d4708
/
source-engine
mirror of https://github.com/nillerusr/source-engine.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
551 Commits
25 Branches
6 Tags
221 MiB
 
 
 
 
 
 
Branch: master
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'master'
${ noResults }
source-engine/game/client/physics.cpp

1045 lines
30 KiB
Raw Permalink Blame History

//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================//
#include "cbase.h"
#include "vcollide_parse.h"
#include "filesystem.h"
#include "engine/IStaticPropMgr.h"
#include "solidsetdefaults.h"
#include "engine/IEngineSound.h"
#include "vphysics_sound.h"
#include "movevars_shared.h"
#include "engine/ivmodelinfo.h"
#include "fx.h"
#include "tier0/vprof.h"
#include "c_world.h"
#include "vphysics/object_hash.h"
#include "vphysics/collision_set.h"
#include "soundenvelope.h"
#include "fx_water.h"
#include "positionwatcher.h"
#include "vphysics/constraints.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
// file system interface
extern IFileSystem *filesystem;
ConVar cl_phys_timescale( "cl_phys_timescale", "1.0", FCVAR_CHEAT, "Sets the scale of time for client-side physics (ragdolls)" );
void PrecachePhysicsSounds( void );
//FIXME: Replicated from server end, consolidate?
extern IVEngineClient *engine;
class CCollisionEvent : public IPhysicsCollisionEvent, public IPhysicsCollisionSolver, public IPhysicsObjectEvent
{
public:
CCollisionEvent( void ) = default;
void ObjectSound( int index, vcollisionevent_t *pEvent );
void PreCollision( vcollisionevent_t *pEvent ) {}
void PostCollision( vcollisionevent_t *pEvent );
void Friction( IPhysicsObject *pObject, float energy, int surfaceProps, int surfacePropsHit, IPhysicsCollisionData *pData );
void BufferTouchEvents( bool enable ) { m_bBufferTouchEvents = enable; }
void StartTouch( IPhysicsObject *pObject1, IPhysicsObject *pObject2, IPhysicsCollisionData *pTouchData );
void EndTouch( IPhysicsObject *pObject1, IPhysicsObject *pObject2, IPhysicsCollisionData *pTouchData );
void FluidStartTouch( IPhysicsObject *pObject, IPhysicsFluidController *pFluid );
void FluidEndTouch( IPhysicsObject *pObject, IPhysicsFluidController *pFluid );
void PostSimulationFrame() {}
virtual void ObjectEnterTrigger( IPhysicsObject *pTrigger, IPhysicsObject *pObject ) {}
virtual void ObjectLeaveTrigger( IPhysicsObject *pTrigger, IPhysicsObject *pObject ) {}
float DeltaTimeSinceLastFluid( CBaseEntity *pEntity );
void FrameUpdate( void );
void UpdateFluidEvents( void );
void UpdateTouchEvents( void );
// IPhysicsCollisionSolver
int ShouldCollide( IPhysicsObject *pObj0, IPhysicsObject *pObj1, void *pGameData0, void *pGameData1 );
#if _DEBUG
int ShouldCollide_2( IPhysicsObject *pObj0, IPhysicsObject *pObj1, void *pGameData0, void *pGameData1 );
#endif
// debugging collision problem in TF2
int ShouldSolvePenetration( IPhysicsObject *pObj0, IPhysicsObject *pObj1, void *pGameData0, void *pGameData1, float dt );
bool ShouldFreezeObject( IPhysicsObject *pObject ) { return true; }
int AdditionalCollisionChecksThisTick( int currentChecksDone ) { return 0; }
bool ShouldFreezeContacts( IPhysicsObject **pObjectList, int objectCount ) { return true; }
// IPhysicsObjectEvent
virtual void ObjectWake( IPhysicsObject *pObject )
{
C_BaseEntity *pEntity = static_cast<C_BaseEntity *>(pObject->GetGameData());
if (pEntity && pEntity->HasDataObjectType(VPHYSICSWATCHER))
{
ReportVPhysicsStateChanged( pObject, pEntity, true );
}
}
virtual void ObjectSleep( IPhysicsObject *pObject )
{
C_BaseEntity *pEntity = static_cast<C_BaseEntity *>(pObject->GetGameData());
if ( pEntity && pEntity->HasDataObjectType( VPHYSICSWATCHER ) )
