Binary Options Strategy - All Trading Strategies Reviewed

Forex Hydra Strategy Forex And Binary Options Indicator

Forex Hydra Strategy Forex And Binary Options Indicator submitted by mytutorialtime to fxboshop [link] [comments]

Forex Renko Zoomer Strategy Forex And Binary Options Indicator

Forex Renko Zoomer Strategy Forex And Binary Options Indicator submitted by mytutorialtime to fxboshop [link] [comments]

Forex Stryder Strategy Forex And Binary Options Indicator

Forex Stryder Strategy Forex And Binary Options Indicator submitted by mytutorialtime to fxboshop [link] [comments]

Forex Pogo Symphonie Strategy Forex And Binary Options Indicator

Forex Pogo Symphonie Strategy Forex And Binary Options Indicator submitted by mytutorialtime to fxboshop [link] [comments]

Binary Strategy Elite Binary Option Indicator

Binary Strategy Elite Binary Option Indicator submitted by mytutorialtime to fxboshop [link] [comments]

90% WIN HIGH LOW Binary.com bot Free Download | Winning Strategies Binary options 2018 CREATE BOT BINARY.COM USING EMACROSS Exponential Moving Average Smart Indicators JB88 2019 https://www.youtube.com/watch?v=Pt5qOBVKMO8

90% WIN HIGH LOW Binary.com bot Free Download | Winning Strategies Binary options 2018 CREATE BOT BINARY.COM USING EMACROSS Exponential Moving Average Smart Indicators JB88 2019
https://www.youtube.com/watch?v=Pt5qOBVKMO8
submitted by phutannguyen to u/phutannguyen [link] [comments]

90% WIN HIGH LOW Binary.com bot Free Download | Winning Strategies Binary options 2018 CREATE BOT BINARY.COM USING EMACROSS Exponential Moving Average Smart Indicators JB88 2019 https://www.youtube.com/watch?v=Pt5qOBVKMO8

90% WIN HIGH LOW Binary.com bot Free Download | Winning Strategies Binary options 2018 CREATE BOT BINARY.COM USING EMACROSS Exponential Moving Average Smart Indicators JB88 2019 https://www.youtube.com/watch?v=Pt5qOBVKMO8 submitted by phutannguyen to u/phutannguyen [link] [comments]

Trading Discussion • Binary Options Digits Over Working Strategies 10usd in Seconds Using Indicators

submitted by btcforumbot to BtcForum [link] [comments]

90% to 100% profit in Binary option trading World most powerfull indicator spider indicator for 1 min time frame . 60 seconds binary options strategy - make money with 60 seconds options

submitted by mizanurmemory to binaryoption [link] [comments]

Binary Option trading best winning BSP strategy with special indicator/IQ Option

Binary Option trading best winning BSP strategy with special indicatoIQ Option submitted by BS_Protocol to binary_options [link] [comments]

Undefeated roulette tricks vs forex?

i'm new in this forex stuff (not even starting yet) & first time visiting Forex. But i've read that forex basically gambling (guessing either it goes up or down, and you got previous data as reference). I'm also read about foolproof gambling tricks that works in real life roulette. Basically it goes like this :
  1. bet $1 on red - if you win, repeat step 1.
  2. if you lose, bet $3. if you win, repeat step 1.
  3. if you lose again, bet $6. if you win, repeat step 1.
  4. if you lose again, bet $14. if you win repeat step 1.
  5. if you lose again, bet $31. if you win, repeat step 1
so, can this be apply on forex trading? (there's lot ads about forex trading apps, thinking to try it) can't profit big, but seem cant lose either. might be a good strategy. any thought?
edit 1 : what i mean in this forex is binary options, which some forex trading apps operates.
edit 2 : it takes 5 unlucky trading before $55 account blown off. is that really common to get 5 unlucky trading in a row?
edit 3 : here's the math (cnp from reply)
some forex apps (like expert option or olymp trade) operate on binary option (this is unregulated securities?) where usually they give 80% return on trade. the math goes like this :
  1. $1 trade and win = $0.80 profit
  2. lose then $3 trade and win = $2.4 - $1 (lose) = $1.4 profit
  3. lose then $6 trade and win = $4.8 - $4 (lose) = $0.8 profit
  4. lose then $14 trade and win = $11.2 - $10 (lose) = $1.2 profit
  5. lose then $31 trade and win = $24.8 - $24 (lose) = $0.8 profit
edit 4 : some reply said **binary options type forex trading apps** are scam & fraud. bummer. maybe trading via smartphone isnt easy as i thought.
edit 5 : still, add some ability to reading indicator & chart could help avoiding 5 unlucky trading in a row. damn, if i'm a programmer, i'll make a trading bots based on this idea xD

submitted by Nam3AlreadyTaken to Forex [link] [comments]

Forex Signals Reddit: top providers review (part 1)

Forex Signals Reddit: top providers review (part 1)

Forex Signals - TOP Best Services. Checked!

To invest in the financial markets, we must acquire good tools that help us carry out our operations in the best possible way. In this sense, we always talk about the importance of brokers, however, signal systems must also be taken into account.
The platforms that offer signals to invest in forex provide us with alerts that will help us in a significant way to be able to carry out successful operations.
For this reason, we are going to tell you about the importance of these alerts in relation to the trading we carry out, because, without a doubt, this type of system will provide us with very good information to invest at the right time and in the best assets in the different markets. financial
Within this context, we will focus on Forex signals, since it is the most important market in the world, since in it, multiple transactions are carried out on a daily basis, hence the importance of having an alert system that offers us all the necessary data to invest in currencies.
Also, as we all already know, cryptocurrencies have become a very popular alternative to investing in traditional currencies. Therefore, some trading services/tools have emerged that help us to carry out successful operations in this particular market.
In the following points, we will detail everything you need to know to start operating in the financial markets using trading signals: what are signals, how do they work, because they are a very powerful help, etc. Let's go there!

What are Forex Trading Signals?

https://preview.redd.it/vjdnt1qrpny51.jpg?width=640&format=pjpg&auto=webp&s=bc541fc996701e5b4dd940abed610b59456a5625
Before explaining the importance of Forex signals, let's start by making a small note so that we know what exactly these alerts are.
Thus, we will know that the signals on the currency market are received by traders to know all the information that concerns Forex, both for assets and for the market itself.
These alerts allow us to know the movements that occur in the Forex market and the changes that occur in the different currency pairs. But the great advantage that this type of system gives us is that they provide us with the necessary information, to know when is the right time to carry out our investments.
In other words, through these signals, we will know the opportunities that are presented in the market and we will be able to carry out operations that can become quite profitable.
Profitability is precisely another of the fundamental aspects that must be taken into account when we talk about Forex signals since the vast majority of these alerts offer fairly reliable data on assets. Similarly, these signals can also provide us with recommendations or advice to make our operations more successful.

»Purpose: predict movements to carry out Profitable Operations

In short, Forex signal systems aim to predict the behavior that the different assets that are in the market will present and this is achieved thanks to new technologies, the creation of specialized software, and of course, the work of financial experts.
In addition, it must also be borne in mind that the reliability of these alerts largely lies in the fact that they are prepared by financial professionals. So they turn out to be a perfect tool so that our investments can bring us a greater number of benefits.

The best signal services today

We are going to tell you about the 3 main alert system services that we currently have on the market. There are many more, but I can assure these are not scams and are reliable. Of course, not 100% of trades will be a winner, so please make sure you apply proper money management and risk management system.

1. 1000pipbuilder (top choice)

Fast track your success and follow the high-performance Forex signals from 1000pip Builder. These Forex signals are rated 5 stars on Investing.com, so you can follow every signal with confidence. All signals are sent by a professional trader with over 10 years investment experience. This is a unique opportunity to see with your own eyes how a professional Forex trader trades the markets.
The 1000pip Builder Membership is ordinarily a signal service for Forex trading. You will get all the facts you need to successfully comply with the trading signals, set your stop loss and take earnings as well as additional techniques and techniques!
You will get easy to use trading indicators for Forex Trades, including your entry, stop loss and take profit. Overall, the earnings target per months is 350 Pips, depending on your funding this can be a high profit per month! (In fact, there is by no means a guarantee, but the past months had been all between 600 – 1000 Pips).
>>>Know more about 1000pipbuilder
Your 1000pip builder membership gives you all in hand you want to start trading Forex with success. Read the directions and wait for the first signals. You can trade them inside your demo account first, so you can take a look at the performance before you make investments real money!
Features:
  • Free Trial
  • Forex signals sent by email and SMS
  • Entry price, take profit and stop loss provided
  • Suitable for all time zones (signals sent over 24 hours)
  • MyFXBook verified performance
  • 10 years of investment experience
  • Target 300-400 pips per month
Pricing:
https://preview.redd.it/zjc10xx6ony51.png?width=668&format=png&auto=webp&s=9b0eac95f8b584dc0cdb62503e851d7036c0232b
VISIT 1000ipbuilder here

