This appears to now give better ODE physics response (less sinking into the ground, etc.)
Please change it back if this is actually a bad idea for some reason
* Change the PhysicsCollision callback for objects to send full contact point information. This will be used to calculate the collision plane for avatars
* Send the physics engine velocity in terse updates, not the current force being applied to the avatar. This should fix several issues including crouching through the floor and walking through walls
* Added contacts_per_collision to the ODE config section. This allows you to reduce the maximum number of contact points ODE will generate per collision and reduce the size of the array that stores contact structures
* Added a commented out call to Watchdog.UpdateThread() in OdeScene. If it turns out that loading a large OAR file or some other operation is timing out the heartbeat thread, we'll need to uncomment it
* The broken avatar may not be able to move, but it won't stop simulate from pressing on now. And, the simulator will try to destroy the avatar's physics proxy and recreate it again... but if this is what I think it is, it may not help.
* This causes time to be counted in ODECharacter and, when a collision occurs, the physics scene will report the collisions only if the the difference of last time it reported the collisions from now was more then the set ms.
* This is cool because the time accrues while collisions are not taking place and when they do take place again, you get an immediate update.
Eliminate dynamic capsule wobble. Instead introduce a small, fixed
tilt, and allow the tilt to rotate with the avatar while moving; the
tilt always faces away from the direction of avatar movement. The
rotation while moving should eliminate direction-dependent behavior
(e.g. only being able to climb on top of prims from certain directions).
Falling animation is still too frequently invoked.
Ideally the tilt should be completely eliminated, but doing so
currently causes the avatar to fall through the terrain.
* This also contains some inactive preliminary code for disconnecting combined regions that will be used to make one root region a virtual region of a new root region.
* Test for prim obstructions between the avatar and camera. If there are obstructions, inform the client to move the camera closer. This makes it so that walls and objects don't obstruct your view while you're moving around. Try walking inside a hollowed tori. You'll see how much easier it is now because your camera automatically moves closer so you can still see.
* Created a way to know if the user's camera is alt + cammed or just following the avatar.
* Changes IClientAPI interface by adding SendCameraConstraint(Vector4 CameraConstraint)
This fix re-introduces a small tilt into the capsule to prevent
avatar falling through terrain. Re-introduction of the tilt means
that some direction-dependent behavior when walking over prims, but
I have tried to minimize this.
Additionally this commit allows the capsule to wobble slightly when
being pushed around the terrain. This should make walking over prims
easier, as the capsule can wobble and glide diagonally over the prim's
edge, instead of rigidly being stopped vertically against the prim's
face.
Set av_capsule_tilted to false in opensim.ini. Default is true, so there is
no change in avatar behavior (and no breaking of existing content which
relies on the tilted capsule).
This commit straightens up the avatar capsule so it behaves consistently
(e.g. same collision behavior against prims regardless of which direction
the avatar is coming from; ability to fit through narrow doorways).
Please note this introduces other side effects which have not been fixed.
In particular:
* The avatar frequently falls through the terrain if it is not flat, though
the avatar behaves pretty well on flat terrain. This requires investigation
of the ode terrain collider.
* The apparent foot position of the avatar with respect to the ground
is changed. This requires investigation of the avatar height/capsule height.
Please consider this as work in progress.
Eat collision errors --- NOTE: this fix might be naive, it seems to
have helped us getting to 81 avatars (whereas we'd crash with 20
before), but it sure would benefit from some check-over by a person
skilled in the art of ODE physics.
* Tweak the LLSetStatus results in the ODEPlugin. Hopefully it's a little less unstable.
* ODEPlugin is using experimental math for LLSetStatus, use with caution! :)
* WebStatsModule doesn't crash on restart. GodsModule doesn't crash when there is no Dialog Module. LLUDPServer doesn't crash when the Operation was Aborted.
* ODEPlugin does 'Almost NaN' sanity checks.
* ODEPlugin sacrifices NaN avatars to the NaN black hole to appease it and keep it from sucking the rest of the world in.
* Now validating input to the Physics scene and warning when something is awry.
* This should help nail down that Non Finite Avatar Position Detected issue.
* This may help one of the symptoms or mantis 3363 , however it probably won't solve the occasional NonFinite Avatar Position detected.. issues that some people see. That is probably an entirely different issue(NaN).
