person.java

package buildingpb;

import java.awt.Point;
import java.util.ArrayList;

/**
 * @author shsmchlr
 * This is for people moving in building
 */
public class Person {
    private Point xy;                   // person's position
    private ArrayList<Point> path;      // path it follows .. a series of xy points moves between
    private boolean stopped;            // is it moving

    /**
     * create person at the given xy position
     * @param xys   position
     */
    Person(Point xys) {
        xy = xys;
        path = new ArrayList<Point>();          // create empty path
        stopped = true;                         // by default not moving
    }

    /**
     * get the person's position
     * @return  the position
     */
    public Point getXY() {
        return xy;
    }
    /**
     * get x coordinate of person
     * @return x
     */
    public int getX() {
        return (int) xy.getX();
    }
    /**
     * get y coordinate of person
     * @return y
     */
    public int getY() {
        return (int) xy.getY();
    }
    /**
     * set the person's position
     * @param pxy   new position
     */
    public void setXY(Point pxy) {
        xy = pxy;
    }
    /**
     * set person as being stopped or not
     * @param isStopped
     */
    public void setStopped(boolean isStopped) {
        stopped = isStopped;
    }
    /**
     * Is person stopped
     * @return if so
     */
    public boolean getStopped() {
        return stopped;
    }
    /**
     * show person in the given building interface
     * @param bi
     */
    public void showPerson(BuildingGUI bi) {
        bi.showItem((int) xy.getX(), (int) xy.getY(), 4, 'r');
    }

    public void showPerson2(BuildingGUI bi) {
        bi.showItem((int) xy.getX(), (int) xy.getY(), 4, 'b');
    }

    public void showPerson3(BuildingGUI bi) {
        bi.showItem((int) xy.getX(), (int) xy.getY(), 4, 'b');
    }

    public void showPerson4(BuildingGUI bi) {
        bi.showItem((int) xy.getX(), (int) xy.getY(), 4, 'b');
    }

    public void showPerson5(BuildingGUI bi) {
        bi.showItem((int) xy.getX(), (int) xy.getY(), 4, 'b');
    }

    public void showPerson6(BuildingGUI bi) {
        bi.showItem((int) xy.getX(), (int) xy.getY(), 4, 'b');
    }



    /**
     * return info about person as string
     * @return  the string
     */
    public String toString() {
        return "Person at " + (int) xy.getX() + ", " + (int) xy.getY();
    }
    /**
     * clear the path the person has to follow
     */
    public void clearPath() {
        path.clear();
    }
    /**
     * add new xy to path
     * @param xyp   new position
     */
    public void setPath (Point xyp) {
        path.add(xyp);
    }
    /**
     * is person at the specified position?
     * @param pathXY
     * @return
     */
    private boolean equalXY(Point pathXY) {
        return ( (int)pathXY.getX() == (int) xy.getX() ) && ( (int)pathXY.getY() == (int) xy.getY() );
    }
    /**
     * move one step towards the given position
     * @param pathXY
     */
    private void moveTowards (Point pathXY) {
        int dx = 0;         // amount by which it will move in x .. and y, set to -1, 0 or 1
        int dy = 0;
        if (xy.getX() < pathXY.getX()) dx = 1; else if (xy.getX() > pathXY.getX()) dx = -1;
        if (xy.getY() < pathXY.getY()) dy = 1; else if (xy.getY() > pathXY.getY()) dy = -1;

        xy.translate(dx, dy);   // now move
    }
    /**
     * attempt to move person unless it is stopped
     */
    public void update() {
        if (stopped) {}                         // do nowt
        else if (equalXY(path.get(0)) ){        // if at next point on path
            stopped = true;                     // as one point in this version, say stopped
        }
        else moveTowards(path.get(0));          // move closer to next destination
    }



}