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Many scripts want to run little bits of code at frequent intervals. For example, a script might update the behavior of a zombie. It needs to update conditions repeatedly, like checking the location of the nearest player.
Today, ROBLOX’s Chief Scientist, Erik Cassel, discusses proper use of the wait function.
The Problem
A very common way to do this in ROBLOX is with the handy “wait” statement. Here is an example:
There is one problem with this code. Can you see it? The wait function takes an optional argument, which is the time that the script should sleep. If you don’t supply an argument, then the function will typically return in 0.03 seconds. That means the script is looking for an enemy to attack 30 times a second! The findClosestEnemy function isn’t cheap. It probably needs to iterate over all the players and find the closest one. That might be fine if you have one zombie in your game, but what about a hoard of 50 zombies? Do you really want 50 zombies rethinking who they will attack 30 times a second? That amounts to 1,500 enemy updates per second.
This isn’t a contrived example. I’ve been analyzing laggy games. A large fraction of them are laggy because of scripts that suck up all the compute time.
Let’s think about zombies for a minute. Zombies are stupid. Once a zombie finds an enemy, he is unlikely to change his mind and go after a new enemy for a while. Let’s make a tiny change to our script:
We supplied a reasonable wait time of five seconds. Once the zombie spots a player, it will go after him for five seconds before looking to see if anybody else is closer. Now our 50-zombie game does 10 updates per second, rather than 1,500.
I have found games that try to wait for 0.0000001 seconds. That means they try to run complex operations 10 million times per second. We may have fast computers these days, but not that fast! These kinds of games suffer from terrible lag.
If your game is laggy, check your script performance. In ROBLOX Studio, there is a great Script Performance panel. Look down the Activity column. It will tell you what percentage of your overall time that a script is taking up. Anything greater than 3% should set off alarm bells.
Better Resuming from a Wait
Another thing to keep in mind is that wait is not guaranteed to return in precisely the time interval you requested. Let’s say your game fills up with 1,000 zombies. Even our optimized scripts might take up a lot of time in aggregate. In that case, ROBLOX will decide that it can’t run all the scripts fast enough, and it will automatically wait longer than requested. We do this because ROBLOX needs to run other processes, like networking, physics and rendering. By “throttling” the script code, we can try to avoid lag.
Let’s write a script that gradually changes the time of day. If you put this script in a game you will see the sun gradually rising:
The script asks to wait for one quarter of a second. However, let’s say that your game is temporarily running out of CPU time. In that case ROBLOX will decide to make your script wait longer than 0.25 seconds, and the sun will rise slower! Here is the solution to the problem:
As stated in the documentation, the wait function returns the actual elapsed time. With that bit of information, we can adjust the time of day accordingly. If the elapsed time is longer than 0.25 seconds, then we’ll skip the time of day forward proportionally.
Lag is often preventable. I’ve found that many games are laggy because of runaway scripts that spend valuable compute time on unnecessarily frequent computation. If you use wait correctly, you’ll be on the way to lag-free game building.
Roblox Driving Empire, previously known as Wayfort during the beta test run, has gotten brand new cars and motorcycles in its latest update. This tier list guide will only focus on the best and fastest cars in the game.
Most top-tier cars in Roblox Driving Empire are quite expensive, but we also have a few choices below that cost a lot less that can still compete against the pricier ones.
S-Tier Car
2021 Samba Jetback
- Top Speed: 308 mph
- Acceleration: 2.4 seconds
- Price: $5,849,900
As of now, the fastest and coolest car in Roblox Driving Empire is the newest 2021 Samba Jetback, which is based on the real life SSC Tuatara, manufactured by Shelby Supercars.
Although the exterior shell of the vehicle looks exactly like its original counterpart, the interior is not as well designed as you would expect. When it comes to performance nothing can beat Jetpack.
During the Drag Race mode the car has shown an outstanding 331 mph record, which is by far the highest you can get in the game at this point. If you steer carefully, you can burn some serious rubber with this thing.
A-Tier Cars
2020 Poison F5
- Top Speed: 301 mph
- Acceleration: 2.2 seconds
- Price: $4,200,000
Henray Poison F5 is a new version of the infamous Poison GT sports car, which is based on real-life Hennessey Venom F5.
This new version is much better in terms of speed and acceleration, but the handling is still quite poor. This means that Poison F5 will be a perfect choice for Highway Race and Drag Race modes, but not for much else.
When driving this car you need to remember that the handling will get more out of control the faster you go. So try to keep it on a straight line as much as you can, and the victory will be yours.
2020 Keoniegg Yesgo
- Top Speed: 302 mph
- Acceleration: 2.5 seconds
- Price: $4,250,000
Yesgo is a high-performance mega car with a twin-turbocharged V8 engine, which allows it to be the second fastest car in the game after Tuatara. But when it comes to acceleration and handling it loses to Poison F5.
The only reason why players would choose Yesgo over Posion is the car design, which introduces high aerodynamic downforce. This allows Yesgo to have a better grip on the road.
Apart from that both A-tier models are equally great in their own way, and cost almost the same amount of money.
B-Tier Cars
Poison GT
- Top Speed: 273 mph
- Acceleration: 2.4 seconds
- Price: $1,400,000
Roblox Vehicle Simulator How To Make It Run Faster Longer
Henray Poison GT may not be the newest car in this roster, but it is undeniably cheap and has terrific speed and acceleration stats for such a small price.
It won't do too well in Cross Country or Circuit Race modes, but it can stand on an equal footing during a Drag Race against such super cars like Veyron, Centenario, Huayra and others.
If you're looking for a cheap highway racer, then this would be an excellent choice.
Virus (Veyron)
- Top Speed: 267 mph
- Acceleration: 2.3 seconds
- Price: $1,640,000
Virus mid-engine sports car is based on none other than Bugatti Veyron, including its remarkable and instantly recognizable exterior design.
This is another cheap counterpart to Poison F5, which has a slightly better acceleration and handling. This alone makes it suitable for other modes rather than just straight-line races, where you can try out more complex stirring techniques.
2020 Voltaic Courser
- Top Speed: 250 mph
- Acceleration: 1.9 seconds
- Price: $5,550,000
Roblox Vehicle Simulator How To Make It Run Faster Run
Although 2020 Voltaic Courser may not be the fastest car in the game, it does have the highest acceleration rate, which gives you a significant boost during the start of any racing match.
This is possible due to the three electric motors (one in the front and two in the rear), which were inspired by the real-life Tesla Roadster electric sports car.
This also means that the car is almost noiseless, which may be a huge attraction point for many players.
These are the best cars in Roblox Driving Empire. For more Roblox tips and tricks articles, be sure to visit our dedicated hub page.