{
ReportVPhysicsStateChanged( pObject, pEntity, false );
}
}
friction_t *FindFriction( CBaseEntity *pObject );
void ShutdownFriction( friction_t &friction );
void UpdateFrictionSounds();
bool IsInCallback() { return m_inCallback > 0 ? true : false; }
private:
class CallbackContext
{
public:
CallbackContext(CCollisionEvent *pOuter)
{
m_pOuter = pOuter;
m_pOuter->m_inCallback++;
}
~CallbackContext()
{
m_pOuter->m_inCallback--;
}
private:
CCollisionEvent *m_pOuter;
};
friend class CallbackContext;
void AddTouchEvent( C_BaseEntity *pEntity0, C_BaseEntity *pEntity1, int touchType, const Vector &point, const Vector &normal );
void DispatchStartTouch( C_BaseEntity *pEntity0, C_BaseEntity *pEntity1, const Vector &point, const Vector &normal );
void DispatchEndTouch( C_BaseEntity *pEntity0, C_BaseEntity *pEntity1 );
friction_t m_current[8];
CUtlVector<fluidevent_t> m_fluidEvents;
CUtlVector<touchevent_t> m_touchEvents;
int m_inCallback;
bool m_bBufferTouchEvents;
};
CCollisionEvent g_Collisions;
bool PhysIsInCallback()
{
if ( (physenv && physenv->IsInSimulation()) || g_Collisions.IsInCallback() )
return true;
return false;
}
bool PhysicsDLLInit( CreateInterfaceFn physicsFactory )
{
if ((physics = (IPhysics *)physicsFactory( VPHYSICS_INTERFACE_VERSION, NULL )) == NULL ||
(physprops = (IPhysicsSurfaceProps *)physicsFactory( VPHYSICS_SURFACEPROPS_INTERFACE_VERSION, NULL )) == NULL ||
(physcollision = (IPhysicsCollision *)physicsFactory( VPHYSICS_COLLISION_INTERFACE_VERSION, NULL )) == NULL )
{
return false;
}
if ( IsX360() )
{
// Reduce timescale to save perf on 360
cl_phys_timescale.SetValue(0.9f);
}
PhysParseSurfaceData( physprops, filesystem );
return true;
}
#define DEFAULT_XBOX_CLIENT_VPHYSICS_TICK 0.025 // 25ms ticks on xbox ragdolls
void PhysicsLevelInit( void )
{
physenv = physics->CreateEnvironment();
assert( physenv );
#ifdef PORTAL
physenv_main = physenv;
#endif
{
MEM_ALLOC_CREDIT();
g_EntityCollisionHash = physics->CreateObjectPairHash();
}
// TODO: need to get the right factory function here
//physenv->SetDebugOverlay( appSystemFactory );
physenv->SetGravity( Vector(0, 0, -GetCurrentGravity() ) );
// 15 ms per tick
// NOTE: Always run client physics at this rate - helps keep ragdolls stable
physenv->SetSimulationTimestep( IsXbox() ? DEFAULT_XBOX_CLIENT_VPHYSICS_TICK : DEFAULT_TICK_INTERVAL );
physenv->SetCollisionEventHandler( &g_Collisions );
physenv->SetCollisionSolver( &g_Collisions );
g_PhysWorldObject = PhysCreateWorld_Shared( GetClientWorldEntity(), modelinfo->GetVCollide(1), g_PhysDefaultObjectParams );
staticpropmgr->CreateVPhysicsRepresentations( physenv, &g_SolidSetup, NULL );
}
void PhysicsReset()
{
if ( !physenv )
return;
physenv->ResetSimulationClock();
}
ConVar cl_ragdoll_collide( "cl_ragdoll_collide", "0" );
int CCollisionEvent::ShouldCollide( IPhysicsObject *pObj0, IPhysicsObject *pObj1, void *pGameData0, void *pGameData1 )
#if _DEBUG
{
int x0 = ShouldCollide_2(pObj0, pObj1, pGameData0, pGameData1);
int x1 = ShouldCollide_2(pObj1, pObj0, pGameData1, pGameData0);
Assert(x0==x1);
return x0;
}
int CCollisionEvent::ShouldCollide_2( IPhysicsObject *pObj0, IPhysicsObject *pObj1, void *pGameData0, void *pGameData1 )
#endif
{
CallbackContext callback(this);
C_BaseEntity *pEntity0 = static_cast<C_BaseEntity *>(pGameData0);
C_BaseEntity *pEntity1 = static_cast<C_BaseEntity *>(pGameData1);
if ( !pEntity0 || !pEntity1 )
return 1;
unsigned short gameFlags0 = pObj0->GetGameFlags();
unsigned short gameFlags1 = pObj1->GetGameFlags();
if ( pEntity0 == pEntity1 )
{
// allow all-or-nothing per-entity disable
if ( (gameFlags0 | gameFlags1) & FVPHYSICS_NO_SELF_COLLISIONS )