2. DDMarkets

Digital Derivatives Markets (DDMarkets) have been providing trade alert offerings since May 2014 - fully documenting their change ideas in an open and transparent manner.
September 2020 performance report for DD Markets.
Their manner is simple: carry out extensive research, share their evaluation and then deliver a trading sign when triggered. Once issued, daily updates on the trade are despatched to members via email.
It's essential to note that DDMarkets do not tolerate floating in an open drawdown in an effort to earnings at any cost - a common method used by less professional providers to 'fudge' performance statistics.
Verified Statistics: Not independently verified.
Price: plans from $74.40 per month.
Year Founded: 2014
Suitable for Beginners: Yes, (includes handy to follow trade analysis)
VISIT
-------

3. JKonFX

If you are looking or a forex signal service with a reliable (and profitable) music record you can't go previous Joel Kruger and the team at JKonFX.
Trading performance file for JKonFX.
Joel has delivered a reputable +59.18% journal performance for 2016, imparting real-time technical and fundamental insights, in an extremely obvious manner, to their 30,000+ subscriber base. Considered a low-frequency trader, alerts are only a small phase of the overall JKonFX subscription. If you're searching for hundreds of signals, you may want to consider other options.
Verified Statistics: Not independently verified.
Price: plans from $30 per month.
Year Founded: 2014
Suitable for Beginners: Yes, (includes convenient to follow videos updates).
VISIT

The importance of signals to invest in Forex

Once we have known what Forex signals are, we must comment on the importance of these alerts in relation to our operations.
As we have already told you in the previous paragraph, having a system of signals to be able to invest is quite advantageous, since, through these alerts, we will obtain quality information so that our operations end up being a true success.

»Use of signals for beginners and experts

In this sense, we have to say that one of the main advantages of Forex signals is that they can be used by both beginners and trading professionals.
As many as others can benefit from using a trading signal system because the more information and resources we have in our hands. The greater probability of success we will have. Let's see how beginners and experts can take advantage of alerts:
  • Beginners: for inexperienced these alerts become even more important since they will thus have an additional tool that will guide them to carry out all operations in the Forex market.
  • Professionals: In the same way, professionals are also recommended to make use of these alerts, so they have adequate information to continue bringing their investments to fruition.
Now that we know that both beginners and experts can use forex signals to invest, let's see what other advantages they have.

»Trading automation

When we dedicate ourselves to working in the financial world, none of us can spend 24 hours in front of the computer waiting to perform the perfect operation, it is impossible.
That is why Forex signals are important, because, in order to carry out our investments, all we will have to do is wait for those signals to arrive, be attentive to all the alerts we receive, and thus, operate at the right time according to the opportunities that have arisen.
It is fantastic to have a tool like this one that makes our work easier in this regard.

»Carry out profitable Forex operations

These signals are also important, because the vast majority of them are usually quite profitable, for this reason, we must get an alert system that provides us with accurate information so that our operations can bring us great benefits.
But in addition, these Forex signals have an added value and that is that they are very easy to understand, therefore, we will have a very useful tool at hand that will not be complicated and will end up being a very beneficial weapon for us.

»Decision support analysis

A system of currency market signals is also very important because it will help us to make our subsequent decisions.
We cannot forget that, to carry out any type of operation in this market, previously, we must meditate well and know the exact moment when we will know that our investments are going to bring us profits .
Therefore, all the information provided by these alerts will be a fantastic basis for future operations that we are going to carry out.

»Trading Signals made by professionals

Finally, we have to recall the idea that these signals are made by the best professionals. Financial experts who know perfectly how to analyze the movements that occur in the market and changes in prices.
Hence the importance of alerts, since they are very reliable and are presented as a necessary tool to operate in Forex and that our operations are as profitable as possible.

What should a signal provider be like?

https://preview.redd.it/j0ne51jypny51.png?width=640&format=png&auto=webp&s=5578ff4c42bd63d5b6950fc6401a5be94b97aa7f
As you have seen, Forex signal systems are really important for our operations to bring us many benefits. For this reason, at present, there are multiple platforms that offer us these financial services so that investing in currencies is very simple and fast.
Before telling you about the main services that we currently have available in the market, it is recommended that you know what are the main characteristics that a good signal provider should have, so that, at the time of your choice, you are clear that you have selected one of the best systems.

»Must send us information on the main currency pairs

In this sense, one of the first things we have to comment on is that a good signal provider, at a minimum, must send us alerts that offer us information about the 6 main currencies, in this case, we refer to the euro, dollar, The pound, the yen, the Swiss franc, and the Canadian dollar.
Of course, the data you provide us will be related to the pairs that make up all these currencies. Although we can also find systems that offer us information about other minorities, but as we have said, at a minimum, we must know these 6.

»Trading tools to operate better

Likewise, signal providers must also provide us with a large number of tools so that we can learn more about the Forex market.
We refer, for example, to technical analysis above all, which will help us to develop our own strategies to be able to operate in this market.
These analyzes are always prepared by professionals and study, mainly, the assets that we have available to invest.

»Different Forex signals reception channels

They must also make available to us different ways through which they will send us the Forex signals, the usual thing is that we can acquire them through the platform's website, or by a text message and even through our email.
In addition, it is recommended that the signal system we choose sends us a large number of alerts throughout the day, in order to have a wide range of possibilities.

»Free account and customer service

Other aspects that we must take into account to choose a good signal provider is whether we have the option of receiving, for a limited time, alerts for free or the profitability of the signals they emit to us.
Similarly, a final aspect that we must emphasize is that a good signal system must also have excellent customer service, which is available to us 24 hours a day and that we can contact them at through an email, a phone number, or a live chat, for greater immediacy.
Well, having said all this, in our last section we are going to tell you which are the best services currently on the market. That is, the most suitable Forex signal platforms to be able to work with them and carry out good operations. In this case, we will talk about ForexPro Signals, 365 Signals and Binary Signals.

Forex Signals Reddit: conclusion

To be able to invest properly in the Forex market, it is convenient that we get a signal system that provides us with all the necessary information about this market. It must be remembered that Forex is a very volatile market and therefore, many movements tend to occur quickly.
Asset prices can change in a matter of seconds, hence the importance of having a system that helps us analyze the market and thus know, what is the right time for us to start operating.
Therefore, although there are currently many signal systems that can offer us good services, the three that we have mentioned above are the ones that are best valued by users, which is why they are the best signal providers that we can choose to carry out. our investments.
Most of these alerts are quite profitable and in addition, these systems usually emit a large number of signals per day with full guarantees. For all this, SignalsForexPro, Signals365, or SignalsBinary are presented as fundamental tools so that we can obtain a greater number of benefits when we carry out our operations in the currency market.
submitted by kayakero to makemoneyforexreddit [link] [comments]

Guide to 6 Battlecast - Breaking out of the Big 3

Hi all,
It's no secret that the meta is rather stale with most people going for Vayne, Jinx, and Riven comps. In almost every game I play, I don't have a lot of success playing meta and usually prefer to find weird anti-meta/off-meta picks. I got really tired of playing one of the big three so started playing Mech to limited success. Then I started 6 Battlecast and climbed from ~70 LP Masters to now 320 LP (though I played other comps too in this climb). Here are my Battlecast stats below from about 11 games played.
https://imgur.com/a/nMYgpBt
https://lolchess.gg/profile/na/sakuchan39
Match History
This is my first guide written so let me know if there is anything I can improve on.
Why play 6 Battlecast
I think its a decently strong comp for climbing purposes only. As you can see, I have a really high top rate but really low win rate with this comp. To be honest, it is a bit player diff since this set I have had a low win rate in general. I think the comp is rather fun to play to see all of the battlecast procs, and is also easy due to how straightforward 6 trait comps are in general.
Pros
Cons
Early Game
The general indicators to play 6 battlecast are early upgrades to Illaoi, Nocturne, and components for Kogmaw. Kogmaw absolute core item is Red Buff and needs one of Shiv or Runaan's Hurricane. I prio Bow on first carousel because it can be either RH or Shiv, but I've seen ideas of Vest prio for Red Buff. If you get good items, but no upgrades, it may be worth it to lose streak early for carousel priority, and to stay lower level to complete Illaoi and Nocturne upgrades. Here are some early game boards.
Early Kog
Infil Open
In Early Kog opener, Lucian is replaceable to hold Kog items, or if early Ezreal then Graves can hold Kog items. Blitz can replace Malphite. Play what makes sense in the context of your game.
Mid Game
The biggest spike is at level 6 and getting 4 battlecast, 2 chrono, 2 blaster with one core item on Kogmaw. Until you get there, just play whatever you have that is strongest. Again, the purpose of this comp is to win streak. As soon as I can put in 4 battlecast, I level to 6. I avoid aggressively leveling to 7 as I like to stay at 6 for increased chances of upgrading Kogmaw. Stage 4-1 is always a level 7 and then roll an appropriate amount of gold to maintain econ while upgrading your board. Since this board is pretty self-explanatory, look to snipe carries with Blitz/Noc to cheese out wins. If you can't hit these units, or have bad items at this stage, look to pivot out. I pivot to Bang Bros (shares Runaans as core item), Jinx (if high roll early Jinx), or even once Mech (had really bad items). In the mid-game, you should also look to start building Urgot items (GA and mana items) as well has hopefully completing an Ionic Spark for Illaoi. GA is really good on Urgot to trade 1 for 1 in the endgame (saving health) as well as stalling for tie breakers.
Mid-game Board
End-game
Ideally, by the time it is time to level to 8 (between stage 4-3 to 5-1), you'll have generated a 50 health lead over the 7th and 8th place people. Now, the goal is to complete the trait with Viktor and Urgot to try and survive to 9. Until you hit these units, splashing traits like Mystic (Karma/Soraka/Lulu) or Infil (Fizz/Ekko) or front line (Gnar) are great to help you survive and can hold Urgot items. Similar to mid-game, you are looking to cheese out wins with Blitz/Infil/Urgot. Urgot targets the furthest unit in his range which is 3 hexes. Once you have hit 6 Battlecast, look to go 9 to add in Mystic/Asol/Ekko/any other broken unit. Battlecast matches up really bad against Sorcs so Mystic is usually my go to since it helps against Mech and Jinx.
End-game Board
Other Notes
I haven't played that many games with Battlecast, but the results have been very positive so far. Hopefully, this will increase the flavor of your games in the last few days of this flavorless meta. Let me know if there's anything I can improve in my guide; I realize I don't go over general Econ strategies or flex options. I think there's lots of good information in high-elo streamers on economy vs aggressive leveling. I find my playstyle to try and balance both but leaning more towards econ is king. I'll answer as many questions as I can below.
submitted by EverythingOP to CompetitiveTFT [link] [comments]

Signals for binary options | Binary Options Signals

Signals for binary options | Binary Options Signals
Adaptive - The adaptive algorithm uses statistical analysis of historical data. In contrast to the classical signals where the signal is given by certain conditions, within the adaptive algorithm were analyzed each candle in history is evaluated, this is often an equivalent if the signals got every minute or 5 minutes counting on the expiration time. Thus, the adaptive strategy shows the foremost favourable moment for entering the market.
Trending - the subsequent technical indicators are wont to generate signals
It is possible to use any conditions for the formation of signals, except for the foremost part, all of them give signals on the brink of one another . If you've got interesting suggestions on adding signal algorithms, write to [email protected]. For us, it doesn't matter how the signal is made - signal power and heatmaps are going to be calculated automatically as soon as enough statistical data is acquired (at least 2000 signals)
Account types
Free - gives you access to all or any signals and extra statistics (power&heatmaps) for two random assets.
Pro - account give subsequent additional possibilities -
Signal power for all assets
Signals for binary options, Best binary options signals, Free Binary Options Signals, Binary Options Signals, binary signals, binary options signals software
Remove Ads
You can add Any Broker to vfxAlert app brokers list HeatMaps - automatically statistic of profitable signals with depends on current indicator values Signals filter - comfort tool to filtered signals Signals subscriptions - you receive signals by email or SMS Extended statistics

https://preview.redd.it/cyooh3bzzvp51.png?width=785&format=png&auto=webp&s=57ac3f7dbda59828496f7bc88b9f58289005f9a5
submitted by vfxAlert3 to u/vfxAlert3 [link] [comments]

vfxAlert - Signals for binary options

vfxAlert - Signals for binary options
vfxAlert it's a tool for a binary options traders which they will use in their own trading strategies. Using vfxAlert assumes that the users are conversant in the essential principles of the forex market. and that they understand the principles of technical analysis and statistical methods. There are two main ways the way to use vfxAlert:
Create a trading strategy supported signals of vfxAlert. Using adaptive algorithm for confirmation signals of existing trading strategy. Especially For Beginners Most of you think that binary options it's easy, that's absolutely wrong. Please feel the difference between easy to trade and simply earn money. Binary options are easy to trade - that's true...
But successful trading requires discipline and strict compliance with the principles of the trading strategy.
It's are going to be very difficult to know what exactly vfxAlert propose and the way to use of these statistical data. Our recommendation is to use free signals within the free version and learn technical analysis and statistical principles.
Trade 2 hours per day less . Trade at an equivalent time a day . Trade long-term signals. (Min. 5 min expiration time) Learn about assets what you getting to trade. How price moves in several trading sessions. See how trend influence on signals profitable. See how heatmaps&power influence on signals profitable. Analyse your trading statistics. Trade on demo-account. After one month you'll feel the market and possible you'll be ready to create your first trading strategy.
Signals for binary options, Best binary options signals, Free Binary Options Signals, Binary Options Signals, binary signals, binary options signals software
!Important: Signals aren't a recommendation for action. Signals are the results of marketing research on a specific algorithm, a trader has got to understand how signals are formed, and what's current market tendencies to form the proper decision.

Signals for binary options
!Important: vfxAlert don't offer trading strategies. vfxAlert offer signals and real-time statistics counting on current indicators values. See below:
The trading strategy may be a system of rules, on the idea of which the trader makes his own decisions. Such a system is made only on the idea of individual trading experience, gleaned knowledge and purchased skills. The strategy allows a deep understanding of the structure of the market and therefore the mechanisms of its operation, therefore, the exchange player makes decisions supported the present situation. On the idea of a private strategy, a trader can develop several trading systems and use them counting on market conditions. The strategy always takes under consideration fundamental factors, statistical data, also because the basic postulates of risk and money management.
submitted by vfxAlert3 to u/vfxAlert3 [link] [comments]

THE SEARCH FOR THE GREATEST SWITCH SHMUP: EPISODE 28 – Raiden V: Director’s Cut

Before I begin, I just want to remind everyone that all of my reviews can be found at my site: www.azormx.com. I tried to keep it as minimalist as possible, and it doesn't have any add or any other intrusive elements, so the content is king. Do check it out, as reviews are usually live there before I publish them elsewhere. Any way, on to the review!

The shmup genre hasn’t been a mainstream genre in a long time. To be honest, I don’t think it ever was, even during the arcade days. While we certainly don’t have a shortage of shmups, let alone new release, they usually come from smaller teams. Indies have taken it upon themselves to become a guiding light for all of us. Their creations have been nothing short of amazing! However, we don’t really have anything we could call a “AAA” shmup. We do seem to have the next closest thing: Raiden.
Developer: Moss Co.
Platform: Nintendo Switch
Release date: Jul 25, 2019
Price: $29.99
Tate: Unfortunately… no. This really needed to have TATE
Raiden V: Director’s Cut is a vertical shmup set in a fictional but real world. It claims to be the original bullet-hell, and after playing it extensively I gotta say that I agree. Raiden V features some intense air combat, coupled with giant bosses and some jaw-dropping transitions between areas.

THE GREAT INTRO CHECKLIST

Right out of the gate, what caught my attention was the intro. The best way I can put this is that it has everything great about shmups in a short video. It has a great track, it has giant enemies, it has ships and it even has pieces of lore I do not understand! Simply amazing!
Most importantly, it is a very accurate portrayal as to what you should expect from the game. Unlike other shmups, Raiden goes all out in the presentation department, with the story taking a mayor role. Another way I can put this, is that it certainly feels like a considerable effort was placed in every element of the game. Raiden V features a level of polish that very few shmups can claim to have.

WELCOME TO THE CUSTOMIZATION STATION

One of Raiden’s strength is the amount of customization you have available for your ship. At the beginning of the game, you can choose between one of 3 different ships: Azuma, Spirit of Dragon and Moulin Rouge. Each of these ships has different stats in terms of attack, defense and speed. They also have their own sub-shot which is always firing along with your main cannon.
On top of selecting a ship, you can arm yourself with 3 out of 9 different weapons. Those 9 weapons are grouped into 3 categories: Vulcan, Laser and Plasma. You can pick, or rather you must pick 1 for each category. The result is a combat style that is unique to you.
During your play throughs, you will encounter several power-up orbs. These orbs will power up each of your weapons up to 10 times! Each of these orbs can be either red, blue or purple depending on the weapon it powers up. The orbs cycle the colors, with an outer dot indicating a timer until it changes colors. This allows you to control which weapon you want to power up, giving you the flexibility to pick your own style or choose a weapon for the occasion.
The best part is that absolutely no power-ups are lost upon death! This means that you are free to retry to your heart's content and play at your own pace. Raiden won't punish you or set you up for failure with an unrecoverable situation.
I didn’t put too much attention into weapon selection at first. I figured it wouldn’t be too relevant, as I would probably just play the entire game with a single weapon, but the advanced scoring mechanics and the rank system were quick to make me second guess my decision.

