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);
}
//----------------------------------------------------------------------------
/// Core rendering method for this control.
///
/// This method scans through all the current client ShapeBase objects.
/// If one is named, it displays the name and damage information for it.
///
/// Information is offset from the center of the object's bounding box,
/// unless the object is a PlayerObjectType, in which case the eye point
/// is used.
///
/// @param updateRect Extents of control.
void afxGuiTextHud::onRender( Point2I, const RectI &updateRect)
{
// Background fill first
if (mShowFill)
GFX->getDrawUtil()->drawRectFill(updateRect, mFillColor.toColorI());
// Must be in a TS Control
GuiTSCtrl *parent = dynamic_cast<GuiTSCtrl*>(getParent());
if (!parent) return;
// Must have a connection and control object
GameConnection* conn = GameConnection::getConnectionToServer();
if (!conn)
return;
GameBase * control = dynamic_cast<GameBase*>(conn->getControlObject());
if (!control)
return;
// Get control camera info
MatrixF cam;
Point3F camPos;
VectorF camDir;
conn->getControlCameraTransform(0,&cam);
cam.getColumn(3, &camPos);
cam.getColumn(1, &camDir);
F32 camFovCos;
conn->getControlCameraFov(&camFovCos);
camFovCos = mCos(mDegToRad(camFovCos) / 2);
// Visible distance info & name fading
F32 visDistance = gClientSceneGraph->getVisibleDistance();
F32 visDistanceSqr = visDistance * visDistance;
F32 fadeDistance = visDistance * mDistanceFade;
// Collision info. We're going to be running LOS tests and we
// don't want to collide with the control object.
static U32 losMask = TerrainObjectType | TerrainLikeObjectType | ShapeBaseObjectType;
if (!mEnableControlObjectOcclusion)
control->disableCollision();
if (mLabelAllShapes)
{
// This section works just like GuiShapeNameHud and renders labels for
// all the shapes.
// All ghosted objects are added to the server connection group,
// so we can find all the shape base objects by iterating through
// our current connection.
for (SimSetIterator itr(conn); *itr; ++itr)
{
///if ((*itr)->getTypeMask() & ShapeBaseObjectType)
///{
ShapeBase* shape = dynamic_cast<ShapeBase*>(*itr);
if ( shape ) {
if (shape != control && shape->getShapeName())
{
// Target pos to test, if it's a player run the LOS to his eye
// point, otherwise we'll grab the generic box center.
Point3F shapePos;
if (shape->getTypeMask() & PlayerObjectType)
{
MatrixF eye;
// Use the render eye transform, otherwise we'll see jittering
shape->getRenderEyeTransform(&eye);
eye.getColumn(3, &shapePos);
}
else
{
// Use the render transform instead of the box center
// otherwise it'll jitter.
MatrixF srtMat = shape->getRenderTransform();
srtMat.getColumn(3, &shapePos);
}
VectorF shapeDir = shapePos - camPos;
// Test to see if it's in range
F32 shapeDist = shapeDir.lenSquared();
if (shapeDist == 0 || shapeDist > visDistanceSqr)
continue;
shapeDist = mSqrt(shapeDist);
// Test to see if it's within our viewcone, this test doesn't
// actually match the viewport very well, should consider
// projection and box test.
shapeDir.normalize();
F32 dot = mDot(shapeDir, camDir);
if (dot < camFovCos)
continue;
// Test to see if it's behind something, and we want to
// ignore anything it's mounted on when we run the LOS.
RayInfo info;
shape->disableCollision();
SceneObject *mount = shape->getObjectMount();
if (mount)
mount->disableCollision();
bool los = !gClientContainer.castRay(camPos, shapePos,losMask, &info);
shape->enableCollision();
if (mount)
mount->enableCollision();
if (!los)
continue;
// Project the shape pos into screen space and calculate
// the distance opacity used to fade the labels into the
// distance.
Point3F projPnt;
shapePos.z += mVerticalOffset;
if (!parent->project(shapePos, &projPnt))
continue;
F32 opacity = (shapeDist < fadeDistance)? 1.0:
1.0 - (shapeDist - fadeDistance) / (visDistance - fadeDistance);
// Render the shape's name
drawName(Point2I((S32)projPnt.x, (S32)projPnt.y),shape->getShapeName(),opacity);
}
}
}
}
// This section renders all text added by afxGuiText effects.
for (S32 i = 0; i < text_items.size(); i++)
{
HudTextSpec* spec = &text_items[i];
if (spec->text && spec->text[0] != '\0')
{
VectorF shapeDir = spec->pos - camPos;
// do range test
F32 shapeDist = shapeDir.lenSquared();
if (shapeDist == 0 || shapeDist > visDistanceSqr)
continue;
shapeDist = mSqrt(shapeDist);
// Test to see if it's within our viewcone, this test doesn't
// actually match the viewport very well, should consider
// projection and box test.
shapeDir.normalize();
F32 dot = mDot(shapeDir, camDir);
if (dot < camFovCos)
continue;
// Test to see if it's behind something, and we want to
// ignore anything it's mounted on when we run the LOS.
RayInfo info;
if (spec->obj)
spec->obj->disableCollision();
bool los = !gClientContainer.castRay(camPos, spec->pos, losMask, &info);
if (spec->obj)
spec->obj->enableCollision();
if (!los)
continue;
// Project the shape pos into screen space.
Point3F projPnt;
if (!parent->project(spec->pos, &projPnt))
continue;
// Calculate the distance opacity used to fade text into the distance.
F32 opacity = (shapeDist < fadeDistance)? 1.0 : 1.0 - (shapeDist - fadeDistance) / (25.0f);
if (opacity > 0.01f)
drawName(Point2I((S32)projPnt.x, (S32)projPnt.y), spec->text, opacity, &spec->text_clr);
}
}
// Restore control object collision
if (!mEnableControlObjectOcclusion)
control->enableCollision();
// Border last
if (mShowFrame)
GFX->getDrawUtil()->drawRect(updateRect, mFrameColor.toColorI());
reset();
}