Commit Graph

46 Commits

Author SHA1 Message Date
Campbell Barton
69ddc5eb99 make bullet optional again 2013-01-23 07:26:39 +00:00
Campbell Barton
97d4fb4161 code cleanup: make header defines more consistent, JOYSENSOR header guard had a typo too. 2012-10-09 13:36:42 +00:00
Benoit Bolsee
dfc19a1ff7 BGE patch #28476: Character object physics type
===============================================
This patch adds a new "Character" BGE physics type which uses Bullet's btKinematicCharacter for simulation instead of full-blown dynamics. It is appropiate for (player-controlled) characters, for which the other physics types often result unexpected results (bouncing off walls, sliding etc.) and for which simple kinematics offers much more precision.

"Character" can be chosen like any other physics type in the "Physics" section of the properties window. Current settings for tweaking are "Step Height" (to make the object automatically climb small steps if it collides with them), "Fall Speed" (the maximum speed that the object can have when falling) and "Jump Speed", which is currently not used.

See http://projects.blender.org/tracker/?func=detail&atid=127&aid=28476&group_id=9
for sample blends and a discussion on the patch: how to use it and what influences the behavior of the character object.

Known problem: there is a crash if the "compound" option is set in the physics panel of the Character object.
2012-05-28 21:36:29 +00:00
Campbell Barton
b8e019d839 use __ prefix on header guards to avoid mixing up defines with api functions / classes. 2012-02-23 10:41:31 +00:00
Campbell Barton
4a04f72069 remove $Id: tags after discussion on the mailign list: http://markmail.org/message/fp7ozcywxum3ar7n 2011-10-23 17:52:20 +00:00
Nathan Letwory
5138615554 doxygen: entries for blenderroutines, converter, expressions, gamelogic, gameplayer, ketsji 2011-02-22 10:33:14 +00:00
Campbell Barton
f49fc58df6 enable building the game engine without bullet for scons & cmake 2010-10-10 07:01:56 +00:00
Benoit Bolsee
ad70072009 BGE patch #22623 applied: new bound type: Capsule. 2010-08-28 20:56:54 +00:00
Dalai Felinto
c6bec43330 reverting previous commit from Mitchell. His commit went to the trunk instead of the branch :)
svn merge -r 29067:29066 https://svn.blender.org/svnroot/bf-blender/trunk/blender
2010-05-29 21:31:57 +00:00
Mitchell Stokes
9d3157eed0 Reversing the last merge because I botched it. 2010-05-29 21:22:24 +00:00
Campbell Barton
081c1205a3 correct fsf address 2010-02-12 13:34:04 +00:00
Campbell Barton
777a0d78e7 svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r21899:21908 2009-07-25 23:16:45 +00:00
Campbell Barton
e9ca43521f BGE Physics
Add support back for reinstancePhysics mesh, a frequently requested feature in the BGE forums.
from what I can tell Sumo supported this but bullet never did.
Currently only accessible via python at the moment.

- rigid body, dynamic, static types work.
- instanced physics meshes are modified too.
- compound shapes are not supported.

Physics mesh can be re-instanced from...
* shape keys & armature deformations
* subsurf (any other modifiers too)
* RAS_TexVert's (can be modified from python)

Moved the reinstancePhysicsMesh functions from RAS_MeshObject into KX_GameObject since the physics data is stored here.

video and blend file demo.
http://www.graphicall.org/ftp/ideasman42/reinstance.ogv
http://www.graphicall.org/ftp/ideasman42/reinstance_demo.blend
2009-07-25 22:57:29 +00:00
Campbell Barton
8ead648fd1 Spring Cleaning
* removed radiosity render code, DNA and RNA (left in radio render pass options), we'll get GI to replace this probably, better allow baking to vertex colors for people who used this.
* removed deprecated solid physics library, sumo integrations and qhull, a dependency
* removed ODE, was no longer being build or supported
* remove BEOS and AMIGA defines and references in Makefiles.
2009-06-21 16:18:38 +00:00
Brecht Van Lommel
c8b4cf9206 2.50:
svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r19820:HEAD