return 0;
IPhysicsCollisionSet *pSet = physics->FindCollisionSet( pEntity0->GetModelIndex() );
if ( pSet )
return pSet->ShouldCollide( pObj0->GetGameIndex(), pObj1->GetGameIndex() );
return 1;
}
// Obey collision group rules
Assert(GameRules());
if ( GameRules() )
{
if (!GameRules()->ShouldCollide( pEntity0->GetCollisionGroup(), pEntity1->GetCollisionGroup() ))
return 0;
}
if ( (pObj0->GetGameFlags() & FVPHYSICS_PART_OF_RAGDOLL) && (pObj1->GetGameFlags() & FVPHYSICS_PART_OF_RAGDOLL) )
{
if ( !cl_ragdoll_collide.GetBool() )
return 0;
}
// check contents
if ( !(pObj0->GetContents() & pEntity1->PhysicsSolidMaskForEntity()) || !(pObj1->GetContents() & pEntity0->PhysicsSolidMaskForEntity()) )
return 0;
if ( g_EntityCollisionHash->IsObjectPairInHash( pGameData0, pGameData1 ) )
return 0;
if ( g_EntityCollisionHash->IsObjectPairInHash( pObj0, pObj1 ) )
return 0;
#if 0
int solid0 = pEntity0->GetSolid();
int solid1 = pEntity1->GetSolid();
int nSolidFlags0 = pEntity0->GetSolidFlags();
int nSolidFlags1 = pEntity1->GetSolidFlags();
#endif
int movetype0 = pEntity0->GetMoveType();
int movetype1 = pEntity1->GetMoveType();
// entities with non-physical move parents or entities with MOVETYPE_PUSH
// are considered as "AI movers". They are unchanged by collision; they exert
// physics forces on the rest of the system.
bool aiMove0 = (movetype0==MOVETYPE_PUSH) ? true : false;
bool aiMove1 = (movetype1==MOVETYPE_PUSH) ? true : false;
if ( pEntity0->GetMoveParent() )
{
// if the object & its parent are both MOVETYPE_VPHYSICS, then this must be a special case
// like a prop_ragdoll_attached
if ( !(movetype0 == MOVETYPE_VPHYSICS && pEntity0->GetRootMoveParent()->GetMoveType() == MOVETYPE_VPHYSICS) )
{
aiMove0 = true;
}
}
if ( pEntity1->GetMoveParent() )
{
// if the object & its parent are both MOVETYPE_VPHYSICS, then this must be a special case.
if ( !(movetype1 == MOVETYPE_VPHYSICS && pEntity1->GetRootMoveParent()->GetMoveType() == MOVETYPE_VPHYSICS) )
{
aiMove1 = true;
}
}
// AI movers don't collide with the world/static/pinned objects or other AI movers
if ( (aiMove0 && !pObj1->IsMoveable()) ||
(aiMove1 && !pObj0->IsMoveable()) ||
(aiMove0 && aiMove1) )
return 0;
// two objects under shadow control should not collide. The AI will figure it out
if ( pObj0->GetShadowController() && pObj1->GetShadowController() )
return 0;
return 1;
}
int CCollisionEvent::ShouldSolvePenetration( IPhysicsObject *pObj0, IPhysicsObject *pObj1, void *pGameData0, void *pGameData1, float dt )
{
CallbackContext callback(this);
// solve it yourself here and return 0, or have the default implementation do it
if ( pGameData0 == pGameData1 )
{
if ( pObj0->GetGameFlags() & FVPHYSICS_PART_OF_RAGDOLL )
{
// this is a ragdoll, self penetrating
C_BaseEntity *pEnt = reinterpret_cast<C_BaseEntity *>(pGameData0);
C_BaseAnimating *pAnim = pEnt->GetBaseAnimating();
if ( pAnim && pAnim->m_pRagdoll )
{
IPhysicsConstraintGroup *pGroup = pAnim->m_pRagdoll->GetConstraintGroup();
if ( pGroup )
{
pGroup->SolvePenetration( pObj0, pObj1 );
return false;
}
}
}
}
return true;
}
// A class that implements an IClientSystem for physics
class CPhysicsSystem : public CAutoGameSystemPerFrame
{
public:
CPhysicsSystem( char const *name ) : CAutoGameSystemPerFrame( name )
{
}
// HACKHACK: PhysicsDLLInit() is called explicitly because it requires a parameter
virtual bool Init();
virtual void Shutdown();
// Level init, shutdown
virtual void LevelInitPreEntity();
virtual void LevelInitPostEntity();
// The level is shutdown in two parts
virtual void LevelShutdownPreEntity();
virtual void LevelShutdownPostEntity();
