static CBaseEntity *FindPhysicsBlocker( IPhysicsObject *pPhysics )
{
IPhysicsFrictionSnapshot *pSnapshot = pPhysics->CreateFrictionSnapshot();
CBaseEntity *pBlocker = NULL;
float maxVel = 10.0f;
while ( pSnapshot->IsValid() )
{
IPhysicsObject *pOther = pSnapshot->GetObject(1);
if ( pOther->IsMoveable() )
{
CBaseEntity *pOtherEntity = static_cast<CBaseEntity *>(pOther->GetGameData());
// dot with this if you have a direction
//Vector normal;
//pSnapshot->GetSurfaceNormal(normal);
float force = pSnapshot->GetNormalForce();
float vel = force * pOther->GetInvMass();
if ( vel > maxVel )
{
pBlocker = pOtherEntity;
maxVel = vel;
}
}
pSnapshot->NextFrictionData();
}
pPhysics->DestroyFrictionSnapshot( pSnapshot );
return pBlocker;
}
void CStatueProp::Event_Killed( const CTakeDamageInfo &info )
{
IPhysicsObject *pPhysics = VPhysicsGetObject();
if ( pPhysics && !pPhysics->IsMoveable() )
{
pPhysics->EnableMotion( true );
VPhysicsTakeDamage( info );
}
m_nShatterFlags = 0; // If you have some flags to network for the shatter effect, put them here!
m_vShatterPosition = info.GetDamagePosition();
m_vShatterForce = info.GetDamageForce();
m_bShatter = true;
// Skip over breaking code!
//Break( info.GetInflictor(), info );
//BaseClass::Event_Killed( info );
// FIXME: Short delay before we actually remove so that the client statue gets a network update before we need it
// This isn't a reliable way to do this and needs to be rethought.
AddSolidFlags( FSOLID_NOT_SOLID );
SetNextThink( gpGlobals->curtime + 0.2f );
SetThink( &CBaseEntity::SUB_Remove );
}
void CPlayerPickupController::Use( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE useType, float value )
{
if ( ToBasePlayer(pActivator) == m_pPlayer )
{
CBaseEntity *pAttached = m_grabController.GetAttached();
// UNDONE: Use vphysics stress to decide to drop objects
// UNDONE: Must fix case of forcing objects into the ground you're standing on (causes stress) before that will work
if ( !pAttached || useType == USE_OFF || (m_pPlayer->m_nButtons & IN_ATTACK2) || m_grabController.ComputeError() > 12 )
{
Shutdown();
return;
}
//Adrian: Oops, our object became motion disabled, let go!
IPhysicsObject *pPhys = pAttached->VPhysicsGetObject();
if ( pPhys && pPhys->IsMoveable() == false )
{
Shutdown();
return;
}
#if STRESS_TEST
vphysics_objectstress_t stress;
CalculateObjectStress( pPhys, pAttached, &stress );
if ( stress.exertedStress > 250 )
{
Shutdown();
return;
}
#endif
#ifndef PLAYER_DISABLE_THROWING
// +ATTACK will throw phys objects
if ( m_pPlayer->m_nButtons & IN_ATTACK )
{
Shutdown( true );
Vector vecLaunch;
m_pPlayer->EyeVectors( &vecLaunch );
// JAY: Scale this with mass because some small objects really go flying
float massFactor = clamp( pPhys->GetMass(), 0.5, 15 );
massFactor = RemapVal( massFactor, 0.5, 15, 0.5, 4 );
vecLaunch *= player_throwforce.GetFloat() * massFactor;
pPhys->ApplyForceCenter( vecLaunch );
AngularImpulse aVel = RandomAngularImpulse( -10, 10 ) * massFactor;
