Slot machine programmieren
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In this case, it seems like you want a there. Slot Machine in Java [closed] Ask Question. PM 8, 13 45 AThompsonCO 1 1 6.
Don't forget to fill in conditions for the ifs too. DarthJDG I suppose the if s are left for the next question How would I compare what the output is for each case?
Smitty 1 We haven't learned enum - would I literally remove my switch and enter this text instead to have it be set to any of these pre-defined constants?
No, you would switch on the enum values instead. It just makes it more readable, but if you haven't learned enums, maybe just wait till you get there.
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Those results must be submitted to the gaming commission, and must be able to be rerun and proven at any time. The casino is allowed to set the machine to whichever payback it wants.
The commission doesn't oversee what the machine is currently set to. Thanks for your answer. Does that mean the gaming commission can randomly show up one day and test a particular machine on the floor?
Some of that depends on the jurisdiction. But I do know that in Nevada, if a regulator wants to inspect any given machine at any given point, I can't imagine they'd be turned down.
In practice that doesn't really happen. The threat of losing a license is so great that no casino would be interested in pulling shenanigans with a slot machine.
Keep in mind that one of the biggest things a casino needs from players is trust. That's part of why the gaming regulatory bodies are so strong.
The casinos make money based on mathematical odds - the negative effect from losing the trust of players is a great enough threat to keep most everyone honest.
Makes sense, though I wonder how able the vast majority of players are to really calculate the odds they were offered. Is there any such thing as strategy in slots play?
Does it matter how big each bet is or the number of lines played or whatever, in the limit of infinite plays? Pretty much no one can.
I can't, and none of my coworkers can. Not on a slot machine. You can sort of gauge if you look at the payouts screen and compare it with the same game elsewhere.
One may have higher payouts for the same hit. That one would have better odds. Video poker is really the only one that you can reliably confirm odds.
And there you're not playing to win, you're playing to get as close to the payout as possible so you can earn player's club points.
The goal is to rack up comps. The biggest difference between machines is the concept of volatility. Some games have a high volatility, which means you tend to win rarely, but when you do, you win a lot of money.
On a low volatility machine you tend to lose and win steadily. There are some people who believe that if a machine hasn't paid out in a while, then it's due to pay out soon.
That's correct if you're willing to bankroll millions of spins. But in any single spin, the machine is never any more or less likely to pay out than in any previous spin.
I can validate his first sentence. If they walk in and say "Do it. You find a way to make whatever they just said happen. When I worked security, we were very specifically told to 'Verify their badge, make sure they're gaming, and then get the fuck out of their way.
Is this information super secret or can I find the Casino with the best percentage? My "understanding" is that off-strip Casinos in Vegas have better paybacks vs.
It depends on the jurisdiction. In Australia, the percentage must be visible on the machine itself. It's also required that if they advertise a certain percentage, there must be at least one machine set up with that pay table.
It takes a lot of work to find the machines that are set higher. The only thing that you can do is compare the payback percentages. Look at the pays screen and see what a given combo pays.
Compare to another machine with the exact same game - if the percentage is set higher, the pays will be higher. And to respond to the point I missed earlier - downtown and off-strip casinos often do have better paybacks.
But I can't say anything definitive, since it would be a lot of work, and I'm not up for that. How is the random number generation done? Is something like random.
I'd have to see their source code to answer definitively, but I can guess that the answer is no. Most manufacturers actually have people who's sole job is to make sure the RNG random number generator truly is random.
I'd be willing to bet that far more work has been put into slot machine RNGs than random. If a manufacturer ever ended up with an RNG that was only pseudo-random, the consequences would be pretty bad for everyone involved.
It looks like random. ORG have been evaluated by eCOGRA, which is is a non-profit regulatory body that acts as the independent standards authority of the online gaming industry.
For a typical gambling site, eCOGRA will oversee many aspects of its operation, including financial aspects, such as payout percentages.
ORG consistently produced random numbers across scaling intervals and issued a certificate with their conclusion: They don't oversee any casinos or lotteries.
But this is the first time I've ever heard of them, and I'd be willing to bet that almost no one else in the land based gaming industry has heard of them.
Which, again, isn't to say that they aren't honest and legit, but reading through their own website A bit non-specific about everything.
Contrast that with the NGCB website, which publishes their very specific requirements for anyone to read. Well, like I said, they may be legit.
I certainly don't want to disparage their business model. But it's interesting that no one in the industry seems to recognize them. I guess the part I really take issue with is that their requirements and procedures are so vague.
Look at NGCB regs for examples of how things should work. They publish their procedures and requirements for any and everyone to see - and those are what us in the industry must adhere to.
And sorry for being a bit vague - I can't really release details about any specific implementation. How un-vague can you get?
