spaceObject.h

/**
clock.h
SpaceObject class definition.
cs162-02, Assignment 2.1

@author: Eros
@version: 1.0
*/

#ifndef SPACE_OBJECT_H
#define SPACE_OBJECT_H
/*
Following are the definitions for Point, SpaceObjType,
and SpaceObject, which you should put in
spaceObject.h.Details about each of the
SpaceObject functions are provided below the
class definition.
*/
const int SCREEN_WIDTH =  400;
const int SCREEN_HEIGHT =  400;

struct Point {
    double x;
    double y;
};

enum SpaceObjType { SHIP, ASTEROID, PHOTON_TORPEDO };


class SpaceObject {

public:
    /**
    SpaceObject constructor

    initialize all member variables
    type should be set to ASTEROID
    radius should be set to 20.
    Other member variables should be given some reasonable values.

    */
    SpaceObject();
    /**
    Sets SpaceObject that accepts parameters to given values. Initialize all member
    variables to the given
    values.  If values are invalid, use reasonable default values.

    @param SpaceObjType type;     //type of object
    @param Point location;    //current location (x,y)
    @param Point velocity;    //current velocity (in pixels/frame)
    @param double angleDeg;   //angle object is facing (in degrees)
    @param double radius;  //gross radius of object (for collision detection)


    @return true if successful(all given values were valid, clock was set).
    False otherwise.
    */
    SpaceObject(SpaceObjType type, double radius,
        Point location, Point velocity, double angle) {

        setRadius(radius);
        setLocation(location.x, location.y);
        setVelocity(velocity.x, velocity.y);
        setAngle(angle);

    }
    //=============================================
    //mutators
    /**
    Validate values given and use them to set associated member variables.
setRadius(r) - if given value is negative or > ½ screen height, ignore it.
setLocation(x,y) - if given values are outside screen range (defined by constants),
adjust them if necessary to remain in bounds by adding/subtracting screen size values
from them. These “corrections” make the object reappear back on the opposite side of
the window if it goes off the edge.
    */
    void setRadius(int radius);
    void setLocation(double x, double y);
    void setVelocity(double velocityX, double velocityY);
    void setAngle(double angDeg);

    //change angle by given amount.
    void changeAngle(double deltaDeg);

    //============================================
    //accessors
    double getRadius();
    Point getLocation();
    Point getVelocity();
    double getAngle();

    //============================================
    //others
    void updatePosition();

private:
    SpaceObjType type;    //type of object
    Point location;   //current location (x,y)
    Point velocity;   //current velocity (in pixels/frame)
    double angleDeg;      //angle object is facing (in degrees)
    double radius;        //gross radius of object (for collision detection)
};

#endif