* In most cases, the setting in OpenSim.ini.example is taken as the canonical one since this is the file virtually everyone ends up using
* OpenSim will start up with a blank OpenSim.ini, in which case sqlite is the default database (as before)
* Add some comments to the Wind Module
* Add the BinBVH decoder/encoder as a scene object (to encode/decode animations programmatically).
* Add m_sitState for upcoming code to improve sit results.
* I'm concerned however that the 'minimum fly height' should really be implemented in ScenePresence and not in the specific physics plugin so that all of the physics plugins can take advantage of it and if desired, a person could swap out the 'minimum fly height' functionality with other functionality.
llSetHoverHeight() should not clamp the x/y position of an object the way MoveTo does,
and it should recalculate the absolute height to hover at as an object moves to reflect
the current ground/water height under it.
Correctly implementing required adjusting the Physics interfaces and implementing at
the physics plug-in level. The attached is a patch that correctly implements
llSetHoverHeight() including updates to the ODE physics plug-in.
* Added log4net dependency to physxplugin in prebuild.xml.
* Added missing m_log fields to classes.
* Replaced Console.WriteLine with appropriate m_log.Xxxx
* Tested that nant test target runs succesfully.
* Tested that local opensim sandbox starts up without errors.
* This fixes crashing on large sets of physical prims because of stack collisions (assuming you follow the directions on linux for starting ode with ulimit). After the maximum joints are created, objects will start to fall through the ground and be disabled. Not the best solution, but it's better then a crash caused by a stack collision with the process exceeding the maximum available memory/recursions per thread.
* Make a clean region, make a stack of 5000 prim, 20 layers high. Make them physical, *SLOW*, but no crash.
* The actual AABB of the heightfield on the Z is now determined by the minimum and maximum heightfield value in the terrain array (assuming it's a reasonable number). This might optimize collisions in simulators that have a small difference between minimum and maximum heightfield values.
* If you log-in while the simulator is starting up, you won't be able to move and the sim stats will say 0 FPS, and 0 Physics Frames and you may see only terrain. Once the sim finishes starting up, it'll all resume as normal.
- Adapted code to match the corrected signatures
- Fixes Mantis #2934. Hopefully.
Note: Physics on linked objects still don't work correctly:
It doesn't crash the region anymore, but the example object in
the mentioned mantis now falls through the ground.
On a call of llVolumeDetect(1) (or any other number !=0) volume
detection is enabled. Together with VD, the phantom flag is set to the GUI.
On a call of llVolumeDetect(0), vd detection is switched of again,
also the phantom state is removed. On a call to llSetState(STATE_PHANTOM,
false) while VD is active, also VD is switched off. The same is true for
unchecking the phantom flag via GUI. This allows to take back VD without
the need to script just by removing the phantom flag.
Things missing in this patch: persistance of the volume-detection flag.
This needs more discussion and will be included in another patch soon.
* This pushes an identifier for the OpenSim scene to the physics scene. This allows log messages from the physics scene to identify which OpenSim scene they relate to.
* Thanks Gerhard
* Warning! Physics API change. This means that the NBodySimulation needs to be updated!
* PhysicsActor -> void SetVolumeDetect(int) needs to go into classes that use PhysicsActor as their base class.
* Fixed a bug that caused physics proxies to be scattered when you link an object.
* Single physical prim work exactly the same as before, just linked physical prim will have changed.
* Initializes ODE only when a scene is grabbed rather than on plugin load. This means we don't initialize ode if that physics engine is not used, and it allows other ode use
plugins to be used instead.
* Implement the linear impulse portion of llPushObject. We should have a lsl compatible implementation of that portion of the push. Angular.. well. still have yet to implement a torque accumulator.
* llPushObject respects the region and parcel settings for Restrict Push, it also respects GodMode as is defined in the LSL spec.
* Additionally, you can probably get more physical prim now together.. though, I think this puts us back on par with where we were in the beginning of the year on number of physical objects. Experiment. Make videos. Send Feedback. Enjoy.
* If you are hosting many regions on a single instance, you will probably notice a decrease in region startup time and maybe a slight increase in performance.
* Single regions won't notice anything different
* Re-enabled the native ODE prim types when possible
* Fixed several invalid assumptions in the prim recycle process.
