I want to know how the userinfo works, and how I can use it to make highscores for each level in my game, like it is used in the scenario Kara Sokoban.
Thanks for your time.
Zamoht wrote ...
2012/8/8
Highscores using userinfo (Asked before)
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As I understand it, userinfo gives access to data which is saved on greenfoot.org
For Highscores you could import the class for a scoreboard, you can import it in greenfoot itself, just click on edit, import class and then on scoreboard.
look at my scenarios, most of them have use userdata. this is a simple one http://www.greenfoot.org/scenarios/4045
But how do you 'upload' and 'download' the information, and how do you assign a value to an user? I'm not very good at coding, so I'm going to need a detailed description on how to do this.
when you die you could do:
and for the getScore() method:
if (PlayerData.isStorageAvailable())
{
PlayerData me = PlayerData.getMyData();
if (me != null)
{
if (getScore() > me.getScore())
{
// It's a high-score, only update the score if ours is now higher:
me.setScore(getScore());
me.store();
}
//Greenfoot.setWorld(new ScoreWorld(getWidth(), getHeight()));
Greenfoot.setWorld(new dead());
}
}
else
{
Greenfoot.stop();
} public int getScore()
{
return Score; //returns you score
}
The way it is used in Kara Sokoban (right now) is not the optimal way to use it (but works for what it is). We were discussing a better approach to saving level scores. The main line is this: since a string consists of an array of characters, and each character is 16-bits long, then each character can 'hold' a value between 0 and 65,535.
A character can be made from an integer with the following:
To concatenate multiple scores into a String:
If the string is longer than 50, you can split it up among the 5 Strings available.
Next, you need to able to get the information back out of the string.
That is the basics for storing and retrieving the scores stored in the Strings.
As far as the basics for using the UserInfo class, refer to the API and the code snippet supplied there.
Make sure you save any new data to the UserInfo file by using the 'store()' method.
If you have more specific question, do not hesistate to ask.
int score = 93; char ch = (char) score;
String levelScores = "";
int[] scores = { 93, 59, 33, 50, 114, 146, 91, 58, 188, 38 };
for (int i = 0; i < scores.length; i++) levelScores += (char) scores[i];String levelScores = ""; for (int i = 0; i < 5; i++) levelScores += getString(i); int[] scores = new int[levelScores.length()]; for (int i = 0; i < scores.length; i++) scores[i] = (int) levelScores.charAt(i);
To explain the last code snippet:
Line 2 concatenates the 5 Strings into one String variable.
Line 3 creates an 'int' array to hold all the scores.
Line 4 converts each character in the concatenated string back to 'int' values and stores them in the new 'int' array.
@tylers, your code is outdated (Beta code). The method names were changed in the final release. i.e. 'PlayerData' is now 'UserInfo'; 'getMyData()' is now 'getMyInfo()'; etc.
@Zamoht, the code snippet in the header of the UserInfo API shows how to retrieve the UserInfo data for the current user. It also shows how to store the new (changed) data.
@tylers, your code is outdated (Beta code). The method names were changed in the final release. i.e. 'PlayerData' is now 'UserInfo'; 'getMyData()' is now 'getMyInfo()'; etc.
@Zamoht, the code snippet in the header of the UserInfo API shows how to retrieve the UserInfo data for the current user. It also shows how to store the new (changed) data.
@Zamoht, what do you mean by 'how do you assign a value to a user'? Be specific as to what you would be trying to do.
I think i got some of it, i may get some new questions through the process. Oh first question you talk alot about 5 Strings, but does it matter what you call these Strings when you store() them and (how ever you get stored data back)?
Maybe the methods were re-directed to the appropriate 'new' methods, so you would not have to go back and re-edit everything? (possible! but, not sure.)
Zamoht wrote...
does it matter what you call these Strings when you store() them@danpost sorry if this is just a stupid question and I'm repeating myself and you've already answered, but if i use UserInfo myInfo = UserInfo.getMyInfo(); (I use that to store the data in a runtime object right). Then I can store a string in a runtime string by using 'String whatEverName = myInfo.getString;' (something like that) what if I want to get the data from another string (there is 5 right) I can't use myInfo.getString again? This text might be as confusing as I'm confused.
@tylers the scenario is great, but why do you use PlayerData and not UserInfo (saw danpost's answer the PlayerData was a beta)? And do you need to import anything or is the class imported with Greenfoot?
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