Problem to go to another world scene in level select lock/unlock

Hello everyone,

http://www.thegamecontriver.com/2014/09/create-level-lock-unlock-system-unity-46.html#comment-form

I´m follow this tutorial to make a Level lock/unlock system to my game and it´s works but when i finish the levels in the first world, i can´t change/go to the second world scene. My script it´s very similar to the tutorial.

Thank you. The codes it´s here:

My scenes have name: the worlds to select levels:

World1 World2

Levels scenes:

Level1.1 Level1.2 .. Level2.1 Level2.2

first script:

using UnityEngine; using System.Collections;

public class LockLevel : MonoBehaviour {

 public static int worlds = 2; //number of worlds
 public static int levels = 3; //number of levels
 
 private int worldIndex;   
 private int levelIndex;   
 
 
 void  Start (){
     PlayerPrefs.DeleteAll(); //erase data on start
     LockLevels();   //call function LockLevels
 }
 
 //function to lock the levels
 void  LockLevels (){
     //loop thorugh all the levels of all the worlds
     for (int i = 0; i < worlds; i++){
         for (int j = 1; j < levels; j++){
             worldIndex  = (i+1);
             levelIndex  = (j+1);
             //create a PlayerPrefs of that particular level and world and set it's to 0, if no key of that name exists

if(!PlayerPrefs.HasKey("level"+worldIndex.ToString() +":" +levelIndex.ToString())){ PlayerPrefs.SetInt("level"+worldIndex.ToString() +":" +levelIndex.ToString(),0); }
} } } }

Second Script:

using UnityEngine; using System.Collections;

public class LevelSelectScript : MonoBehaviour {

 private int worldIndex;   
 private int levelIndex;   
 
 void  Start (){
     //loop thorugh all the worlds
     for(int i = 1; i <= LockLevel.worlds; i++){
         if(Application.loadedLevelName == "World"+i){
             worldIndex = i;
             CheckLockedLevels(); 
         }
     }
 }
 
 //Level to load on button click. Will be used for Level button click event 
 public void Selectlevel(string worldLevel){
     Application.LoadLevel("Level"+worldLevel); //load the level
 }
 
 //uncomment the below code if you have a main menu scene to navigate to it on clicking escape when in World1 scene
 /*public void  Update (){

if (Input.GetKeyDown(KeyCode.Escape) ){ Application.LoadLevel("MainMenu"); }
}*/

 //function to check for the levels locked
 void  CheckLockedLevels (){
 
     //loop through the levels of a particular world
 
     for(int j = 1; j < LockLevel.levels; j++){
 
         levelIndex = (j+1);
 

if((PlayerPrefs.GetInt("level"+worldIndex.ToString() +":" +levelIndex.ToString()))==1){

             GameObject.Find("LockedLevel"+(j+1)).active = false;
 
             Debug.Log ("Unlocked");
         }
     }
 }

}

Third script: the player part when he comes to the goal:

protected void UnlockLevels (){ //set the playerprefs value of next level to 1 to unlock for(int i = 0; i < LockLevel.worlds; i++){

 Debug.Log(i);
 
 for(int j = 1; j < LockLevel.levels; j++){
 

            
 if(currentLevel == "Level"+(i+1).ToString() +"." +j.ToString()){
 
 worldIndex  = (i+1);
 
 levelIndex  = (j+1);
 
 PlayerPrefs.SetInt("level"+worldIndex.ToString() +":" +levelIndex.ToString(),1);
 
             }
         }
     }
     Application.LoadLevel("World1");

//I try Application.LoadLevel("World1"+((worldIndex+1).ToString)); but doesn´t work

 }