void AddImpactSound( void *pGameData, IPhysicsObject *pObject, int surfaceProps, int surfacePropsHit, float volume, float speed );
virtual void Update( float frametime );
void PhysicsSimulate();
private:
physicssound::soundlist_t m_impactSounds;
};
static CPhysicsSystem g_PhysicsSystem( "CPhysicsSystem" );
// singleton to hook into the client system
IGameSystem *PhysicsGameSystem( void )
{
return &g_PhysicsSystem;
}
// HACKHACK: PhysicsDLLInit() is called explicitly because it requires a parameter
bool CPhysicsSystem::Init()
{
return true;
}
void CPhysicsSystem::Shutdown()
{
}
// Level init, shutdown
void CPhysicsSystem::LevelInitPreEntity( void )
{
m_impactSounds.RemoveAll();
PrecachePhysicsSounds();
}
void CPhysicsSystem::LevelInitPostEntity( void )
{
PhysicsLevelInit();
}
// The level is shutdown in two parts
void CPhysicsSystem::LevelShutdownPreEntity()
{
if ( physenv )
{
// we may have deleted multiple objects including the world by now, so
// don't try to wake them up
physenv->SetQuickDelete( true );
}
}
void CPhysicsSystem::LevelShutdownPostEntity()
{
if ( physenv )
{
// environment destroys all objects
// entities are gone, so this is safe now
physics->DestroyEnvironment( physenv );
}
physics->DestroyObjectPairHash( g_EntityCollisionHash );
g_EntityCollisionHash = NULL;
physics->DestroyAllCollisionSets();
physenv = NULL;
g_PhysWorldObject = NULL;
}
void CPhysicsSystem::AddImpactSound( void *pGameData, IPhysicsObject *pObject, int surfaceProps, int surfacePropsHit, float volume, float speed )
{
physicssound::AddImpactSound( m_impactSounds, pGameData, SOUND_FROM_WORLD, CHAN_STATIC, pObject, surfaceProps, surfacePropsHit, volume, speed );
}
void CPhysicsSystem::Update( float frametime )
{
// THIS WAS MOVED TO POST-ENTITY SIM
//PhysicsSimulate();
}
void CPhysicsSystem::PhysicsSimulate()
{
VPROF_BUDGET( "CPhysicsSystem::PhysicsSimulate", VPROF_BUDGETGROUP_PHYSICS );
float frametime = gpGlobals->frametime;
if ( physenv )
{
tmZone( TELEMETRY_LEVEL0, TMZF_NONE, "%s %d", __FUNCTION__, physenv->GetActiveObjectCount() );
g_Collisions.BufferTouchEvents( true );
#ifdef _DEBUG
physenv->DebugCheckContacts();
#endif
physenv->Simulate( frametime * cl_phys_timescale.GetFloat() );
int activeCount = physenv->GetActiveObjectCount();
IPhysicsObject **pActiveList = NULL;
if ( activeCount )
{
pActiveList = (IPhysicsObject **)stackalloc( sizeof(IPhysicsObject *)*activeCount );
physenv->GetActiveObjects( pActiveList );
for ( int i = 0; i < activeCount; i++ )
{
C_BaseEntity *pEntity = reinterpret_cast<C_BaseEntity *>(pActiveList[i]->GetGameData());
if ( pEntity )
{
if ( pEntity->CollisionProp()->DoesVPhysicsInvalidateSurroundingBox() )
{
pEntity->CollisionProp()->MarkSurroundingBoundsDirty();
}
pEntity->VPhysicsUpdate( pActiveList[i] );
}
}
}
g_Collisions.BufferTouchEvents( false );
g_Collisions.FrameUpdate();
}
physicssound::PlayImpactSounds( m_impactSounds );
}
void PhysicsSimulate()
{
g_PhysicsSystem.PhysicsSimulate();
}
void CCollisionEvent::ObjectSound( int index, vcollisionevent_t *pEvent )
{
IPhysicsObject *pObject = pEvent->pObjects[index];
if ( !pObject || pObject->IsStatic() )
return;
float speed = pEvent->collisionSpeed * pEvent->collisionSpeed;
int surfaceProps = pEvent->surfaceProps[index];
void *pGameData = pObject->GetGameData();
if ( pGameData )
{
float volume = speed * (1.0f/(320.0f*320.0f)); // max volume at 320 in/s
if ( volume > 1.0f )
volume = 1.0f;
if ( surfaceProps >= 0 )
{
g_PhysicsSystem.AddImpactSound( pGameData, pObject, surfaceProps, pEvent->surfaceProps[!index], volume, speed );
}
}
}
void CCollisionEvent::PostCollision( vcollisionevent_t *pEvent )
{
CallbackContext callback(this);
