Game.java

import greenfoot.*;
import java.security.*;


/**
 * This class is a façade (http://pt.wikipedia.org/wiki/Fa%C3%A7ade) for the most important functions in the GameScriptFacade.
 * 
 * @author Tony Alexander Hild
 * @version 0.1a
 */
public final class Game
{
    
    public static final int WEST = 0;
    public static final int NORTH = 1;
    public static final int EAST = 2;
    public static final int SOUTH = 3;    
    public static final int NONE = -1;    

    private static SecureRandom random = new SecureRandom();
    private static Inventory inventory = new Inventory();
    private static boolean isRunning;
    private static boolean isSet;

    /**
     * Singleton object
     */
    /*
    private final static Game instance = new Game();
    */
    
    /**
     * Constructor for objects of class DialogueManager
     */
    private Game() {
    }
    
    /*
    public static Game getInstance() {
        return instance;
    }   
    */
   
    public static SceneManager getSceneManager() {
        return SceneManager.getInstance();
    }
    
    public static SoundManager getSoundManager() {
        return SoundManager.getInstance();
    }
    
    public static DialogueManager getDialogueManager() {
        return DialogueManager.getInstance();
    }
    
    public static void update() {
        SceneManager.getInstance().update();
    }
    
    public static void playSound(String sound) {
        SoundManager.getInstance().playSound(sound);
    }
    
    public static void playLoopSound(String sound) {
        SoundManager.getInstance().playSound(sound, true);
    }

    public static void stopSound(String sound) {
        SoundManager.getInstance().stopSound(sound);
    }
    
    public static void addEntity(Entity entity) {
        SceneManager.getInstance().addEntity(entity);
    }
    
    public static Entity getEntity(String name) {
        return SceneManager.getInstance().getEntity(name);
    }
    
    public static void setCurrentWorld(World world) {
        SceneManager.getInstance().setCurrentWorld(world);
    }
    
    public static World getCurrentWorld() {
        return SceneManager.getInstance().getCurrentWorld();
    }
    
    public static void setActionWorld(ActionWorld world) {
        SceneManager.getInstance().setActionWorld(world);
    }
    
    public static ActionWorld getActionWorld() {
        return SceneManager.getInstance().getActionWorld();
    }
    
    public static void resumeToActionWorld() {
        SceneManager.getInstance().resumeToActionWorld();
    }
    
    public static void setPc(PlayerCharacter pc) {
        SceneManager.getInstance().setPc(pc);
    }
    
    public static PlayerCharacter getPc() {
        return SceneManager.getInstance().getPc();
    }
    
    public static Dialogue getDialogue(String id) {
        return DialogueManager.getInstance().getDialogue(id);
    }
    
    public static boolean isDialogueClosed(String id) {
        return DialogueManager.getInstance().isDialogueClosed(id);
    }
    
    public static Dialogue openDialogue(String id, PlayerCharacter player, Character interlocutor) {
        return DialogueManager.getInstance().openDialogue(id, player, interlocutor);
    }
    
    public static boolean exitDialogue(String id) {
        return DialogueManager.getInstance().exitDialogue(id);
    }

    public static void enableDialogueChoices(boolean enabled) {
        DialogueManager.getInstance().enableDialogueChoices(enabled);
    }
   
    public static Dialogue redirectToDialogue(String id, PlayerCharacter player, Character interlocutor) {
        return DialogueManager.getInstance().redirectToDialogue(id, player, interlocutor);
    }
    
    public static void updateDialogueMessages() {    
        DialogueManager.getInstance().updateDialogueMessages();
    }
   
    public static boolean closeDialogue(String id) {
        return DialogueManager.getInstance().closeDialogue(id);
    }    
    
    public static void setScene(Scene scene) {
        SceneManager.getInstance().setScene(scene);
    }
    
    public static Scene getScene() {
        return SceneManager.getInstance().getScene();
    }
    
    public static void addScene(Scene scene) {
        SceneManager.getInstance().addScene(scene);
    }
    
    public static String generateRandomString() {
        return new java.math.BigInteger(130, random).toString(32);
    }

    public static Inventory getInventory() {
        return inventory;
    }
    
    public static void openInventory() {
        inventory.openInventory();
    }
    
    public static void addInventoryItem(InventoryItem item) {
        inventory.addItem(item);
    }
    
    public static void playMusic() {
        SceneManager.getInstance().playMusic();
    }
    
    public static void pauseMusic() {
        SceneManager.getInstance().pauseMusic();
    }

    public static boolean isRunning() {
        return isRunning;
    }
    
    public static void setup() {
        if(!isSet) {
            ScriptManager.invokeMethod("scripts", "gameConfig", "setup");
            isSet = true;
        }
    }
    
    public static void start() {
        if(!isSet) {
            setup();
        }
        isRunning = true;
        ScriptManager.invokeMethod("scripts", "gameConfig", "start");
    }

    public static void pause() {
        isRunning = false;
        ScriptManager.invokeMethod("scripts", "gameConfig", "pause");
    }

}