ACE PILOT

At the core of Raiden V, there are 2 main systems to be aware of: your rank and your flash level. Both of them measure your combat capabilities, although in different ways. Your flash point gauge is a score multiplier that tracks how fast you defeat your enemies. By defeating enemies as soon as possible after spawning, you can earn higher multipliers to increase your flash gauge. By having quick kills, you can raise it to higher levels to increase your score. Your rank, on the other hand, only concerns itself with how many enemies you’ve defeated.
Your rank doubles as the deciding factor of which path you will be taking. Raiden features branching paths with an A, B, C or S version of each stage. Depending on your total destruction rate, you will either move up or down in rank after a stage. While I do not know the exact numbers, I believe having more than 98% destruction rate will increase your rank, 90 – 98% will keep it as is and <90% should decrease your rank. S rank stages are presumably harder than A/B/C stages, with C being the lowest.
Apart from having a higher score and challenging yourself with the difficulty, the importance of S rank is getting the true ending. In order to truly watch the ending of the game, you need to reach the final stage on S rank using a single credit. You also need to power up your 3 weapons to level 10. Once you meet those conditions, you will be able to challenge the final boss. Alternatively, you could just fulfill the level 10 weapons condition to fight the true final boss.

THE BEST CHEERLEADER

A new addition to Raiden V is the cheer system. By accomplishing certain in-game milestones like a certain number of enemies destroyed, you will get an achievement. These achievements are broadcasted to any players connected to the leaderboards. They can then “cheer” on your achievement to increase your cheer gauge. This goes both ways, as you can also cheer the achievements of your fellow Raiden players.
Once the cheer gauge is full, you can unleash it to clear the screen and gain a drastically stronger sub-shot. Think of it as a devastating bomb, only more devastating and easier to fill. It clears screens and decimates even the bosses.
Perhaps many people won’t think too much of it, but I found it really interesting to know that there’s someone on the other side celebrating my achievements. Likewise, there were times where I left my game on pause to do other stuff, but held on to my controller to provide support for my comrades.

SWIFT DESTRUCTION

Everything I’ve mentioned before plays out in the general strategy of the game. Assuming you want to get the best results, you need to know where to hit and how to hit hard. For the untrained eye, most shmups just look like games where you fire away with complete disregard and hope the enemy dies. This is definitely not the case in Raiden.
In order to succeed, you must be able to find your rhythm and read the stage. Learn the enemy formations and strategize the quickest kills. Be there before the enemy arrives and take them down before they realize what hit them. If you want to face the true final boss, then you must also learn to juggle your weapons and find the moments to upgrade them. Maxing a weapon and then switching is a recipe for disaster, as you don’t want to be on the later stages with a level one weapon and risk your flash level or destruction rate. With so many weapons and ship types, your strategy to succeed will be unique to you!

LORE GALORE

One of the main selling points, at least per the game itself, is the story. Raiden V features an extensive story that is fully voiced and occurs as you play the game. This story elements come as the prologue and epilogue scenes, as well as all the events happening mid stage.
As you fly your way to the levels, characters will be advancing the story by having conversations and narrating the current events. The dialogue is available on one of the gadgets located on the right side of the screen. You can read anything you might have missed and even pause to read the on-screen log of events (up to a certain number of events, as the log scrolls to open way for new text).
As for my opinion of the story, I have absolutely no idea of what happened during the game. I played my fair share of runs, but I found it next to impossible to focus on the dialogue while trying my hardest to survive. The voice acting would have been my saving grace, but I found the sound mixing to be the opposite of ideal for listening to dialogue. I even tried lowering the sound effects and BGM to see if I could focus on dialogue to no avail.
The text is also incredibly small when playing on docked mode. It gets even worse when playing handheld.

THE WORST CHEERLEADER

Out of all the voices, Eshiria’s was the one who got on my nerves the most at the beginning. Other than having her role as navigator on the plot, she also critiques your gameplay. In-between stage scenes, she will provide commentary describing your gameplay. She will be quick to point out if you did well, but also if you did poorly. On my early runs, when I was still learning, it would tilt me to listen to her complaining to me about stats I did not understand.
And perhaps, a huge part of my problems was a lack of understanding of the game mechanics. I listened to her complain about my destruction rate without knowing it was about my rank. She also complained about destruction speed without me knowing it was about the flash point.
The problem is that the game never bothered explaining any of its mechanics to me. I really looked around for some sort of tutorial to no avail. I had to resort to 3rd party resources. While that isn’t uncommon, I really don’t like games with obscure mechanics that can’t be discerned in-game.
Once I got better and consistently reach the S levels, I finally started to value her advice. Of course, I wouldn’t count on everyone reaching the same enlightenment as I did. In my opinion, her comments would more often than not add insult to injury. Once again, it’s not really the commentary, it’s the fact that none of what she said made practical sense until I started digging on the wiki.

GADGETS AND THE SCREEN REAL ESTATE

Perhaps the worst omission from Raiden V is the lack of a TATE mode. Vertical shooters don’t really have an excuse to do this, with the existence of add-ons like the flip grip or rotating monitors. Instead, Raiden decided to make the most out of the free space and add several gadgets.
In standard fashion, these gadgets will keep your stats like score, flash level, the dialogue and even hi-score statistics. Your left gadget can even be cycled between the score chart and cheer notification, in-game tips and global statistics. Out of those, the tips are definitely the winners. They do give some important advice, such as staying on top of the guns of the first boss to avoid damage.

NOT A FRIENDLY NEIGHBORHOOD

Every stage is divided into smaller scenes. These scenes serve as a way to catch your breath and tally your score. There’s even a nifty “restart scene” option that allows you to replay a scene. Choosing to restart will deny you the option to upload your score to the leaderboard, but serves as a great way to practice or even “fix” a run to so can get to the true ending.
Every once in a while, the action will pan out and open the way to a bigger stage, with you looking smaller in comparison. I admire the grandioseness of the resulting scenes, but they were also quite impractical. Think about your weapons, the destruction rate and the flash gauge. An extended stage means longer travel distances from side to side. Having a bigger stage means you move slower, which reduces the pacing of the game to a crawl. Reaching enemies quickly becomes a struggle. Worst yet, I’ve counted times where it took me whopping 5 seconds to go from side to side of the stage.

THE OG BULLET HELL

Despite all the fun of blasting enemies quickly to gain flash levels, I gotta say that I found the combat, specifically the bullets, to be lacking in grace. For a game that’s the original bullet hell, most enemy volleys feel like bullet showers. There’s no finesse in them, just a bunch of bullets moving towards you. Dodging them isn’t fun, it’s survival. The problem only gets worse in higher difficulties where the bullets just go faster.
Not all patterns are as bad though. While the vast majority will be just a bunch on increasingly faster bullets thrown at you, some exceptional patterns will show from time to time. As a result, fights tend to be very hit or miss, with both hits and misses being on their respective extremes.
What certainly doesn’t help is that the bullets are very hard to see. As pretty as the backgrounds might be, they are very busy and the quick motion makes them into a blur. Bullets don’t have their characteristic outlines or color palettes to become distinguishable. Some even blend with your own vulcan. The result is a lot of cheap kills caused by intentional obfuscation. It this was their intention, then perhaps I’m being too harsh, but you know visibility is usually one of my pet peeves in shmups.

REPLAYABILITY AND LONGEVITY

As far as game length goes, I consider Raiden V to be one of the longer ones. I was surprised after my first run of the game, as it took me 50+ minutes to complete the campaign. Usually, my baseline for shmups is around half an hour, which made this one almost twice as long. While I’m not fond of longer campaigns, I know a lot of people would certainly be glad to know there is plenty of content.
Of course, playing through the campaign isn’t enough to view the entire game. If you recall, most stages have 4 versions of themselves. Those versions are separated by the ranks: S/A/B/C. This means you would need at least 4 runs to see everything the game has to offer. There’s also 6 different endings to uncover.
Also new to the Director’s Cut edition are 2 bonus levels. These level are slightly different from your typical levels. The bonus missions will challenge you to fight a new boss ir oder to obtain medals. Dealing damage will detach the medals from the boss, allowing you to catch them. Gather enough medals and you will advance to the next phase. Higher medals mean higher ranking. Taking damage will take medals away from you, so surviving continues to be a priority.
Lastly, there is a new boss mission mode that allow you to play “boss rush” missions. These missions have certain conditions, like using a specific weapon or fighting at a specific HP level. The targets are usually 1-3 bosses. Boss mission is a very fun arcadey mode for those who enjoyed the boss fights and want more of them.

