- One of the great things about video poker is that even though it looks like a slot machine, it's NOT a slot machine. Here's why that's great: Slot machines are the only game in the casino that have opaque math behind them. In other words, you have no way of knowing what the odds and/or payouts are on a slots game. Yes, slots have pay tables.
- 2 An example of kinds of slot machine setups (in a casino in Asia) Kinds of slot machines at Yokohama Casino The slot machines at Yokohama Casino will possibly be mainly 3×5 type video slots and some 3×3 types as well, and all models should come with many language options including English, French and Chinese for foreign tourists generally.
Slot machines don't become due for a win when they haven't paid out in a long while, and they also don't become hot and start paying out more. Every spin is like a single coin toss or a single roll of the dice—the outcome is independent of all the outcomes prior to it. The location of the slot machine in the casino matters.
I was bored and that can be a dangerous thing. Like doodling on the phone book while you are talking on the phone, I doodle code while answering questions on DIC. Yeah, it means I have no life and yes it means I was born a coder. During this little doodle I decided to make a slot machine. But not your standard slot machine per say, but one designed a little bit more like the real thing. Sure it could have been done a little more simpler and not even using a Wheel class at all, but what fun is that? In this entry I show the creation of a slot machine from a bit more of a mechanical aspect than a purely computerized one. It should provide a small sampling of classes and how they can represent real life machines. We cover it all right here on the Programming Underground!
So as I have already said, this little project was just something to play around with. It turned out kinda nice, so I thought I would share it. But what did I mean about it being mechanical in nature? Well, if you have ever played a real slot machine, not the digital ones they have in casinos now, you would see a metal case with a series of wheels. Typically it would be three wheels with pictures on them. When you put your money in and pull the handle the wheels would be set into motion. They would spin and then the first wheel would stop, followed by the second and then the third. After they have all stopped, the winnings are determined and you are paid out in coinage or credits.
I thought, why not be a bit mechanical in this slot machine design and create the wheels as a class called 'Wheel' and give it the ability to spin independently of the other wheels? Have the wheel keep track of which picture (or in our case number) is flying by and report the results to the actual slot machine class. I could have done this mechanism without the need of a wheel at all and instead load up an array and have it randomly pick a number from the wheel. Little slimmer, little more efficient but wouldn't show much programming theory.
What do we gain by recreating these Wheel classes and spinning them independently? Well, you gain a slight bit of flexibility. Independently we are able to control the speed of the spinning if we wanted to, we are able to grasp the idea of the wheel as a concept in our mind and manipulate it. We could easily built in features like if the wheel lands on a certain number it will adjust itself. Like some slots in Vegas, if you land on lets say a rocket in the center line, the machine would see the rocket and correct the wheel to spin backwards 1 spot (in the direction of the rocket as if the rocket was controlling the wheel). We could spin one wheel one way and another wheel another. We could inherit from that wheel and create a specialized wheel that does a slew of new different behaviors. All encapsulated into one solid object making the actual Machine class oblivious to the trickery of the wheel itself… encapsulation at its finest!
The machine class we create will contain 3 pointers. Each to one of the wheels. The machine itself will be in charge of a few different tasks. Taking money, issuing and removing credits, determining when to spin, telling each of the wheels to spin and checking our winnings based on some chart we create. It has enough on its plate than worrying about the wheels and reading their values.
So lets start with our Wheel class and its declaration/implementation…
wheel.h
As you can see the wheel itself is not a difficult concept to envision. The bulk of the work is in the read() method. Here we simply read the values from our internal array of integers (the values on the wheel) and return those values as an array of the three integers… representing the visible column. This column will then be loaded into our 2-Dimensional Array back in the Machine class. The 2D array represents the view or screen by which the user sees the results. Remember that the user never gets to see the entire wheel. Only the 3 consecutive values on the face of the wheel.
