Local Highscore save (C#) iOS

hello everyone, I have a code, and I was just wondering how I would be able to save a score. The score is calculated based on distance. I have researched this extensively, and could not find anything. Any help is appreciated! Thanks.

Code (CSharp):

1. using UnityEngine;
2.  
3. public class Runner : MonoBehaviour {
4.  
5.     public static float distanceTraveled;
6.     private static int boosts;
7.    
8.     public float acceleration;
9.     public Vector3 boostVelocity, jumpVelocity;
10.     public float gameOverY;
11.    
12.     private bool touchingPlatform;
13.     private Vector3 startPosition;
14.    
15.     void Start () {
16.         GameEventManager.GameStart += GameStart;
17.         GameEventManager.GameOver += GameOver;
18.         startPosition = transform.localPosition;
19.         renderer.enabled = false;
20.         rigidbody.isKinematic = true;
21.         enabled = false;
22.     }
23.    
24.     void Update () {
25.         if(Input.GetMouseButtonDown(0)){
26.             if(touchingPlatform){
27.                 rigidbody.AddForce(jumpVelocity, ForceMode.VelocityChange);
28.                 touchingPlatform = false;
29.             }
30.             else if(boosts > 0){
31.                 rigidbody.AddForce(boostVelocity, ForceMode.VelocityChange);
32.                 boosts -= 1;
33.                 GUIManager.SetBoosts(boosts);
34.             }
35.         }
36.         distanceTraveled = transform.localPosition.x;
37.         GUIManager.SetDistance(distanceTraveled);
38.        
39.         if(transform.localPosition.y < gameOverY){
40.             GameEventManager.TriggerGameOver();
41.         }
42.     }
43.  
44.     void FixedUpdate () {
45.         if(touchingPlatform){
46.             rigidbody.AddForce(acceleration, 0f, 0f, ForceMode.Acceleration);
47.         }
48.     }
49.  
50.     void OnCollisionEnter () {
51.         touchingPlatform = true;
52.     }
53.  
54.     void OnCollisionExit () {
55.         touchingPlatform = false;
56.     }
57.  
58.     private void GameStart () {
59.         boosts = 0;
60.         GUIManager.SetBoosts(boosts);
61.         distanceTraveled = 0f;
62.         GUIManager.SetDistance(distanceTraveled);
63.         transform.localPosition = startPosition;
64.         renderer.enabled = true;
65.         rigidbody.isKinematic = false;
66.         enabled = true;
67.     }
68.    
69.     private void GameOver () {
70.         renderer.enabled = false;
71.         rigidbody.isKinematic = true;
72.         enabled = false;
73.     }
74.    
75.     public static void AddBoost(){
76.         boosts += 1;
77.         GUIManager.SetBoosts(boosts);
78.     }
79. }

 

If you want to save small pieces of data, take a look at PlayerPrefs:
http://docs.unity3d.com/ScriptReference/PlayerPrefs.html
Especially; PlayerPrefs.SetInt() and PlayerPrefs.GetInt()

 

Thanks for replying! Yes, I have come across Player Prefs, but as I making an iOS game, I am not sure how I would integrate that into the iPhone.

 

PlayerPrefs works on all OSs and platforms.

 

Here is a simple way to use PlayerPrefs to get a distance high score in your code:

Code (CSharp):

