void Item::updatePos(const U32 /*mask*/, const F32 dt)
{
// Try and move
Point3F pos;
mObjToWorld.getColumn(3,&pos);
delta.posVec = pos;
bool contact = false;
bool nonStatic = false;
bool stickyNotify = false;
CollisionList collisionList;
F32 time = dt;
static Polyhedron sBoxPolyhedron;
static ExtrudedPolyList sExtrudedPolyList;
static EarlyOutPolyList sEarlyOutPolyList;
MatrixF collisionMatrix(true);
Point3F end = pos + mVelocity * time;
U32 mask = isServerObject() ? sServerCollisionMask : sClientCollisionMask;
// Part of our speed problem here is that we don't track contact surfaces, like we do
// with the player. In order to handle the most common and performance impacting
// instance of this problem, we'll use a ray cast to detect any contact surfaces below
// us. This won't be perfect, but it only needs to catch a few of these to make a
// big difference. We'll cast from the top center of the bounding box at the tick's
// beginning to the bottom center of the box at the end.
Point3F startCast((mObjBox.minExtents.x + mObjBox.maxExtents.x) * 0.5,
(mObjBox.minExtents.y + mObjBox.maxExtents.y) * 0.5,
mObjBox.maxExtents.z);
Point3F endCast((mObjBox.minExtents.x + mObjBox.maxExtents.x) * 0.5,
(mObjBox.minExtents.y + mObjBox.maxExtents.y) * 0.5,
mObjBox.minExtents.z);
collisionMatrix.setColumn(3, pos);
collisionMatrix.mulP(startCast);
collisionMatrix.setColumn(3, end);
collisionMatrix.mulP(endCast);
RayInfo rinfo;
bool doToughCollision = true;
disableCollision();
if (mCollisionObject)
mCollisionObject->disableCollision();
if (getContainer()->castRay(startCast, endCast, mask, &rinfo))
{
F32 bd = -mDot(mVelocity, rinfo.normal);
if (bd >= 0.0)
{
// Contact!
if (mDataBlock->sticky && rinfo.object->getTypeMask() & (STATIC_COLLISION_TYPEMASK)) {
mVelocity.set(0, 0, 0);
mAtRest = true;
mAtRestCounter = 0;
stickyNotify = true;
mStickyCollisionPos = rinfo.point;
mStickyCollisionNormal = rinfo.normal;
doToughCollision = false;;
} else {
// Subtract out velocity into surface and friction
VectorF fv = mVelocity + rinfo.normal * bd;
F32 fvl = fv.len();
if (fvl) {
F32 ff = bd * mDataBlock->friction;
if (ff < fvl) {
fv *= ff / fvl;
fvl = ff;
}
}
bd *= 1 + mDataBlock->elasticity;
VectorF dv = rinfo.normal * (bd + 0.002);
mVelocity += dv;
mVelocity -= fv;
// Keep track of what we hit
contact = true;
U32 typeMask = rinfo.object->getTypeMask();
if (!(typeMask & StaticObjectType))
nonStatic = true;
if (isServerObject() && (typeMask & ShapeBaseObjectType)) {
ShapeBase* col = static_cast<ShapeBase*>(rinfo.object);
queueCollision(col,mVelocity - col->getVelocity());
}
}
}
}
enableCollision();
if (mCollisionObject)
mCollisionObject->enableCollision();
if (doToughCollision)
{
U32 count;
for (count = 0; count < 3; count++)
{
// Build list from convex states here...