SOUND EXCELLENCE

If there’s a factor that merits my highest praise is the sound department. Simply put, the OST is fantastic. The track length syncs perfectly with the stages, and it always fits the mood. I just couldn’t get enough of the OST, and listening to it while writing this review was the recipe for a perfect Sunday! I also got some good coffee that would make the captain proud.
For all the praise the music gets from me, it still is dragged down by the terrible sound mixing. Similarly to the voice acting, I tried to mess with the sound settings to increase the volume and reduce the sound effects, but it still wasn’t enough. The tracks were great but I struggled to listen to them amidst all the explosions. The calm moments were great, as they let me listen to the songs in peace.

LAST WORDS

Raiden is a master class in shmup design for the wrong reasons. Its high points perfectly illustrate how shmups should look and feel. The low points also show what you should NOT do when creating a shmup game. Despite all of this, it all comes down to how fun a game is.
Raiden V is a very fun game. It isn’t different, but it’s certainly very polished. I delivers some levels of quality that are notably absent in the majority of the games. As a concept, I feel like it serves as an example of how current gen shmups should be. The execution fell flat in some regards, but as a whole I was satisfied with the time I spent with the game. It does come with a hefty price tag, so my advice is to check this game out when you find a decent sale. I got mine at -70%.

THE RANKING SO FAR:

  1. Ikaruga
  2. Psyvariar Delta
  3. Darius Cozmic Collection Arcade
  4. Devil Engine
  5. Rolling Gunner
  6. Blazing Star
  7. Jamestown+
  8. Raiden V: Director’s Cut
  9. Darius Cozmic Collection Console
  10. Tengai
  11. Steredenn: Binary Stars
  12. Stardust Galaxy Warriors: Stellar Climax
  13. Sky Force: Reloaded
  14. Strikers 1945
  15. Black Paradox
  16. R-Type Dimensions EX
  17. Sine Mora EX
  18. Shikhondo – Soul Eater
  19. Ghost Blade HD
  20. AngerForce: Reloaded
  21. Aero Fighters 2 (ACA Neogeo)
  22. Q-YO Blaster
  23. Lightening Force: Quest for the darkstar (Sega Ages)
  24. Pawarumi
  25. Red Death
  26. Task Force Kampas
  27. Switch ‘N’ Shoot
  28. Last Resort (ACA Neogeo)
submitted by AzorMX to u/AzorMX [link] [comments]

VfxAlert signals and candlestick patterns

VfxAlert signals and candlestick patterns
All how to make on binary options strategies should take into account all market analysis options. You cannot make a decision on only one instrument, even if these are candlestick analysis patterns.
Let's start with trend signals, see examples of vfxAlert binary signals.
Currency pair GBP/USD and a strong signal on PUT-option signal. Let's look at the price chart - confirmation by the "Three Method" candlestick pattern and you can open an option with an expiration of 5-10 minutes.

https://preview.redd.it/gwn6hg5fs8p51.png?width=1100&format=png&auto=webp&s=f67cae8d8fde0e38a27318f8eadea0e2c3cad495
The signal appeared at the intersection of the moving average ("MA" on the signal panel). Traders see this. The option opens on a reversal, but then there are also candlestick patterns, and new PUT-signals with the “MA” label open the next options with a large volume.
The next signal on the CCI indicator shows the dynamics of the current trend. Created for the stock market, where trends are long and easier to find. On Forex, volatility is higher and there may be strong corrections and pullbacks that "break" the indicator. In the figure, binary options trading signals is confirmed by a strong candle pattern – the price goes towards the gap and you can open a CALL-option.
Reversal real binary options signals vfxAlert.
More reliable than trendy ones, beginners should start with them. It is easier to see and understand: "Bulling engulfing" pattern, which means the "bulls" managed to shift the balance of power to themselves and start an uptend on EUR / GBP. The vfxAlert signal confirms this by technical analysis of the RSI indicator.

https://preview.redd.it/gpikbe6js8p51.png?width=1100&format=png&auto=webp&s=8581ebe0a59f665b78891996f23d95c289972250
Doji candlestick appeared on EUUSD. In candlestick analysis, this is the strongest reversal pattern. The vfxAlert binary options signal according to Parabolic SAR trend confirms the beginning of the downtrend. After one candlestick, the trend started you can open the PUT-option.
The trader looks at «Power» value first, the market may be sideways, and candlestick patterns are false:

https://preview.redd.it/efwtnupms8p51.png?width=1100&format=png&auto=webp&s=1170e6526704d44ec1a0ee936de5797f41e61d31
We always start testing combination "vfxAlert live binary signals + candlestick patterns" on a demo account. You only receive recommendations and must make sure that they fit your strategy, trading session and trading style.
submitted by vfxAlert to u/vfxAlert [link] [comments]

2 months back at trading (update) and some new questions

Hi all, I posted a thread back a few months ago when I started getting seriously back into trading after 20 years away. I thought I'd post an update with some notes on how I'm progressing. I like to type, so settle in. Maybe it'll help new traders who are exactly where I was 2 months ago, I dunno. Or maybe you'll wonder why you spent 3 minutes reading this. Risk/reward, yo.
I'm trading 5k on TastyWorks. I'm a newcomer to theta positive strategies and have done about two thirds of my overall trades in this style. However, most of my experience in trading in the past has been intraday timeframe oriented chart reading and momentum stuff. I learned almost everything "new" that I'm doing from TastyTrade, /options, /thetagang, and Option Alpha. I've enjoyed the material coming from esinvests YouTube channel quite a bit as well. The theta gang type strategies I've done have been almost entirely around binary event IV contraction (mostly earnings, but not always) and in most cases, capped to about $250 in risk per position.
The raw numbers:
Net PnL : +247
Commissions paid: -155
Fees: -42
Right away what jumps out is something that was indicated by realdeal43 and PapaCharlie9 in my previous thread. This is a tough, grindy way to trade a small account. It reminds me a little bit of when I was rising through the stakes in online poker, playing $2/4 limit holdem. Even if you're a profitable player in that game, beating the rake over the long term is very, very hard. Here, over 3 months of trading a conservative style with mostly defined risk strategies, my commissions are roughly equal to my net PnL. That is just insane, and I don't even think I've been overtrading.
55 trades total, win rate of 60%
22 neutral / other trades
Biggest wins:
Biggest losses:
This is pretty much where I expected to be while learning a bunch of new trading techniques. And no, this is not a large sample size so I have no idea whether or not I can be profitable trading this way (yet). I am heartened by the fact that I seem to be hitting my earnings trades and selling quick spikes in IV (like weed cures Corona day). I'm disheartened that I've went against my principles several times, holding trades for longer than I originally intended, or letting losses mount, believing that I could roll or manage my way out of trouble.
I still feel like I am going against my nature to some degree. My trading in years past was scalping oriented and simple. I was taught that a good trade was right almost immediately. If it went against me, I'd cut it immediately and look for a better entry. This is absolutely nothing like that. A good trade may take weeks to develop. It's been really hard for me to sit through the troughs and it's been even harder to watch an okay profit get taken out by a big swing in delta. Part of me wonders if I am cut out for this style at all and if I shouldn't just take my 5k and start trading micro futures. But that's a different post...
I'll share a couple of my meager learnings:


My new questions :

That's enough of this wall of text for now. If you made it this far, I salute you, because this shit was even longer than my last post.
submitted by bogglor to options [link] [comments]