Notes:
* Game and sequencer RNA, and sequencer header are now out of date
  a bit after changes in trunk.
* I didn't know how to port these bugfixes, most likely they are
  not needed anymore.
  * Fix "duplicate strip" always increase the user count for ipo.
  * IPO pinning on sequencer strips was lost during Undo.
2009-06-08 20:08:19 +00:00
Erwin Coumans
eb8c5f3272 Set default constraint solver mode more compatible to Blender 2.48 settings, this fixes rigid body stacking in this blend file:
http://blenderartists.org/forum/showpost.php?p=1382653&postcount=102

(todo: expose this setting in World setting GUI)

Expose contact processing threshold in Advanced GUI, next to rigid body margin, called CPT.
Default to 1, makes rigid body stacking a bit more stable, smaller values makes sliding easier (at the cost of easier jittering).
Disabled for 'dynamic' objects that don't rotate, because characters etc. always need smooth sliding.
2009-05-23 22:35:47 +00:00
Benoit Bolsee
3ea1c1b4b6 BGE: new sensor object to generalize Near and Radar sensor, static-static collision capbility.
A new type of "Sensor" physics object is available in the GE for advanced
collision management. It's called Sensor for its similarities with the
physics objects that underlie the Near and Radar sensors.
Like the Near and Radar object it is:
- static and ghost
- invisible by default
- always active to ensure correct collision detection
- capable of detecting both static and dynamic objects
- ignoring collision with their parent
- capable of broadphase filtering based on:
  * Actor option: the collisioning object must have the Actor flag set to be detected
  * property/material: as specified in the collision sensors attached to it
  Broadphase filtering is important for performance reason: the collision points
  will be computed only for the objects that pass the broahphase filter.
- automatically removed from the simulation when no collision sensor is active on it

Unlike the Near and Radar object it can:
- take any shape, including triangle mesh
- be made visible for debugging (just use the Visible actuator)
- have multiple collision sensors using it

Other than that, the sensor objects are ordinary objects. You can move them
freely or parent them. When parented to a dynamic object, they can provide
advanced collision control to this object.

The type of collision capability depends on the shape:
- box, sphere, cylinder, cone, convex hull provide volume detection.
- triangle mesh provides surface detection but you can give some volume
  to the suface by increasing the margin in the Advanced Settings panel.
  The margin applies on both sides of the surface.

Performance tip:
- Sensor objects perform better than Near and Radar: they do less synchronizations
  because of the Scenegraph optimizations and they can have multiple collision sensors
  on them (with different property filtering for example).
- Always prefer simple shape (box, sphere) to complex shape whenever possible.
- Always use broadphase filtering (avoid collision sensor with empty propery/material)
- Use collision sensor only when you need them. When no collision sensor is active
  on the sensor object, it is removed from the simulation and consume no CPU.

Known limitations:
- When running Blender in debug mode, you will see one warning line of the console:
  "warning btCollisionDispatcher::needsCollision: static-static collision!"
  In release mode this message is not printed.
- Collision margin has no effect on sphere, cone and cylinder shape.

Other performance improvements:
- Remove unnecessary interpolation for Near and Radar objects and by extension
  sensor objects.
- Use direct matrix copy instead of quaternion to synchronize orientation.

Other bug fix:
- Fix Near/Radar position error on newly activated objects. This was causing
  several detection problems in YoFrankie
- Fix margin not passed correctly to gImpact shape.
- Disable force/velocity actions on static objects
2009-05-17 12:51:51 +00:00
Benoit Bolsee
d95a109990 BGE modifier: generate correct physic shape, share static derived mesh, share display list.
This commit completes the support for modifiers in the BGE.
- The physic shape is generated according to the derived mesh. 
  This is true for all types of shapes and all types of 
  objects except soft body.
- Optimization for static derived mesh (mesh with modifiers
  but no armature and no shape keys). Replicas will share
  the derived mesh and the display list: less memory and
  faster rendering. With this optimization, the static 
  derived mesh will render as fast as if the modifiers were
  applied.