Is there a base seed eg time like 'normal' random number generators, does it use the last number generated, etc.
Even the seed is pretty complex, specifically to avoid ever being duplicated. Repetition may occur, but it must be a natural occurrence.
And it's extremely rare. So the repetition that you're talking about can occur, but can never be repeated. I still think Austin's point stands.
Have your RNG spit out an infinite string of numbers. Surely there will be a sequence of 1 billion sevens in a row, eventually.
And surely this sequence, given that the data is infinite, will be repeated. I'm not going to dispute that. I'm talking about practicality, though.
But even if that sequence is repeated, it would be so rare that no one would notice. In the rng that I use there is a base seed.
The number generated from the seed rotates every 10 milliseconds automatically and rotates when you ask for a number. Every time a game is played the rng is reseeded.
But I was under the impression that a computer can only produce pseudo-random numbers, unless some naturally random seed is used. Do your RNGs use physical characteristics are or are they in software in which case they cant be truly random, only extremely pseudo-random?
I haven't looked at the code, but it has been certified by every gaming board worldwide and everyone seems to be okay with software randomness.
Keep in mind that to keep the odds "true", it doesn't really need to be RANDOM, it just needs to be consistent that the "hit" only comes up 1 time in x.
Do you believe this was possible? I will have to read the book before I can really say whether it's credible or not.
I certainly won't dispute it until I read up on what methods they used. So it's not outside the realm of possibility that they exploited that part of the machine.
I would be amazed if that happened past about or so. One of the machines had a simple bit LFSR, which was trivial to crack. The other used 2 bit LFSR's added together, but they only iterated one of them before each deal, which cryptographically weakens it to basically a bit RNG.
Some time in the 90's they switched to 3 bit RNG's, properly iterated. This one proved impossible to attack, at least with the methods these guys were using at the time.
One of the reasons Mitnick described for this was that the numbers could not be truly random. If that were the case, there could be 10 jackpots in a row.
They needed to be statistically predictable so casino owners wouldn't be open to too much downside. Well, again, that would have had to have been in the very early days of electronic slot machines.
These days machines and software are run through literally millions of test runs before they're even submitted to regulatory agencies for approval.
Any kind of pattern would get detected fairly early on. There's a surprisingly large amount of effort that goes into making sure that random is really random.
The industry and the governing agencies have a vested interest in making sure that slot machines are truly random. Also, for what it's worth, I also work for a major gaming company, and this is surprising to almost everyone , our RNG is software.
And that one core piece of software could destroy your company if it was found to be predictable. There's a reason the RNG gets a lot of attention and oversight.
Are slots and other casino systems all networked up in a way that allows casino management to control them in real time?
Or what can they control? It depends on the casino. The most modern casinos can load a new game and pay table onto a machine remotely.
They cannot, however, interrupt a player. So if the machine is occupied, and they want to change the game, they have to wait until the player has finished and the machine has become idle.
And according to what I read, the machine has to display that they are making changes. In your experience, is this true?
It would be a bad thing if changes are made to the machine without the player being alerted. From what I've seen, though, when a machine is being reconfigured it will go into maintenance mode.
So it ends up being pretty obviously unavailable for play. I occasionally play video poker. On the Jacks or Better game I play, if you get a pair of Jacks or higher it gives you the option to double or nothing.
With this you are given one "random" card, with 4 face down cards. You have to choose one of the face down cards, and if it is higher than the face up card, you double the win.
But what I have always wondered, is if those 4 face down cards are predetermined before I select one of them. Sometimes it seems way too more than a coincidence that the 3 I need to beat, I don't because I hit a 2.
Or something along those lines. I've haven't personally worked on the software for video poker, only slots. But I have talked to some of those guys and have looked at it a bit.
And read the regulations and guidelines My understanding is that in video poker, because it's dealing from a deck, those four cards should be determined and set before the backs are presented to you.
So your choice of cards should really be among 4 predetermined cards. After you select a card, does the machine reveal the other three?
I've never played this variant. As far as video poker goes, the machine is playing no different than a physical dealer would. The payback percentage is set by changing the amount awarded for any particular hand.
So if you spend a while learning about the different games, you can tell which machines are set to a higher payback by looking at the pay table.
Good to know, thanks. Yes it shows the remaining cards afterwards, but I often wonder if all of them were predetermined, or if they were just fucking with me.
The other day I burned through 20 bucks on there. Luckily I noticed the machine next to me, someone had walked away with 1 25cent credit left in it, and I ran that back up to 40 bucks.
Okay, if it shows the remaining cards afterwards, then they were placed and your choice affected the outcome.
If the cards were NOT shown, then your choice didn't affect the outcome. This comes in to play most often during slot machine bonus rounds.
And they were fucking with you. Sounds like you've got optimal play memorized. Hope you've got a club card so you're getting comped on amount bet.
