import java.util.*;
/**
 *  This class is the main class of the "World of Zuul" application. 
 *  "World of Zuul" is a very simple, text based adventure game.  Users 
 *  can walk around some scenery. That's all. It should really be extended 
 *  to make it more interesting!
 * 
 *  To play this game, create an instance of this class and call the "play"
 *  method.
 * 
 *  This main class creates and initialises all the others: it creates all
 *  rooms, creates the parser and starts the game.  It also evaluates and
 *  executes the commands that the parser returns.
 * 
 * @author  Michael Kölling and David J. Barnes
 * @version 2016.02.29
 */

public class Game 
{
    private Parser parser;
    private Room currentRoom;
    private Player player;
    private Thing currentThing;
    private int count = 0;   
    /**
     * Create the game and initialise its internal map.
     */
    public Game() 
    {
        createRooms();
        parser = new Parser();
        player = new Player();
       
    }

    /**
     * Create all the rooms and link their exits together.
     */
    private void createRooms()
    {
        Room outside, pub, Build, GhostBuild1, GhostBuild2, GhostBuild3;
        Room church, field, hall, cinema, store, pool, basketball_field;
        // create the rooms
        outside = new Room("你攥紧了佛珠，决心一定要跑出去");
        Build = new Room("公交车站");
        GhostBuild1 = new Room("鬼楼一");
        GhostBuild2 = new Room("鬼楼二");
        GhostBuild3 = new Room("鬼楼三");
        field = new Room("田地");
        cinema = new Room("电影院");
        church = new Room("教堂");
        store = new Room("商店");
        hall = new Room("报告厅");
        pool = new Room("游泳池");
        // initialise room exits
        outside.setExit("北", hall);
        outside.setThing(new Thing("苹果",10));
        outside.setThing(new Thing("香蕉",15));
        
        hall.setExit("北", GhostBuild1);
        hall.setExit("南", outside);
        hall.setExit("东", store);
        hall.setThing(new Thing("苹果", 10));
        hall.setThing(new Thing("金钥匙", -1));
        
        GhostBuild1.setExit("东", GhostBuild2);
        GhostBuild1.setExit("南", hall);
        GhostBuild1.setThing(new Thing("红色木盒", -1));
        GhostBuild1.setThing(new Thing("textbook", -5));
        
        GhostBuild2.setExit("东", GhostBuild3);
        GhostBuild2.setExit("南", store);
        GhostBuild2.setThing(new Thing("红色衣服", -5));
        
        GhostBuild3.setExit("南", cinema);
        GhostBuild3.setExit("西", GhostBuild2);
        
        store.setExit("北", GhostBuild2);
        store.setExit("南", church);
        store.setExit("东", cinema);
        store.setThing(new Thing("薯片", 5));
        store.setThing(new Thing("水", 5));
        store.setThing(new Thing("面包", 15));
        
        church.setExit("北",store);
        church.setExit("东",store);
        church.setThing(new Thing("刘大师的宝器", 50));
        church.setThing(new Thing("牛奶", 15));
        
        pool.setExit("西", church);
        pool.setExit("北", church);
        pool.setThing(new Thing("小吃", 15));
        
        
        cinema.setExit("北", GhostBuild3);
        cinema.setExit("南", pool);
        cinema.setExit("西", store);
        cinema.setThing(new Thing("地图", 3));
        
        currentRoom = outside;  // start game outside
    }

    /**
     *  Main play routine.  Loops until end of play.
     */
    public void play() 
    {            
        printWelcome();

        // Enter the main command loop.  Here we repeatedly read commands and
        // execute them until the game is over.
                
        boolean finished = false;
        while (! finished) {
            Command command = parser.getCommand();
            finished = processCommand(command);
        }
        System.out.println("Thank you for playing.  Good bye.");
    }

    /**
     * Print out the opening message for the player.
     */
    private void printWelcome()
    {
        System.out.println();
        System.out.println("徒弟：师傅，你看有个叫唐显生的人叫我拿了一盒东西给您");
        System.out.println("师傅：唐显生！！十年前死掉的那个13路公交车司机才叫唐显生！！");
        System.out.println("师傅：快，快去山东菏泽曹县找刘庆柱！！");
        System.out.println("十年前的那场意外就算是我吴云波也无能为力啊，这个佛珠可保你一时平安");
        System.out.println("然后鬼魂抢先一步，刘大师近在咫尺，你却无能为力，绝望之际刘大师在鬼打墙中为你部下法宝");
        System.out.println("只要找到法宝在阵眼便可以出去");
        System.out.println("有问题请输入‘help’寻求帮助");
        System.out.println();
        System.out.println("你在" + currentRoom.getDescription());
        System.out.println();
        currentRoom.checkThing();
        currentRoom.printExits();
    }