pPhys->ApplyTorqueCenter( aVel );
return;
}
#endif
if ( useType == USE_SET )
{
// update position
m_grabController.UpdateObject( m_pPlayer, 12 );
}
}
}
void CASW_Barrel_Explosive::Event_Killed( const CTakeDamageInfo &info )
{
IPhysicsObject *pPhysics = VPhysicsGetObject();
if ( pPhysics && !pPhysics->IsMoveable() )
{
pPhysics->EnableMotion( true );
VPhysicsTakeDamage( info );
}
QueueForExplode( info );
// Break( info.GetInflictor(), info );
// DoExplosion();
}
void CHL1_Player::Touch( CBaseEntity *pOther )
{
if ( pOther == GetGroundEntity() )
return;
if ( pOther->GetMoveType() != MOVETYPE_VPHYSICS || pOther->GetSolid() != SOLID_VPHYSICS )
return;
IPhysicsObject *pPhys = pOther->VPhysicsGetObject();
if ( !pPhys || !pPhys->IsMoveable() )
return;
SetTouchedPhysics( true );
}
static bool InContactWithHeavyObject( IPhysicsObject *pObject, float heavyMass )
{
bool contact = false;
IPhysicsFrictionSnapshot *pSnapshot = pObject->CreateFrictionSnapshot();
while ( pSnapshot->IsValid() )
{
IPhysicsObject *pOther = pSnapshot->GetObject( 1 );
if ( !pOther->IsMoveable() || pOther->GetMass() > heavyMass )
{
contact = true;
break;
}
pSnapshot->NextFrictionData();
}
pObject->DestroyFrictionSnapshot( pSnapshot );
return contact;
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// adnan
// want to add an angles modifier key
bool CGravControllerPoint::UpdateObject( CBasePlayer *pPlayer, CBaseEntity *pEntity )
{
if ( !pEntity || pPlayer->GetGroundEntity() == pEntity || !pEntity->VPhysicsGetObject() )
{
return false;
}
//Adrian: Oops, our object became motion disabled, let go!
IPhysicsObject *pPhys = pEntity->VPhysicsGetObject();
if ( pPhys && pPhys->IsMoveable() == false )
{
return false;
}
SetTargetPosition( m_targetPosition, m_targetRotation );
return true;
}
void CGEPropDynamic::Event_Killed(const CTakeDamageInfo &info)
{
// More or less just the kill event copied straight from prop_physics_respawnable, though it does not teleport as it cannot move on its own.
IPhysicsObject *pPhysics = VPhysicsGetObject();
if (pPhysics && !pPhysics->IsMoveable())
{
pPhysics->EnableMotion(true);
VPhysicsTakeDamage(info);
}
Break(info.GetInflictor(), info);
PhysCleanupFrictionSounds(this);
VPhysicsDestroyObject();
CBaseEntity::PhysicsRemoveTouchedList(this);
CBaseEntity::PhysicsRemoveGroundList(this);
DestroyAllDataObjects();
AddEffects(EF_NODRAW);
if (IsOnFire() || IsDissolving())
{
UTIL_Remove(GetEffectEntity());
}
SetContextThink(NULL, 0, "PROP_CLEARFLAGS");
if (m_flRespawnTime > 0)
{
SetThink(&CGEPropDynamic::Materialize);
SetNextThink(gpGlobals->curtime + m_flRespawnTime);
}
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
bool CGrabController::UpdateObject( CBasePlayer *pPlayer, float flError )
{
CBaseEntity *pEntity = GetAttached();
if ( !pEntity || ComputeError() > flError || pPlayer->GetGroundEntity() == pEntity || !pEntity->VPhysicsGetObject() )
{
return false;
}
//Adrian: Oops, our object became motion disabled, let go!