1. using UnityEngine;
2. public class Runner : MonoBehaviour {
3.     public static float distanceTraveled;
4.     public static float longestDistanceTraveled;
5.     private static int boosts;
6.  
7.     public float acceleration;
8.     public Vector3 boostVelocity, jumpVelocity;
9.     public float gameOverY;
10.  
11.     private bool touchingPlatform;
12.     private Vector3 startPosition;
13.  
14.     void Start () {
15.         GameEventManager.GameStart += GameStart;
16.         GameEventManager.GameOver += GameOver;
17.         startPosition = transform.localPosition;
18.         renderer.enabled = false;
19.         rigidbody.isKinematic = true;
20.         enabled = false;
21.     }
22.  
23.     void Update () {
24.         if(Input.GetMouseButtonDown(0)){
25.             if(touchingPlatform){
26.                 rigidbody.AddForce(jumpVelocity, ForceMode.VelocityChange);
27.                 touchingPlatform = false;
28.             }
29.             else if(boosts > 0){
30.                 rigidbody.AddForce(boostVelocity, ForceMode.VelocityChange);
31.                 boosts -= 1;
32.                 GUIManager.SetBoosts(boosts);
33.             }
34.         }
35.         distanceTraveled = transform.localPosition.x;
36.         GUIManager.SetDistance(distanceTraveled);
37.      
38.         if(transform.localPosition.y < gameOverY){
39.             GameEventManager.TriggerGameOver();
40.         }
41.     }
42.     void FixedUpdate () {
43.         if(touchingPlatform){
44.             rigidbody.AddForce(acceleration, 0f, 0f, ForceMode.Acceleration);
45.         }
46.     }
47.     void OnCollisionEnter () {
48.         touchingPlatform = true;
49.     }
50.     void OnCollisionExit () {
51.         touchingPlatform = false;
52.     }
53.     private void GameStart () {
54.         boosts = 0;
55.         GUIManager.SetBoosts(boosts);
56.         distanceTraveled = 0f;
57.         GUIManager.SetDistance(distanceTraveled);
58.         transform.localPosition = startPosition;
59.         renderer.enabled = true;
60.         rigidbody.isKinematic = false;
61.         enabled = true;
62.         longestDistanceTraveled = PlayerPrefs.GetFloat("longestDistance",0);
63.     }
64.  
65.     private void GameOver () {
66.         renderer.enabled = false;
67.         rigidbody.isKinematic = true;
68.         enabled = false;
69.  
70.         if(distanceTraveled > longestDistanceTraveled ) {
71.                 longestDistanceTraveled = distanceTraveled;
72.                 PlayerPrefs.SetFloat("longestDistance", longestDistanceTraveled);
73.         }
74.     }
75.  
76.     public static void AddBoost(){
77.         boosts += 1;
78.         GUIManager.SetBoosts(boosts);
79.     }
80. }

 

Thanks you very much, I will try this, but is there a way of displaying my score?

 

No, I only added code that loads, checks and saves the longestDistanceTraveled, making it persistent between games. You need to add a GUI Text to display it.

 

Hello, Thank you very much for your replies, I have looked at the updated code and thanks to you now have a basic understanding of PlayerPrefs. But, I am still quite lost at figuring out how to display my score. I have created the code to display GUI items, with are just simple texts in the scene applied as variables to the GUImanager script. I understand that I need to create a new Public Static Void, which I have attempted on the last few lines of code, but how would I go about displaying the longestDistanceTraveled from the Runner.cs script, I am quite lost. Thanks for your help!

Code (CSharp):

1. using UnityEngine;
2.  
3. public class GUIManager : MonoBehaviour {
4.    
5.     private static GUIManager instance;
6.    
7.     public GUIText boostsText, distanceText, gameOverText, instructionsText, runnerText, HighscoreText;
8.    
9.     void Start () {
10.         instance = this;
11.         GameEventManager.GameStart += GameStart;
12.         GameEventManager.GameOver += GameOver;
13.         gameOverText.enabled = false;
14.         HighscoreText.enabled = false;
15.     }
16.  
17.     void Update () {
18.         if(Input.GetMouseButtonDown(0)){
19.             GameEventManager.TriggerGameStart();
20.         }
21.     }
22.    
23.     private void GameStart () {
24.         gameOverText.enabled = false;
25.         instructionsText.enabled = false;
26.         runnerText.enabled = false;
27.         enabled = false;
28.         HighscoreText.enabled = true;
29.     }
30.    
31.     private void GameOver () {
32.         gameOverText.enabled = true;
33.         instructionsText.enabled = true;
34.         enabled = true;
35.         HighscoreText.enabled = true;
36.     }
37.    
38.     public static void SetBoosts(int boosts){
39.         instance.boostsText.text = boosts.ToString();
40.     }
41.  
42.     public static void SetDistance(float distance){
43.         instance.distanceText.text = distance.ToString("f0");
44.     }
45.  
46.     public static void SetHighscore(float LongestDistanceTraveled){
47.         instance.HighscoreText.text = LongestDistanceTraveled.ToString("0");
48.     }
49. }

