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  #1  
Old 01-02-2013, 03:12 PM
Gunderak Gunderak is offline
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Graal Stock Market

Today I present you with a fully functional mini stock market.
Each player starts with $1,000 virtual cash (clientr.stockcash).
You can then purchase stocks (defined in the DBNPC "Stocks").
When the NYSE stock market is open, the stocks will update every second.
Whilst the NYSE market is closed players can still purchase stocks and sell, but won't make any profit or loss.
The configuration is pretty simple.
In the DBNPC "Stocks", just add the stock name and symbol to the array.
Then upload the weapon script and add it to whoever.
All code can be found in the attached file, Stocks.zip.
It's important the DBNPC is named "Stocks".
The code may not be the best way to do it all but it works and is fairly secure.
To purchase a stock, select it on the left and then change the quantity with the up/down buttons and click buy.
Selling, select it on the right hand side and click sell.

Edit:
v1.2
Updated code to provide live stock data when market is closed.
Fixed a few bugs.
Fixed a possible exploit.
v1.3
Added charts.
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Attached Files
File Type: zip Stocks.zip (2.7 KB, 97 views)
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Last edited by Gunderak; 01-03-2013 at 11:25 AM..
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  #2  
Old 01-02-2013, 06:00 PM
papajchris papajchris is offline
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Really cool. I think something like this would be a far better way to gamble than bet flipping on Era.
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  #3  
Old 01-02-2013, 08:20 PM
Hezzy002 Hezzy002 is offline
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Let me know when this goes live, I already found 3 exploits just looking through the code once-over. Can't wait to break your server.
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  #4  
Old 01-02-2013, 08:53 PM
BboyEatsbacon BboyEatsbacon is offline
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Quote:
Originally Posted by Hezzy002 View Post
Let me know when this goes live, I already found 3 exploits just looking through the code once-over. Can't wait to break your server.
Why not suggest ways to patch this rather than being a **** about it?
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  #5  
Old 01-02-2013, 09:39 PM
Hezzy002 Hezzy002 is offline
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because i dont like gunderak!!
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  #6  
Old 01-03-2013, 12:50 AM
BboyEatsbacon BboyEatsbacon is offline
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Quote:
Originally Posted by Hezzy002 View Post
because i dont like gunderak!!
Oh, proceed then.
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  #7  
Old 01-03-2013, 04:27 AM
Gunderak Gunderak is offline
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Hezzy just **** off.
You're so cool, you'll hack virtual currency in a game.
And how do you suppose to hack it, it's all server side.
Might make even more checks just to piss you off.
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Old 01-03-2013, 04:29 AM
Hezzy002 Hezzy002 is offline
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kiss me gunderak
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  #9  
Old 01-03-2013, 04:46 AM
Gunderak Gunderak is offline
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Just piss off.
I coded it to be a bit of fun.
Not for people like yourself to just offer negativity towards it.
If you have something useful to say, feel free. Otherwise, go crawl back under that rock of yours.
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Old 01-03-2013, 05:56 AM
Tricxta Tricxta is offline
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You know... it'd be "way cool" if you made your own independent system and base stocks off in game businesses. Then determine stock price via items sold each day or whatever, amount of stocks available and demand for that stock.

Also I notice you don't have divdends implemented, always room for an update!
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  #11  
Old 01-03-2013, 06:01 AM
Gunderak Gunderak is offline
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I was considering making my own stocks, I did to some degree, But it failed.
And basing it off items wouldn't really work, seeming you'd have to code it in your self.
So it would work for one server only really.
And dividends, eh, I mean I suppose you could make it pay out every hour of online time or something, I don't know. Can't really make it annually lol.
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  #12  
Old 01-03-2013, 06:03 AM
Gunderak Gunderak is offline
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This was my initial attempt at making fake stocks.
Instead of having to wait t'ill the real stock market is open.
Graal Script Code:
function onCreated(){
  
onTimeout();
  
this.stocks = {
    {
"Graalordinates", -212},
    {
"PlayerKillCo", -53},
    {
"UnixmadBreadFund", -710},
    {
"BrokeLenders", -613},
    {
"Gold", -123},
    {
"Silver", -0.512},
    {
"Oil", -2.615},
    {
"Facebook", -418},
    {
"Google", -314},
    {
"Yahoo", -211},
  };
}
function 
onTimeout(){
  for(
0this.stocks.size(); ++){
    
temp.stock this.stocks[i][0];
    
temp.min this.stocks[i][1];
    
temp.max this.stocks[i][2];
    
temp.amnt random(minmax);
    if(
this.stock_price.(@stock) < amnt){
      
this.stock_price.(@stock) += random(0.010.02);
    }
    if(
this.stock_price.(@stock) > amnt){
      
this.stock_price.(@stock) -= random(0.010.02);
    }
    
temp.min this.stock_price.(@stock) < 0;
    
this.stock_price.(@stock) = this.stock_price.(@stock[0]).substring(0, (min?5:4));
  }
  
settimer(5);

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Remote PM {P*}x (Graal813044) from eraiphone -> Stefan: I hav 1 qustion
*Gunderak: he hav 1
*Gunderak: qustion
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  #13  
Old 01-03-2013, 04:59 PM
BlueMelon BlueMelon is offline
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Graal Script Code:
  if(params[0] == "Buy"){
    
temp.rate Stocks.stock_price.(@params[1]);
    
temp.amnt params[2];
    
temp.price amnt*rate;
    if(
clientr.stockcash >= price){
      
clientr.stockcash -= price;
      
clientr.stocks.(@int(random(1,9999999)))= {params[1], rateamnt};
      
clientr.stockcash clientr.stockcash.substring(0clientr.stockcash.pos(".") + 3);
    }
  }
  if(
params[0] == "Sell"){
    
temp.rate Stocks.stock_price.(@params[1]);
    for(
temp.getstringkeys("clientr.stocks.")){
      
temp.amnt clientr.stocks.(@i)[2];
      
temp.price amnt*rate;
      
temp.checkname clientr.stocks.(@i)[0];
      if(
checkname == params[1]){
        
temp.checkrate clientr.stocks.(@i)[1];
        if(
checkrate.pos(params[2]) >= 0){
          
temp.checkquantity clientr.stocks.(@i)[2];
          if(
checkquantity == params[3]){;
            if(
clientr.stocks.(@i) == null) return;
            
clientr.stocks.(@i) = null;
            
clientr.stockcash += price;
            return;
          }
        }
      }
    }
  } 
No validation? Huge security holes... What if params[1] or params[2] was negative?
clientr.stockcash -= -(price);

See where I'm going?
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  #14  
Old 01-03-2013, 05:26 PM
Hezzy002 Hezzy002 is offline
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not only that but stocks are stupid
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  #15  
Old 01-03-2013, 05:28 PM
James James is offline
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lol ^
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