
+		    const btTransform &from,
+		    const btVector3 &motion, bool infinite_inertia,
+		    textMotionResult *result, 
+		    bool excludeRaycastShapes,
+		    const std::set<btCollisionObject *> &exclude);
+    bool recoverFromPenetration(btRigidBody *body,
+		    const btTransform &body_position,
+		    btScalar recover_movement_scale,
+		    bool infinite_inertia,
+		    btVector3 &delta_recover_movement,
+		    recoverResult *recover_result,
+		    const std::set<btCollisionObject *> &exclude);
+#endif
+	inline btQuaternion convert(const Ogre::Quaternion &q)
+	{
+		return btQuaternion(q.x, q.y, q.z, q.w);
+	}
+	inline btVector3 convert(const Ogre::Vector3 &v)
+	{
+		return btVector3(v.x, v.y, v.z);
+	}
+	inline btTransform convert(const Ogre::Quaternion &q,
+				   const Ogre::Vector3 &v)
+	{
+		btQuaternion mq = convert(q);
+		btVector3 mv = convert(v);
+		return btTransform(mq, mv);
+	}
+	inline Ogre::Quaternion convert(const btQuaternion &q)
+	{
+		return Ogre::Quaternion(q.w(), q.x(), q.y(), q.z());
+	}
+	inline Ogre::Vector3 convert(const btVector3 &v)
+	{
+		return Ogre::Vector3(v.x(), v.y(), v.z());
+	}
+	inline void convert(const btTransform &from, Ogre::Quaternion &q,
+			    Ogre::Vector3 &v)
+	{
+		q = convert(from.getRotation());
+		v = convert(from.getOrigin());
+	}
+};