 

This ought to do the trick:

Code (CSharp):

1. using UnityEngine;
2. public class Runner : MonoBehaviour {
3.     public static float distanceTraveled;
4.     public static float longestDistanceTraveled;
5.     private static int boosts;
6.     public float acceleration;
7.     public Vector3 boostVelocity, jumpVelocity;
8.     public float gameOverY;
9.     private bool touchingPlatform;
10.     private Vector3 startPosition;
11.     void Start () {
12.         GameEventManager.GameStart += GameStart;
13.         GameEventManager.GameOver += GameOver;
14.         startPosition = transform.localPosition;
15.         renderer.enabled = false;
16.         rigidbody.isKinematic = true;
17.         enabled = false;
18.     }
19.     void Update () {
20.         if(Input.GetMouseButtonDown(0)){
21.             if(touchingPlatform){
22.                 rigidbody.AddForce(jumpVelocity, ForceMode.VelocityChange);
23.                 touchingPlatform = false;
24.             }
25.             else if(boosts > 0){
26.                 rigidbody.AddForce(boostVelocity, ForceMode.VelocityChange);
27.                 boosts -= 1;
28.                 GUIManager.SetBoosts(boosts);
29.             }
30.         }
31.         distanceTraveled = transform.localPosition.x;
32.         GUIManager.SetDistance(distanceTraveled);
33.    
34.         if(transform.localPosition.y < gameOverY){
35.             GameEventManager.TriggerGameOver();
36.         }
37.     }
38.     void FixedUpdate () {
39.         if(touchingPlatform){
40.             rigidbody.AddForce(acceleration, 0f, 0f, ForceMode.Acceleration);
41.         }
42.     }
43.     void OnCollisionEnter () {
44.         touchingPlatform = true;
45.     }
46.     void OnCollisionExit () {
47.         touchingPlatform = false;
48.     }
49.     private void GameStart () {
50.         boosts = 0;
51.         GUIManager.SetBoosts(boosts);
52.         distanceTraveled = 0f;
53.         GUIManager.SetDistance(distanceTraveled);
54.         transform.localPosition = startPosition;
55.         renderer.enabled = true;
56.         rigidbody.isKinematic = false;
57.         enabled = true;
58.         longestDistanceTraveled = PlayerPrefs.GetFloat("longestDistance",0);
59.         GUIManager.SetHighscore(longestDistanceTraveled);
60.     }
61.     private void GameOver () {
62.         renderer.enabled = false;
63.         rigidbody.isKinematic = true;
64.         enabled = false;
65.         if(distanceTraveled > longestDistanceTraveled ) {
66.                 longestDistanceTraveled = distanceTraveled;
67.                 PlayerPrefs.SetFloat("longestDistance", longestDistanceTraveled);
68.                 GUIManager.SetHighscore(longestDistanceTraveled);
69.         }
70.     }
71.     public static void AddBoost(){
72.         boosts += 1;
73.         GUIManager.SetBoosts(boosts);
74.     }
75. }

 

Thank you very much, it worked amazingly! I have learnt so much from you and really appreciate it! Just one question; if I have one highscore set on my editor, will that highscore start on another device when they first play the game, or will it start at 0?

 

It is only saved on the device, so if you move to another device it will start from zero. If you want to persist data across devices, you need some kind of server solution. Something like:

https://github.com/playgameservices/play-games-plugin-for-unity

It's a lot of work to get it running properly...