end = pos + mVelocity * time;
collisionMatrix.setColumn(3, end);
Box3F wBox = getObjBox();
collisionMatrix.mul(wBox);
Box3F testBox = wBox;
Point3F oldMin = testBox.minExtents;
Point3F oldMax = testBox.maxExtents;
testBox.minExtents.setMin(oldMin + (mVelocity * time));
testBox.maxExtents.setMin(oldMax + (mVelocity * time));
sEarlyOutPolyList.clear();
sEarlyOutPolyList.mNormal.set(0,0,0);
sEarlyOutPolyList.mPlaneList.setSize(6);
sEarlyOutPolyList.mPlaneList[0].set(wBox.minExtents,VectorF(-1,0,0));
sEarlyOutPolyList.mPlaneList[1].set(wBox.maxExtents,VectorF(0,1,0));
sEarlyOutPolyList.mPlaneList[2].set(wBox.maxExtents,VectorF(1,0,0));
sEarlyOutPolyList.mPlaneList[3].set(wBox.minExtents,VectorF(0,-1,0));
sEarlyOutPolyList.mPlaneList[4].set(wBox.minExtents,VectorF(0,0,-1));
sEarlyOutPolyList.mPlaneList[5].set(wBox.maxExtents,VectorF(0,0,1));
CollisionWorkingList& eorList = mConvex.getWorkingList();
CollisionWorkingList* eopList = eorList.wLink.mNext;
while (eopList != &eorList) {
if ((eopList->mConvex->getObject()->getTypeMask() & mask) != 0)
{
Box3F convexBox = eopList->mConvex->getBoundingBox();
if (testBox.isOverlapped(convexBox))
{
eopList->mConvex->getPolyList(&sEarlyOutPolyList);
if (sEarlyOutPolyList.isEmpty() == false)
break;
}
}
eopList = eopList->wLink.mNext;
}
if (sEarlyOutPolyList.isEmpty())
{
pos = end;
break;
}
collisionMatrix.setColumn(3, pos);
sBoxPolyhedron.buildBox(collisionMatrix, mObjBox, true);
// Build extruded polyList...
VectorF vector = end - pos;
sExtrudedPolyList.extrude(sBoxPolyhedron, vector);
sExtrudedPolyList.setVelocity(mVelocity);
sExtrudedPolyList.setCollisionList(&collisionList);
CollisionWorkingList& rList = mConvex.getWorkingList();
CollisionWorkingList* pList = rList.wLink.mNext;
while (pList != &rList) {
if ((pList->mConvex->getObject()->getTypeMask() & mask) != 0)
{
Box3F convexBox = pList->mConvex->getBoundingBox();
if (testBox.isOverlapped(convexBox))
{
pList->mConvex->getPolyList(&sExtrudedPolyList);
}
}
pList = pList->wLink.mNext;
}
if (collisionList.getTime() < 1.0)
{
// Set to collision point
F32 dt = time * collisionList.getTime();
pos += mVelocity * dt;
time -= dt;
// Pick the most resistant surface
F32 bd = 0;
const Collision* collision = 0;
for (int c = 0; c < collisionList.getCount(); c++) {
const Collision &cp = collisionList[c];
F32 dot = -mDot(mVelocity,cp.normal);
if (dot > bd) {
bd = dot;
collision = &cp;
}
}
if (collision && mDataBlock->sticky && collision->object->getTypeMask() & (STATIC_COLLISION_TYPEMASK)) {
mVelocity.set(0, 0, 0);
mAtRest = true;
mAtRestCounter = 0;
stickyNotify = true;
mStickyCollisionPos = collision->point;
mStickyCollisionNormal = collision->normal;
break;
} else {
// Subtract out velocity into surface and friction
if (collision) {
VectorF fv = mVelocity + collision->normal * bd;
F32 fvl = fv.len();
if (fvl) {
F32 ff = bd * mDataBlock->friction;
if (ff < fvl) {
fv *= ff / fvl;
fvl = ff;
}
}
bd *= 1 + mDataBlock->elasticity;
VectorF dv = collision->normal * (bd + 0.002);
mVelocity += dv;
mVelocity -= fv;
// Keep track of what we hit
contact = true;
U32 typeMask = collision->object->getTypeMask();
if (!(typeMask & StaticObjectType))
nonStatic = true;
if (isServerObject() && (typeMask & ShapeBaseObjectType)) {
ShapeBase* col = static_cast<ShapeBase*>(collision->object);
queueCollision(col,mVelocity - col->getVelocity());
}
}
}
}
else
{
pos = end;
break;
}
}
if (count == 3)
{
// Couldn't move...