* Added better message for 'reused a disposed physicsactor'
* Added a way to recover from errors during collision_optimized
* Added a way to recover from an error condition where prim_geom wasn't reset properly
* If you're experiencing knee bendiness try the windows settings, as the *nix settings seem to now be incorrect. (this update does that, but you may have your own opensim.ini settings active.
* Mac users, pray to chi11ken to make you a .dylib version
* This is semi-tuned and post teravus hack. (Though I didn't apply the terrain pitting fix hack. I'm still deciding if it's necessary as there was a lot of work over the past several months on the heightfield collider.
* Please use '--enable-shared --disable-demos --disable-asserts' if you are building your own libode in the configure step. Asserts are pretty much useless for use with .NET
* This also updates ODE.NET as, there were some API changes in May that were just added to ODE.NET today.
* This is a HUGE OMG update and will definitely have unknown side effects.. so this is really only for the strong hearted at this point. Regular people should let the dust settle.
* This has been tested to work with most basic functions. However.. make sure you back up 'everything' before using this. It's that big!
* Essentially we're back at square 1 in the testing phase.. so lets identify things that broke.
Small prims now get a full mesh if they are physical
Fixed a logic bug that was preventing many prim meshes from having excess memory cleaned up
Switched to more conservative method of vertex and triangle list trimming to prevent possible crash
* Some situations do not match the client's render of the tori, we know and are working on it. This is an initial support patch, so expect it to not be exact.
* Some tapers are acting slightly odd. Will fix.
* This includes if you want to mesh sculpties and the Level of detail on the sculptie meshing for non physical and a separate LOD on physical sculpties.
* The options range from gravity.. to avatar movement speed, to friction management.. to object density.. to update throttling.
* The main purpose of this is to provide configuration options for ODE and other physics plug-ins that are advanced enough to be able to be configured.
* Detaching from right clicking in world, detaches to your inventory.
* If you go up to a prim and attach it from in world, it appears in your inventory.
* Attachment placement is saved when you detach them.
* Choosing wear remembers your last attachment point from inventory.
* Wrote a method to update an inventory item's asset and sends the updated inventory item to the Client
* Wrote a recursive method to find the folder of a known existing inventory item.
* Removed a block on physics object position on creation. This might crash a region or two, let us know via Mantis if your region crashes because of a physics out of bounds error.
* Drop doesn't work. The menu item doesn't even come up. Don't know why :P.
* Your friends can see your attachments now. People who appear in the sim after you've attached something can also see your attachments.
* You can position & rotate your attachments now. Positions do *not* save.
* You can detach attachments now the regular way.
* Attachments do not cross into other regions with you..(this isn't too far off)
* Updated ODE to not request terse updates on child prim.
* Currently if you apply that to only one or two axis you get unpredictable and sometimes explosive results.
* Three axis works well enough to play with it anyway. More work is needed here.
* Fixed an incorrectly named method in ODE.NET
* It doesn't generate at_target events, because they don't exist yet in the script engine.
* The Tau is different, however, compatible with scripts I tested.
* Not perfect... but pretty good.
* Added osSetPrimFloatOnWater(BOOL) to make Physical prim float at the water level.
* osSetPrimFloatOnWater(TRUE); or osSetPrimFloatOnWater(FALSE);
* By default, prim do not float at the water level.
* More work is needed on the floating, but it's a start.
* ODE: Added support for larger box stacks. (they're slow, but they work)
* ODEPlugin no longer tries to 'catch up' with the simulator frame rate if it gets behind. Catching up was causing a lot of problems with larger box stacks and other things that stall the simulator (like saving prim in the datastore)
* To play with this you must link your prim before setting it physical, otherwise they won't link in the physics engine properly. This will also be fixed.
* Currently the linked prim are extremely unstable because I have yet to implement combining of forces with the same normal. This will also be fixed. In fact, the whole PhysicsActor, ODEPrim relationship will be reworked to consider groups from the get-go.
* This implementation is better then it crashing your sim, so I'm commiting it for now.
** Added more realistic calculations of mass for the rest of the supported prim shapes+holes+cuts+tapers. Previously they were the generic height * width * length. Spheres roll (Angular velocity) more realistically, etc.
Teravus Ovares (Dan Olivares)