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Thread: Robot help.

  1. #1
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    Default Robot help.

    Hi!
    I'm new to this programming stuff and I'm currently struggling.
    I was given a project to construct a Robot with a fully charged battery and to make it move with certain buttons.

    I was given an incomplete code by my teacher, but I don't really understand what I'm doing.

    public class Robot {
     
      /**
       * Constructs a robot with a fully charged battery.
       * The initial heading is zero degrees (north).
       * @param x initial x coordinate, in meters.
       * @param y initial y coordinate, in meters.
       */
      public Robot(double x, double y) {
     
      }
     
      /**
       * Gets the x-coordinate of this robot.
       * @return the x-coordinate, in meters.
       */
      public double getX() {
        return 0.0; // TODO
      }
     
      /**
       * Gets the y-coordinate of this robot.
       * @return the y-coordinate, in meters.
       */
      public double getY() {
        return 0.0; // TODO
      }
     
      /**
       * Gets the heading of this robot. The heading is greater than or
       * equal to 0 degrees (north) and less than 360 degrees.
       * @return the heading, in degrees.
       */
      public double getHeading() {
        return 0.0; // TODO
      }
     
      /**
       * Gets the battery capacity for this robot.
       * @return the battery capacity, in watts.
       */
      public double getBatteryCapacity() {
        if (BCW <1.0)
    	return 0.5;
        else
    	return 0;
      }
     
      /**
       * Returns the current battery power for this robot.
       * @return current battery power, in watts.
       */
      public double readBatteryMeter() {
        return 0.0; // TODO
      }
     
      /**
       * Returns the distance between this robot's initial and current locations.
       * Because this robot may have turned, this distance may be less than the 
       * total number of meters traveled. For example, if the robot has returned
       * to it's initial location, this distance is zero.
       * @return the distance, in meters.
       */
      public double distance() {
        return 0.0; // TODO
      }
     
      /**
       * Turns this robot 90 degrees to the right (clockwise).
       * Power required to turn 90 degrees is the same as that required to go 
       * one meter. If insufficient power is available to complete the turn,
       * the robot consumes all remaining power but does not turn at all.
       */
      public void turnRight() {
        // TODO
      }
     
      /**
       * Turns this robot 90 degrees to the left (counter-clockwise).
       * Power required to turn 90 degrees is the same as that required to go 
       * one meter. If insufficient power is available to complete the turn,
       * the robot consumes all remaining power but does not turn at all.
       */
      public void turnLeft() {
        // TODO
      }
     
      /**
       * Recharges the battery for this robot for the specified amount of time.
       * Recharging has no effect after the battery's capacity is reached.
       * In other words, battery power must never exceed battery capacity.
       * @param seconds recharging time, in seconds.
       */
      public void recharge(double seconds) {
        wattsAvailable += BCW;
      }
     
      /**
       * Trys to make this robot go forward the specified distance. 
       * The robot goes only as far as possible with available battery power.
       * @param distance the distance to go, in meters.
       * @return the distance actually gone.
       */
      public double goForward(double distance) {
        return 0.0; // TODO
      }
     
      ///////////////////////////////////////////////////////////////////////////
      // Private fields declared here describe completely the state of this robot.
      // TODO: add private fields (neither static nor final).
     
      // Static fields are shared by all robots of this class of robots.
      // These fields are private, because they are accessed only by methods 
      // within this class. They are also final, because they are constants.
      // That is, they cannot be modified after they have been initialized.
      private static final double MPW = 10.0; // meters of go per watt
      private static final double SPW = 2.0; // seconds of charge per watt
      private static final double BCW = 1.0; // battery capacity, in watts
    }

    Mainly just constructing the robot is my problem because I tried some stuff but they kept coming back with an error or something.


  2. #2
    Junior Member
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    Default Re: Robot help.

    Hi!
    So, I've been working on it and I think I did somethings right...
    But now my question, main concern is:

    How do I get the robot to turn/move?

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