Known Limits:
- Sharing of mesh and display list is only possible between
  in-game replicas or dupligroup. If you want to instantiate
  multiple objects with modifiers, use dupligroup to ensure
  best memory and GPU utilization.
- rayCast() will interact with the derived mesh as follow:
  Hit position and hit normal are the real values according
  to the derived mesh but the KX_PolyProxy object refers to
  the original mesh. You should use it only to retrieve the
  material.
- Dynamic derived mesh have very poor performance:
  They use direct openGL calls for rendering (no support
  for display list and vertex array) and they dont't share
  the derived mesh memory. Always apply modifiers on dynamic
  mesh for best performance.
- Time dependent modifiers are not supported.
- Modifiers are not supported for Bullet soft body.
2009-05-14 13:47:08 +00:00
Benoit Bolsee
352eaccd5d BGE: Add soft body welding parameter to the Advanced Settings panel. The values are very small so I chose to use logarithmic scale. Should be fine, it's an advanced setting after all. 2009-04-27 16:44:02 +00:00
Erwin Coumans
06d455f428 Add support to lock individual axis during rigid body simulation, for translation and rotation. This makes it easier to do 1D or 2D physics (tetris, blockout)
todo: create some example/demo.blend.
2009-03-09 07:12:16 +00:00
Campbell Barton
7fffb0b630 Building the game engine with Solid/Sumo is now optional for scons using WITH_BF_SOLID.
Now Sumo is has been deprecated for a while we might want to remove it for 2.5.
2009-02-25 12:07:51 +00:00
Erwin Coumans
f8fb61f9fa enable -noaudio option, so it actually works (and doesn't get overwritten by a game flag). audio initialization delays startup of game engine 2 seconds
add -nojoystick commandline option: it takes 5 seconds everytime to start the game engine, while there IS no joystick.

In other words: blender -noaudio -nojoystick improves workflow turnaround times for P - ESC from 7 seconds to 1 second!

Improved Bullet soft body advanced options, still work-in-progress. Make sure to create game Bullet soft bodies from scratch, it is not compatible with last weeks builds.
2008-09-28 03:07:13 +00:00
Erwin Coumans
718e2bf74f improved game soft bodies, works for objects that are using 'set smooth'
use shape matching by default for game soft bodies
store soft body index for game vertices
2008-09-25 03:02:30 +00:00
Erwin Coumans
1c29d02305 BGE real-time soft bodies, step 2 / 3: create a btSoftBody. Next step is hooking up / deform graphics mesh and choose collision shape.
Note: feature is still disabled.
2008-09-21 15:17:50 +00:00
Benoit Bolsee
41a0b56b70 BGE patch: new Physics button and margin parameter in Logic panel. Change subversion.
The Physics button controls the creation of a physics representation 
of the object when starting the game. If the button is not selected,
the object is a pure graphical object with no physics representation
and all the other physics buttons are hidden.
Selecting this button gives access to the usual physics buttons.
The physics button is enabled by default to match previous Blender
behavior.

The margin parameter allows to control the collision margin from
the UI. Previously, this parameter was only accessible through 
Python. By default, the collision margin is set to 0.0 on static 
objects and 0.06 on dynamic objects. 
To maintain compatibility with older games, the collision margin
is set to 0.06 on all objects when loading older blend file.

Note about the collision algorithms in Bullet 2.71
--------------------------------------------------
Bullet 2.71 handles the collision margin differently than Bullet 2.53
(the previous Bullet version in Blender). The collision margin is 
now kept "inside" the object for box, sphere and cylinder bound 
shapes. This means that two objects bound to any of these shape will
come in close contact when colliding. 
The static mesh, convex hull and cone shapes still have their
collision margin "outside" the object, which leaves a space of 1
or 2 times the collision margin between objects. 

The situation with Bullet 2.53 was more complicated, generally
leading to more space between objects, except for box-box collisions. 

This means that running a old game under Bullet 2.71 may cause
visual problems, especially if the objects are small. You can fix
these problems by changing some visual aspect of the objects: 
center, shape, size, position of children, etc.
2008-09-14 19:34:06 +00:00
Chris Want
5d0a207ecb Patch from GSR that a) fixes a whole bunch of GPL/BL license
blocks that were previously missed; and b) greatly increase my
ohloh stats!
2008-04-16 22:40:48 +00:00
Erwin Coumans
4941107f92 - enabled compound collision objects, requires 'clear parent inverse'
- fixed some issues with kinematic objects, introduced during Bullet 2.x upgrade
2006-12-01 01:04:27 +00:00
Erwin Coumans
c2782ce10e added 'disable sleeping' option for rigidbodies. + bugfix of out of sync wheels for vehicle 2006-02-22 06:58:05 +00:00
Erwin Coumans
745fc2f9d0 updated SConstruct and Makefile so that if you compile the gameengine, is always enables bullet, independent of sumo/ode.
So for the 2.4 release, both bullet AND sumo will be enabled. You can choose in the world buttons which physics engine is active for a scene.