mVelocity.set(0, 0, 0);
}
}
// If on the client, calculate delta for backstepping
if (isGhost()) {
delta.pos = pos;
delta.posVec -= pos;
delta.dt = 1;
}
// Update transform
MatrixF mat = mObjToWorld;
mat.setColumn(3,pos);
Parent::setTransform(mat);
enableCollision();
if (mCollisionObject)
mCollisionObject->enableCollision();
updateContainer();
if ( mPhysicsRep )
mPhysicsRep->setTransform( mat );
//
if (contact) {
// Check for rest condition
if (!nonStatic && mVelocity.len() < sAtRestVelocity) {
mVelocity.x = mVelocity.y = mVelocity.z = 0;
mAtRest = true;
mAtRestCounter = 0;
}
// Only update the client if we hit a non-static shape or
// if this is our final rest pos.
if (nonStatic || mAtRest)
setMaskBits(PositionMask);
}
// Collision callbacks. These need to be processed whether we hit
// anything or not.
if (!isGhost())
{
SimObjectPtr<Item> safePtr(this);
if (stickyNotify)
{
notifyCollision();
if(bool(safePtr))
onStickyCollision_callback( getIdString() );
}
else
notifyCollision();
// water
if(bool(safePtr))
{
if(!mInLiquid && mWaterCoverage != 0.0f)
{
mInLiquid = true;
if ( !isGhost() )
mDataBlock->onEnterLiquid_callback( this, mWaterCoverage, mLiquidType.c_str() );
}
else if(mInLiquid && mWaterCoverage == 0.0f)
{
mInLiquid = false;
if ( !isGhost() )
mDataBlock->onLeaveLiquid_callback( this, mLiquidType.c_str() );
}
}
}
}
//-----------------------------------------------------------------------------
//
// VActorPhysicsController::findCollision( pCollision );
//
// ...
//
//-----------------------------------------------------------------------------
bool VActorPhysicsController::findCollision( Collision *&pCollision )
{
// Setup Collision List.
static CollisionList sCollisionList;
sCollisionList.clear();
static Polyhedron sBoxPolyhedron;
static ExtrudedPolyList sExtrudedPolyList;
// Determine Positions.
const Point3F preTickPosition = getPosition();
const VectorF preTickVelocity = getVelocity();
const Point3F postTickPosition = preTickPosition + ( preTickVelocity * TickSec );
const VectorF postTickVector = postTickPosition - preTickPosition;
// Construct Scaled Box.
Box3F scaledBox = mObject->getObjBox();
scaledBox.minExtents.convolve( mObject->getScale() );
scaledBox.maxExtents.convolve( mObject->getScale() );
// Setup Polyherdron.
MatrixF collisionMatrix( true );
collisionMatrix.setPosition( preTickPosition );
sBoxPolyhedron.buildBox( collisionMatrix, scaledBox );
// Setup Extruded Poly List.
sExtrudedPolyList.extrude( sBoxPolyhedron, postTickVector );
sExtrudedPolyList.setVelocity( preTickVelocity );
sExtrudedPolyList.setCollisionList( &sCollisionList );
// Construct World Convex Box & Adjust for Sweep.
Box3F convexBox = scaledBox;
getTransform().mul( convexBox );
convexBox.minExtents += postTickVector;
convexBox.maxExtents += postTickVector;
// Determine the Collision Mask.
const U32 collisionMask = ( isInWater() ) ? ( sGroundCollisionMask | sMoveCollisionMask ) : sMoveCollisionMask;
// Build List of Contacts.
