ConstSpeedMobility Class Reference [mobility - modules handling the mobility of the hosts]

Controls all movement related things of a host. More...

#include <ConstSpeedMobility.h>

Inherits BaseMobility.

Collaboration diagram for ConstSpeedMobility:

List of all members.

Public Member Functions
virtual void	initialize (int)
	Initializes mobility model parameters.
Protected Member Functions
virtual void	setTargetPosition ()
	Calculate the target position to move to.
virtual void	makeMove ()
	Move the host.
Protected Attributes
Coord	targetPos
Coord	stepTarget
parameters to handle the movement of the host
Coord	stepSize
	Size of a step.
int	numSteps
	Total number of steps.
int	step
	Number of steps already moved.

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Detailed Description

Controls all movement related things of a host.

Parameters to be specified in omnetpp.ini

• vHost : Speed of a host [m/s]
• updateInterval : Time interval to update the hosts position
• x, y, z : Starting position of the host, -1 = random

Author:

Steffen Sroka, Marc Loebbers, Daniel Willkomm

See also:

ConnectionManager

Definition at line 39 of file ConstSpeedMobility.h.

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Member Function Documentation

void ConstSpeedMobility::initialize

(

int

stage

)

[virtual]

Initializes mobility model parameters.

Reads the updateInterval and the velocity

If the host is not stationary it calculates a random position and schedules a timer to trigger the first movement

Reimplemented from BaseMobility.

Definition at line 35 of file ConstSpeedMobility.cc.

References Move::getSpeed(), Move::getStartPos(), Move::info(), BaseMobility::move, numSteps, Move::setSpeed(), step, and stepSize.

{
    BaseMobility::initialize(stage);

    if (stage == 0) {
        move.setSpeed(par("speed").doubleValue());

        if(move.getSpeed() <= 0)
          move.setSpeed(0);

    numSteps = 0;
    step = -1;
    stepSize = Coord(0,0,0);

    debugEV << "Initialize: move speed: " << move.getSpeed() << " (" << par("speed").doubleValue() << ")"
           << " pos: " << move.info() << endl;
    }
    else if( stage == 1 ){
      stepTarget = move.getStartPos();
    }
}

void ConstSpeedMobility::makeMove

(

)

[protected, virtual]

Move the host.

Move the host if the destination is not reached yet. Otherwise calculate a new random position

Reimplemented from BaseMobility.

Definition at line 97 of file ConstSpeedMobility.cc.

References Move::getStartPos(), Move::info(), Coord::info(), BaseMobility::move, numSteps, Move::setStart(), setTargetPosition(), step, and stepSize.

{
    // increment number of steps
    step++;

    if( step == numSteps ){
    // last step
    //stepSize.x =
    // step forward
    move.setStart(stepTarget, simTime());

    debugEV << "stepping forward. step #=" << step
       << " startPos: " << move.getStartPos().info() << endl;


    // get new target position
    debugEV << "destination reached.\n"
       << move.info() << endl;
    setTargetPosition();
    }
    else if( step < numSteps ){
    // step forward
    move.setStart(stepTarget, simTime());
    stepTarget += stepSize;

    debugEV << "stepping forward. step #=" << step
       << " startPos: " << move.getStartPos().info() << endl;

    }
    else{
  error("step cannot be bigger than numSteps");
    }

    //    fixIfHostGetsOutside();
}

void ConstSpeedMobility::setTargetPosition

(

)

[protected, virtual]

Calculate the target position to move to.

Calculate a new random position and the number of steps the host needs to reach this position

Definition at line 62 of file ConstSpeedMobility.cc.

References Coord::distance(), BaseMobility::getRandomPosition(), Move::getSpeed(), Move::getStartPos(), Coord::info(), Move::info(), BaseMobility::move, numSteps, FWMath::round(), Move::setDirectionByTarget(), step, stepSize, and BaseMobility::updateInterval.

Referenced by makeMove().

{
  debugEV << "start setTargetPosistion: " << move.info() << endl;

    do{
  targetPos = getRandomPosition();

  double distance = move.getStartPos().distance(targetPos);
  simtime_t totalTime = distance / move.getSpeed();
  numSteps = FWMath::round(totalTime / updateInterval);

  debugEV << "new targetPos: " << targetPos.info() << " distance=" << distance
     << " totalTime=" << totalTime << " numSteps=" << numSteps << endl;
    }
    while( numSteps == 0 );

    stepSize = targetPos - move.getStartPos();

    stepSize = stepSize / numSteps;

    stepTarget = move.getStartPos() + stepSize;

    debugEV << "stepSize: " << stepSize.info() << " target: " << (stepSize*numSteps).info() << endl;

    step = 0;
    move.setDirectionByTarget(targetPos);

    debugEV << "end setTargetPosistion: " << move.info() << endl;
}

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

• modules/mobility/ConstSpeedMobility.h
• modules/mobility/ConstSpeedMobility.cc