gCycleExtrapolator Class Reference

#include <gCycle.h>

Inheritance diagram for gCycleExtrapolator:

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List of all members.

Public Member Functions
void	CopyFrom (const gCycleMovement &other)
	copies relevant info from other cylce
void	CopyFrom (const SyncData &sync, const gCycle &other)
	gCycleExtrapolator (eGrid *grid, const eCoord &pos, const eCoord &dir, ePlayerNetID *p=NULL, bool autodelete=1)
virtual	~gCycleExtrapolator ()
virtual bool	EdgeIsDangerous (const eWall *w, REAL time, REAL a) const
	returns whether a given wall is dangerous to this cycle
virtual void	PassEdge (const eWall *w, REAL time, REAL a, int recursion=1)
virtual bool	TimestepCore (REAL currentTime, bool calculateAcceleration=true)
	core physics simulation routine
Public Attributes
REAL	trueDistance_
Private Member Functions
virtual nDescriptor &	CreatorDescriptor () const
Private Attributes
const gCycleMovement *	parent_

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Detailed Description

Definition at line 87 of file gCycle.h.

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Constructor & Destructor Documentation

gCycleExtrapolator::gCycleExtrapolator	(	eGrid *	grid,
		const eCoord &	pos,
		const eCoord &	dir,
		ePlayerNetID *	p = NULL,
		bool	autodelete = 1
	)

Definition at line 1756 of file gCycle.cpp.

References eGameObject::currentFace, eGrid::FindSurroundingFace(), and eGameObject::RemoveFromList().

        :gCycleMovement( grid, pos, dir, p, autodelete )
        ,trueDistance_( 0 )
        ,parent_( 0 )
{
    // an extrapolator should not be visible as a gameobject from the outside
    eFace * currentFaceBack = currentFace;
    RemoveFromList();
    currentFace = currentFaceBack;
    if ( !currentFace )
        currentFace = grid->FindSurroundingFace( pos, currentFace );
}

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gCycleExtrapolator::~gCycleExtrapolator

(

)

[virtual]

Definition at line 1770 of file gCycle.cpp.

{
}

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Member Function Documentation

void gCycleExtrapolator::CopyFrom

(

const gCycleMovement &

other

)

copies relevant info from other cylce

Parameters:

other

the cycle to copy everything from

Reimplemented from gCycleMovement.

Definition at line 1714 of file gCycle.cpp.

References gCycleMovement::CopyFrom(), gCycleMovement::GetDistance(), parent_, and trueDistance_.

Referenced by gCycleMovement::CopyFrom().

{
    // delegate
    gCycleMovement::CopyFrom( other );

    // set parent
    parent_ = &other;

    // copy distance
    trueDistance_ = GetDistance();
}

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void gCycleExtrapolator::CopyFrom	(	const SyncData &	sync,
		const gCycle &	other
	)

Definition at line 1727 of file gCycle.cpp.

References gCycleMovement::CopyFrom(), eGameObject::currentFace, gCycleMovement::GetDistance(), gCycle::lastGoodPosition_, gCycleMovement::SyncData::lastTurn, gCycleMovement::lastTurnPos_, gCycleMovement::MoveSafely(), parent_, gCycleMovement::SyncData::pos, gCycleMovement::SyncData::time, and trueDistance_.

{
    // delegate
    gCycleMovement::CopyFrom( sync, other );

    //eFace* face1 = currentFace;
    MoveSafely( other.lastGoodPosition_, sync.time, sync.time );
    //eFace* face2 = currentFace;
    MoveSafely( sync.pos, sync.time, sync.time );

#ifdef DEBUG_X
    if ( face1 != face2 || face1 != currentFace )
    {
        currentFace = face1;
        MoveSafely( sync.lastTurn *.01 + sync.pos * .99, sync.time, sync.time );
        MoveSafely( sync.pos, sync.time, sync.time );
    }
#endif

    // set parent
    parent_ = &other;

    // set last turn
    lastTurnPos_ = sync.lastTurn;

    // copy distance
    trueDistance_ = GetDistance();
}

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bool gCycleExtrapolator::EdgeIsDangerous	(	const eWall *	wall,
		REAL	time,
		REAL	alpha
	)			const [virtual]

returns whether a given wall is dangerous to this cycle

Parameters:

	wall	the wall to check for danger
	time	the time of the possible collision
	alpha	the local wall coordinate of the collision

Returns:

true if the wall is dangerous

Reimplemented from gCycleMovement.

