[SOLVED]How to create a Hiscore Table in EE

Otolone · 01-30-2018 10:56 AM

Hi there!
How do I create a Highscore table in EE.
I used MEMC memory container to hold

Class PlayerData
{
str Name;
int score = 0;
}
to hold the data for each player.
How do I save this data to hold the the scores even if I exit the application?
I guess I have to use the File object to write to disk?
Any suggestions will be appreciated.
Thanks.

Tottel · 01-30-2018 02:11 PM

If you're planning on having lots of players, and load this data selectively for certain players who play again, I'd recommend using a database instead.

Otolone · 01-31-2018 10:53 AM

Thanks. I guess I have to learn database management.

**Esenthel** · 02-01-2018 03:48 AM

You don't need a database for that.
Yes you can use File or TextData if you want to store in text format.
I recommend looking into tutorials, many of them have some sort of saving data to files.

RedcrowProd · 02-02-2018 01:35 AM

it really depends hows the idea behind the highscore.
is it online? if yes, then are you saving those to be per player ? when do you need to read it ? how big is it going to be ? then DB might suit best.

if its a highscore for local machine, with just different profile, for sure use file for that.

Otolone · 02-16-2018 04:48 PM

Why does the code below work while the second version crashes?
//Version1
/*****************************************************************

Code:

player_name = "John";

int score = 100;

/*****************************************************************/

class PlayerData

{

   Str name;

   int score;

}

Memc<PlayerData>names;

/***************************************************************/

int compare(const PlayerData &a, const PlayerData &b)

{

   if(a.score<b.score)return -1;

   if(a.score>b.score)return 1;

   return 0;

}

/*****************************************************************/

void save()

{

   {

      File f; // file object

      f.append("score.dat"); //  let's append a real file on Hard Disk

      f.putInt(score);    

   }

   {

      File f;

      f.append("names.dat"); 

      f.putStr (Player_name );

   }

}

void load()

{

    // when the file is created we can now read objects it

   {

      File f;

        Str str;

        f.read   ("names.dat"); // start reading file  

        if(f.is())

        while(!f.end())

        {

      str=f.getStr (); 

      PlayerData &l_name=names.New();

      l_name.name = str;

      }

   }

   {

      File f;

        int score;

        int cnt=0;

        f.read   ("score.dat"); // start reading file     

        if(f.is())

        while(!f.end())

        {

      score = f.getInt();

      names[cnt].score = score;

      cnt++;        

       }

   }

   names.sort(compare);

}

/******************************************************************************

bool InitEnd()

{

save();

load();

   return true;

}

/******************************************************************************

void ShutEnd()

{

}

/******************************************************************************

bool UpdateEnd()

{

   if(Kb.bp(KB_ESC))return false;

   return true;

}

/******************************************************************************

void DrawEnd()

{

   D.clear(TURQ);

   REPA(names)

   D.text (0, i*0.1, S + names[i].name+ "   "+ names[i].score); // display data obtained from file

}

State BackEnd(UpdateEnd, DrawEnd, InitEnd,ShutEnd);

/*************************************************************/

[\code]

[code]

Zervox · 02-17-2018 02:27 AM

Please use the code tags and segment the code.

Otolone · 02-17-2018 03:55 PM

But this code crashes on running it twice.
Version 2.

Code:

/********************************************************************************​******/

Str player_name = "John";

int score = 200;

class PlayerData

{

   Str  name;

   int score;

}

Memc<PlayerData>memc;

/********************************************************************************​******/

int compare(const PlayerData &a, const PlayerData &b )

{

   if(a.score<b.score)return -1;

   if(a.score>b.score)return 1;

   return 0;

}

/*******************************************************************************/

void Save()

{

   File f;

   PlayerData player;

   player.name = Player_name;

   player.score = score;

   f.append("hiscore.dat");

   f.put((cptr)&player, sizeof player);

}

/******************************************************************************/

void Load()

{

   PlayerData player;

   File f;

   f.read("hiscore.dat");

   while(!f.end())

   {

      PlayerData &player_Data = memc.New();

      if(f.get((ptr)&player, sizeof player))

      {

        player_Data.name = player.name;

        player_Data.score = player.score; 

      }      

   }

}

 /******************************************************************************/

bool InitBackend() // initialize after engine is ready

{

   Save();

   Load();

memc.sort(compare);

   return true;

}

/******************************************************************************/

void ShutBackend() // shut down at exit

{

   // this is called when the engine is about to exit

}

/******************************************************************************/

bool UpdateBackend() // main updating

{

   if(Kb.bp(KB_ESC))return false; // exit if escape on the keyboard pressed

   return true;                   // continue

}

/******************************************************************************/

void DrawBackend() // main drawing

{

   // here you have to tell engine what to draw on the screen

   D.clear(TURQ); // clear screen to turquoise color

   REPA(memc)

   D.text (0, i*0.1, S+memc[i].name + "  "+ memc[i].score);

}

State BackEnd(UpdateBackend, DrawBackend, InitBackend,ShutBackend);

[\code][code]

Thanks

Otolone · 02-17-2018 05:00 PM

I am sorry Zervox for udating and posting my code after your suggestions.I am not familiar with the code tags.
Thanks for the suggestion.

Zervox · 02-18-2018 02:41 AM

When storing an object directly I am pretty sure you have to use fixed length arrays, like Char name[30] to force it to a fixed size, else it will try to read something which isn't there.

I usually make a void Save(File &f) function to the classes when I want to store them to files so that I only have one place to modify and find that specific class' save/load functionality. I personally do not save pointers to file.

could be a bug or it could be intentional.

Otolone · 02-18-2018 05:15 PM

Thanks I will work on that

[SOLVED]How to create a Hiscore Table in EE
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