Merge branch 'slimfast' into 'master'

Reduce size of physics objects by 1/3

See merge request OpenMW/openmw!1024

apps/openmw/mwphysics/actor.cpp

@@ -147,18 +147,20 @@ void Actor::updateCollisionObjectPosition()
 {
     std::scoped_lock lock(mPositionMutex);
     mShape->setLocalScaling(Misc::Convert::toBullet(mScale));
-    osg::Vec3f scaledTranslation = mRotation * osg::componentMultiply(mMeshTranslation, mScale);
-    osg::Vec3f newPosition = scaledTranslation + mPosition;
-    mLocalTransform.setOrigin(Misc::Convert::toBullet(newPosition));
-    mLocalTransform.setRotation(Misc::Convert::toBullet(mRotation));
-    mCollisionObject->setWorldTransform(mLocalTransform);
+    osg::Vec3f newPosition = getScaledMeshTranslation() + mPosition;
+
+    auto& trans = mCollisionObject->getWorldTransform();
+    trans.setOrigin(Misc::Convert::toBullet(newPosition));
+    trans.setRotation(Misc::Convert::toBullet(mRotation));
+    mCollisionObject->setWorldTransform(trans);
+
     mWorldPositionChanged = false;
 }
 
 osg::Vec3f Actor::getCollisionObjectPosition() const
 {
     std::scoped_lock lock(mPositionMutex);
-    return Misc::Convert::toOsg(mLocalTransform.getOrigin());
+    return getScaledMeshTranslation() + mPosition;
 }
 
 bool Actor::setPosition(const osg::Vec3f& position)

apps/openmw/mwphysics/actor.hpp

@@ -74,9 +74,6 @@ namespace MWPhysics
          */
         osg::Vec3f getOriginalHalfExtents() const;
 
-        /// Returns the mesh translation, scaled and rotated as necessary
-        osg::Vec3f getScaledMeshTranslation() const;
-
         /**
          * Returns the position of the collision body
          * @note The collision shape's origin is in its center, so the position returned can be described as center of the actor collision box in world space.
@@ -181,6 +178,9 @@ namespace MWPhysics
         void addCollisionMask(int collisionMask);
         int getCollisionMask() const;
 
+        /// Returns the mesh translation, scaled and rotated as necessary
+        osg::Vec3f getScaledMeshTranslation() const;
+
         bool mCanWaterWalk;
         std::atomic<bool> mWalkingOnWater;
 
@@ -205,7 +205,6 @@ namespace MWPhysics
         bool mWorldPositionChanged;
         bool mSkipCollisions;
         bool mSkipSimulation;
-        btTransform mLocalTransform;
         mutable std::mutex mPositionMutex;
 
         unsigned int mStuckFrames;

apps/openmw/mwphysics/object.cpp

@@ -28,7 +28,7 @@ namespace MWPhysics
 
         setScale(ptr.getCellRef().getScale());
         setRotation(rotation);
-        setOrigin(Misc::Convert::toBullet(ptr.getRefData().getPosition().asVec3()));
+        updatePosition();
         commitPositionChange();
 
         mTaskScheduler->addCollisionObject(mCollisionObject.get(), collisionType, CollisionType_Actor|CollisionType_HeightMap|CollisionType_Projectile);
@@ -54,14 +54,14 @@ namespace MWPhysics
     void Object::setRotation(osg::Quat quat)
     {
         std::unique_lock<std::mutex> lock(mPositionMutex);
-        mLocalTransform.setRotation(Misc::Convert::toBullet(quat));
+        mRotation = quat;
         mTransformUpdatePending = true;
     }
 
-    void Object::setOrigin(const btVector3& vec)
+    void Object::updatePosition()
     {
         std::unique_lock<std::mutex> lock(mPositionMutex);
-        mLocalTransform.setOrigin(vec);
+        mPosition = mPtr.getRefData().getPosition().asVec3();
         mTransformUpdatePending = true;
     }
 
