Base GetColliding script functions on collisions detected by the movement solver

CHANGELOG.md

@@ -61,6 +61,7 @@
     Bug #7034: Misc items defined in one content file are not treated as keys if another content file uses them as such
     Bug #7042: Weapon follow animations that immediately follow the hit animations cause multiple hits
     Bug #7044: Changing a class' services does not affect autocalculated NPCs
+    Bug #7053: Running into objects doesn't trigger GetCollidingPC
     Bug #7054: Quests aren't sorted by name
     Bug #7064: NPCs don't report crime if the player is casting offensive spells on them while sneaking
     Bug #7077: OpenMW fails to load certain particle effects in .osgt format

apps/openmw/mwphysics/movementsolver.cpp

@@ -15,6 +15,7 @@
 #include "collisiontype.hpp"
 #include "constants.hpp"
 #include "contacttestwrapper.h"
+#include "object.hpp"
 #include "physicssystem.hpp"
 #include "projectile.hpp"
 #include "projectileconvexcallback.hpp"
@@ -243,11 +244,20 @@ namespace MWPhysics
             float hitHeight = tracer.mHitPoint.z() - tracer.mEndPos.z() + actor.mHalfExtentsZ;
             osg::Vec3f oldPosition = newPosition;
             bool usedStepLogic = false;
-            if (hitHeight < Constants::sStepSizeUp && !isActor(tracer.mHitObject))
+            if (!isActor(tracer.mHitObject))
             {
-                // Try to step up onto it.
-                // NOTE: this modifies newPosition and velocity on its own if successful
-                usedStepLogic = stepper.step(newPosition, velocity, remainingTime, seenGround, iterations == 0);
+                if (hitHeight < Constants::sStepSizeUp)
+                {
+                    // Try to step up onto it.
+                    // NOTE: this modifies newPosition and velocity on its own if successful
+                    usedStepLogic = stepper.step(newPosition, velocity, remainingTime, seenGround, iterations == 0);
+                }
+                auto* ptrHolder = static_cast<PtrHolder*>(tracer.mHitObject->getUserPointer());
+                if (Object* hitObject = dynamic_cast<Object*>(ptrHolder))
+                {
+                    hitObject->addCollision(
+                        actor.mIsPlayer ? ScriptedCollisionType_Player : ScriptedCollisionType_Actor);
+                }
             }
             if (usedStepLogic)
             {

apps/openmw/mwphysics/object.cpp

@@ -23,6 +23,7 @@ namespace MWPhysics
         , mPosition(ptr.getRefData().getPosition().asVec3())
         , mRotation(rotation)
         , mTaskScheduler(scheduler)
+        , mCollidedWith(ScriptedCollisionType_None)
     {
         mCollisionObject = BulletHelpers::makeCollisionObject(mShapeInstance->mCollisionShape.get(),
             Misc::Convert::toBullet(mPosition), Misc::Convert::toBullet(rotation));
@@ -166,4 +167,20 @@ namespace MWPhysics
         }
         return result;
     }
+
+    bool Object::collidedWith(ScriptedCollisionType type) const
+    {
+        return mCollidedWith & type;
+    }
+
+    void Object::addCollision(ScriptedCollisionType type)
+    {
+        std::unique_lock<std::mutex> lock(mPositionMutex);
+        mCollidedWith |= type;
+    }
+
+    void Object::resetCollisions()
+    {
+        mCollidedWith = ScriptedCollisionType_None;
+    }
 }

apps/openmw/mwphysics/object.hpp

@@ -18,6 +18,14 @@ namespace MWPhysics
 {
     class PhysicsTaskScheduler;
 
+    enum ScriptedCollisionType : char
+    {
+        ScriptedCollisionType_None = 0,
+        ScriptedCollisionType_Actor = 1,
+        // Note that this isn't 3, colliding with a player doesn't count as colliding with an actor
+        ScriptedCollisionType_Player = 2
+    };
+
     class Object final : public PtrHolder
     {
     public:
@@ -38,6 +46,9 @@ namespace MWPhysics
         /// @brief update object shape
         /// @return true if shape changed
         bool animateCollisionShapes();
+        bool collidedWith(ScriptedCollisionType type) const;
+        void addCollision(ScriptedCollisionType type);
+        void resetCollisions();
 
     private:
         osg::ref_ptr<Resource::BulletShapeInstance> mShapeInstance;
@@ -50,6 +61,7 @@ namespace MWPhysics
         bool mTransformUpdatePending = false;
         mutable std::mutex mPositionMutex;
         PhysicsTaskScheduler* mTaskScheduler;
+        char mCollidedWith;
     };
 }
 

apps/openmw/mwphysics/physicssystem.cpp

@@ -673,12 +673,13 @@ namespace MWPhysics
             // Slow fall reduces fall speed by a factor of (effect magnitude / 200)
             const float slowFall
                 = 1.f - std::clamp(effects.getOrDefault(ESM::MagicEffect::SlowFall).getMagnitude() * 0.005f, 0.f, 1.f);
-            const bool godmode = ptr == world->getPlayerConstPtr() && world->getGodModeState();
+            const bool isPlayer = ptr == world->getPlayerConstPtr();
+            const bool godmode = isPlayer && world->getGodModeState();
             const bool inert = stats.isDead()
                 || (!godmode && stats.getMagicEffects().getOrDefault(ESM::MagicEffect::Paralyze).getModifier() > 0);
 
             simulations.emplace_back(ActorSimulation{
-                physicActor, ActorFrameData{ *physicActor, inert, waterCollision, slowFall, waterlevel } });
+                physicActor, ActorFrameData{ *physicActor, inert, waterCollision, slowFall, waterlevel, isPlayer } });
 
