For context, I'm trying to recreate a basic sort of text based adventure game I made in high school in C++. Essentially the code creates different "rooms" as objects and links them together. I'm having an issue in C++ with the function which links two rooms together in a certain direction, "link()". Error: "undefined reference to `Rooms::east'". The "visit()" function can then be used to change between linked rooms. How can I change my C++ code in order to fix the issue and still work in a similar fashion to my Java code?
Additionally, my university is requiring us to use a library which works with one of their simulators(FEHLCD.h), but I do not believe this is what is causing the issue.
Java code:
import java.util.*;
public class Room
{
private Room left;
private Room right;
private Room forwards;
private Room backwards;
private String description;
private boolean hasMagicSkeletonKey=false;
private static boolean characterHasMagicSkeletonKey=false;
final static int LEFT=0;
final static int RIGHT=1;
final static int FORWARDS=2;
final static int BACKWARDS=3;
public Room(String description)
{
this.description=description;
}
public void link(Room room,int direction)
{
if(direction==LEFT)left=room;
else if(direction==RIGHT)right=room; //This is the part of the code in the java version I am currently trying to replicate.
else if(direction==FORWARDS)forwards=room;
else if(direction==BACKWARDS)backwards=room;
else
{
throw new IllegalArgumentException("You run straight into a wall, and the pain of the impact makes you question why you did it.\n");
}
}
public void visit()
{
System.out.println(description);
if(left==null && right==null && forwards==null && backwards==null)
{
if(characterHasMagicSkeletonKey)
{
System.out.println("You walk up to the locked door and put the key in the lock. The room is dark, but you faintly make out the shape of a desk with a book sitting on it. The title of the book, from what you can make out, is:\"How to pass PS&E with an A: A comprehnsive guide for Juniors.\" You excitedly sit down and try to read it, but due to it being 50,000 pages long, you figure that you'll be there for a while.");
return;
}
else
{
System.out.println("You knock on the door, but there isn't an answer. You then try to jiggle the door handle, but the door doesn't budge because it's locked. You keel over from a mixture of exhaustion, laziness, and the fact that you no longer feel like continuing with school. Game Over.");
return;
}
}
if(hasMagicSkeletonKey)
{
System.out.println("On the table near the back of the room you see a skelton key. It is glowing red and continuously making a loud, puslating noise.\n");
}
if(left!=null)
{
System.out.println("There is a door to your left.");
}
if(right!=null)
{
System.out.println("There is a door to your right.");
}
if(forwards!=null)
{
System.out.println("There is a door in front of you.");
}
if(backwards!=null)
{
System.out.println("There is a door behind you");
}
System.out.println("\n\n");
System.out.print("What do you want to do? ");
Scanner scan=new Scanner(System.in);
String prompt=scan.nextLine();
prompt=prompt.toLowerCase().trim();
if(prompt.contains("left") && left!=null)
{
left.visit();
return;
}
else if(prompt.contains("right") && right!=null)
{
right.visit();
return;
}
else if(prompt.contains("forward") && forwards!=null)
{
forwards.visit();
return;
}
else if(prompt.contains("backward") && backwards!=null)
{
backwards.visit();
return;
}
else if(prompt.contains("grab") && hasMagicSkeletonKey)
{
System.out.println("The key suddenly stopped making noise, and it's strangely calming to hold.\n");
hasMagicSkeletonKey=false;
characterHasMagicSkeletonKey=true;
this.visit();
return;
}
else if(prompt.contains("inventory"))
{
if(characterHasMagicSkeletonKey)
{
System.out.println("You have a red glowing, noisy skeleton key.\n");
}
else
{
System.out.println("You don't have anything.\n");
}
this.visit();
return;
}
else
{
this.visit();
return;
}
}
public void placeMagicSkeletonKey()
{
hasMagicSkeletonKey=true;
}
}
C++ rooms.h:
#ifndef ROOM_H
#define ROOM_H
#include "FEHLCD.h"
using namespace std;
class Rooms;
class Rooms {
private:
char chardescription[256];
static bool eastcheck, westcheck, northcheck, southcheck;
public:
static Rooms east, west, north, south;
Rooms();
Rooms(char*); //constructors
void printData(void);
static void link(Rooms, int);
void visit();
static const int WEST = 0, EAST = 1, NORTH = 2, SOUTH = 3;
};
#endif
C++ rooms.cpp:
#include "rooms.h"
#include "FEHLCD.h"
#include "string.h"
using namespace std;
bool Rooms::eastcheck = false;
bool Rooms::westcheck = false;
bool Rooms::northcheck = false;
bool Rooms::southcheck = false;
Rooms::Rooms() {
char placeholder[] = "unknown";
strcpy(chardescription, placeholder);
}
Rooms::Rooms(char* desc) {
strcpy(chardescription, desc);
}
void Rooms::printData(void) {
LCD.WriteLine(chardescription);
}
//links two rooms together by direction
void Rooms::link(Rooms room, int direction) {
/*if(direction==WEST){
west=room;
westcheck=true;
}*/
if (direction == EAST) {
east = room; //this is where I get the error
eastcheck = true;
LCD.WriteLine("Linked");
}
/*else if(direction==NORTH){
north=room;
northcheck=true;
}
else if(direction==SOUTH){
south=room;
northcheck=
}*/
}
//changes the active room
void Rooms::visit(void) {
LCD.Clear();
LCD.WriteLine(chardescription);
if (eastcheck == true) {
LCD.WriteLine("There is a door to your east.");
}
LCD.WriteLine("What do you want to do?");
//code incomplete
//this is where the user would be prompted with options about which room to move to next
}
