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path: root/modules/bullet/btRayShape.cpp
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2019-03-27KinematicBody performance and quality improvementsDaniel Rakos
With this change finally one can use compound collisions (like those created by Gridmaps) without serious performance issues. The previous KinematicBody code for Bullet was practically doing a whole bunch of unnecessary calculations. Gridmaps with fairly large octant sizes (in my case 32) can get up to 10000x speedup with this change (literally!). I expect the FPS demo to get a fair speedup as well. List of fixes and improvements: - Fixed a general bug in move_and_slide that affects both GodotPhysics and Bullet, where ray shapes would be ignored unless the stop_on_slope parameter is disabled. Not sure where that came from, but looking at the 2D physics code it was obvious there's a difference. - Enabled the dynamic AABB tree that Bullet uses to allow broadphase collision tests against individual shapes of compound shapes. This is crucial to get good performance with Gridmaps and in general improves the performance whenever a KinematicBody collides with compound collision shapes. - Added code to the broadphase collision detection code used by the Bullet module for KinematicBodies to also do broadphase on the sub-shapes of compound collision shapes. This is possible thanks to the dynamic AABB tree that was previously disabled and it's the change that provides the biggest performance boost. - Now broadphase test is only done once per KinematicBody in Bullet instead of once per each of its shapes which was completely unnecessary. - Fixed the way how the ray separation results are populated in Bullet which was completely broken previously, overwriting previous results and similar non-sense. - Fixed ray shapes for good now. Previously the margin set in the editor was not respected at all, and the KinematicBody code for ray separation was complete bogus, thus all previous attempts to fix it were mislead. - Fixed an obvious bug also in GodotPhysics where an out-of-bounds index was used in the ray result array. There are a whole set of other problems with the KinematicBody code of Bullet which cost performance and may cause unexpected behavior, but those are not addressed in this change (need to keep it "simple"). Not sure whether this fixes any outstanding Github issues but I wouldn't be surprised.
2019-02-19Fix RayShape collision when used with a KinematicBody (Bullet Physics)Daniel Rakos
- Added code handling non-compound collision to recover_from_penetration_ray() which is now needed due to the optimization avoiding the use of compound collisions when only a single collision shape is used. - Removed arbitrary margin applied in the collision algorithm of RayShapes which causes jittered movement. For lack of a better replacement and for lack of any explanation on why it has been introduced, it's now using the shape's margin property instead which is small enough to not show visible jitter. - Tried to get rid of inconsistent uses of the collision margin. - Removed hack from GodotDeepPenetrationContactResultCallback::addContactPoint for RayShape collision as it's no longer needed as the collision algorithm of RayShapes correctly calculates the contact normal for a while now. Fixes #25227.
2019-01-01Update copyright statements to 2019Rémi Verschelde
Happy new year to the wonderful Godot community!
2018-09-12Make core/ includes absolute, remove subfolders from include pathRémi Verschelde
This allows more consistency in the manner we include core headers, where previously there would be a mix of absolute, relative and include path-dependent includes.
2018-02-19Improved ray shape (2D and 3D) by addiing the possibility to act as regular ↵Andrea Catania
shape
2018-01-05Add missing copyright headers and fix formattingRémi Verschelde
Using `misc/scripts/fix_headers.py` on all Godot files. Some missing header guards were added, and the header inclusion order was fixed in the Bullet module.
2018-01-01Update copyright statements to 2018Rémi Verschelde
Happy new year to the wonderful Godot community!
2017-12-07Style: Apply new clang-format 5.0 style to all filesRémi Verschelde
2017-11-04Bullet physics engine implementationAndreaCatania
This is a bullet wrapper that allows Godot to use Bullet physics and benefit about all features. Also it support all specific Godot physics functionality like multi shape body, areas, RayShape, etc.. It improve the Joints, Trimesh shape, and add support to soft body even if Godot is not yet ready to it.