if ( pEvent->deltaCollisionTime > 0.1f && pEvent->collisionSpeed > 70 )
{
ObjectSound( 0, pEvent );
ObjectSound( 1, pEvent );
}
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CCollisionEvent::FrameUpdate( void )
{
UpdateFrictionSounds();
UpdateTouchEvents();
UpdateFluidEvents();
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CCollisionEvent::UpdateTouchEvents( void )
{
// Turn on buffering in case new touch events occur during processing
bool bOldTouchEvents = m_bBufferTouchEvents;
m_bBufferTouchEvents = true;
for ( int i = 0; i < m_touchEvents.Count(); i++ )
{
const touchevent_t &event = m_touchEvents[i];
if ( event.touchType == TOUCH_START )
{
DispatchStartTouch( event.pEntity0, event.pEntity1, event.endPoint, event.normal );
}
else
{
// TOUCH_END
DispatchEndTouch( event.pEntity0, event.pEntity1 );
}
}
m_touchEvents.RemoveAll();
m_bBufferTouchEvents = bOldTouchEvents;
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pEntity0 -
// *pEntity1 -
// touchType -
//-----------------------------------------------------------------------------
void CCollisionEvent::AddTouchEvent( C_BaseEntity *pEntity0, C_BaseEntity *pEntity1, int touchType, const Vector &point, const Vector &normal )
{
if ( !pEntity0 || !pEntity1 )
return;
int index = m_touchEvents.AddToTail();
touchevent_t &event = m_touchEvents[index];
event.pEntity0 = pEntity0;
event.pEntity1 = pEntity1;
event.touchType = touchType;
event.endPoint = point;
event.normal = normal;
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pObject1 -
// *pObject2 -
// *pTouchData -
//-----------------------------------------------------------------------------
void CCollisionEvent::StartTouch( IPhysicsObject *pObject1, IPhysicsObject *pObject2, IPhysicsCollisionData *pTouchData )
{
CallbackContext callback(this);
C_BaseEntity *pEntity1 = static_cast<C_BaseEntity *>(pObject1->GetGameData());
C_BaseEntity *pEntity2 = static_cast<C_BaseEntity *>(pObject2->GetGameData());
if ( !pEntity1 || !pEntity2 )
return;
Vector endPoint, normal;
pTouchData->GetContactPoint( endPoint );
pTouchData->GetSurfaceNormal( normal );
if ( !m_bBufferTouchEvents )
{
DispatchStartTouch( pEntity1, pEntity2, endPoint, normal );
}
else
{
AddTouchEvent( pEntity1, pEntity2, TOUCH_START, endPoint, normal );
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pEntity0 -
// *pEntity1 -
//-----------------------------------------------------------------------------
void CCollisionEvent::DispatchStartTouch( C_BaseEntity *pEntity0, C_BaseEntity *pEntity1, const Vector &point, const Vector &normal )
{
trace_t trace;
memset( &trace, 0, sizeof(trace) );
trace.endpos = point;
trace.plane.dist = DotProduct( point, normal );
trace.plane.normal = normal;
// NOTE: This sets up the touch list for both entities, no call to pEntity1 is needed
pEntity0->PhysicsMarkEntitiesAsTouchingEventDriven( pEntity1, trace );
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pObject1 -
// *pObject2 -
// *pTouchData -
//-----------------------------------------------------------------------------
void CCollisionEvent::EndTouch( IPhysicsObject *pObject1, IPhysicsObject *pObject2, IPhysicsCollisionData *pTouchData )
{
CallbackContext callback(this);
C_BaseEntity *pEntity1 = static_cast<C_BaseEntity *>(pObject1->GetGameData());
C_BaseEntity *pEntity2 = static_cast<C_BaseEntity *>(pObject2->GetGameData());
if ( !pEntity1 || !pEntity2 )
return;
if ( !m_bBufferTouchEvents )
{
DispatchEndTouch( pEntity1, pEntity2 );
}
else
{
AddTouchEvent( pEntity1, pEntity2, TOUCH_END, vec3_origin, vec3_origin );
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pEntity0 -
// *pEntity1 -
