Slot Machine For Visual Basic Using Windows Form

2005-04-05 09:01:28 PM delphi101 I've looked in off-topic and decided I'd better post it here. Is there any information available about creating slot machine games?

It may look like a regular slot machine and play like one, but a video lottery terminal differs quite a bit in terms of how winners are determined.

VLT gaming machines are usually equated more with games like bingo, pull-tabs, scratch-offs, or lotto than they are with slot machines. This is because there are a pre-determined number of winners, and players are competing with each other for a prize rather than against the house. There is also not necessarily a winner in each game.

Best Casino for Live Dealer Games
Accepts all Countries and US States

Video Lottery Terminals (Class II machines)

VLTs are most often found in Indian gaming casinos or “racinos” (location with both a horse racetrack, as well as a casino). Each machine or terminal in a casino is linked together, forcing players to compete against one another for the prize, and with a set number of wins and losses, the group of machines is preprogrammed to payout at specific times.

The only catch for VLT machines is that players must announce their win in order to get the payout because the games are interactive. Although not every game has a winner, the game will be ongoing until a winner is determined.

As indicated by the name, video lottery winners are determined much like a lottery scratch card. Basically, when a game starts on a VLT, the system the machines are connected to randomly chooses a “scratch-off ticket” from those that remain. Once it receives the information regarding the winner, it sends the results to the VLT to reveal the winner, typically in some entertaining way.

Winning at VLT Machines

Obviously, the machine doesn’t have the ability to actually scratch off a ticket, but it does choose the winner from a pool, similar to a lottery ticket. Once all the outcomes in a pool are chosen, the central system receives a new pool.

The payouts can be slightly different on VLTs, as well. According to readybetgo.com, “The final results wouldn’t be noticeably different if the RNG simply picked one number from a group of numbers. Thus the mathematic methods of supplying the decisions in VLTs may be radically different than traditional RNG methods. But in the end, 1 in 10 is still 1 in 10, and 1 in 5,000 is still 1 in 5,000.” The artible goes on to explain that the reason VLTs can be slightly tighter is that they’re offered in areas where there is little competition. In fact, the typical payout is anywhere from 85% to 92%. So, if you’re playing in a casino that offers both VLTs and traditional slots machines, you’re probably better off with the latter.

Slot Machines (Class III)

Slot machines often referred to as “Vegas-style” or traditional slots are the machines you’re probably used to playing. Each traditional slot machine in a casino plays independently from other machines. The only way in which they are linked is usually in terms of the jackpot, but this is only for progressive networks.

Contrary to popular thought, there is no way to know if a certain machine is “hot.” The typical belief is that if a machine has just paid out, you shouldn’t play on it. This is simply not true. Because of the Random Number Generator, each machine has exactly the same likelihood of paying out. Unlike VLTs, slot machines are also not preprogrammed to pay out at any time, so you always have a chance at the jackpot!

When Do You Win?

To put players at ease who may have abandoned a machine in the past only to watch it pay out for the next player, you must understand that RNGs are programmed down to the millisecond, so the odds of winning if you had stayed are low. Because of this, the lever must be pulled at almost the exact time the winning number is generated.

Unlike VLTs, slot machine wins are immediate, and winners don’t have to announce their win to receive a prize. Although, I wouldn’t discourage any hooting and hollering if you’ve just landed a $10,000 jackpot. You earned it.

This is a slot machine that resembles the real slot machines in the casinos. To create the project, you need to insert three image boxes into the form and program them so that they will display a set of three different pictures randomly when the user presses on the spin button. It involves a randomization process. Next, a timer needs to be incorporated into the procedures so that the program can produce animated effects. In addition, you can also insert the Microsoft Multimedia Control so that it can play sounds in synchronization with the spinning of the slot machine as well as when the player hits the jackpot. You can design any interface you like. We have created an interface as shown below:

The Interface

The Video Demo

The Code for Spin Sub Procedure

The three random variables a, b and c will be randomly assigned the values 1, 2 and 3 using the RND function. Based on these three random numbers, three different pictures will be loaded into the three image boxes randomly using the LoadPicture method. Animated effects are created by putting the above procedure under the control of Timer1, which will call the spin procedure after every interval until it fulfills a certain condition. Sounds are also added using the Microsoft Multimedia Control to make the game more realistic and interesting. The amount won is controlled by the If...Then...End If statements

It is important that you define the correct path for the LoadPicture method, otherwise the program will not be able to run. For example, our path is C:VB programImagesgrape.gif, you need to create the necessary folders and have the necessary image file if you wish to copy the program directly. If you place the image file in a differently folder, you need to modify the path accordingly. For example, if your image file is in D:VB programImagesgrape.gif, then you need to modify the LoadPicture method to LoadPicture('D:VB programImagesgrape.gif').

If you wish to use our image files, you can download from the links below: