//----------------------------------------------------------------------------
void Item::updateWorkingCollisionSet(const U32 mask, const F32 dt)
{
// It is assumed that we will never accelerate more than 10 m/s for gravity...
//
Point3F scaledVelocity = mVelocity * dt;
F32 len = scaledVelocity.len();
F32 newLen = len + (10 * dt);
// Check to see if it is actually necessary to construct the new working list,
// or if we can use the cached version from the last query. We use the x
// component of the min member of the mWorkingQueryBox, which is lame, but
// it works ok.
bool updateSet = false;
Box3F convexBox = mConvex.getBoundingBox(getTransform(), getScale());
F32 l = (newLen * 1.1) + 0.1; // from Convex::updateWorkingList
convexBox.minExtents -= Point3F(l, l, l);
convexBox.maxExtents += Point3F(l, l, l);
// Check containment
{
if (mWorkingQueryBox.minExtents.x != -1e9)
{
if (mWorkingQueryBox.isContained(convexBox) == false)
{
// Needed region is outside the cached region. Update it.
updateSet = true;
}
else
{
// We can leave it alone, we're still inside the cached region
}
}
else
{
// Must update
updateSet = true;
}
}
// Actually perform the query, if necessary
if (updateSet == true)
{
mWorkingQueryBox = convexBox;
mWorkingQueryBox.minExtents -= Point3F(2 * l, 2 * l, 2 * l);
mWorkingQueryBox.maxExtents += Point3F(2 * l, 2 * l, 2 * l);
disableCollision();
if (mCollisionObject)
mCollisionObject->disableCollision();
mConvex.updateWorkingList(mWorkingQueryBox, mask);
if (mCollisionObject)
mCollisionObject->enableCollision();
enableCollision();
}
}
void Etherform::updateWorkingCollisionSet()
{
// First, we need to adjust our velocity for possible acceleration. It is assumed
// that we will never accelerate more than 20 m/s for gravity, plus 10 m/s for
// jetting, and an equivalent 10 m/s for jumping. We also assume that the
// working list is updated on a Tick basis, which means we only expand our
// box by the possible movement in that tick.
Point3F scaledVelocity = mVelocity * TickSec;
F32 len = scaledVelocity.len();
F32 newLen = len + (10.0f * TickSec);
// Check to see if it is actually necessary to construct the new working list,
// or if we can use the cached version from the last query. We use the x
// component of the min member of the mWorkingQueryBox, which is lame, but
// it works ok.
bool updateSet = false;
Box3F convexBox = mConvex.getBoundingBox(getTransform(), getScale());
F32 l = (newLen * 1.1f) + 0.1f; // from Convex::updateWorkingList
const Point3F lPoint( l, l, l );
convexBox.minExtents -= lPoint;
convexBox.maxExtents += lPoint;
// Check containment
if (mWorkingQueryBox.minExtents.x != -1e9f)
{
if (mWorkingQueryBox.isContained(convexBox) == false)
// Needed region is outside the cached region. Update it.
updateSet = true;
}
else
{
// Must update
updateSet = true;
}
// Actually perform the query, if necessary
if (updateSet == true)
{
const Point3F twolPoint( 2.0f * l, 2.0f * l, 2.0f * l );
mWorkingQueryBox = convexBox;
mWorkingQueryBox.minExtents -= twolPoint;
mWorkingQueryBox.maxExtents += twolPoint;
disableCollision();
mConvex.updateWorkingList(mWorkingQueryBox,
isGhost() ? sClientCollisionContactMask : sServerCollisionContactMask);
enableCollision();
}
}
ofxMSAPhysics::ofxMSAPhysics() {
verbose = false;
setTimeStep(0.000010);
setDrag();
setNumIterations();
enableCollision();
setGravity();
clearWorldSize();
#ifdef MSAPHYSICS_USE_RECORDER
_frameCounter = 0;
setReplayMode(OFX_MSA_DATA_IDLE);
setReplayFilename("recordedData/physics/physics");
#endif
}
F32 FlyingVehicle::getHeight()
{
Point3F sp,ep;
RayInfo collision;
F32 height = (createHeightOn) ? mDataBlock->createHoverHeight : mDataBlock->hoverHeight;
F32 r = 10 + height;
getTransform().getColumn(3, &sp);
ep.x = sp.x;
ep.y = sp.y;
ep.z = sp.z - r;
disableCollision();
if( !mContainer->castRay(sp, ep, sClientCollisionMask, &collision) == true )
collision.t = 1;
enableCollision();
return (r * collision.t - height) / 10;
}
void Particle::init(Vec3f pos, float m, float d) {
_params = NULL;
_world = NULL;
_pos = _oldPos = pos;
setMass(m);
setDrag(d);
setBounce();
setRadius();
enableCollision();
makeFree();
_isDead = false;
_age = 0;
verbose = true;
data = NULL;
setClassName("Particle");
}
bool ForestWindEmitter::onAdd()
{
if ( !Parent::onAdd() )
return false;
// Only the client side actually does wind.
if ( isClientObject() )
{
// TODO: wasn't this a big hack we already fixed better?
//Projectile::getGhostReceivedSignal().notify( this, &ForestWindEmitter::_onMountObjectGhostReceived );
_initWind();
WINDMGR->addEmitter( this );
}
Point3F boxRad( 0, 0, 0 );
if ( !isRadialEmitter() )
boxRad.set( 10000.0f, 10000.0f, 10000.0f );
else
boxRad.set( mWindRadius, mWindRadius, mWindRadius );
mObjBox.set( -boxRad, boxRad );
resetWorldBox();
enableCollision();
// If we are we editing the mission then
// be sure to add us to the scene.
if ( gEditingMission || mHasMount )
{
addToScene();
mAddedToScene = true;
}
return true;
}
void AITurretShape::_trackTarget(F32 dt)
{
// Only on server
if (isClientObject())
return;
// We can only track a target if we have one
if (!mTarget.isValid())
return;
Point3F targetPos = mTarget.target->getBoxCenter();
// Can we see the target?
MatrixF aimMat;
getAimTransform(aimMat);
Point3F start;
aimMat.getColumn(3, &start);
RayInfo ri;
Point3F sightPoint;
disableCollision();
bool los = _testTargetLineOfSight(start, mTarget.target, sightPoint);
enableCollision();
if (!los)
{
// Target is blocked. Should we try to track from its last
// known position and velocity?
SimTime curTime = Sim::getCurrentTime();
if ( (curTime - mTarget.lastSightTime) > (mDataBlock->trackLostTargetTime * 1000.0f) )
{
// Time's up. Stop tracking.
_cleanupTargetAndTurret();
return;
}
// Use last known information to attempt to
// continue to track target for a while.
targetPos = mTarget.lastPos + mTarget.lastVel * F32(curTime - mTarget.lastSightTime) / 1000.0f;
}
else
{
// Target is visible
// We only track targets that are alive
if (mTarget.target->getDamageState() != Enabled)
{
// We can't track any more
_cleanupTargetAndTurret();
return;
}
targetPos = sightPoint;
// Store latest target info
mTarget.lastPos = targetPos;
mTarget.lastVel = mTarget.target->getVelocity();
mTarget.lastSightTime = Sim::getCurrentTime();
}
// Calculate angles to face the target, specifically the part that we can see
VectorF toTarget;
MatrixF mat;
S32 node = mDataBlock->aimNode;
if (node != -1)
{
// Get the current position of our node
MatrixF* nodeTrans = &mShapeInstance->mNodeTransforms[node];
Point3F currentPos;
nodeTrans->getColumn(3, ¤tPos);
// Turn this into a matrix we can use to put the target
// position into our space.
MatrixF nodeMat(true);
nodeMat.setColumn(3, currentPos);
mat.mul(mObjToWorld, nodeMat);
mat.affineInverse();
}
else
{
mat = mWorldToObj;
}
mat.mulP(targetPos, &toTarget);
// lead the target
F32 timeToTargetSquared = (mWeaponLeadVelocitySquared > 0) ? toTarget.lenSquared() / mWeaponLeadVelocitySquared : 0;
if (timeToTargetSquared > 1.0)
{
targetPos = targetPos + (mTarget.lastVel * mSqrt(timeToTargetSquared));
mat.mulP(targetPos, &toTarget);
}
F32 yaw, pitch;
MathUtils::getAnglesFromVector(toTarget, yaw, pitch);
if (yaw > M_PI_F)
yaw = yaw - M_2PI_F;
//if (pitch > M_PI_F)
// pitch = -(pitch - M_2PI_F);
Point3F rot(-pitch, 0.0f, yaw);
// If we have a rotation rate make sure we follow it
if (mHeadingRate > 0)
{
F32 rate = mHeadingRate * dt;
F32 rateCheck = mFabs(rot.z - mRot.z);
if (rateCheck > rate)
{
// This will clamp the new value to the rate regardless if it
// is increasing or decreasing.
rot.z = mClampF(rot.z, mRot.z-rate, mRot.z+rate);
}
}
if (mPitchRate > 0)
{
F32 rate = mPitchRate * dt;
F32 rateCheck = mFabs(rot.x - mRot.x);
if (rateCheck > rate)
{
// This will clamp the new value to the rate regardless if it
// is increasing or decreasing.
rot.x = mClampF(rot.x, mRot.x-rate, mRot.x+rate);
}
}
// Test if the rotation to the target is outside of our limits
if (_outsideLimits(rot))
{
// We can't track any more
_cleanupTargetAndTurret();
return;
}
// Test if the target is out of weapons range
if (toTarget.lenSquared() > mWeaponRangeSquared)
{
// We can't track any more
_cleanupTargetAndTurret();
return;
}
mRot = rot;
_setRotation( mRot );
setMaskBits(TurretUpdateMask);
}
void AITurretShape::_performScan()
{
// Only on server
if (isClientObject())
return;
// Are we ready for a scan?
--mTicksToNextScan;
if (mTicksToNextScan > 0)
return;
_cleanupPotentialTargets();
_setScanBox();
// Set up for the scan
getScanTransform(mScanWorkspaceScanMat);
mScanWorkspaceScanWorldMat = mScanWorkspaceScanMat;
mScanWorkspaceScanWorldMat.affineInverse();
disableCollision();
for ( SimSetIterator iter(&mIgnoreObjects); *iter; ++iter )
{
ShapeBase* obj = static_cast<ShapeBase*>( *iter );
obj->disableCollision();
}
gServerContainer.findObjects( mTransformedScanBox, sScanTypeMask, _scanCallback, (void*)this );
for ( SimSetIterator iter(&mIgnoreObjects); *iter; ++iter )
{
ShapeBase* obj = static_cast<ShapeBase*>( *iter );
obj->enableCollision();
}
enableCollision();
if (mPotentialTargets.size() == 0)
{
// No targets in range. Clear out our current target, if necessary.
_lostTarget();
}
else
{
// Sort the targets
comparePoint = getPosition();
dQsort(mPotentialTargets.address(),mPotentialTargets.size(),sizeof(SimObjectList::value_type),_sortCallback);
// Go through the targets in order to find one that is not blocked from view
Point3F start;
mScanWorkspaceScanMat.getColumn(3, &start);
S32 index = 0;
bool los = false;
disableCollision();
for (index=0; index < mPotentialTargets.size(); ++index)
{
ShapeBase* shape = (ShapeBase*)mPotentialTargets[index];
Point3F sightPoint;
los = _testTargetLineOfSight(start, shape, sightPoint);
// Check if we have a clear line of sight
if (los)
break;
}
enableCollision();
// If we found a valid, visible target (no hits between here and there), latch on to it
if (los)
{
_gainedTarget((ShapeBase*)mPotentialTargets[index]);
}
}
// Prepare for next scan period
mTicksToNextScan = mScanTickFrequency;
if (mScanTickFrequencyVariance > 0)
{
mTicksToNextScan += gRandGen.randI(0, mScanTickFrequencyVariance);
}
}
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() );
}
}
}
}
void Projectile::simulate( F32 dt )
{
if ( isServerObject() && mCurrTick >= mDataBlock->lifetime )
{
deleteObject();
return;
}
if ( mHasExploded )
return;
// ... otherwise, we have to do some simulation work.