IPhysicsObject *pPhys = pEntity->VPhysicsGetObject();
if ( pPhys && pPhys->IsMoveable() == false )
{
return false;
}
Vector forward, right, up;
QAngle playerAngles = pPlayer->EyeAngles();
AngleVectors( playerAngles, &forward, &right, &up );
float pitch = AngleDistance(playerAngles.x,0);
if( !m_bAllowObjectOverhead )
{
playerAngles.x = clamp( pitch, -75, 75 );
}
else
{
playerAngles.x = clamp( pitch, -90, 75 );
}
// Now clamp a sphere of object radius at end to the player's bbox
Vector radial = physcollision->CollideGetExtent( pPhys->GetCollide(), vec3_origin, pEntity->GetAbsAngles(), -forward );
Vector player2d = pPlayer->CollisionProp()->OBBMaxs();
float playerRadius = player2d.Length2D();
float radius = playerRadius + fabs(DotProduct( forward, radial ));
float distance = 24 + ( radius * 2.0f );
// Add the prop's distance offset
distance += m_flDistanceOffset;
Vector start = pPlayer->Weapon_ShootPosition();
Vector end = start + ( forward * distance );
trace_t tr;
CTraceFilterSkipTwoEntities traceFilter( pPlayer, pEntity, COLLISION_GROUP_NONE );
Ray_t ray;
ray.Init( start, end );
enginetrace->TraceRay( ray, MASK_SOLID_BRUSHONLY, &traceFilter, &tr );
if ( tr.fraction < 0.5 )
{
end = start + forward * (radius*0.5f);
}
else if ( tr.fraction <= 1.0f )
{
end = start + forward * ( distance - radius );
}
Vector playerMins, playerMaxs, nearest;
pPlayer->CollisionProp()->WorldSpaceAABB( &playerMins, &playerMaxs );
Vector playerLine = pPlayer->CollisionProp()->WorldSpaceCenter();
CalcClosestPointOnLine( end, playerLine+Vector(0,0,playerMins.z), playerLine+Vector(0,0,playerMaxs.z), nearest, NULL );
if( !m_bAllowObjectOverhead )
{
Vector delta = end - nearest;
float len = VectorNormalize(delta);
if ( len < radius )
{
end = nearest + radius * delta;
}
}
//Show overlays of radius
if ( g_debug_physcannon.GetBool() )
{
NDebugOverlay::Box( end, -Vector( 2,2,2 ), Vector(2,2,2), 0, 255, 0, true, 0 );
NDebugOverlay::Box( GetAttached()->WorldSpaceCenter(),
-Vector( radius, radius, radius),
Vector( radius, radius, radius ),
255, 0, 0,
true,
0.0f );
}
QAngle angles = TransformAnglesFromPlayerSpace( m_attachedAnglesPlayerSpace, pPlayer );
// If it has a preferred orientation, update to ensure we're still oriented correctly.
Pickup_GetPreferredCarryAngles( pEntity, pPlayer, pPlayer->EntityToWorldTransform(), angles );
// We may be holding a prop that has preferred carry angles
if ( m_bHasPreferredCarryAngles )
{
matrix3x4_t tmp;
ComputePlayerMatrix( pPlayer, tmp );
angles = TransformAnglesToWorldSpace( m_vecPreferredCarryAngles, tmp );
}
matrix3x4_t attachedToWorld;
Vector offset;
AngleMatrix( angles, attachedToWorld );
VectorRotate( m_attachedPositionObjectSpace, attachedToWorld, offset );
SetTargetPosition( end - offset, angles );
return true;
}
float CalculateObjectStress( IPhysicsObject *pObject, CBaseEntity *pInputOwnerEntity, vphysics_objectstress_t *pOutput )
{
CUtlVector< CBaseEntity * > pObjectList;
CUtlVector< Vector > objectForce;
bool hasLargeObject = false;
// add a slot for static objects
pObjectList.AddToTail( NULL );
objectForce.AddToTail( vec3_origin );
// add a slot for friendly objects
pObjectList.AddToTail( NULL );
objectForce.AddToTail( vec3_origin );
CBaseCombatCharacter *pBCC = pInputOwnerEntity->MyCombatCharacterPointer();
IPhysicsFrictionSnapshot *pSnapshot = pObject->CreateFrictionSnapshot();
float objMass = pObject->GetMass();
while ( pSnapshot->IsValid() )
{
float force = pSnapshot->GetNormalForce();
if ( force > 0.0f )
{
IPhysicsObject *pOther = pSnapshot->GetObject(1);
CBaseEntity *pOtherEntity = static_cast<CBaseEntity *>(pOther->GetGameData());
if ( !pOtherEntity )
{
// object was just deleted, but we still have a contact point this frame...