@@ -75,7 +75,10 @@ namespace MWPhysics
         }
         if (mTransformUpdatePending)
         {
-            mCollisionObject->setWorldTransform(mLocalTransform);
+            btTransform trans;
+            trans.setOrigin(Misc::Convert::toBullet(mPosition));
+            trans.setRotation(Misc::Convert::toBullet(mRotation));
+            mCollisionObject->setWorldTransform(trans);
             mTransformUpdatePending = false;
         }
     }
@@ -93,7 +96,10 @@ namespace MWPhysics
     btTransform Object::getTransform() const
     {
         std::unique_lock<std::mutex> lock(mPositionMutex);
-        return mLocalTransform;
+        btTransform trans;
+        trans.setOrigin(Misc::Convert::toBullet(mPosition));
+        trans.setRotation(Misc::Convert::toBullet(mRotation));
+        return trans;
     }
 
     bool Object::isSolid() const

apps/openmw/mwphysics/object.hpp

@@ -16,7 +16,6 @@ namespace Resource
 }
 
 class btCollisionObject;
-class btQuaternion;
 class btVector3;
 
 namespace MWPhysics
@@ -32,7 +31,7 @@ namespace MWPhysics
         const Resource::BulletShapeInstance* getShapeInstance() const;
         void setScale(float scale);
         void setRotation(osg::Quat quat);
-        void setOrigin(const btVector3& vec);
+        void updatePosition();
         void commitPositionChange();
         btCollisionObject* getCollisionObject();
         const btCollisionObject* getCollisionObject() const;
@@ -51,7 +50,8 @@ namespace MWPhysics
         std::map<int, osg::NodePath> mRecIndexToNodePath;
         bool mSolid;
         btVector3 mScale;
-        btTransform mLocalTransform;
+        osg::Vec3f mPosition;
+        osg::Quat mRotation;
         bool mScaleUpdatePending;
         bool mTransformUpdatePending;
         mutable std::mutex mPositionMutex;

apps/openmw/mwphysics/physicssystem.cpp

@@ -658,7 +658,7 @@ namespace MWPhysics
         ObjectMap::iterator found = mObjects.find(ptr);
         if (found != mObjects.end())
         {
-            found->second->setOrigin(Misc::Convert::toBullet(ptr.getRefData().getPosition().asVec3()));
+            found->second->updatePosition();
             mTaskScheduler->updateSingleAabb(found->second);
             return;
         }

apps/openmw/mwphysics/projectile.cpp

@@ -3,14 +3,11 @@
 #include <BulletCollision/CollisionShapes/btSphereShape.h>
 #include <BulletCollision/CollisionDispatch/btCollisionWorld.h>
 
-#include <LinearMath/btVector3.h>
-
 #include <components/misc/convert.hpp>
 
 #include "../mwworld/class.hpp"
 
 #include "collisiontype.hpp"
-#include "memory"
 #include "mtphysics.hpp"
 #include "projectile.hpp"
 
@@ -55,7 +52,9 @@ void Projectile::commitPositionChange()
     std::scoped_lock lock(mMutex);
     if (mTransformUpdatePending)
     {
-        mCollisionObject->setWorldTransform(mLocalTransform);
+        auto& trans = mCollisionObject->getWorldTransform();
+        trans.setOrigin(Misc::Convert::toBullet(mPosition));
+        mCollisionObject->setWorldTransform(trans);
         mTransformUpdatePending = false;
     }
 }
@@ -63,14 +62,14 @@ void Projectile::commitPositionChange()
 void Projectile::setPosition(const osg::Vec3f &position)
 {
     std::scoped_lock lock(mMutex);
-    mLocalTransform.setOrigin(Misc::Convert::toBullet(position));
+    mPosition = position;
     mTransformUpdatePending = true;
 }
 
 osg::Vec3f Projectile::getPosition() const
 {
     std::scoped_lock lock(mMutex);
-    return Misc::Convert::toOsg(mLocalTransform.getOrigin());
+    return mPosition;
 }
 
 bool Projectile::canTraverseWater() const

apps/openmw/mwphysics/projectile.hpp

@@ -6,12 +6,13 @@
 #include <mutex>
 #include <optional>
 
+#include <LinearMath/btVector3.h>
+
 #include "ptrholder.hpp"
 
 class btCollisionObject;
 class btCollisionShape;
 class btConvexShape;
-class btVector3;
 
 namespace osg
 {
@@ -76,7 +77,6 @@ namespace MWPhysics
         btConvexShape* mConvexShape;
 
         std::unique_ptr<btCollisionObject> mCollisionObject;
-        btTransform mLocalTransform;
         bool mTransformUpdatePending;
         bool mCanCrossWaterSurface;
         bool mCrossedWaterSurface;
@@ -84,6 +84,7 @@ namespace MWPhysics
         MWWorld::Ptr mCaster;
         MWWorld::Ptr mHitTarget;
         std::optional<btVector3> mWaterHitPosition;
+        osg::Vec3f mPosition;
         btVector3 mHitPosition;
         btVector3 mHitNormal;