ConstSpeedMobility Class Reference

#include <ConstSpeedMobility.h>

Inheritance diagram for ConstSpeedMobility:

List of all members.

---

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 : Starting position of the host, -1 = random

Author:

Steffen Sroka, Marc Loebbers, Daniel Willkomm

See also:

ChannelControl

Protected Member Functions
virtual void	initialize (int)
	Initializes mobility model parameters.
virtual void	handleSelfMsg (cMessage *msg)
	Called upon arrival of a self messages.
virtual void	setTargetPosition ()
	Calculate the target position to move to.
void	move ()
	Move the host.
Protected Attributes
double	vHost
	Velocity of the host.
double	updateInterval
	Time interval to update the hosts position.
bool	stationary
	If true, the host doesn't move.
Coord	targetPos
	parameters to handle the movement of the host
Coord	stepSize
int	numSteps
int	step

---

Member Function Documentation

void ConstSpeedMobility::handleSelfMsg (  cMessage *  msg  )  [protected, virtual]

Called upon arrival of a self messages. The only self message possible is to indicate a new movement. If host is stationary this function is never called. Reimplemented from BasicMobility. { move(); updatePosition(); scheduleAt(simTime() + updateInterval, msg); }

void ConstSpeedMobility::initialize (  int  stage  )  [protected, 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 BasicMobility. { BasicMobility::initialize(stage); EV << "initializing ConstSpeedMobility stage " << stage << endl; if (stage == 0) { updateInterval = par("updateInterval"); vHost = par("vHost"); // if the initial speed is lower than 0, the node is stationary stationary = (vHost <= 0); //calculate the target position of the host if the host moves if (!stationary) { setTargetPosition(); //host moves the first time after some random delay to avoid synchronized movements scheduleAt(simTime() + uniform(0, updateInterval), new cMessage("move")); } } }

void ConstSpeedMobility::move (   )  [protected]

Move the host. Move the host if the destination is not reached yet. Otherwise calculate a new random position { step++; if (step <= numSteps) { EV << "stepping forward. step #=" << step << " xpos= " << pos.x << " ypos=" << pos. y << endl; pos += stepSize; } else { EV << "destination reached.\n xpos= " << pos.x << " ypos=" << pos.y << endl; setTargetPosition(); } }

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 { targetPos = getRandomPosition(); double distance = pos.distance(targetPos); double totalTime = distance / vHost; numSteps = FWMath::round(totalTime / updateInterval); stepSize = (targetPos - pos) / numSteps; step = 0; EV << "distance=" << distance << " xpos= " << targetPos.x << " ypos=" << targetPos.y << "totalTime=" << totalTime << " numSteps=" << numSteps << " vHost=" << vHost << endl; }

---

Member Data Documentation

int ConstSpeedMobility::numSteps [protected]

bool ConstSpeedMobility::stationary [protected]

If true, the host doesn't move.

int ConstSpeedMobility::step [protected]

Coord ConstSpeedMobility::stepSize [protected]

Coord ConstSpeedMobility::targetPos [protected]

parameters to handle the movement of the host

double ConstSpeedMobility::updateInterval [protected]

Time interval to update the hosts position.

double ConstSpeedMobility::vHost [protected]

Velocity of the host.

---

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

• ConstSpeedMobility.h
• ConstSpeedMobility.cc

---