/*
 * Dog location Version 3
 */
#include <iostream.h>

class Dog {
public:
	short int x,y;
	
	// Constructor
	Dog(short int x0, short int y0);
		
	// Movement methods
	void Home(void);
	void MoveX(int amount);
	void MoveY(int amount);
	void Fence();
};

// Constructor
//
Dog::Dog(short int x0, short int y0)
{ 
	x = x0;  
	y = y0; 
	Fence();
}

/** Methods **/

// Send a Dog home (0,0)
void Dog::Home(void) 
{ 
	x = 0; 
	y = 0;
}

// Move a Dog in the X direction
void Dog::MoveX(int amount)
{
	x += amount;
	Fence();
}

// Move a Dog in the Y direction
void Dog::MoveY(int amount)
{
	y += amount;
	Fence();
}

// Contain the Dog within a 30 x 20 playground
//
void Dog::Fence(void) 
{
	if(x < 0) 
		x = 0;

	if(x > 29) 
		x = 29;

	if(y < 0) 
		y = 0;

	if(y > 19) 
		y = 19;
}

void main()
{
	Dog rover(5,6), spot(10,3);
	
	cout << "Rover is at (" << rover.x
		 << "," << rover.y << ")" << endl;
	cout << "Spot is at (" << spot.x
		 << "," << spot.y << ")" << endl;
		 
	rover.MoveX(1);
	cout << "Rover is at (" << rover.x
		 << "," << rover.y << ")" << endl;
		 
	spot.MoveY(-9);
	cout << "Spot is at (" << spot.x
		 << "," << spot.y << ")" << endl;
		 
	spot.Home();
	cout << "Spot is at (" << spot.x
		 << "," << spot.y << ")" << endl;
}