             // if the simulation will run, a jump request will be fulfilled. Update mechanics accordingly.
             if (willSimulate)
@@ -708,6 +709,8 @@ namespace MWPhysics
                 changed = false;
             }
         }
+        for (auto& [_, object] : mObjects)
+            object->resetCollisions();
 
 #ifndef BT_NO_PROFILE
         CProfileManager::Reset();
@@ -782,10 +785,12 @@ namespace MWPhysics
         }
     }
 
-    bool PhysicsSystem::isActorCollidingWith(const MWWorld::Ptr& actor, const MWWorld::ConstPtr& object) const
+    bool PhysicsSystem::isObjectCollidingWith(const MWWorld::ConstPtr& object, ScriptedCollisionType type) const
     {
-        std::vector<MWWorld::Ptr> collisions = getCollisions(object, CollisionType_World, CollisionType_Actor);
-        return (std::find(collisions.begin(), collisions.end(), actor) != collisions.end());
+        auto found = mObjects.find(object.mRef);
+        if (found != mObjects.end())
+            return found->second->collidedWith(type);
+        return false;
     }
 
     void PhysicsSystem::getActorsCollidingWith(const MWWorld::ConstPtr& object, std::vector<MWWorld::Ptr>& out) const
@@ -890,7 +895,8 @@ namespace MWPhysics
             mDebugDrawer->addCollision(position, normal);
     }
 
-    ActorFrameData::ActorFrameData(Actor& actor, bool inert, bool waterCollision, float slowFall, float waterlevel)
+    ActorFrameData::ActorFrameData(
+        Actor& actor, bool inert, bool waterCollision, float slowFall, float waterlevel, bool isPlayer)
         : mPosition()
         , mStandingOn(nullptr)
         , mIsOnGround(actor.getOnGround())
@@ -917,6 +923,7 @@ namespace MWPhysics
         , mIsAquatic(actor.getPtr().getClass().isPureWaterCreature(actor.getPtr()))
         , mWaterCollision(waterCollision)
         , mSkipCollisionDetection(!actor.getCollisionMode())
+        , mIsPlayer(isPlayer)
     {
     }
 

apps/openmw/mwphysics/physicssystem.hpp

@@ -56,6 +56,7 @@ namespace MWPhysics
     class Actor;
     class PhysicsTaskScheduler;
     class Projectile;
+    enum ScriptedCollisionType : char;
 
     using ActorMap = std::unordered_map<const MWWorld::LiveCellRefBase*, std::shared_ptr<Actor>>;
 
@@ -79,7 +80,7 @@ namespace MWPhysics
 
     struct ActorFrameData
     {
-        ActorFrameData(Actor& actor, bool inert, bool waterCollision, float slowFall, float waterlevel);
+        ActorFrameData(Actor& actor, bool inert, bool waterCollision, float slowFall, float waterlevel, bool isPlayer);
         osg::Vec3f mPosition;
         osg::Vec3f mInertia;
         const btCollisionObject* mStandingOn;
@@ -102,6 +103,7 @@ namespace MWPhysics
         const bool mIsAquatic;
         const bool mWaterCollision;
         const bool mSkipCollisionDetection;
+        const bool mIsPlayer;
     };
 
     struct ProjectileFrameData
@@ -258,9 +260,8 @@ namespace MWPhysics
         /// Get the handle of all actors standing on \a object in this frame.
         void getActorsStandingOn(const MWWorld::ConstPtr& object, std::vector<MWWorld::Ptr>& out) const;
 
-        /// Return true if \a actor has collided with \a object in this frame.
-        /// This will detect running into objects, but will not detect climbing stairs, stepping up a small object, etc.
-        bool isActorCollidingWith(const MWWorld::Ptr& actor, const MWWorld::ConstPtr& object) const;
+        /// Return true if an object of the given type has collided with this object
+        bool isObjectCollidingWith(const MWWorld::ConstPtr& object, ScriptedCollisionType type) const;
 
         /// Get the handle of all actors colliding with \a object in this frame.
         void getActorsCollidingWith(const MWWorld::ConstPtr& object, std::vector<MWWorld::Ptr>& out) const;

apps/openmw/mwworld/worldimp.cpp

@@ -2425,15 +2425,12 @@ namespace MWWorld
 
     bool World::getPlayerCollidingWith(const MWWorld::ConstPtr& object)
     {
-        MWWorld::Ptr player = getPlayerPtr();
-        return mPhysics->isActorCollidingWith(player, object);
+        return mPhysics->isObjectCollidingWith(object, MWPhysics::ScriptedCollisionType_Player);
     }
 
     bool World::getActorCollidingWith(const MWWorld::ConstPtr& object)
     {
-        std::vector<MWWorld::Ptr> actors;
-        mPhysics->getActorsCollidingWith(object, actors);
-        return !actors.empty();
+        return mPhysics->isObjectCollidingWith(object, MWPhysics::ScriptedCollisionType_Actor);
     }
 
     void World::hurtStandingActors(const ConstPtr& object, float healthPerSecond)