sorry if this breaks your builds!
2005-10-23 17:55:19 +00:00
Erwin Coumans
c99c7fbcb3 some more fixes in the raycast/mouse over 2005-08-17 19:52:56 +00:00
Erwin Coumans
4d7089d19b these files missed the cvs commt yesterday, this should fix compilation problems 2005-08-13 08:05:48 +00:00
Erwin Coumans
b6d9fbf0db fixed the mouse-over sensor,
added raycast support for bullet (no triangle-mesh support, soon)
added python methods for 'getHitObject', getRayDirection, getHitPosition and getHitNormal for mouse over sensor,
which makes it easy for a shootout.blend demo :)
2005-08-05 17:00:32 +00:00
Erwin Coumans
6eeaacde0a enable bullet for vc7 too by default (can be switched off easily) 2005-07-30 18:21:02 +00:00
Erwin Coumans
7432e4485e >humm, .. this seems to define USE_BULLET for 1400 > _MSC_VER
>e.g.  my msvc6 and gcc in linux. right?
>BM

thanks bjornmose, is was a typo
(it only disabled bullet for Visual Studio 2006, which is not even in planning stage :)
Should be fixed now
2005-07-29 06:08:02 +00:00
Erwin Coumans
8f15f9805a got some "_1400 <= _MSC_VER" wrong, should be "_1400 < _MSC_VER"
Lets hope gcc doesn't define this :)
2005-07-27 09:47:08 +00:00
Erwin Coumans
411123b250 - added debug line drawing in gameengine (handy for debugging physics problems)
- added #ifdef for a visual studio 8 crashing problems
- added scaling and tolerances to triangle meshes
2005-07-27 09:30:53 +00:00
Erwin Coumans
2d73b31aff preparation for bullet physics 2005-07-16 21:47:54 +00:00
Kester Maddock
1092b98337 Fix for bug 1600: alpha sort doesn't work on linked (alt-d) objects 2004-11-22 11:49:35 +00:00
Kester Maddock
46fbe6b01e Fix for bugs: 1788 (forces) and 1799 (python delattr on game objects)
Use Polytope collision for faster mesh intersection tests, so SOLID can actually use that qhull lib now.
2004-11-22 10:19:19 +00:00
Kester Maddock
bd50d2f9cd Delete all SOLID shapes at the end of the game engine. They were all being leaked! 2004-05-08 00:25:20 +00:00
Nathan Letwory
00291b5cf4 [GameEngine] Commit all Kester's changes made to the gameengine to restore 2.25 like physics.
[SCons] Build with Solid as default when enabling the gameengine in the build process
[SCons] Build solid and qhull from the extern directory and link statically against them

That was about it.

There are a few things that needs double checking:

* Makefiles
* Projectfiles
* All the other systems than Linux and Windows on which the build (with scons) has been successfully tested.
2004-03-22 22:02:18 +00:00
Kent Mein
f1c4f705a1 Removed the config.h thing from the .h's in the source dir.
So we should be all set now :)

Kent
--
mein@cs.umn.edu
2002-12-27 13:11:01 +00:00
Kent Mein
b9a19f1ea7 Did all of the .h's in source
(adding)
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

also the Makefile.in's were from previous patch adding
the system depend stuff to configure.ac

Kent
--
mein@cs.umn.edu
2002-11-25 11:16:17 +00:00
Kent Mein
01bff70383 fixed spacing in the headers to get rid of some warnings and some other
little minor spacing issues.
2002-10-30 02:07:20 +00:00
Norman Lin
1b15961786 First checkin of core ODE functionality. See OdePhysicsController.cpp for a todo list. 2002-10-18 14:36:34 +00:00
Hans Lambermont
12315f4d0e Initial revision 2002-10-12 11:37:38 +00:00