Try to find a place that comps on amount bet, rather than coin in. Man if I ever found any evidence of them doing that, I would have to get their license taken away I don't particular mind that the house always win, but cheating is another thing.
It's not cheating, it's just that your bonus would have been predetermined, and picking between different items on screen is really just eye candy.
There's absolutely no way a casino would use a machine that cheats, and there's no way a manufacturer would sell a machine that cheats.
Both companies know that it would basically shut them down permanently if it happened. To what extent has your programming for players' clubs involved card counters or other advantage players?
Casinos really take card counting personally, but they often forget to wipe out the comps that card counters have earned. Is this an issue you have worked on?
Do you deal with issues having to do with comps e. Most casinos use pit bosses to identify counters. Once they're identified, they're just flagged in the back end system.
There are a couple IAMAs here from counters and it didn't sound like they would try to use club cards while playing. Are you asking about points earned based on play, or about comps given?
It looks like you're asking about comps given. If so, well, once a casino gives something to a player, they can't take it back. Doesn't matter if it's a free meal, a tshirt, a car, or a small pacific island.
Sounds like you guys were pretty on top of the whole counter issue. Makes sense the way you lay it out. Can't imagine a counter would last too long there.
Environment - depends on the department. Dress code - relaxed tshirt and jeans. Work culture - depends on the project. How much do you make?
How many years of software development do you have? Other sectors you've worked in? What kinds of bugs can arise from your systems? Besides tasks surrounding RNG, what exactly is there to do?
Do you write software for new machines? Upgrades for old machines? It seems like once the software goes thru vigorous testing it's ready to go live and the job is done, what more is there to do?
Can you reuse bits and pieces from other systems? You want my earnings? Not going to say. As far as I know, all of us make a decent wage, but nothing spectacular.
OS and IDE depends on the project. For what it's worth, I prefer Python and Django. And I hate Java. Ultimately, they're all just tools - we do the best with whatever environment we have to use.
There isn't really an upgrade path for software. If a new version is released, the earlier software on the machine is wiped out and overwritten completely.
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This question appears to be off-topic. The users who voted to close gave this specific reason: Include attempted solutions, why they didn't work, and the expected results.
Whatever a is it jumps to that case in the switch statement. It looks like the swithc expression is the "actual" slow machine, so you want to put a random int there.
Something along the lines of switch a. Think about how a slot machine works and then look at your code. The slot machine randomly picks a symbol for each spot ie 1 fruit.
In your code you have a case for each fruit. What is happening is you are representing each case with a number. So to determine which case, you need to pick a number.
What number do you pick? Also its good to have different max speeds. Our Slot class will have 4 member functions:.
Initially we create an object for each slot of the slot machine. We pass different values for the max-speed and speed-stepper to the constructor.
This method kicks off the slot and increments the speed at regular intervals. This can be done using setInterval. Once the speed comes below a certain threshold, the final position is calculated for each of the slots based on their current position and the slots are rotated to reach the final position.
Demo You can see the implementation here. The full source code can be viewed at my GitHub repository. I thought this was really cool what you made…..
The best guide I have found is https: I mean I can set when will be the winning combination will occur. Like people will have 3 tries to play this but my App will be the one to decide when the winning combination will occur?
You can predetermine the results initially and finish the slots at desired position to simulate winning. Its really cool though — just wish I had a more relevant site to add it to.
To the commetor who queried if it worked in Firefox — it worked fine for me every time. I never wrote it as an actual game.
You can add some tweaks to increase the chances of winning. Hi Saurabh, Can you please provide a little more details as to how you can increase the odds of winning?
Thanks for this tutorial. Decrease the number of images used. Hi Jerry, I tried reducing the number of images, but am not having any luck in increasing the chances of winning.
Also, when the images reach their final position, I take a look at the elements, and I see things like this:. My question is — how does the number relate to the image?
My image that shows up with that background position is in the array at 0, , , , , and as you can see, putting one image in so many spots was my attempt to increase chances of winning, but it seems to make no difference.
Any advice from you or Saurabh would be greatly appreciated. That is, load 3 or 4 of each image into each slot.
We have started a new start up Clipinmedia focused on developing facebook social games for clients. Our next project is to develop a social game like https: Or javacript will be perfectly fine to work with.
Nice looking slot machine motion. This is a quick fix, there are many changes that could be made for efficiency and to keep up with standards, but I won't go into detail.
As for the under 30 lines requirement, I would start by using only one random generator to generate all 3 fruits in one structure.
Ask yourself, why must you have separate random generators for each fruit? Why a new switch per fruit? One random vs 3 random generators, will produce the same randomness for your fruits.
Java Slot Machine [closed] Ask Question. Corey 19 1 1 1. Why are you all down-voting?