//-----------------------------------------------------------------------------
void CCollisionEvent::DispatchEndTouch( C_BaseEntity *pEntity0, C_BaseEntity *pEntity1 )
{
// frees the event-driven touchlinks
pEntity0->PhysicsNotifyOtherOfUntouch( pEntity0, pEntity1 );
pEntity1->PhysicsNotifyOtherOfUntouch( pEntity1, pEntity0 );
}
void CCollisionEvent::Friction( IPhysicsObject *pObject, float energy, int surfaceProps, int surfacePropsHit, IPhysicsCollisionData *pData )
{
CallbackContext callback(this);
if ( energy < 0.05f || surfaceProps < 0 )
return;
//Get our friction information
Vector vecPos, vecVel;
pData->GetContactPoint( vecPos );
pObject->GetVelocityAtPoint( vecPos, &vecVel );
CBaseEntity *pEntity = reinterpret_cast<CBaseEntity *>(pObject->GetGameData());
if ( pEntity )
{
friction_t *pFriction = g_Collisions.FindFriction( pEntity );
if ( (gpGlobals->maxClients > 1) && pFriction && pFriction->pObject)
{
// in MP mode play sound and effects once every 500 msecs,
// no ongoing updates, takes too much bandwidth
if ( (pFriction->flLastEffectTime + 0.5f) > gpGlobals->curtime)
{
pFriction->flLastUpdateTime = gpGlobals->curtime;
return;
}
}
PhysFrictionSound( pEntity, pObject, energy, surfaceProps, surfacePropsHit );
}
PhysFrictionEffect( vecPos, vecVel, energy, surfaceProps, surfacePropsHit );
}
friction_t *CCollisionEvent::FindFriction( CBaseEntity *pObject )
{
friction_t *pFree = NULL;
for ( int i = 0; i < ARRAYSIZE(m_current); i++ )
{
if ( !m_current[i].pObject && !pFree )
pFree = &m_current[i];
if ( m_current[i].pObject == pObject )
return &m_current[i];
}
return pFree;
}
void CCollisionEvent::ShutdownFriction( friction_t &friction )
{
// Msg( "Scrape Stop %s \n", STRING(friction.pObject->m_iClassname) );
CSoundEnvelopeController::GetController().SoundDestroy( friction.patch );
friction.patch = NULL;
friction.pObject = NULL;
}
void CCollisionEvent::UpdateFrictionSounds( void )
{
for ( int i = 0; i < ARRAYSIZE(m_current); i++ )
{
if ( m_current[i].patch )
{
if ( m_current[i].flLastUpdateTime < (gpGlobals->curtime-0.1f) )
{
// friction wasn't updated the last 100msec, assume fiction finished
ShutdownFriction( m_current[i] );
}
}
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : &matrix -
// &normal -
// Output : static int
//-----------------------------------------------------------------------------
static int BestAxisMatchingNormal( matrix3x4_t &matrix, const Vector &normal )
{
float bestDot = -1;
int best = 0;
for ( int i = 0; i < 3; i++ )
{
Vector tmp;
MatrixGetColumn( matrix, i, tmp );
float dot = fabs(DotProduct( tmp, normal ));
if ( dot > bestDot )
{
bestDot = dot;
best = i;
}
}
return best;
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pFluid -
// *pObject -
// *pEntity -
//-----------------------------------------------------------------------------
void PhysicsSplash( IPhysicsFluidController *pFluid, IPhysicsObject *pObject, CBaseEntity *pEntity )
{
//FIXME: For now just allow ragdolls for E3 - jdw
if ( ( pObject->GetGameFlags() & FVPHYSICS_PART_OF_RAGDOLL ) == false )
return;
Vector velocity;
pObject->GetVelocity( &velocity, NULL );
float impactSpeed = velocity.Length();
if ( impactSpeed < 25.0f )
return;
Vector normal;
float dist;
pFluid->GetSurfacePlane( &normal, &dist );
matrix3x4_t &matrix = pEntity->EntityToWorldTransform();
// Find the local axis that best matches the water surface normal
int bestAxis = BestAxisMatchingNormal( matrix, normal );
Vector tangent, binormal;
MatrixGetColumn( matrix, (bestAxis+1)%3, tangent );
binormal = CrossProduct( normal, tangent );
VectorNormalize( binormal );
tangent = CrossProduct( binormal, normal );
VectorNormalize( tangent );