// just assume it came from the world.
pOtherEntity = GetWorldEntity();
}
CBaseEntity *pOtherOwner = pOtherEntity;
if ( pOtherEntity->GetOwnerEntity() )
{
pOtherOwner = pOtherEntity->GetOwnerEntity();
}
int outIndex = 0;
if ( !pOther->IsMoveable() )
{
outIndex = 0;
}
// NavIgnored objects are often being pushed by a friendly
else if ( pBCC && (pBCC->IRelationType( pOtherOwner ) == D_LI || pOtherEntity->IsNavIgnored()) )
{
outIndex = 1;
}
// player held objects do no stress
else if ( pOther->GetGameFlags() & FVPHYSICS_PLAYER_HELD )
{
outIndex = 1;
}
else
{
if ( pOther->GetMass() >= VPHYSICS_LARGE_OBJECT_MASS )
{
if ( pInputOwnerEntity->GetGroundEntity() != pOtherEntity)
{
hasLargeObject = true;
}
}
// moveable, non-friendly
// aggregate contacts over each object to avoid greater stress in multiple contact cases
// NOTE: Contacts should be in order, so this shouldn't ever search, but just in case
outIndex = pObjectList.Count();
for ( int i = pObjectList.Count()-1; i >= 2; --i )
{
if ( pObjectList[i] == pOtherOwner )
{
outIndex = i;
break;
}
}
if ( outIndex == pObjectList.Count() )
{
pObjectList.AddToTail( pOtherOwner );
objectForce.AddToTail( vec3_origin );
}
}
if ( outIndex != 0 && pInputOwnerEntity->GetMoveType() != MOVETYPE_VPHYSICS && !IsPhysicallyControlled(pOtherEntity, pOther) )
{
// UNDONE: Test this! This is to remove any shadow/shadow stress. The game should handle this with blocked/damage
force = 0.0f;
}
Vector normal;
pSnapshot->GetSurfaceNormal( normal );
objectForce[outIndex] += normal * force;
}
pSnapshot->NextFrictionData();
}
pObject->DestroyFrictionSnapshot( pSnapshot );
pSnapshot = NULL;
// clear out all friendly force
objectForce[1].Init();
float sum = 0;
Vector negativeForce = vec3_origin;
Vector positiveForce = vec3_origin;
Assert( pObjectList.Count() == objectForce.Count() );
for ( int objectIndex = pObjectList.Count()-1; objectIndex >= 0; --objectIndex )
{
sum += objectForce[objectIndex].Length();
for ( int i = 0; i < 3; i++ )
{
if ( objectForce[objectIndex][i] < 0 )
{
negativeForce[i] -= objectForce[objectIndex][i];
}
else
{
positiveForce[i] += objectForce[objectIndex][i];
}
}
}
// "external" stress is two way (something pushes on the object and something else pushes back)
// so the set of minimum values per component are the projections of the two-way force
// "internal" stress is one way (the object is pushing against something OR something pushing back)
// the momentum must have come from inside the object (gravity, controller, etc)
Vector internalForce = vec3_origin;
Vector externalForce = vec3_origin;
for ( int i = 0; i < 3; i++ )
{
if ( negativeForce[i] < positiveForce[i] )
{
internalForce[i] = positiveForce[i] - negativeForce[i];
externalForce[i] = negativeForce[i];
}
else
{
internalForce[i] = negativeForce[i] - positiveForce[i];
externalForce[i] = positiveForce[i];
}
}
// sum is kg in / s
Vector gravVector;
physenv->GetGravity( &gravVector );
float gravity = gravVector.Length();
if ( pInputOwnerEntity->GetMoveType() != MOVETYPE_VPHYSICS && pObject->IsMoveable() )
{
Vector lastVel;
lastVel.Init();
if ( pObject->GetShadowController() )
{
pObject->GetShadowController()->GetLastImpulse( &lastVel );
}
else
{
if ( ( pObject->GetCallbackFlags() & CALLBACK_IS_PLAYER_CONTROLLER ) )
{
CBasePlayer *pPlayer = ToBasePlayer( pInputOwnerEntity );
IPhysicsPlayerController *pController = pPlayer ? pPlayer->GetPhysicsController() : NULL;
if ( pController )
{
pController->GetLastImpulse( &lastVel );
}
}
}
// Work in progress...