Here is how it may look in the real world. We have our machine with the three wheels and our 2D array called 'Screen' which acts as our viewing window. Each wheel will report its values and those values will be put into the screen…
Below is our machine class…
machine.h
This looks like a lot of code but really it is not if you look at each function. Most of them are very very simple to understand. We have a spin method which essentially spins each of the wheels, reads their values back from the Wheel class into a pointer (representing each column), then they are loaded into the 2D array one column at a time (our view screen), printed for the user to see the results and lastly the winnings are checked. The checkwinnings() method determines which rows to check based on the amount of the bet. If they chose 1 line, it checks for winning combinations on the middle row only. If they choose 2 lines, it checks the middle and top lines, 3 line bet checks all three horizontal rows, 4 line bet checks the first diagonal as well and 5 line bet checks both diagonals in addition to the lines.
How does it check the lines? Well each line is given to the checkline() helper function which compares the 3 values of the line against an enumerated type of various symbols. Here we are just assigning a symbol against each numbered value to help the programmer determine which numbers correspond to which winning combos. For instance, luckyseven represents the number 3 in the enumeration. So if it runs across a line with 3 number 3s, then it knows it hit the grand jackpot and credits the player 1000. This method makes things easy because if we ever wanted to change the win patterns later, we could change the enum and checkline method to do so. We could also build in multiple types of symbols and even let the user choose what slot machine game they want to go by. It becomes very flexible and is a testament to great design!
Lastly we can put some tests together just to show some the various aspects of how this thing works and how the programmer can use the classes…
slotmachine.cpp
This simply inserts a 5 dollar bill and a coin for good luck. Then bets 5 lines and spins. Despite the outcome we go and bet five lines again and spin once more. Hopefully we win something this time around! But either way, those are the classes for you and I hope you like them. As always, all code here on the Programming Underground is in the public domain and free for the taking (just don't cause a mess in isle 3, I am tired of running out there for cleanup). Thanks for stopping by and reading my blog. 🙂
Computerization and programming have changed the way of our life. For each and every purpose, we have an app/software developed keeping manual efforts at bay and bringing in comfort and ease.
The gaming arena is also experiencing the effect of computerization and programming, and so latest and high on graphics games are developed to amaze the users with their real-like gaming experience.
Amidst this computerization of the gaming arena, some traditional and popular games like Poker have also seen their transition to the e-gaming platform. One amongst this classic game is the slot machine based gambling/casino. Slot machines have been the love of casino players all around the globe.
Now, with advancement in technology, this traditional slot machine based gambling has become more and more attractive and interactive for the users. The programming and coding technologies have accorded an enhanced outlook to the gaming experience.
Similar to other modern day games, slot machine based games also requires programming. Slot Machine Programming is an expert level task that requires bringing on programming efficiency and ability on board. The slot machine programming is done using a microprocessor. Which means, the microprocessor is used to feed the programming and set of instructions to create an enjoyable gaming experience.
The programming is done on the Random Number Generation (RGN) based methodology to generate unique number through random processing on each push of the button. Modern-day slot machines offer many different combinations for winning apart from the ‘three in a row' winning hence, detailed and précised programming (with looping) becomes necessary.
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Slot machine programming (or for that sense any programming) is done based on a defined algorithm, or we can say a limited set of a plan. Slot machine algorithm calls for Random Number Generation (RNG) on each play of the button on the slot machine.
The algorithm involves proper structurization of the flow of instruction set whereby each and every operation and its expected output are coded as a part of operations in the loop. Animation design, pay line setting, setting up of winning combinations, etc., are some of the crucial elements wherein the algorithm provided a defined path for execution of the instructions. Thus, to develop an effective slot machine game there is a need for proper slot machine algorithm to supplement it in all the aspects related to development.
In general terms, we can say that the slot machine algorithm is a kind of design blueprint based on which the execution and programming are done, and the desired gaming software, as well as app, is developed. To have a clear and defined algorithm is what that most of the slot machine game developers require when they venture into developing an ecosystem.
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Winning The Jackpot At The Slot Machine Is An Example Of A Dependent Variable
