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Merge branch 'collisionprediction' into 'master'

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Avoid recomputing collision prediction things an extra N times (#8548)

Closes #8548

See merge request OpenMW/openmw!4801
This commit is contained in:
psi29a 2025-07-27 16:30:11 +00:00
commit c8aa644111
1 changed files with 25 additions and 10 deletions
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35
apps/openmw/mwmechanics/actors.cpp
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@ -1326,19 +1326,37 @@ namespace MWMechanics
const MWWorld::Ptr player = getPlayer();
const MWBase::World* const world = MWBase::Environment::get().getWorld();
struct CacheEntry
{
MWWorld::Ptr mPtr;
float mMaxSpeed;
osg::Vec3f mHalfExtents;
Movement& mMovement;
};
std::vector<CacheEntry> cache;
cache.reserve(mActors.size());
for (const Actor& actor : mActors)
{
if (actor.isInvalid())
continue;
const MWWorld::Ptr& ptr = actor.getPtr();
const MWWorld::Class& cls = ptr.getClass();
cache.push_back({ ptr, cls.getMaxSpeed(ptr), world->getHalfExtents(ptr), cls.getMovementSettings(ptr) });
}
for (const CacheEntry& cached : cache)
{
const MWWorld::Ptr& ptr = cached.mPtr;
if (ptr == player)
continue; // Don't interfere with player controls.
const float maxSpeed = ptr.getClass().getMaxSpeed(ptr);
const float maxSpeed = cached.mMaxSpeed;
if (maxSpeed == 0.0)
continue; // Can't move, so there is no sense to predict collisions.
Movement& movement = ptr.getClass().getMovementSettings(ptr);
Movement& movement = cached.mMovement;
const osg::Vec2f origMovement(movement.mPosition[0], movement.mPosition[1]);
const bool isMoving = origMovement.length2() > 0.01;
if (movement.mPosition[1] < 0)
@ -1379,7 +1397,7 @@ namespace MWMechanics
const osg::Vec2f baseSpeed = origMovement * maxSpeed;
const osg::Vec3f basePos = ptr.getRefData().getPosition().asVec3();
const float baseRotZ = ptr.getRefData().getPosition().rot[2];
const osg::Vec3f halfExtents = world->getHalfExtents(ptr);
const osg::Vec3f& halfExtents = cached.mHalfExtents;
const float maxDistToCheck = isMoving ? maxDistForPartialAvoiding : maxDistForStrictAvoiding;
float timeToCheck = maxTimeToCheck;
@ -1392,15 +1410,13 @@ namespace MWMechanics
float angleToApproachingActor = 0;
// Iterate through all other actors and predict collisions.
for (const Actor& otherActor : mActors)
for (const CacheEntry& otherCached : cache)
{
if (otherActor.isInvalid())
continue;
const MWWorld::Ptr& otherPtr = otherActor.getPtr();
const MWWorld::Ptr& otherPtr = otherCached.mPtr;
if (otherPtr == ptr || otherPtr == currentTarget)
continue;
const osg::Vec3f otherHalfExtents = world->getHalfExtents(otherPtr);
const osg::Vec3f& otherHalfExtents = otherCached.mHalfExtents;
const osg::Vec3f deltaPos = otherPtr.getRefData().getPosition().asVec3() - basePos;
const osg::Vec2f relPos = Misc::rotateVec2f(osg::Vec2f(deltaPos.x(), deltaPos.y()), baseRotZ);
const float dist = deltaPos.length();
@ -1413,8 +1429,7 @@ namespace MWMechanics
if (deltaPos.z() > halfExtents.z() * 2 || deltaPos.z() < -otherHalfExtents.z() * 2)
continue;
const osg::Vec3f speed = otherPtr.getClass().getMovementSettings(otherPtr).asVec3()
* otherPtr.getClass().getMaxSpeed(otherPtr);
const osg::Vec3f speed = otherCached.mMovement.asVec3() * otherCached.mMaxSpeed;
const float rotZ = otherPtr.getRefData().getPosition().rot[2];
const osg::Vec2f relSpeed
= Misc::rotateVec2f(osg::Vec2f(speed.x(), speed.y()), baseRotZ - rotZ) - baseSpeed;