// Peek into the controller for this object. Look at the input velocity and make sure it's all
// accounted for in the computed stress. If not, redistribute external to internal as it's
// probably being reflected in a way we can't measure here.
float inputLen = lastVel.Length() * (1.0f / physenv->GetSimulationTimestep()) * objMass;
if ( inputLen > 0.0f )
{
float internalLen = internalForce.Length();
if ( internalLen < inputLen )
{
float ratio = internalLen / inputLen;
Vector delta = internalForce * (1.0f - ratio);
internalForce += delta;
float deltaLen = delta.Length();
sum -= deltaLen;
float extLen = VectorNormalize(externalForce) - deltaLen;
if ( extLen < 0 )
{
extLen = 0;
}
externalForce *= extLen;
}
}
}
float invGravity = gravity;
if ( invGravity <= 0 )
{
invGravity = 1.0f;
}
else
{
invGravity = 1.0f / invGravity;
}
sum *= invGravity;
internalForce *= invGravity;
externalForce *= invGravity;
if ( !pObject->IsMoveable() )
{
// the above algorithm will see almost all force as internal if the object is not moveable
// (it doesn't push on anything else, so nothing is reciprocated)
// exceptions for friction of a single other object with multiple contact points on this object
// But the game wants to see it all as external because obviously the object can't move, so it can't have
// internal stress
externalForce = internalForce;
internalForce.Init();
if ( !pObject->IsStatic() )
{
sum += objMass;
}
}
else
{
// assume object is at rest
if ( sum > objMass )
{
sum = objMass + (sum-objMass) * 0.5;
}
}
if ( pOutput )
{
pOutput->exertedStress = internalForce.Length();
pOutput->receivedStress = externalForce.Length();
pOutput->hasNonStaticStress = pObjectList.Count() > 2 ? true : false;
pOutput->hasLargeObjectContact = hasLargeObject;
}
// sum is now kg
return sum;
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CASWEnvShake::ApplyShake( ShakeCommand_t command )
{
if ( !HasSpawnFlags( SF_ASW_SHAKE_NO_VIEW ) )
{
bool air = (GetSpawnFlags() & SF_ASW_SHAKE_INAIR) ? true : false;
UTIL_ASW_ScreenShake( GetAbsOrigin(), Amplitude(), Frequency(), Duration(), Radius(), command, air );
}
if ( GetSpawnFlags() & SF_ASW_SHAKE_ROPES )
{
CRopeKeyframe::ShakeRopes( GetAbsOrigin(), Radius(), Frequency() );
}
if ( GetSpawnFlags() & SF_ASW_SHAKE_PHYSICS )
{
if ( !m_pShakeController )
{
m_pShakeController = physenv->CreateMotionController( &m_shakeCallback );
}
// do physics shake
switch( command )
{
case SHAKE_START:
{
m_stopTime = gpGlobals->curtime + Duration();
m_nextShake = 0;
m_pShakeController->ClearObjects();
SetNextThink( gpGlobals->curtime );
m_currentAmp = Amplitude();
CBaseEntity *list[1024];
float radius = Radius();
// probably checked "Shake Everywhere" do a big radius
if ( !radius )
{
radius = MAX_COORD_INTEGER;
}
Vector extents = Vector(radius, radius, radius);
Vector mins = GetAbsOrigin() - extents;
Vector maxs = GetAbsOrigin() + extents;
int count = UTIL_EntitiesInBox( list, 1024, mins, maxs, 0 );
for ( int i = 0; i < count; i++ )
{
//
// Only shake physics entities that players can see. This is one frame out of date
// so it's possible that we could miss objects if a player changed PVS this frame.