    /**
     * Given a command, process (that is: execute) the command.
     * @param command The command to be processed.
     * @return true If the command ends the game, false otherwise.
     */
    private boolean processCommand(Command command) 
    {
        boolean wantToQuit = false;

        if(command.isUnknown()) {
            System.out.println("无效命令");
            return false;
        }

        String commandWord = command.getCommandWord();
        
        CommandWord cmd = CommandWord.valueOf(commandWord.toUpperCase());
        
        switch(cmd) {
            case HELP:
                printHelp();
                break;
            case GO:
                player.walk();
                if (!player.isAlive()) {
                    System.out.println("你已经没有体力");
                    return true;
                }
                goRoom(command);
                break;
            case QUIT:
                wantToQuit = quit(command);
                break;
            case EAT:
                eat(command);
                break;
            case PICK:
                pickThing(command);
                break;
            case BAG:
                player.checkBag();
                break;
            default:
        }
        return wantToQuit;
    }
    
    private void eat(Command command) {
        String name = command.getSecondWord();
        Thing thing = currentRoom.getThing(name);
        
        if(!command.hasSecondWord()) {
                System.out.println("请与对象一起输入");
                return;
        }
        
        if(currentRoom.getThing(name) != null) {
            Thing food = currentRoom.getThing(name);
            player.eatInRoom(thing);
            System.out.println("吃掉了：" + food.toString());
            player.check();
            currentRoom.removeThing(name);
            currentRoom.checkThing();
            currentRoom.printExits();
            return;
        }
        else {
            player.eat(command.getSecondWord());
        }
    }

    // implementations of user commands:

    /**
     * Print out some help information.
     * Here we print some stupid, cryptic message and a list of the 
     * command words.
     */
    private void printHelp() 
    {
        System.out.println("看来你遇到了一些问题");
        System.out.println();
        CommandWords.addCommandsList();
        System.out.println("请用力逃出去吧");
    }

    /** 
     * Try to go in one direction. If there is an exit, enter
     * the new room, otherwise print an error message.
     */
    private void goRoom(Command command) 
    {
        if(!command.hasSecondWord()) {
            // if there is no second word, we don't know where to go...
            System.out.println("Go where?");
            return;
        }
        
        String direction = command.getSecondWord();
        Room nextRoom = currentRoom.goNext(direction);
        
        currentRoom = nextRoom;
        if (nextRoom == null) {
                System.out.println("没有这个出口!");    
        }
        else
        {
            if(currentRoom.checkroom().equals(currentRoom.getDescription()))
            {
                if(count == 1){
                    
                
                        System.out.println("通关");
                        System.exit(0);
                    }   
                  else if(count == 2) {
                        System.out.println("特殊通关");
                        System.exit(0);
                  
               
                    }
            }
            else{
                System.out.println("你在 " + currentRoom.getDescription());
                currentRoom.checkThing();
                currentRoom.printExits();
                player.check();
            }
        }
    }
    
    private void pickThing(Command command)
    {
        
        String name = command.getSecondWord();
        if(!command.hasSecondWord()) {
            if (currentRoom.getThing(name) == null) {
                System.out.println("请与对象一起输入");
                return;
            }
        }
        else if(currentRoom.getThing(name) == null) {
            System.out.println("这里没有可以捡的东西");
            return;
        }
        if(currentRoom.checkbox().equals(name)){
            count++;
        }
        if(currentRoom.checkgoods().equals(name)){
            count++;
        }
        player.pick(currentRoom.getThing(name));
        currentRoom.removeThing(name);
    }
    
    /** 
     * "Quit" was entered. Check the rest of the command to see
     * whether we really quit the game.
     * @return true, if this command quits the game, false otherwise.
     */
    private boolean quit(Command command) 
    {
        if(command.hasSecondWord()) {
            System.out.println("Quit what?");
            return false;
        }
        else {
            return true;  // signal that we want to quit
        }
    }
}