CollisionWorkingList &rList = mConvex.getWorkingList();
for ( CollisionWorkingList *pList = rList.wLink.mNext; pList != &rList; pList = pList->wLink.mNext )
{
Convex *convexShape = pList->mConvex;
// Valid Collision Target?
if ( !( convexShape->getObject()->getTypeMask() & collisionMask ) )
{
// No, Continue.
continue;
}
// Overlap?
const Box3F &collisionConvexBox = convexShape->getBoundingBox();
if ( convexBox.isOverlapped( collisionConvexBox ) )
{
// Build Contact Information.
convexShape->getPolyList( &sExtrudedPolyList );
}
}
// Valid Collision?
if ( sCollisionList.getCount() == 0 || sCollisionList.getTime() > 1.f )
{
// No, Quit Now.
return false;
}
// Use First Collision.
Collision *collision = &sCollisionList[0];
// More Collisions?
if ( sCollisionList.getCount() > 1 )
{
// Check for Better Contacts.
for ( Collision *cp = ( collision + 1 ); cp != ( collision + sCollisionList.getCount() ); cp++ )
{
if ( cp->faceDot > collision->faceDot )
{
// Use this One.
collision = cp;
}
}
}
// Store Reference.
pCollision = collision;
// Valid Collision.
return true;
}
//-----------------------------------------------------------------------------
//
// VActorPhysicsController::findGroundContact( pContactObject, pContactPoint, pContactNormal );
//
// ...
//
//-----------------------------------------------------------------------------
bool VActorPhysicsController::findGroundContact( SceneObject *&pContactObject, Point3F &pContactPoint, VectorF &pContactNormal )
{
// Setup Collision List.
static CollisionList sCollisionList;
sCollisionList.clear();
static Polyhedron sBoxPolyhedron;
static ExtrudedPolyList sExtrudedPolyList;
// Fetch Max Step Height.
const F32 stepHeight = mObject->getDataBlock()->getMaxStepHeight();
// Determine Positions.
const Point3F preTickPosition = getPosition() + Point3F( 0.f, 0.f, stepHeight );
const VectorF preTickVelocity = getVelocity() + mGravity - VectorF( 0.f, 0.f, stepHeight / TickSec );
const Point3F postTickPosition = preTickPosition + ( preTickVelocity * TickSec );
const VectorF postTickVector = postTickPosition - preTickPosition;
// Construct Scaled Box.
Box3F scaledBox = mObject->getObjBox();
scaledBox.minExtents.convolve( mObject->getScale() );
scaledBox.maxExtents.convolve( mObject->getScale() );
// Setup Polyherdron.
MatrixF collisionMatrix( true );
collisionMatrix.setPosition( preTickPosition );
sBoxPolyhedron.buildBox( collisionMatrix, scaledBox, true );
// Setup Extruded Poly List.
sExtrudedPolyList.extrude( sBoxPolyhedron, postTickVector );
sExtrudedPolyList.setVelocity( preTickVelocity );
sExtrudedPolyList.setCollisionList( &sCollisionList );
// Construct World Convex Box & Adjust for Sweep.
Box3F convexBox = scaledBox;
getTransform().mul( convexBox );
convexBox.minExtents += postTickVector;
convexBox.maxExtents += postTickVector;
// Build List of Contacts.
CollisionWorkingList &rList = mConvex.getWorkingList();
for ( CollisionWorkingList *pList = rList.wLink.mNext; pList != &rList; pList = pList->wLink.mNext )
{
Convex *convexShape = pList->mConvex;
// Ground Object?
if ( !( convexShape->getObject()->getTypeMask() & sGroundCollisionMask ) )
{
// No, Continue.
continue;
}
// Overlap?
const Box3F &collisionConvexBox = convexShape->getBoundingBox();
if ( convexBox.isOverlapped( collisionConvexBox ) )
{
// Build Contact Information.
convexShape->getPolyList( &sExtrudedPolyList );
}
}
// Valid Collision?
if ( sCollisionList.getCount() == 0 || sCollisionList.getTime() < 0.f || sCollisionList.getTime() > 1.f )
{
// No, Quit Now.
return false;
}
// Use First Collision.