// Now we have a basis tangent to the surface that matches the object's local orientation as well as possible
// compute an OBB using this basis
// Get object extents in basis
Vector tanPts[2], binPts[2];
tanPts[0] = physcollision->CollideGetExtent( pObject->GetCollide(), pEntity->GetAbsOrigin(), pEntity->GetAbsAngles(), -tangent );
tanPts[1] = physcollision->CollideGetExtent( pObject->GetCollide(), pEntity->GetAbsOrigin(), pEntity->GetAbsAngles(), tangent );
binPts[0] = physcollision->CollideGetExtent( pObject->GetCollide(), pEntity->GetAbsOrigin(), pEntity->GetAbsAngles(), -binormal );
binPts[1] = physcollision->CollideGetExtent( pObject->GetCollide(), pEntity->GetAbsOrigin(), pEntity->GetAbsAngles(), binormal );
// now compute the centered bbox
float mins[2], maxs[2], center[2], extents[2];
mins[0] = DotProduct( tanPts[0], tangent );
maxs[0] = DotProduct( tanPts[1], tangent );
mins[1] = DotProduct( binPts[0], binormal );
maxs[1] = DotProduct( binPts[1], binormal );
center[0] = 0.5 * (mins[0] + maxs[0]);
center[1] = 0.5 * (mins[1] + maxs[1]);
extents[0] = maxs[0] - center[0];
extents[1] = maxs[1] - center[1];
Vector centerPoint = center[0] * tangent + center[1] * binormal + dist * normal;
Vector axes[2];
axes[0] = (maxs[0] - center[0]) * tangent;
axes[1] = (maxs[1] - center[1]) * binormal;
// visualize OBB hit
/*
Vector corner1 = centerPoint - axes[0] - axes[1];
Vector corner2 = centerPoint + axes[0] - axes[1];
Vector corner3 = centerPoint + axes[0] + axes[1];
Vector corner4 = centerPoint - axes[0] + axes[1];
NDebugOverlay::Line( corner1, corner2, 0, 0, 255, false, 10 );
NDebugOverlay::Line( corner2, corner3, 0, 0, 255, false, 10 );
NDebugOverlay::Line( corner3, corner4, 0, 0, 255, false, 10 );
NDebugOverlay::Line( corner4, corner1, 0, 0, 255, false, 10 );
*/
Vector corner[4];
corner[0] = centerPoint - axes[0] - axes[1];
corner[1] = centerPoint + axes[0] - axes[1];
corner[2] = centerPoint + axes[0] + axes[1];
corner[3] = centerPoint - axes[0] + axes[1];
int contents = enginetrace->GetPointContents( centerPoint-Vector(0,0,2) );
bool bInSlime = ( contents & CONTENTS_SLIME ) ? true : false;
Vector color = vec3_origin;
float luminosity = 1.0f;
if ( !bInSlime )
{
// Get our lighting information
FX_GetSplashLighting( centerPoint + ( normal * 8.0f ), &color, &luminosity );
}
if ( impactSpeed > 150 )
{
if ( bInSlime )
{
FX_GunshotSlimeSplash( centerPoint, normal, random->RandomFloat( 8, 10 ) );
}
else
{
FX_GunshotSplash( centerPoint, normal, random->RandomFloat( 8, 10 ) );
}
}
else if ( !bInSlime )
{
FX_WaterRipple( centerPoint, 1.5f, &color, 1.5f, luminosity );
}
int splashes = 4;
Vector point;
for ( int i = 0; i < splashes; i++ )
{
point = RandomVector( -32.0f, 32.0f );
point[2] = 0.0f;
point += corner[i];
if ( impactSpeed > 150 )
{
if ( bInSlime )
{
FX_GunshotSlimeSplash( centerPoint, normal, random->RandomFloat( 4, 6 ) );
}
else
{
FX_GunshotSplash( centerPoint, normal, random->RandomFloat( 4, 6 ) );
}
}
else if ( !bInSlime )
{
FX_WaterRipple( point, random->RandomFloat( 0.25f, 0.5f ), &color, luminosity, random->RandomFloat( 0.5f, 1.0f ) );
}
}
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CCollisionEvent::UpdateFluidEvents( void )
{
for ( int i = m_fluidEvents.Count()-1; i >= 0; --i )
{
if ( (gpGlobals->curtime - m_fluidEvents[i].impactTime) > FLUID_TIME_MAX )
{
m_fluidEvents.FastRemove(i);
}
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pEntity -
// Output : float
//-----------------------------------------------------------------------------
float CCollisionEvent::DeltaTimeSinceLastFluid( CBaseEntity *pEntity )
{
for ( int i = m_fluidEvents.Count()-1; i >= 0; --i )
{
