33 Commits (18ef32ca82bd9c3cfcdc9f420131e4697ee054c9)

Author	SHA1	Message	Date
wareya	18ef32ca82	values for this higher than sGroundOffset cause jittering on some surface; use safe-seeming value slightly less than sGroundOffset	3 years ago
fredzio	5bd921fa3a	Restore pre-async handling of absolute actors positionning ... One of the issue since the introduction of async physics is the quirky handling of scripted moves. Previous attempt to account for them was based on detecting changes in actor position while the physics thread is running. To this end, semantics of Actor::updatePosition() (which is responsible for set the absolute position of an actor in the world) was toned down to merely store the desired position, with the physics system actually responsible for moving the actor. For the cases were complete override of the physics simulation was needed, I introduced Actor::resetPosition(), which actually have same semantics as original updatePosition(). This in turn introduced a loads of new bugs when the weakened semantics broke key assumptions inside the engine (spawning, summoning, teleport, etc). Instead of tracking them down, count on the newly introduced support for object relative movements in the engine (World::moveObjectBy) to register relative movements and restore original handling of absolute positionning. Changes are relatively small: - move resetPosition() content into updatePosition() - call updatePosition() everywhere it was called before - remove all added calls to the now non-existing resetPosition() tldr; ditch last month worth of bug introduction and eradication and redo it properly	3 years ago
fredzio	4e7c9b6696	Embed physics simulation results inside of actor class. ... This gives finer control over reseting positions (switch off tcl is no longer glitchy) and solve most of the erroneous usage of stale World::Ptr indicated by: "Error in frame: moveTo: object is not in this cell"	3 years ago
fredzio	7bae6691b6	Introduce World::moveObjectBy() function to translate an object relatively to ... its current position. Use it in relevant MWScripts opcode (move and moveworld). Remove the fragile detection of scripted translation from PhysicsTaskScheduler. No user visible change, just a more robust mechanism.	3 years ago
fredzio	ea2ba27084	Move the moment when the actor origin is saved before simulation so to ... be sure the simulation is over. Otherwise, if the simulation is too slow the position is wrong, and the actors would jump back and forth between old and new position instead of actually moving.	4 years ago
Frederic Chardon	bb5213670c	Use bigger hammer to set Actor's position after teleporting. Otherwise traceDown() would use old collision object transform and gives incorrect results, making the Actor "fall" in the new position.	4 years ago
fredzio	d64ed6cf53	Get rid of the StandingActorsMap. Just embed the necessary info into ... Actor class.	4 years ago
fredzio	e5fa457fe7	Properly account for interleaved move of actors. ... Before this change, if an actor position was changed while the physics simulation was running, the simulation result would be discarded. It is fine in case of one off event such as teleport, but in the case of scripts making use of this functionality to make lifts or conveyor (such as Sotha Sil Expanded mod) it broke actor movement. To alleviate this issue, at the end of the simulation, the position of the Actor in the world is compared to the position it had at the beginning of the simulation. A difference indicate a force move occured. In this case, the Actor mPosition and mPreviousPosition are translated by the difference of position. Since the Actor position will be really set while the next simulation runs, we save it in the mNextPosition field.	4 years ago
fredzio	3c2504b442	Process movement queue in one or several background threads ... Before movement calculation, the main thread prepare a vector of ActorFrameData, which contains all data necessary to perform the simulation, and feed it to the solver. At the same time it fetches the result from the previous background simulation, which in turn is used by the game mechanics. Other functions of the physics system (weapon hit for instance) interrupt the background simulation, with some exceptions described below. The number of threads is controlled by the numeric setting [Physics] async num threads In case 'async num threads' > 1 and Bullet doesn't support multiple threads, 1 async thread will be used. 0 means synchronous solver. Additional settings (will be silently switched off if async num threads = 0) [Physics] defer aabb update Update AABBs of actors and objects in the background thread(s). It is not an especially costly operation, but it needs exclusive access to the collision world, which blocks other operations. Since AABB needs to be updated for collision detection, one can queue them to defer update before start of the movement solver. Extensive tests on as much as one installation (mine) show no drawback having that switched on. [Physics] lineofsight keep inactive cache Control for how long (how many frames) the line of sight (LOS) request will be kept updated. When a request for LOS is made for the first time, the background threads are stopped to service it. From now on, the LOS will be refreshed preemptively as part of the background routine until it is not required for lineofsight keep inactive cache frames. This mean that subsequent request will not interrupt the background computation.	4 years ago
fredzio	4ef36973fb	Make the Actor class manage its collision object and position.	4 years ago
fredzio	82da2045a9	Non functionnal changes in preparation for async physics feature	4 years ago
elsid	43b39e8418	Use not scaled player half extents as default to find path	5 years ago
Bret Curtis	14c93b3df0	Revert "Merge pull request #2204 from elsid/fix_navigator_update" ... This reverts commit 26fb0e7a0f, reversing changes made to 42b2391303.	5 years ago
elsid	c066ee9dc5	Use not scaled player half extents as default to find path	5 years ago
elsid	c866fdff86	Move physics object, heightfield, ptrholder into separate files	6 years ago
scrawl	99ffaafe30	Revert "Merge pull request #1701 from akortunov/standfix" ... This reverts commit da47fc79f5, reversing changes made to 7324bd368f.	6 years ago
Andrei Kortunov	3636cf2015	Do not apply queue movement for standing actors	6 years ago
Ewan Higgs	38a2de3c51	convert std::autor_ptr to std::unique_ptr, originally by Ewan Higgs and updated by Bret Curtis	7 years ago
scrawl	fb073e5c14	Avoid unnecessary AABB update for rotationally invariant collision shapes	7 years ago
scrawl	b3d5c2bd7f	Use the actor's collision shape in findGround() ... The cylinder base is no longer appropriate as of the change to capsules. This also works around a bug when tracing a small cylinder/box shape apparently introduced with bullet 2.86.	7 years ago
scrawl	541fbb4792	Movement solver: add usage of 'on slope' flag to improve handling of steep slopes ... Previously we were handling 'on slope' synonymously with 'in air' which caused some odd effects. Practical changes: - Sliding down a slope no longer applies fall damage. - Fixed a climbing exploit that would allow climbing steep slopes with repeated use of the Jump function.	7 years ago
Aussiemon	b794aa7c2f	Helper methods for updateCollisionMask(), prevent water collision being removed twice, remove Bullet 2.8.5 methods	8 years ago
scrawl	383524c688	Run physics in fixed timesteps, use the remainder to interpolate between current and previous state ... Based on http://gafferongames.com/game-physics/fix-your-timestep/	8 years ago
scrawl	3552b3a82c	Don't create a BulletShapeInstance for actors	8 years ago
scrawl	795032621c	Use a ConstPtr for the ActorMap and ObjectMap	9 years ago
scrawl	8cf57ef6ac	Move BulletShapeManager and BulletShape to resource/	9 years ago
scrawl	a5f8ffb83d	aimToTarget: Fix the collision box translation not being taken into account	9 years ago
scrawl	bd9dc58560	Use the correct scale for actor swim height (Fixes #2833)	9 years ago
scrawl	1f00174c02	Use a btCollisionWorld instead of btDiscreteDynamicsWorld ... Slightly improves performance, since we no longer need to stepSimulation(). We don't use any Dynamics (yet).	9 years ago
scrawl	85345e663a	Restore getHitContact	9 years ago
scrawl	2bc95df265	Actor collision object placement fix	9 years ago
scrawl	65f0195c71	Readded animated collision shape support	9 years ago
scrawl	47758c11cd	Readded collision objects and movement physics	9 years ago