RayInfo rInfo;
Point3F oldPosition;
Point3F newPosition;
oldPosition = mCurrPosition;
if ( mDataBlock->isBallistic )
mCurrVelocity.z -= 9.81 * mDataBlock->gravityMod * dt;
newPosition = oldPosition + mCurrVelocity * dt;
// disable the source objects collision reponse for a short time while we
// determine if the projectile is capable of moving from the old position
// to the new position, otherwise we'll hit ourself
bool disableSourceObjCollision = (mSourceObject.isValid() && mCurrTick <= SourceIdTimeoutTicks);
if ( disableSourceObjCollision )
mSourceObject->disableCollision();
disableCollision();
// Determine if the projectile is going to hit any object between the previous
// position and the new position. This code is executed both on the server
// and on the client (for prediction purposes). It is possible that the server
// will have registered a collision while the client prediction has not. If this
// happens the client will be corrected in the next packet update.
// Raycast the abstract PhysicsWorld if a PhysicsPlugin exists.
bool hit = false;
if ( mPhysicsWorld )
hit = mPhysicsWorld->castRay( oldPosition, newPosition, &rInfo, Point3F( newPosition - oldPosition) * mDataBlock->impactForce );
else
hit = getContainer()->castRay(oldPosition, newPosition, csmDynamicCollisionMask | csmStaticCollisionMask, &rInfo);
if ( hit )
{
// make sure the client knows to bounce
if ( isServerObject() && ( rInfo.object->getTypeMask() & csmStaticCollisionMask ) == 0 )
setMaskBits( BounceMask );
MatrixF xform( true );
xform.setColumn( 3, rInfo.point );
setTransform( xform );
mCurrPosition = rInfo.point;
// Get the object type before the onCollision call, in case
// the object is destroyed.
U32 objectType = rInfo.object->getTypeMask();
// re-enable the collision response on the source object since
// we need to process the onCollision and explode calls
if ( disableSourceObjCollision )
mSourceObject->enableCollision();
// Ok, here is how this works:
// onCollision is called to notify the server scripts that a collision has occurred, then
// a call to explode is made to start the explosion process. The call to explode is made
// twice, once on the server and once on the client.
// The server process is responsible for two things:
// 1) setting the ExplosionMask network bit to guarantee that the client calls explode
// 2) initiate the explosion process on the server scripts
// The client process is responsible for only one thing:
// 1) drawing the appropriate explosion
// It is possible that during the processTick the server may have decided that a hit
// has occurred while the client prediction has decided that a hit has not occurred.
// In this particular scenario the client will have failed to call onCollision and
// explode during the processTick. However, the explode function will be called
// during the next packet update, due to the ExplosionMask network bit being set.
// onCollision will remain uncalled on the client however, therefore no client
// specific code should be placed inside the function!
onCollision( rInfo.point, rInfo.normal, rInfo.object );
// Next order of business: do we explode on this hit?
if ( mCurrTick > mDataBlock->armingDelay || mDataBlock->armingDelay == 0 )
{
mCurrVelocity = Point3F::Zero;
explode( rInfo.point, rInfo.normal, objectType );
}
if ( mDataBlock->isBallistic )
{
// Otherwise, this represents a bounce. First, reflect our velocity
// around the normal...
Point3F bounceVel = mCurrVelocity - rInfo.normal * (mDot( mCurrVelocity, rInfo.normal ) * 2.0);
mCurrVelocity = bounceVel;
// Add in surface friction...
Point3F tangent = bounceVel - rInfo.normal * mDot(bounceVel, rInfo.normal);
mCurrVelocity -= tangent * mDataBlock->bounceFriction;
// Now, take elasticity into account for modulating the speed of the grenade
mCurrVelocity *= mDataBlock->bounceElasticity;
// Set the new position to the impact and the bounce
// will apply on the next frame.
//F32 timeLeft = 1.0f - rInfo.t;
newPosition = oldPosition = rInfo.point + rInfo.normal * 0.05f;
}
else
{
mCurrVelocity = Point3F::Zero;
}
}
// re-enable the collision response on the source object now
// that we are done processing the ballistic movement
if ( disableSourceObjCollision )
mSourceObject->enableCollision();
enableCollision();
if ( isClientObject() )
{
emitParticles( mCurrPosition, newPosition, mCurrVelocity, U32( dt * 1000.0f ) );
updateSound();
}
mCurrDeltaBase = newPosition;
mCurrBackDelta = mCurrPosition - newPosition;
mCurrPosition = newPosition;
MatrixF xform( true );
xform.setColumn( 3, mCurrPosition );
setTransform( xform );
}
void TurretShape::getCameraTransform(F32* pos,MatrixF* mat)
{
// Returns camera to world space transform
// Handles first person / third person camera position
if (isServerObject() && mShapeInstance)
mShapeInstance->animateNodeSubtrees(true);
if (*pos == 0) {
getRenderEyeTransform(mat);
return;
}
// Get the shape's camera parameters.
F32 min,max;
MatrixF rot;
Point3F offset;
getCameraParameters(&min,&max,&offset,&rot);
// Start with the current eye position
MatrixF eye;
getRenderEyeTransform(&eye);
// Build a transform that points along the eye axis
// but where the Z axis is always up.
{
MatrixF cam(1);
VectorF x,y,z(0,0,1);
eye.getColumn(1, &y);
mCross(y, z, &x);
x.normalize();
mCross(x, y, &z);
z.normalize();
cam.setColumn(0,x);
cam.setColumn(1,y);
cam.setColumn(2,z);
mat->mul(cam,rot);
}
// Camera is positioned straight back along the eye's -Y axis.
// A ray is cast to make sure the camera doesn't go through
// anything solid.
VectorF vp,vec;
vp.x = vp.z = 0;
vp.y = -(max - min) * *pos;
eye.mulV(vp,&vec);
// Use the camera node as the starting position if it exists.
Point3F osp,sp;
if (mDataBlock->cameraNode != -1)
{
mShapeInstance->mNodeTransforms[mDataBlock->cameraNode].getColumn(3,&osp);
getRenderTransform().mulP(osp,&sp);
}
else
eye.getColumn(3,&sp);
// Make sure we don't hit ourself...
disableCollision();
if (isMounted())
getObjectMount()->disableCollision();
// Cast the ray into the container database to see if we're going
// to hit anything.
RayInfo collision;
Point3F ep = sp + vec + offset;
if (mContainer->castRay(sp, ep,
~(WaterObjectType | GameBaseObjectType | DefaultObjectType | sTriggerMask),
&collision) == true) {
// Shift the collision point back a little to try and
// avoid clipping against the front camera plane.
F32 t = collision.t - (-mDot(vec, collision.normal) / vec.len()) * 0.1;
if (t > 0.0f)
ep = sp + offset + (vec * t);
else
eye.getColumn(3,&ep);
}
mat->setColumn(3,ep);
// Re-enable our collision.
if (isMounted())
getObjectMount()->enableCollision();
enableCollision();
// Apply Camera FX.
mat->mul( gCamFXMgr.getTrans() );
}