[The Scuu Paradox] - Chapter 18

At the Beginning
Previously on The Scuu Paradox…
  The smell of burning wood was all I could focus on. The fires had long died out, making it difficult to see in the darkness; despite all other modifications, Kridib’s eyes weren’t able to see overly well in the dark. Every five minutes, Radiance would send an infrared scan of the colony to help him and his team with their advancement. Despite all that help and the four missile strikes, progress was minimal. Of the forty-seven people sent to the planet, eleven had been killed and five more severely wounded, rendering them useless in battle. From what I could see, Rigel’s forces had clustered in specific points of the colony, giving up the rest: a sensible strategy that had allowed them to ambush three of our teams while suffering negligible losses themselves. As things stood, the enemy forces had positioned themselves in two areas of the colony. Both spots encircled a specific building—mine and the captain’s locations—making further missile strikes impossible.
  Update? Kridib asked me through the mind link.
  Nothing, I replied. Rigel had left shortly after our last chat, taking the third-contact rods with him. Since then, I had remained safely isolated in the room and completely alone. Half of them have probably gone to sleep.
  Tell me if anything changes. Kribib looked up. A dozen sats were visible in the night sky. We’ll be making another go soon.
  I don’t think that’s a good idea.
  So far, Kridib had made four attempts to reach me, all of them unsuccessful. His approach, though chaotic at best, had managed to keep him alive. There had been a close call during which his left arm had been grazed by a bullet, though that time the man hadn’t frozen.
  Everyone has to sleep, Kridib said, heading back into one of the buildings that had been transformed into a ground base of operations. I’ll go first.
  Must I wake you? I asked.
  No. With that, the link was severed.
  To a degree, I was thankful, though not too much. Forcing whatever strength I had, I moved my head to look around the room as much as I was able. Nothing had changed in the last four hours, but at least it let me do something. The last time I felt remotely similar was when I’d had my sensor systems knocked out, though even then I was able to use my shuttle AIs to paint me a picture. Here, I was completely helpless and, to a vast degree, blind.
  “Do I get any water?” I asked as loudly as my lungs would let me.
  There was no reason to expect an answer. Even if anyone was awake on the lower floors, they would be on lookout duty. Saying it out loud, though, made me feel better for some reason. To my surprise, the door to the room opened.
  “Thought you were above those things.” Rigel walked in slowly. Even with my lack of focus, I could see that he had changed clothes. The colours were dark enough to be considered a uniform, although I couldn’t make out any other details. “You can’t swallow, remember?”
  “My mouth feels dry,” I explained.
  “Too bad.” Despite my poor vision, I could hear him smile as he said that.
  Walking slowly, he made his way to the stool near me and sat down. From this distance, I could see him taking something from his front pocket. In the dim light, it was impossible to tell what exactly.
  “Still having problems focusing?” Rigel asked.
  “Yes.” There was no point in lying.
  “Pity. Agora works well on organic tissue. Not on techno-mongrels,” he added with a laugh. “If you weren’t one, you’d be dead. There’s a win for you.”
  And you’re not making any sense, I thought.
  “Nice murder troops you got out there. Quick and efficient. A few years ago, the locals would’ve had fun pulling their wings off. Time leaves its mark.” Rigel flicked the object. It let out a peculiar metallic sound. “No action, no combat sims, just the local pests that roam the planet. Those were brought here too, did you know?”
  “I heard about it.”
  “Another brilliant idea from the bureaucracy. Create a full ecosystem. Plants, critters, predators... all must be present and carefully maintained. We tried killing them off once. Those were the days. Three colonies setting out, killing everything in sight until the orbital station stopped sending food.” There was a slight pause. “And you know the best part?” Rigel leaned towards me. “None of that happened.”
  If I could have pulled back, I would have. There was no way of knowing if these were insane rantings or if he was referring to a dark op coverup. Considering he was from the Salvage Authorities, either was possible, and both options were equally undesirable.
  “I went through your data, Elcy.” Rigel rubbed his hands. “You know things you shouldn’t.”
  “Because of my past, I’ve been placed on special assignments,” I said. Technically it was true, though we both knew it didn’t explain away the inconsistencies.
  “You knew about the third-contact artifacts before. You’ve operated them before.” He moved his hand closer to my face. I felt a cold metallic surface touch my cheek. “You’re searching for something. Something that you’re not supposed to find.” He moved the object away from my face. “Here’s my offer. You answer some of my questions, and I’ll answer some of yours.”
  “That’s one way to get court-martialed.” Not to mention there was no guarantee my self-destruct chip wouldn’t go off at any point.
  “Please don’t give me the line that the fleet is going through all that trouble just to rescue you. If you were that valuable, you’d never have been sent to this hell in the first place.” Rigel stood up. “What are the odds of the fleet extracting you in one piece? Two percent?”
  “Point-seven-three-nine,” I corrected. Frankly, I was surprised they were going through all the trouble. “Give or take.”
  “Less than one percent,” Rigel snorted. “It’s your call. You have three hours to make it. Before I leave you, here’s a freebie. This planet, it isn’t some randomly colonized world in ‘unexplored space.’ We’re in the buffer zone—the border between the Scuu and human space. Think about that.” He made his way to the door. Reaching it, he stopped and turned around. “Oh, and we’re constantly being monitored.”
 
  Gamma-Ligata, Cassandrian Front—615.11 A.E. (Age of Expansion)
    The third wave of shuttles approached my forward left hangar one by one. The instant they came within three hundred meters, I was handed over direct control of the AIs. As with the previous batches, the first thing I did was to have a set of isolated subroutines flash the memory and purge the entire operating system. That done, I sent out a mini-sat to latch onto and assume control of the shuttles. It was a slow and tedious process, but necessary considering the circumstances.
  “How are things?” Wilco asked from the bridge. Augustus had gathered most of his officers to a private meeting in his quarters, leaving Wilco in command. This wasn’t the first time it had happened, but each time it did, it felt strange.
  “Everything’s going as planned,” I said, as the first shuttle went under my control.
  A quick internal scan revealed that there were sixty-two people aboard, all cuffed and tagged. All of them were tagged as infected, and, to my surprise, none of them were sedated. The instructions were to take them in and monitor their actions at all times, and only to engage if they threatened the ship. Normally, I’d be confident that Augustus knew what was going on. With everything we’d gone through since I’d joined the front, I didn’t think there was anything in the galaxy that could surprise him. I was wrong.
  Finishing my internal check of the shuttle, I directed it to the outer hangar doors and had it dock. The passengers—all of their identities classified—waited till I covered the walls with disembark notifications, then stood up and quietly proceeded to get off, in orderly fashion. I could tell by Wilco’s expression that he found it unnerving.
  “A thousand and eighty-two passengers on board,” I said on the bridge and in the captain’s quarters. The moment the last person set foot in the hangar, I would eject the shuttle from my hangar-bay, self-destruct it, and proceed with the next.
  Delegating the task to my isolated subroutines, I reviewed the instructions I had received. The proper ident protocols and authorisations had been used, ensuring that I would do as instructed without asking questions. An emergency transmission from an unidentifiable ship had led me here. I knew nothing about the ship’s name or specifics, and I wasn’t allowed to get close enough to get a visual. The only things I was allowed to see were its shuttles and mass. Everything else was open to interpretation.
  “Have any of them said anything?” Wilco asked.
  “No.” I displayed images of the hangar bay and the corresponding corridors surrounding it. As part of my instructions, the entire section was sealed off and quarantined. “They’re eating.” They also appeared to be healthy, although the instructions stressed no one was to come into contact with them under any circumstances. “I’ve received no indication of how long we’re to keep them. Did the captain get an indication?”
  “No,” Wilco said in his usual somber voice. “Is everything sealed off?”
  “Yes.” I rechecked. “No way in or out without captain’s approval.”
  “Set a buffer zone.” The man went on. “No one goes in or out without my permission.”
  “If you say so.” It wasn’t difficult. The area in question had been made empty to accommodate the quarantined arrivals, though it seemed a bit too much. “Want me to put sentinels?”
  “No. We don’t have to hurt anyone, just hold them.” He slinked down in his chair. “They’re the Med boys’ toys. We don’t get to play with them.”
  Med boys… Only Wilco referred to the Medical Core in such fashion. As most organisations, they were part of the fleet, yet their specific area of expertise gave them as much authority as the Salvage Authorities and the BICEFI combined. As a ship, I knew fairly little about them: they had the power to impose quarantines and cordon off entire planets if they wished. They were also the only organisation with the power to hold an active captain in check. Possibly, that was the reason Augustus didn’t get along with any of his medical officers. According to the public files, the Med Core had created the inner-body nanites and were instrumental in getting humans into space. There were also whispers that they were involved in creating the first ship-cores, although I found that unlikely. Even so, they had more authority than anyone aboard. Even on the front, we had no option but to obey.
  “It won’t be practical heading into war with them,” I said as the second shuttle entered the hangar bay.
  “Not our call. We’re to hold them until a Med ship picks them up,” Wilco sighed. “And monitor everything they do.”
  “How is that different from anyone else aboard?” I ventured a chuckle.
  “You don’t need to know,” the lieutenant said darkly.
  Another thing about Wilco was that he had the uncanny ability to make any topic of conversation dark. I ran a few simulations testing various responses, then decided not to respond further. In the best-case scenario, there was a twenty-seven percent chance he found my reaction funny.
  “Elcy.” Augustus granted me sensor access to the captain’s quarters. “What’s the ETA on the cattle?”
  “The passengers will be all aboard in seven minutes, captain.” A decade of attempts to mellow his behaviour had brought me no results. “Five, if you need me off in a rush.”
  “Get it done in five,” he barked. “We’ve got new orders. We’re joining a purge fleet. Go on yellow. Get the grunts prepped.”
  “Aye, sir.” I issued the order to everyone aboard. Seconds later, ground troop officers and sergeants were shouting their troops into order. “What about the passengers, sir? Won’t combat expose them to unnecessary danger?”
  “There’s no unnecessary danger,” Augustus barked again. The rest of the command staff had already started leaving the room. Their expressions ranged from mild annoyance to disapproval. Whatever discussions had taken place, they must have been unpleasant and one-sided. “Monitor them at all times and don’t interact until I say so.”
  “Understood.”
  It sounded like another escort mission, and I didn’t like escort missions. Normally, it would just be troop detachments or—if we were very unlucky—some mid-level bureaucrat or admiral’s aid sent to do a front-line inspection. Transporting quarantined personnel wasn’t in my usual purview, although if it had been, I’d never know.
  “What’s the course of treatment they must undergo?” I asked.
  “No treatment,” Augustus grumbled. “That’s for the Meds to figure out.”
  “All passengers are tagged as infected. Regulations require we provide immediate medical attention.” I felt my words sound hollow. If Augustus had the authority to provide such, he would have told me already. The only thing I was left was to go through the motions, expecting to receive the obvious denial.
  “Just monitor them, Elcy! That’s what we’ve been told. And whatever happens, don’t interfere.”
 