Collision *collision = &sCollisionList[0];
// More Collisions?
if ( sCollisionList.getCount() > 1 )
{
// Check for Better Contacts.
for ( Collision *cp = ( collision + 1 ); cp != ( collision + sCollisionList.getCount() ); cp++ )
{
if ( cp->faceDot > collision->faceDot )
{
// Use this One.
collision = cp;
}
}
}
// Set Properties.
pContactObject = collision->object;
//pContactPoint = collision->point;
pContactPoint = ( preTickPosition + ( preTickVelocity * TickSec * sCollisionList.getTime() ) );
pContactNormal = collision->normal;
// Valid Contact.
return true;
}
Point3F Etherform::_move( const F32 travelTime, Collision *outCol )
{
// Try and move to new pos
F32 totalMotion = 0.0f;
// TODO: not used?
//F32 initialSpeed = mVelocity.len();
Point3F start;
Point3F initialPosition;
getTransform().getColumn(3,&start);
initialPosition = start;
static CollisionList collisionList;
static CollisionList physZoneCollisionList;
collisionList.clear();
physZoneCollisionList.clear();
MatrixF collisionMatrix(true);
collisionMatrix.setColumn(3, start);
VectorF firstNormal(0.0f, 0.0f, 0.0f);
F32 time = travelTime;
U32 count = 0;
static Polyhedron sBoxPolyhedron;
static ExtrudedPolyList sExtrudedPolyList;
static ExtrudedPolyList sPhysZonePolyList;
for (; count < sMoveRetryCount; count++) {
F32 speed = mVelocity.len();
if(!speed)
break;
Point3F end = start + mVelocity * time;
Point3F distance = end - start;
if (mFabs(distance.x) < mObjBox.len_x() &&
mFabs(distance.y) < mObjBox.len_y() &&
mFabs(distance.z) < mObjBox.len_z())
{
// We can potentially early out of this. If there are no polys in the clipped polylist at our
// end position, then we can bail, and just set start = end;
Box3F wBox = mScaledBox;
wBox.minExtents += end;
wBox.maxExtents += end;
static EarlyOutPolyList eaPolyList;
eaPolyList.clear();
eaPolyList.mNormal.set(0.0f, 0.0f, 0.0f);
eaPolyList.mPlaneList.clear();
eaPolyList.mPlaneList.setSize(6);
eaPolyList.mPlaneList[0].set(wBox.minExtents,VectorF(-1.0f, 0.0f, 0.0f));
eaPolyList.mPlaneList[1].set(wBox.maxExtents,VectorF(0.0f, 1.0f, 0.0f));
eaPolyList.mPlaneList[2].set(wBox.maxExtents,VectorF(1.0f, 0.0f, 0.0f));
eaPolyList.mPlaneList[3].set(wBox.minExtents,VectorF(0.0f, -1.0f, 0.0f));
eaPolyList.mPlaneList[4].set(wBox.minExtents,VectorF(0.0f, 0.0f, -1.0f));
eaPolyList.mPlaneList[5].set(wBox.maxExtents,VectorF(0.0f, 0.0f, 1.0f));
// Build list from convex states here...
CollisionWorkingList& rList = mConvex.getWorkingList();
CollisionWorkingList* pList = rList.wLink.mNext;
while (pList != &rList) {
Convex* pConvex = pList->mConvex;
if (pConvex->getObject()->getTypeMask() & sCollisionMoveMask) {
Box3F convexBox = pConvex->getBoundingBox();
if (wBox.isOverlapped(convexBox))
{
// No need to separate out the physical zones here, we want those
// to cause a fallthrough as well...
pConvex->getPolyList(&eaPolyList);
}
}
pList = pList->wLink.mNext;
}
if (eaPolyList.isEmpty())
{
totalMotion += (end - start).len();
start = end;
break;
}
}
collisionMatrix.setColumn(3, start);
sBoxPolyhedron.buildBox(collisionMatrix, mScaledBox, true);
// Setup the bounding box for the extrudedPolyList
Box3F plistBox = mScaledBox;
collisionMatrix.mul(plistBox);
Point3F oldMin = plistBox.minExtents;
Point3F oldMax = plistBox.maxExtents;
plistBox.minExtents.setMin(oldMin + (mVelocity * time) - Point3F(0.1f, 0.1f, 0.1f));
plistBox.maxExtents.setMax(oldMax + (mVelocity * time) + Point3F(0.1f, 0.1f, 0.1f));
// Build extruded polyList...
VectorF vector = end - start;
sExtrudedPolyList.extrude(sBoxPolyhedron,vector);
sExtrudedPolyList.setVelocity(mVelocity);
sExtrudedPolyList.setCollisionList(&collisionList);
sPhysZonePolyList.extrude(sBoxPolyhedron,vector);
sPhysZonePolyList.setVelocity(mVelocity);
sPhysZonePolyList.setCollisionList(&physZoneCollisionList);
// Build list from convex states here...
CollisionWorkingList& rList = mConvex.getWorkingList();
CollisionWorkingList* pList = rList.wLink.mNext;
while (pList != &rList) {
Convex* pConvex = pList->mConvex;
if (pConvex->getObject()->getTypeMask() & sCollisionMoveMask) {
Box3F convexBox = pConvex->getBoundingBox();
if (plistBox.isOverlapped(convexBox))
{
if (pConvex->getObject()->getTypeMask() & PhysicalZoneObjectType)
pConvex->getPolyList(&sPhysZonePolyList);
else
pConvex->getPolyList(&sExtrudedPolyList);
}
}
pList = pList->wLink.mNext;
}
// Take into account any physical zones...
for (U32 j = 0; j < physZoneCollisionList.getCount(); j++)
{
AssertFatal(dynamic_cast<PhysicalZone*>(physZoneCollisionList[j].object), "Bad phys zone!");
const PhysicalZone* pZone = (PhysicalZone*)physZoneCollisionList[j].object;
if (pZone->isActive())
mVelocity *= pZone->getVelocityMod();
}
if (collisionList.getCount() != 0 && collisionList.getTime() < 1.0f)
{
// Set to collision point
F32 velLen = mVelocity.len();
F32 dt = time * getMin(collisionList.getTime(), 1.0f);
start += mVelocity * dt;
time -= dt;
totalMotion += velLen * dt;
// Back off...
if ( velLen > 0.f ) {
F32 newT = getMin(0.01f / velLen, dt);
start -= mVelocity * newT;
totalMotion -= velLen * newT;
}
// Pick the surface most parallel to the face that was hit.
const Collision *collision = &collisionList[0];
const Collision *cp = collision + 1;
const Collision *ep = collision + collisionList.getCount();
for (; cp != ep; cp++)
{
if (cp->faceDot > collision->faceDot)
collision = cp;
}
F32 bd = -mDot(mVelocity, collision->normal);
// Copy this collision out so
// we can use it to do impacts
// and query collision.
*outCol = *collision;
// Subtract out velocity
VectorF dv = collision->normal * (bd + sNormalElasticity);
mVelocity += dv;
if (count == 0)
{
firstNormal = collision->normal;
}
else
{
if (count == 1)
{
// Re-orient velocity along the crease.
if (mDot(dv,firstNormal) < 0.0f &&
mDot(collision->normal,firstNormal) < 0.0f)
{
VectorF nv;
mCross(collision->normal,firstNormal,&nv);
F32 nvl = nv.len();
if (nvl)
{
if (mDot(nv,mVelocity) < 0.0f)
nvl = -nvl;
nv *= mVelocity.len() / nvl;
mVelocity = nv;
}
}
}
}
}
else
{
totalMotion += (end - start).len();
start = end;
break;
}
}
if (count == sMoveRetryCount)
{
// Failed to move
start = initialPosition;
mVelocity.set(0.0f, 0.0f, 0.0f);
}
return start;
}