if ( m_fluidEvents[i].hEntity.Get() == pEntity )
{
return gpGlobals->curtime - m_fluidEvents[i].impactTime;
}
}
int index = m_fluidEvents.AddToTail();
m_fluidEvents[index].hEntity = pEntity;
m_fluidEvents[index].impactTime = gpGlobals->curtime;
return FLUID_TIME_MAX;
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pObject -
// *pFluid -
//-----------------------------------------------------------------------------
void CCollisionEvent::FluidStartTouch( IPhysicsObject *pObject, IPhysicsFluidController *pFluid )
{
CallbackContext callback(this);
if ( ( pObject == NULL ) || ( pFluid == NULL ) )
return;
CBaseEntity *pEntity = static_cast<CBaseEntity *>(pObject->GetGameData());
if ( pEntity )
{
float timeSinceLastCollision = DeltaTimeSinceLastFluid( pEntity );
if ( timeSinceLastCollision < 0.5f )
return;
PhysicsSplash( pFluid, pObject, pEntity );
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pObject -
// *pFluid -
//-----------------------------------------------------------------------------
void CCollisionEvent::FluidEndTouch( IPhysicsObject *pObject, IPhysicsFluidController *pFluid )
{
CallbackContext callback(this);
//FIXME: Do nothing for now
}
IPhysicsObject *GetWorldPhysObject ( void )
{
return g_PhysWorldObject;
}
void PhysFrictionSound( CBaseEntity *pEntity, IPhysicsObject *pObject, const char *pSoundName, HSOUNDSCRIPTHANDLE& handle, float flVolume )
{
if ( !pEntity )
return;
// cut out the quiet sounds
// UNDONE: Separate threshold for starting a sound vs. continuing?
flVolume = clamp( flVolume, 0.0f, 1.0f );
if ( flVolume > (1.0f/128.0f) )
{
friction_t *pFriction = g_Collisions.FindFriction( pEntity );
if ( !pFriction )
return;
CSoundParameters params;
if ( !CBaseEntity::GetParametersForSound( pSoundName, handle, params, NULL ) )
return;
if ( !pFriction->pObject )
{
// don't create really quiet scrapes
if ( params.volume * flVolume <= 0.1f )
return;
pFriction->pObject = pEntity;
CPASAttenuationFilter filter( pEntity, params.soundlevel );
int entindex = pEntity->entindex();
// clientside created entites doesn't have a valid entindex, let 'world' play the sound for them
if ( entindex < 0 )
entindex = 0;
pFriction->patch = CSoundEnvelopeController::GetController().SoundCreate(
filter, entindex, CHAN_BODY, pSoundName, params.soundlevel );
CSoundEnvelopeController::GetController().Play( pFriction->patch, params.volume * flVolume, params.pitch );
}
else
{
float pitch = (flVolume * (params.pitchhigh - params.pitchlow)) + params.pitchlow;
CSoundEnvelopeController::GetController().SoundChangeVolume( pFriction->patch, params.volume * flVolume, 0.1f );
CSoundEnvelopeController::GetController().SoundChangePitch( pFriction->patch, pitch, 0.1f );
}
pFriction->flLastUpdateTime = gpGlobals->curtime;
pFriction->flLastEffectTime = gpGlobals->curtime;
}
}
void PhysCleanupFrictionSounds( CBaseEntity *pEntity )
{
friction_t *pFriction = g_Collisions.FindFriction( pEntity );
if ( pFriction && pFriction->patch )
{
g_Collisions.ShutdownFriction( *pFriction );
}
}
float PhysGetNextSimTime()
{
return physenv->GetSimulationTime() + gpGlobals->frametime * cl_phys_timescale.GetFloat();
}
float PhysGetSyncCreateTime()
{
float nextTime = physenv->GetNextFrameTime();
float simTime = PhysGetNextSimTime();
if ( nextTime < simTime )
{
// The next simulation frame begins before the end of this frame
// so create physics objects at that time so that they will reach the current
// position at curtime. Otherwise the physics object will simulate forward from curtime
// and pop into the future a bit at this point of transition
return gpGlobals->curtime + nextTime - simTime;
}
return gpGlobals->curtime;
}