  Just monitor them.
  I had spent three months and thirty-nine hours monitoring the passengers onboard. Through battles and repairs, every single action had been carefully observed, recorded, and stored on external data storage. For the most part, nothing happened. The people would live boring, perfectly organised lives, almost as if they knew they were being watched. There were no scuffles, few arguments, and only one incident resulting in injuries when a Cassandrian fighter managed to slip through my external defences and fire a salvo at the hangar bay. Their health condition also seemed no different than when they had come aboard. I had dedicated a dozen subroutines to collect any potential symptoms in an effort to determine the type of disease they had, but had come to no conclusion. Then, one day, they were all gone. I had no memory of the Medical ship that had taken them, or where that had happened. The only thing I was certain about was the time—precisely two thousand, one hundred and ninety-nine hours since the last of them had come aboard. Everything else remained restricted.
  Looks like there’s always someone monitoring someone, Sev. If Rigel was to be believed someone was monitoring the planet. The question was who.
  Seconds turned to minutes, then hours. Hundreds of times, I considered looking into my restricted memories for information regarding the third-contact artifacts or the events in gamma-Ligata, and each time I found a reason not to. As Rigel had said, the chance of me getting off the planet alive was less than one percent, but the knowledge of the existence of the possibility kept me acting. And then there was Rigel’s offer…
  Rad, are you monitoring me? I asked, attempting to latch on to any open communication protocols. A connection was established, but instead of linking to Radiance, I found myself connecting back to Kridib’s mind. On cue, an info burst from Radiance followed, giving the latest scan. This time, I could see the location of our forces. The total number had increased to seventy-four, Kridib included. Nearly eight percent were gathered close to the captain’s expected location. Kridib and five more were closer to me.
  Get ready, Kridib said. Moments later, bursts of gunfire echoed in the distance; they were going for the captain first.
  The mission had begun. From here on, I could see several potential outcomes. In all of them, there was a high probability that Rigel attempted to make a deal.
  When I was a ship, Augustus had taught me one key thing when it came to missions: regardless of the depth of predictions and the computing power at their disposal, humans always boiled down a situation to a simple binary choice. Rigel wanted something from me and had invested too much to let his chance slip. Before the outcome of Kridib’s rescue mission, Rigel would come here to get an answer to his proposal. All I had to do was wait.
  As I lay, I watched Kridib run through the darkness towards my location. Unlike before, he was wearing night vision goggles, letting him make out his surroundings better.
  No thermal? I asked as Kridib made his way through the streets. The smell of burned vegetation could still be felt.
  That’s what you’re for.
  Not a reply to be thrilled about, but one to be expected. Cross-referencing Radiance’s latest scan, I started analysing every frame of Kridib’s stream. The first few minutes passed without incident. Judging by the intensified background gunfire, the locals were more focused on keeping Renaan isolated than stopping Kridib. Twenty-eight seconds, later the first shot sounded.
  Sniper! I shouted straight in Kridib’s mind.
  “Cover fire!” he shouted, rushing for cover.
  Watch out for a cross, I warned.
  The shooting intensified. Based on the area scan, the group was a few hundred meters away. One strong push and they’d be here. That said, I knew that the building was guarded by more than seven people. If I were in Rigel’s place, I would have dedicated at least three dozen.
  Concentrated fire focused on the second floor of a building, blowing off the entire wall. There was a brief scream before a rocket flew into the spot, hollowing the entire structure with a blast.
  Heavy weapons? I asked Kridib. I didn’t think Radiance’s captain would resort to such firepower, considering third-contact artifacts were involved; one direct hit, and the entire colony might well end up a smouldering crater, not to mention the potential communication repercussions. Maybe there was truth in Rigel’s statement that Flight Commander Nitel was getting desperate.
  As I was following Kridib’s advancement outside, the door opened once more—as predicted, Rigel had returned. He was wearing the same set of clothes as three hours ago. I found it puzzling that I couldn’t spot any semblance of a weapon on him.
  “Your masters have gotten desperate,” the man said in suspiciously calm fashion. “Looks like they’ve sent everything they had to get Renaan.” He walked up to me, then leaned over. “And just a handful to get you.”
  “Are they winning?” I tried to smile.
  “Beats me.” Rigel didn’t seem bothered. “You thought about my offer?”
  “I did. And I don’t think accepting would be a good deal. If I wait for them to rescue the captain, your bargaining power ends.”
  “Oh?” The man chuckled.
  “There’s nothing else the fleet would be willing to trade.” Except potentially the pyramid artifact. Even then, I didn’t see them sacrificing the Gregorius. “Once the captain boards a shuttle, it’s over.”
  A person of Kridib’s squad fell as they were approaching my building. I heard the unmistakable sound of bullets piercing armor, then silence. That was the thing about sound suppressors: one could get killed, and there still wouldn’t be any sound of one hitting the ground. I wanted to turn around and see what had happened, potentially to help. There was a seven-point-three chance that the wound wasn’t fatal. Kridib kept on moving forwards. That’s what made him a ground trooper… it also caused me pain.
  “What if I kill Renaan?” Rigel mused. “I won’t lose much. Everyone down here’s dead anyway. Someone in the fleet has gone through a lot of shit to get Renaan back. They’d lose a hell of a lot more.”
  “What if they save the captain?” I countered. “Either way, we’ll soon find out, and you’ll have no offer.”
  “Quantum paradox logic?” Rigel sounded surprised. “Strange hearing that from you, missy. I’ll have to skim your file once I’m out of here.” He paused for a moment, then dragged the nearby stool over—making a deliberate sound—and sat down. “Truth is, once the moment ends, we both lose our chance. Are you okay with that?”
  Why are you so confident? I wondered. Even if I were to agree, he wouldn’t be able to get much from me in the next ten minutes, even less if Kridib managed to reach my room. His squad had already made its way to the building proper, facing less than expected resistance. From what I was able to see, there were two snipers left on the upper floors and two machine-gunners on the first. All auxiliary positions on the nearby buildings seemed to have dealt with, although there was no sign of Ogum.
  “You’ve dealt with Salvage before, I can tell,” Rigel pressed on. “You won’t get another chance like this.”
  The old man’s with me in the basement, I told Kridib. No guards in the room. He’s ex-Salvage Authorities. Take him, and the mission is over. Saying that hurt slightly. Despite being the enemy, and a threat to the war effort, he remained human.
  “Then I guess I’ll never know.” As I spoke, I saw Kridib charge at the building. As before, there was nothing fancy about it, just determination and insanity. Several bullets flew so close to him I could hear them, but this time none of them hit. “Your bargaining window is over. No deal.”
  Kridib emptied his sidearm at the door in front of him, then rushed in. I could see no guards inside, just a set of hastily built staircases. Whatever the original purpose of the building was, it had been transformed into a field center at some point—likely during a previous escape attempt. Probably a group similar to ours had made it their temporary base, then left it as it was once they had completed their mission. No wonder Rigel had had me transported there. Kridib didn’t waste time making parallels, instead drawing his second sidearm and rushing down.
  At least two floors down, I said. I’m not hearing any of the gunfire.
  Is he armed? Kridib asked.
  Unsure. Not that I can tell. There are artifacts, though.
  “Such a teacher’s pet.” Rigel sighed after a long silence. “In the end, you’re nothing but a ship.” He stood up.
  He’s standing directly from the door, I said to Kridib. Seven degrees from center. Small frame, average height.
  Kridib fired three shots. Three bullets drilled through the alloy surface. Half a second later, Kridib followed kicking the door in.
  “Just one small thing.” Rigel took a tube-shaped object from his vest pocket.
  Meanwhile, I was staring at an empty room from Kridib’s eyes. It was at least three times smaller than the one I was in, bare and completely deserted. There was no Rigel, no me, no equipment, just a single metallic cube the size of my fingernail placed neatly on the floor.
  “Renaan was never the target.” The old man bent down and injected something in my neck. A new cascade of connection requests followed. “You are.”
—-
Next Chapter
submitted by LiseEclaire to HFY [link] [comments]

[N] Tensorflow 2.3.0 Released!