//
if ( ( list[i]->GetMoveType() == MOVETYPE_VPHYSICS ) )
{
IPhysicsObject *pPhys = list[i]->VPhysicsGetObject();
if ( pPhys && pPhys->IsMoveable() )
{
m_pShakeController->AttachObject( pPhys, false );
pPhys->Wake();
}
}
}
}
break;
case SHAKE_STOP:
m_pShakeController->ClearObjects();
break;
case SHAKE_AMPLITUDE:
m_currentAmp = Amplitude();
case SHAKE_FREQUENCY:
m_pShakeController->WakeObjects();
break;
}
}
}
bool CNPC_Dog::FindPhysicsObject( const char *pPickupName, CBaseEntity *pIgnore )
{
CBaseEntity *pEnt = NULL;
CBaseEntity *pNearest = NULL;
float flDist;
IPhysicsObject *pPhysObj = NULL;
float flNearestDist = 99999;
if ( pPickupName != NULL && strlen( pPickupName ) > 0 )
{
pEnt = gEntList.FindEntityByName( NULL, pPickupName );
if ( m_hUnreachableObjects.Find( pEnt ) == -1 )
{
m_bHasObject = false;
m_hPhysicsEnt = pEnt;
return true;
}
}
while ( ( pEnt = gEntList.FindEntityByClassname( pEnt, "prop_physics" ) ) != NULL )
{
//We don't want this one.
if ( pEnt == pIgnore )
continue;
if ( m_hUnreachableObjects.Find( pEnt ) != -1 )
continue;
pPhysObj = pEnt->VPhysicsGetObject();
if( pPhysObj == NULL )
continue;
if ( pPhysObj->GetMass() > DOG_MAX_THROW_MASS )
continue;
Vector center = pEnt->WorldSpaceCenter();
flDist = UTIL_DistApprox2D( GetAbsOrigin(), center );
vcollide_t *pCollide = modelinfo->GetVCollide( pEnt->GetModelIndex() );
if ( pCollide == NULL )
continue;
if ( pPhysObj->GetGameFlags() & FVPHYSICS_PLAYER_HELD )
continue;
if ( pPhysObj->IsMoveable() == false )
continue;
if ( pEnt->GetCollisionGroup() == COLLISION_GROUP_DEBRIS ||
pEnt->GetCollisionGroup() == COLLISION_GROUP_INTERACTIVE_DEBRIS )
continue;
if ( center.z > EyePosition().z )
continue;
if ( flDist >= flNearestDist )
continue;
if ( FVisible( pEnt ) == false )
continue;
pNearest = pEnt;
flNearestDist = flDist;
}
m_bHasObject = false;
m_hPhysicsEnt = pNearest;
if ( dog_debug.GetBool() == true )
{
if ( pNearest )
NDebugOverlay::Box( pNearest->WorldSpaceCenter(), pNearest->CollisionProp()->OBBMins(), pNearest->CollisionProp()->OBBMaxs(), 255, 0, 255, true, 3 );
}
if( m_hPhysicsEnt == NULL )
{
return false;
}
else
{
return true;
}
}
void PhysComputeSlideDirection( IPhysicsObject *pPhysics, const Vector &inputVelocity, const AngularImpulse &inputAngularVelocity,
Vector *pOutputVelocity, Vector *pOutputAngularVelocity, float minMass )
{
Vector velocity = inputVelocity;
AngularImpulse angVel = inputAngularVelocity;
Vector pos;
IPhysicsFrictionSnapshot *pSnapshot = pPhysics->CreateFrictionSnapshot();
while ( pSnapshot->IsValid() )
{
IPhysicsObject *pOther = pSnapshot->GetObject( 1 );
if ( !pOther->IsMoveable() || pOther->GetMass() > minMass )
{
Vector normal;
pSnapshot->GetSurfaceNormal( normal );
// BUGBUG: Figure out the correct rotation clipping equation
if ( pOutputAngularVelocity )
{
angVel = normal * DotProduct( angVel, normal );
#if 0
pSnapshot->GetContactPoint( point );
Vector point, dummy;
AngularImpulse angularClip, clip2;
pPhysics->CalculateVelocityOffset( normal, point, dummy, angularClip );
VectorNormalize( angularClip );
float proj = DotProduct( angVel, angularClip );
if ( proj > 0 )
{
angVel -= angularClip * proj;
}
CrossProduct( angularClip, normal, clip2 );
proj = DotProduct( angVel, clip2 );
if ( proj > 0 )
{
angVel -= clip2 * proj;
}
//NDebugOverlay::Line( point, point - normal * 20, 255, 0, 0, true, 0.1 );
#endif
}
// Determine how far along plane to slide based on incoming direction.