Definition at line 1798 of file gCycle.cpp.

References gPlayerWall::Cycle(), gCycleMovement::dirDrive, gCycleMovement::EdgeIsDangerous(), EPS, gCycleMovement::GetDistance(), gCycleMovement::GetTurnDelay(), gPlayerWall::NetWall(), parent_, gPlayerWall::Pos(), gNetPlayerWall::Preliminary(), REAL, sg_delayCycle, gCycleMovement::Speed(), gCycleMovement::SpeedMultiplier(), gPlayerWall::Time(), and eWall::Vec().

Referenced by PassEdge().

{
    const gPlayerWall *w = dynamic_cast<const gPlayerWall*>(ww);
    if (w)
    {
        gNetPlayerWall* nw = w->NetWall();

        // get time the wall was built
        REAL builtTime = w->Time(alpha);

        // is the wall built in the future ( happens during extrapolation )
        if ( builtTime > time )
            return false;

        // ignore temporary walls in some cases, they may not be real
        if ( nw && nw->Preliminary() && w->Cycle() == parent_ && fabs( dirDrive * w->Vec() ) < EPS )
            return false;

        // ignore recent walls of parent cycle
        gCycle *otherPlayer=w->Cycle();
        if (otherPlayer==parent_ &&
                ( time < builtTime + 2 * GetTurnDelay() || GetDistance() < w->Pos( alpha ) + .01 * sg_delayCycle*Speed()/SpeedMultiplier()  )
           )
            return false;
    }

    // delegate
    return bool(parent_) && parent_->EdgeIsDangerous( ww, time, alpha ) && gCycleMovement::EdgeIsDangerous( ww, time, alpha );
}

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void gCycleExtrapolator::PassEdge	(	const eWall *	w,
		REAL	time,
		REAL	a,
		int	recursion = 1
	)			[virtual]

Reimplemented from eGameObject.

Definition at line 1828 of file gCycle.cpp.

References gCycleMovement::Alive(), eCoord, EdgeIsDangerous(), and eWall::Point().

                                                                     {
    {
        if (!EdgeIsDangerous(ww,time,a) || !Alive() )
        {
            return;
        }
        else
        {
            eCoord collPos = ww->Point( a );
            throw gCycleDeath( collPos );
        }
    }
}

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bool gCycleExtrapolator::TimestepCore	(	REAL	currentTime,
		bool	calculateAcceleration = true
	)			[virtual]

core physics simulation routine

Parameters:

currentTime

time to simulate up to

Returns:

true if the cycle is to be killed

Reimplemented from gCycleMovement.

Definition at line 1842 of file gCycle.cpp.

References gCycleMovement::distance, gCycleMovement::GetCurrentDestination(), parent_, tASSERT, gCycleMovement::TimestepCore(), and trueDistance_.

{
    // determine a suitable next destination
    gDestination destDefault( *parent_ ), *dest=&destDefault;
    if ( GetCurrentDestination() )
    {
        dest = GetCurrentDestination();
    }

    // correct distance
    // distance = dest->distance - DistanceToDestination( *dest );
    // REAL distanceBefore = GetDistance();
    tASSERT(finite(distance));

    // delegate
    bool ret = false;
    try{
        ret = gCycleMovement::TimestepCore( currentTime, calculateAcceleration );
    }
    catch( gCycleDeath & )
    {
        return false;
    }

    // update true distance
    // trueDistance_ += GetDistance() - distanceBefore;
    trueDistance_ = distance;

    return ret;
}

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nDescriptor & gCycleExtrapolator::CreatorDescriptor

(

void

)

const [private, virtual]

Implements nNetObject.

Definition at line 1881 of file gCycle.cpp.

References cycle_init, and tASSERT.

                                                        {
    // should never be called
    tASSERT( 0 );
    return cycle_init;
}

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Member Data Documentation

REAL gCycleExtrapolator::trueDistance_

Definition at line 107 of file gCycle.h.

Referenced by CopyFrom(), and TimestepCore().

const gCycleMovement* gCycleExtrapolator::parent_ [private]

Definition at line 113 of file gCycle.h.

Referenced by CopyFrom(), EdgeIsDangerous(), and TimestepCore().

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The documentation for this class was generated from the following files:

• src/tron/gCycle.h
• src/tron/gCycle.cpp

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