Room.java

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

public class Room 
{
	private String roomID;
	private String roomFloorID;
	private String roomName;
	private String roomDescr;
	private boolean visited;
	private boolean isCheckpoint = false; // default false

	private Map<String, String> exits;
	private Puzzle puzzle;
	private ArrayList<Item> roomInventory; 
	private ArrayList<Character> characterList;
	private ArrayList<Character> characterInRoom;
	private Character eliteMercenary;
	private boolean locked = false;
	private String requiredKeyID = null;

	public Room(String roomID, String roomFloorID, String roomName, String roomDescr) 
	{
		this.roomID = roomID;
		this.roomFloorID = roomFloorID;
		this.roomName = roomName;
		this.roomDescr = roomDescr;
		this.visited = false;
		this.exits = new HashMap<>();
		roomInventory = new ArrayList<>();
		characterList =new ArrayList<>();
		characterInRoom = new ArrayList<>();

		if (roomID.equals("R17") || roomID.equals("R18")) 
		{
			setLocked(true);
			setRequiredKey("A-08");
		}

		if (roomID.equals("R32")) 
		{
			setLocked(true);
			setRequiredKey("A-09");
		}

	}

	public String getRoomID() 
	{ 
		return roomID; 
	}

	public String getRoomFloorID() 
	{ 
		return roomFloorID; 
	}

	public String getRoomName() 
	{ 
		return roomName; 
	}

	public String getRoomDescr() 
	{ 
		return roomDescr; 
	}

	public ArrayList<Character> getCharacterList() 
	{
		return characterList;
	}

	public boolean isLocked() 
	{
		return locked;
	}

	public void setLocked(boolean locked) 
	{
		this.locked = locked;
	}

	public void setRequiredKey(String keyID) 
	{
		this.requiredKeyID = keyID;
	}

	public String getRequiredKey() 
	{
		return requiredKeyID;
	}

	public boolean unlockRoom(Player player) 
	{
		if (requiredKeyID == null) 
		{
			locked = false;
			return true;
		}

		if (player.hasItem(requiredKeyID)) 
		{
			locked = false;
			 String keyName = requiredKeyID; // fallback to ID if not found
		        for (Item item : player.getInventory()) 
		        {
		            if (item.getItemID().equals(requiredKeyID)) 
		            {
		                keyName = item.getItemName();
		                break;
		            }
		        }

			System.out.println(keyName + " used to unlock door.");
			return true;
		}

		return false; 
	}

	public boolean isVisited() 
	{ 
		return visited; 
	}

	public void setVisited(boolean visited) 
	{ 
		this.visited = visited; 
	}  

	public void setCharacter(Character character) 
	{
		characterList.add(character);
	}

	public void setCheckpoint(boolean checkpoint) 
	{
		this.isCheckpoint = checkpoint;
	}

	public boolean isCheckpoint() 
	{
		return isCheckpoint;
	}

	public void trackVisit() 
	{
		if (!visited) 
		{
			visited = true;
		} 
		else 
		{
			System.out.println("You have visited this room.\n");
		}

		if (puzzle != null && puzzle.isSolved()) 
		{
			puzzle.resetPuzzle();
		}

		System.out.println("Puzzle is solved in this room.\n");
	}

	public void addExit(String direction, String targetRoomID) 
	{
		if (targetRoomID != null && !targetRoomID.isEmpty() && !targetRoomID.equals("-1")) 
		{
			exits.put(direction.toLowerCase(), targetRoomID);
		}
	}

	public String getExit(String direction) 
	{
		return exits.get(direction.toLowerCase());
	}

	public Map<String, String> getExits() 
	{
		return exits;
	}

	public void setExits(Map<String, String> exits) 
	{
		if (exits != null)
			this.exits.putAll(exits);
	}

	public ArrayList<Item> getItems() 
	{
		return roomInventory;
	}

	public void addItem(Item item) 
	{
		if (item != null) roomInventory.add(item);
	}

	public boolean removeItem(Item item) 
	{
		return roomInventory.remove(item);
	}

	public Puzzle getPuzzle() 
	{
		return puzzle;
	}

	public void setPuzzle(Puzzle puzzle) 
	{
		this.puzzle = puzzle;
	}

	public boolean hasPuzzle() 
	{
		return puzzle != null && !puzzle.isSolved();
	}

	public void resetPuzzle()
	{
		if (puzzle != null)
		{
			puzzle.resetPuzzle();
		}
	}

	public boolean hasAlert()
	{
		return false;
	}

	public void checkAlert(Player player)
	{
		if(player.getDetectionLvl() >= 3)
		{
			if(eliteMercenary != null && !characterInRoom.contains(eliteMercenary))
			{
				System.out.println(((NPC)eliteMercenary).getAlt());
				characterInRoom.add(eliteMercenary);
				System.out.println("Alert triggered!" + eliteMercenary.getName() 
				+ "has appeared!\n");
			}
		}
	}

	public void setEliteMercenary(Character eliteMerc)
	{
		this.eliteMercenary = eliteMerc;
	}
}