void Etherform::findContact(VectorF *contactNormal)
{
SceneObject *contactObject = NULL;
Vector<SceneObject*> overlapObjects;
_findContact(&contactObject, contactNormal, &overlapObjects );
// Check for triggers, corpses and items.
const U32 filterMask = isGhost() ? sClientCollisionContactMask : sServerCollisionContactMask;
for ( U32 i=0; i < overlapObjects.size(); i++ )
{
SceneObject *obj = overlapObjects[i];
U32 objectMask = obj->getTypeMask();
if ( !( objectMask & filterMask ) )
continue;
// Check: triggers, tactical zones, corpses and items...
//
if (objectMask & TriggerObjectType)
{
Trigger* pTrigger = static_cast<Trigger*>( obj );
pTrigger->potentialEnterObject(this);
}
else if (objectMask & TacticalZoneObjectType)
{
TacticalZone* pZone = static_cast<TacticalZone*>( obj );
pZone->potentialEnterObject(this);
}
else if (objectMask & CorpseObjectType)
{
// If we've overlapped the worldbounding boxes, then that's it...
if ( getWorldBox().isOverlapped( obj->getWorldBox() ) )
{
ShapeBase* col = static_cast<ShapeBase*>( obj );
queueCollision(col,getVelocity() - col->getVelocity());
}
}
else if (objectMask & ItemObjectType)
{
// If we've overlapped the worldbounding boxes, then that's it...
Item* item = static_cast<Item*>( obj );
if ( getWorldBox().isOverlapped(item->getWorldBox()) &&
item->getCollisionObject() != this &&
!item->isHidden() )
queueCollision(item,getVelocity() - item->getVelocity());
}
}
mContactInfo.clear();
mContactInfo.contacted = contactObject != NULL;
mContactInfo.contactObject = contactObject;
if(mContactInfo.contacted)
mContactInfo.contactNormal = *contactNormal;
}
void Etherform::_handleCollision( const Collision &collision )
{
// Track collisions
if(!isGhost()
&& collision.object
&& collision.object != mContactInfo.contactObject)
{
queueCollision( collision.object, mVelocity - collision.object->getVelocity());
}
}
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() );
}
}
}
}