// NOTE: Normal points away from this object
float proj = DotProduct( velocity, normal );
if ( proj > 0.0f )
{
velocity -= normal * proj;
}
}
pSnapshot->NextFrictionData();
}
pPhysics->DestroyFrictionSnapshot( pSnapshot );
//NDebugOverlay::Line( pos, pos + unitVel * 20, 0, 0, 255, true, 0.1 );
if ( pOutputVelocity )
{
*pOutputVelocity = velocity;
}
if ( pOutputAngularVelocity )
{
*pOutputAngularVelocity = angVel;
}
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CPhysMagnet::Touch( CBaseEntity *pOther )
{
// Ignore triggers
if ( pOther->IsSolidFlagSet( FSOLID_NOT_SOLID ) )
return;
m_bHasHitSomething = true;
// Don't pickup if we're not active
if ( !m_bActive )
return;
// Hit our maximum?
if ( m_iMaxObjectsAttached && m_iMaxObjectsAttached <= GetNumAttachedObjects() )
return;
// Make sure it's made of metal
trace_t tr = GetTouchTrace();
char cTexType = TEXTURETYPE_Find( &tr );
if ( cTexType != CHAR_TEX_METAL && cTexType != CHAR_TEX_COMPUTER )
{
// See if the model is set to be metal
if ( Q_strncmp( Studio_GetDefaultSurfaceProps( GetModelPtr() ), "metal", 5 ) )
return;
}
IPhysicsObject *pPhysics = pOther->VPhysicsGetObject();
if ( pPhysics && pOther->GetMoveType() == MOVETYPE_VPHYSICS && pPhysics->IsMoveable() )
{
// Make sure we haven't already got this sucker on the magnet
int iCount = m_MagnettedEntities.Count();
for ( int i = 0; i < iCount; i++ )
{
if ( m_MagnettedEntities[i].hEntity == pOther )
return;
}
// We want to cast a long way to ensure our shadow shows up
pOther->SetShadowCastDistance( 2048 );
// Create a constraint between the magnet and this sucker
IPhysicsObject *pMagnetPhysObject = VPhysicsGetObject();
Assert( pMagnetPhysObject );
magnetted_objects_t newEntityOnMagnet;
newEntityOnMagnet.hEntity = pOther;
// Use the right constraint
if ( HasSpawnFlags( SF_MAGNET_ALLOWROTATION ) )
{
constraint_ballsocketparams_t ballsocket;
ballsocket.Defaults();
ballsocket.constraint.Defaults();
ballsocket.constraint.forceLimit = lbs2kg(m_forceLimit);
ballsocket.constraint.torqueLimit = lbs2kg(m_torqueLimit);
pMagnetPhysObject->WorldToLocal( ballsocket.constraintPosition[0], tr.endpos );
pPhysics->WorldToLocal( ballsocket.constraintPosition[1], tr.endpos );
//newEntityOnMagnet.pConstraint = physenv->CreateBallsocketConstraint( pMagnetPhysObject, pPhysics, m_pConstraintGroup, ballsocket );
newEntityOnMagnet.pConstraint = physenv->CreateBallsocketConstraint( pMagnetPhysObject, pPhysics, NULL, ballsocket );
}
else
{
constraint_fixedparams_t fixed;
fixed.Defaults();
fixed.InitWithCurrentObjectState( pMagnetPhysObject, pPhysics );
fixed.constraint.Defaults();
fixed.constraint.forceLimit = lbs2kg(m_forceLimit);
fixed.constraint.torqueLimit = lbs2kg(m_torqueLimit);
// FIXME: Use the magnet's constraint group.
//newEntityOnMagnet.pConstraint = physenv->CreateFixedConstraint( pMagnetPhysObject, pPhysics, m_pConstraintGroup, fixed );
newEntityOnMagnet.pConstraint = physenv->CreateFixedConstraint( pMagnetPhysObject, pPhysics, NULL, fixed );
}
newEntityOnMagnet.pConstraint->SetGameData( (void *) this );
m_MagnettedEntities.AddToTail( newEntityOnMagnet );
m_flTotalMass += pPhysics->GetMass();
}
DoMagnetSuck( pOther );
m_OnMagnetAttach.FireOutput( this, this );
}