import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
import java.util.Scanner;
import java.io.FileReader;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.lang.Integer;
import java.io.FileInputStream;
import java.io.File;

public class MyWorld extends World
{
    private ArrayList<String> lines = new ArrayList<String>();
    public static String currentLevel = ("levelOne.txt");
    private HashMap<String, Actor> objectKey;
    /**
     * Constructor for objects of class MyWorld. 
     */
    public MyWorld()
    {    
        // Create a new world with 600x400 cells with a cell size of 1x1 pixels.
        super(600, 400, 1); 
        objectKey = new HashMap<String, Actor>();
        setPaintOrder(Instructions.class,Color.class,yellowObstacle.class,blackObstacle.class,redObstacle.class,Water.class,Trampoline.class,Water.class,floatingPlatform.class,Ground.class,Player.class,Blank.class);
        initMap();
        readMap();
        act();        
    }    

    /**
     * Create each level as the player completes the previous one.
     */
    public void act()
    {
        if(Player.isLevelTwo == true)
        {
            currentLevel = ("levelTwo.txt");
            removeFromLevel();
            initMap();
            readMap();
        }
    }

    /**
     * initMap - initializes map
     */
    public void initMap()
    {
        try
        {
            Scanner levelScanner = new Scanner(new File(currentLevel));
            try
            {
                int y = 0;
                while(levelScanner.hasNextLine())
                {                 
                    String line = levelScanner.nextLine();
                    if(line.length() == 0)
                    {
                        lines.add(line);      
                    }
                    else
                    {
                        int x = 0;  
                        for(char nextChar:line.toCharArray())
                        {
                            String coordKey = (x + ";" + y);                              
                            if(nextChar == ('p'))
                            {
                                objectKey.put(coordKey, new Player());
                                x+=37;
                            }
                            else if(nextChar == ('x'))
                            {
                                objectKey.put(coordKey, new Ground());
                                x+=37;
                            }
                            else if(nextChar == ('y'))
                            {
                                objectKey.put(coordKey, new floatingPlatform());
                                x+=50;
                            }
                            else if(nextChar == ('w'))
                            {
                                objectKey.put(coordKey, new Water());
                                x+=37;
                            }
                            else if(nextChar == ('i'))
                            {
                                objectKey.put(coordKey, new Color());
                                x+=38;
                            }
                            else if(nextChar == ('z'))
                            {
                                objectKey.put(coordKey, new blackObstacle());
                                x+=37;
                            }
                            else if(nextChar == ('r'))
                            {
                                objectKey.put(coordKey, new redObstacle());
                                x+=10;
                            }
                            else if(nextChar == ('m'))
                            {
                                objectKey.put(coordKey, new yellowObstacle());
                                x+=37;
                            }
                            else if(nextChar == ('t'))
                            {
                                objectKey.put(coordKey, new Trampoline());
                                x+=37;
                            }    
                            else if(nextChar==('b'))
                            {
                                objectKey.put(coordKey, new Blank());
                                x+=37;
                            }
                        }
                    }
                    y += 37;
                }                
            }
            catch(Exception e)
            {
                System.out.println(e);
            }
        }
        catch(Exception e)
        {
            System.out.println("Scenario file missing");
            return;
        }        
        //System.out.println("test");
    }

    /**
     * Sets the current level.
     */
    public void setCurrentLevel(String currentLevel)
    {
        this.currentLevel = currentLevel;
    }

    /**
     * Places each object in the coordinates according to its placement in the text file.
     */
    public void readMap()
    {
        for(String key:objectKey.keySet())
        {
            int splitIndex = key.indexOf(";"); 
            int yValue = Integer.parseInt(key.substring(splitIndex+1));
            int xValue = Integer.parseInt(key.substring(0, splitIndex));
            this.addObject(objectKey.get(key), xValue, yValue);
        }
    }
    
    /**
     * Removes objects from level.
     */
    public void removeFromLevel()
    {
        for(String key:objectKey.keySet())
        {
            this.removeObject(objectKey.get(key));
        }
        objectKey.clear();
    }
}