ch.aplu.robotsim

Class TouchSensor

java.lang.Object

Actor

ch.aplu.robotsim.Part

ch.aplu.robotsim.TouchSensor

public class TouchSensor
extends Part

Class that represents a touch sensor.

Constructor Summary

Constructors

Constructor and Description
TouchSensor(SensorPort port) Creates a sensor instance connected to the given port.

Method Summary

Modifier and Type	Method and Description
void	act() For internal use only (overrides Actor.act()).
void	addTouchListener(TouchListener listener) Register the given TouchListener to detect press or release events.
boolean	isPressed() Polls the touch sensor and returns true, if there is a collision with any of the collision obstacles.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TouchSensor

public TouchSensor(SensorPort port)

Creates a sensor instance connected to the given port. The port selection determines the position of the sensor: S1: right; S2: left, S3: middle, S4: rear-middle.

Parameters:

port - the port where the sensor is plugged-in

Method Detail

addTouchListener

public void addTouchListener(TouchListener listener)

Register the given TouchListener to detect press or release events. Starts an internal sensor thread that polls the sensor level and runs the sensor callbacks.

Parameters:

listener - the LightListener to register; null, to terminate any running sensor thread

act

public void act()

For internal use only (overrides Actor.act()).

isPressed

public boolean isPressed()

Polls the touch sensor and returns true, if there is a collision with any of the collision obstacles. Calls Thread.sleep(1) to prevent CPU overload in short polling loops.

Returns:

true, if the sensor is pressed; otherwise false