Engine directory for ticket #1

2026-04-19 19:35:26 +00:00 · 2012-09-19 11:15:01 -04:00 · 2012-09-19 11:15:01 -04:00 · 7dbfe6994d
commit 7dbfe6994d
parent 352279af7a
3795 changed files with 1363358 additions and 0 deletions
--- a/Engine/source/T3D/physics/physx/pxMaterial.cpp
+++ b/Engine/source/T3D/physics/physx/pxMaterial.cpp
@ -0,0 +1,150 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#include "platform/platform.h"
+#include "T3D/physics/physX/px.h"
+
+#include "T3D/physics/physX/pxMaterial.h"
+
+#include "T3D/physics/physX/pxWorld.h"
+#include "T3D/physics/physicsPlugin.h"
+#include "console/consoleTypes.h"
+#include "core/stream/bitStream.h"
+
+
+IMPLEMENT_CO_DATABLOCK_V1( PxMaterial );
+
+ConsoleDocClass( PxMaterial,
+   
+   "@brief Defines a PhysX material assignable to a PxMaterial.\n\n"
+
+   "When two actors collide, the collision behavior that results depends on the material properties "
+   "of the actors' surfaces. For example, the surface properties determine if the actors will or will "
+   "not bounce, or if they will slide or stick. Currently, the only special feature supported by materials "
+   "is anisotropic friction, but according to Nvidia, other effects such as moving surfaces and more types "
+   "of friction are slotted for future release.\n\n"
+
+   "For more information, refer to Nvidia's PhysX docs.\n\n"
+
+   "@ingroup Physics"
+);
+
+PxMaterial::PxMaterial()
+: mNxMat( NULL ),
+  mNxMatId( -1 ),
+  restitution( 0.0f ),
+  staticFriction( 0.1f ),
+  dynamicFriction( 0.95f ),
+  mServer( false )
+{
+}
+
+PxMaterial::~PxMaterial()
+{
+}
+
+void PxMaterial::consoleInit()
+{
+   Parent::consoleInit();
+}
+
+void PxMaterial::initPersistFields()
+{
+   Parent::initPersistFields();
+
+   addGroup("PxMaterial");		
+
+      addField( "restitution", TypeF32, Offset( restitution, PxMaterial ),
+         "@brief Coeffecient of a bounce applied to the shape in response to a collision.\n\n"
+         "A value of 0 makes the object bounce as little as possible, while higher values up to 1.0 result in more bounce.\n\n"
+         "@note Values close to or above 1.0 may cause stability problems and/or increasing energy.");
+      addField( "staticFriction", TypeF32, Offset( staticFriction, PxMaterial ),
+         "@brief Coefficient of static %friction to be applied.\n\n" 
+         "Static %friction determines the force needed to start moving an at-rest object in contact with a surface. "
+         "If the force applied onto shape cannot overcome the force of static %friction, the shape will remain at rest. "
+         "A higher coefficient will require a larger force to start motion. "
+         "@note This value should be larger than 0.\n\n");
+      addField( "dynamicFriction", TypeF32,	Offset( dynamicFriction, PxMaterial ),
+         "@brief Coefficient of dynamic %friction to be applied.\n\n" 
+         "Dynamic %friction reduces the velocity of a moving object while it is in contact with a surface. "
+         "A higher coefficient will result in a larger reduction in velocity. "
+         "A shape's dynamicFriction should be equal to or larger than 0.\n\n");
+
+   endGroup("PxMaterial");		
+}
+
+void PxMaterial::onStaticModified( const char *slotName, const char *newValue )
+{
+   if ( isProperlyAdded() && mNxMat != NULL )
+   {      
+      mNxMat->setRestitution( restitution );
+      mNxMat->setStaticFriction( staticFriction );
+      mNxMat->setDynamicFriction( dynamicFriction );
+   }
+}
+
+bool PxMaterial::preload( bool server, String &errorBuffer )
+{
+   mServer = server;
+
+   PxWorld *world = dynamic_cast<PxWorld*>( PHYSICSMGR->getWorld( server ? "server" : "client" ) );   
+
+   if ( !world )
+   {
+      // TODO: Error... in error buffer?
+      return false;
+   }   
+
+   NxMaterialDesc	material;
+   material.restitution = restitution;
+   material.staticFriction	= staticFriction;
+   material.dynamicFriction	= dynamicFriction;
+
+   mNxMat = world->createMaterial( material );
+   mNxMatId = mNxMat->getMaterialIndex();
+
+   if ( mNxMatId == -1 )
+   {
+      errorBuffer = "PxMaterial::preload() - unable to create material!";
+      return false;
+   }
+
+   return Parent::preload( server, errorBuffer );
+}
+
+void PxMaterial::packData( BitStream* stream )
+{
+   Parent::packData( stream );
+   
+   stream->write( restitution );
+   stream->write( staticFriction );
+   stream->write( dynamicFriction );
+}
+
+void PxMaterial::unpackData( BitStream* stream )
+{
+   Parent::unpackData( stream );
+
+   stream->read( &restitution );
+   stream->read( &staticFriction );
+   stream->read( &dynamicFriction );
+}