package electrosphere.engine.loadingthreads;

import java.util.concurrent.Semaphore;

/**
 * Threads for loading engine state
 */
public class LoadingThread extends Thread {
    
    public static final int LOAD_TITLE_MENU = 0; //loads the main game title menu
    public static final int LOAD_MAIN_GAME = 1; //loads the main game
    public static final int LOAD_ARENA = 2; //loads the arena
    public static final int LOAD_CHARACTER_SERVER = 3; //loads the character creation menus on the client
    public static final int LOAD_CLIENT_WORLD = 4; //loads the client world
    public static final int LOAD_DEBUG_RANDOM_SP_WORLD = 5; //loads a random singleplayer debug world
    public static final int LOAD_LEVEL_EDITOR = 6; //loads the level editor
    public static final int LOAD_LEVEL = 7; //loads a level
    public static final int LOAD_DEMO_MENU = 8; //loads the main menu ui for the demo version of the client
    
    //the type of loading to do
    int threadType;
    
    //a lock to track when the loading had completed and block until then
    Semaphore lock;
    
    /**
     * Creates the work for a loading thread
     * @param type The type of thread
     */
    public LoadingThread(int type){
        threadType = type;
        lock = new Semaphore(1);
    }
    
    @Override
    public void run(){
        lock.acquireUninterruptibly();
        switch(threadType){
            
            case LOAD_TITLE_MENU: {
                ClientLoading.loadMainMenu();
            } break;
                
            case LOAD_MAIN_GAME: {
                ServerLoading.loadMainGameServer();
            } break;
                
            case LOAD_ARENA: {
                ArenaLoading.loadArenaGameServer();
            } break;
            
            case LOAD_CHARACTER_SERVER: {
                ClientLoading.loadCharacterServer();
            } break;
                
            case LOAD_CLIENT_WORLD: {
                ClientLoading.loadClientWorld();
            } break;


            //intended to act like you went through the steps of setting up a vanilla settings SP world
            case LOAD_DEBUG_RANDOM_SP_WORLD: {
                DebugSPWorldLoading.loadDebugSPWorld();
            } break;

            //loads the level editor
            case LOAD_LEVEL_EDITOR: {
                LevelEditorLoading.loadLevelEditor();
            } break;

            //loads the save in Globals.currentSave as a level
            case LOAD_LEVEL: {
                LevelLoading.loadLevel();
            } break;

            //the demo menu ui
            case LOAD_DEMO_MENU: {
                DemoLoading.loadDemoMenu();
            } break;
                
        }
        lock.release();
    }
    
    /**
     * Checks if the thread has finished loading
     * @return true if it has finished, false otherwise
     */
    public boolean isDone(){
        boolean rVal = lock.tryAcquire();
        if(rVal == true){
            lock.release();
        }
        return rVal;
    }
    
}