There is also a new experimental tf.data API for saving and loading datasets(https://www.tensorflow.org/versions/r2.3/api_docs/python/tf/data/experimental/save)
https://github.com/tensorflow/tensorflow/commit/4d58a67a9f19ab8d0cfbb2d8e461ebb73ce06db6
https://github.com/tensorflow/tensorflow/issues/38483#issuecomment-640963109

https://github.com/tensorflow/tensorflow/releases/tag/v2.3.0

Release 2.3.0

Major Features and Improvements


In addition checkout the detailed guide for analyzing input pipeline performance with TF Profiler.

Breaking Changes


Known Caveats


Bug Fixes and Other Changes

TF Core:


tf.data:


tf.distribute:


tf.keras:


tf.lite:


Packaging Support


Profiler


TPU Enhancements


Tracing and Debugging


XLA Support


submitted by IIIBlueberry to MachineLearning [link] [comments]

AJ ALMENDINGER

glimpse into the future of Roblox

Our vision to bring the world together through play has never been more relevant than it is now. As our founder and CEO, David Baszucki (a.k.a. Builderman), mentioned in his keynote, more and more people are using Roblox to stay connected with their friends and loved ones. He hinted at a future where, with our automatic machine translation technology, Roblox will one day act as a universal translator, enabling people from different cultures and backgrounds to connect and learn from each other.
During his keynote, Builderman also elaborated upon our vision to build the Metaverse; the future of avatar creation on the platform (infinitely customizable avatars that allow any body, any clothing, and any animation to come together seamlessly); more personalized game discovery; and simulating large social gatherings (like concerts, graduations, conferences, etc.) with tens of thousands of participants all in one server. We’re still very early on in this journey, but if these past five months have shown us anything, it’s clear that there is a growing need for human co-experience platforms like Roblox that allow people to play, create, learn, work, and share experiences together in a safe, civil 3D immersive space.
Up next, our VP of Developer Relations, Matt Curtis (a.k.a. m4rrh3w), shared an update on all the things we’re doing to continue empowering developers to create innovative and exciting content through collaboration, support, and expertise. He also highlighted some of the impressive milestones our creator community has achieved since last year’s RDC. Here are a few key takeaways:
And lastly, our VP of Engineering, Technology, Adam Miller (a.k.a. rbadam), unveiled a myriad of cool and upcoming features developers will someday be able to sink their teeth into. We saw a glimpse of procedural skies, skinned meshes, more high-quality materials, new terrain types, more fonts in Studio, a new asset type for in-game videos, haptic feedback on mobile, real-time CSG operations, and many more awesome tools that will unlock the potential for even bigger, more immersive experiences on Roblox.

Vibin’

Despite the virtual setting, RDC just wouldn’t have been the same without any fun party activities and networking opportunities. So, we invited special guests DJ Hyper Potions and cyber mentalist Colin Cloud for some truly awesome, truly mind-bending entertainment. Yoga instructor Erin Gilmore also swung by to inspire attendees to get out of their chair and get their body moving. And of course, we even had virtual rooms dedicated to karaoke and head-to-head social games, like trivia and Pictionary.
Over on the networking side, Team Adopt Me, Red Manta, StyLiS Studios, and Summit Studios hosted a virtual booth for attendees to ask questions, submit resumes, and more. We also had a networking session where three participants would be randomly grouped together to get to know each other.

What does Roblox mean to you?

We all know how talented the Roblox community is from your creations. We’ve heard plenty of stories over the years about how Roblox has touched your lives, how you’ve made friendships, learned new skills, or simply found a place where you can be yourself. We wanted to hear more. So, we asked attendees: What does Roblox mean to you? How has Roblox connected you? How has Roblox changed your life? Then, over the course of RDC, we incorporated your responses into this awesome mural.
📷
Created by Alece Birnbach at Graphic Recording Studio

Knowledge is power

This year’s breakout sessions included presentations from Roblox developers and staff members on the latest game development strategies, a deep dive into the Roblox engine, learning how to animate with Blender, tools for working together in teams, building performant game worlds, and the new Creator Dashboard. Dr. Michael Rich, Associate Professor at Harvard Medical School and Physician at Boston Children’s Hospital, also led attendees through a discussion on mental health and how to best take care of you and your friends’ emotional well-being, especially now during these challenging times.
📷
Making the Dream Work with Teamwork (presented by Roblox developer Myzta)
In addition to our traditional Q&A panel with top product and engineering leaders at Roblox, we also held a special session with Builderman himself to answer the community’s biggest questions.
📷
Roblox Product and Engineering Q&A Panel

2020 Game Jam

The Game Jam is always one of our favorite events of RDC. It’s a chance for folks to come together, flex their development skills, and come up with wildly inventive game ideas that really push the boundaries of what’s possible on Roblox. We had over 60 submissions this year—a new RDC record.
Once again, teams of up to six people from around the world had less than 24 hours to conceptualize, design, and publish a game based on the theme “2020 Vision,” all while working remotely no less! To achieve such a feat is nothing short of awe-inspiring, but as always, our dev community was more than up for the challenge. I’ve got to say, these were some of the finest creations we’ve seen.
WINNERS
Best in Show: Shapescape Created By: GhettoMilkMan, dayzeedog, maplestick, theloudscream, Brick_man, ilyannna You awaken in a strange laboratory, seemingly with no way out. Using a pair of special glasses, players must solve a series of anamorphic puzzles and optical illusions to make their escape.
Excellence in Visual Art: agn●sia Created By: boatbomber, thisfall, Elttob An obby experience unlike any other, this game is all about seeing the world through a different lens. Reveal platforms by switching between different colored lenses and make your way to the end.
Most Creative Gameplay: Visions of a perspective reality Created By: Noble_Draconian and Spathi Sometimes all it takes is a change in perspective to solve challenges. By switching between 2D and 3D perspectives, players can maneuver around obstacles or find new ways to reach the end of each level.
Outstanding Use of Tech: The Eyes of Providence Created By: Quenty, Arch_Mage, AlgyLacey, xJennyBeanx, Zomebody, Crykee This action/strategy game comes with a unique VR twist. While teams fight to construct the superior monument, two VR players can support their minions by collecting resources and manipulating the map.
Best Use of Theme: Sticker Situation Created By: dragonfrosting and Yozoh Set in a mysterious art gallery, players must solve puzzles by manipulating the environment using a magic camera and stickers. Snap a photograph, place down a sticker, and see how it changes the world.
OTHER TOP PICKS
HONORABLE MENTIONS
For the rest of the 2020 Game Jam submissions, check out the list below:
20-20 Vision | 20/20 Vision | 2020 Vision, A Crazy Perspective | 2020 Vision: Nyon | A Wild Trip! | Acuity | Best Year Ever | Better Half | Bloxlabs | Climb Stairs to 2021 | Double Vision (Team hey apple) | Eyebrawl | Eyeworm Exam | FIRE 2020 | HACKED | Hyperspective | Lucid Scream | Mystery Mansion | New Years at the Museum | New Year’s Bash | Poor Vision | Predict 2020 | RBC News | Retrovertigo | Second Wave | see no evil | Sight Fight | Sight Stealers | Spectacles Struggle | Specter Spectrum | Survive 2020 | The Lost Chicken Leg | The Outbreak | The Spyglass | Time Heist | Tunnel Vision | Virtual RDC – The Story | Vision (Team Freepunk) | Vision (Team VIP People ####) | Vision Developers Conference 2020 | Vision Is Key | Vision Perspective | Vision Racer | Visions | Zepto
And last but not least, we wanted to give a special shout out to Starboard Studios. Though they didn’t quite make it on time for our judges, we just had to include Dave’s Vision for good measure. 📷
Thanks to everyone who participated in the Game Jam, and congrats to all those who took home the dub in each of our categories this year. As the winners of Best in Show, the developers of Shapescape will have their names forever engraved on the RDC Game Jam trophy back at Roblox HQ. Great work!

‘Til next year

And that about wraps up our coverage of the first-ever digital RDC. Thanks to all who attended! Before we go, we wanted to share a special “behind the scenes” video from the 2020 RDC photoshoot.
Check it out:
It was absolutely bonkers. Getting 350 of us all in one server was so much fun and really brought back the feeling of being together with everyone again. That being said, we can’t wait to see you all—for real this time—at RDC next year. It’s going to be well worth the wait. ‘Til we meet again, my friends.
© 2020 Roblox Corporation. All Rights Reserved.

Improving Simulation and Performance with an Advanced Physics Solver

August

05, 2020

by chefdeletat
PRODUCT & TECH
📷In mid-2015, Roblox unveiled a major upgrade to its physics engine: the Projected Gauss-Seidel (PGS) physics solver. For the first year, the new solver was optional and provided improved fidelity and greater performance compared to the previously used spring solver.
In 2016, we added support for a diverse set of new physics constraints, incentivizing developers to migrate to the new solver and extending the creative capabilities of the physics engine. Any new places used the PGS solver by default, with the option of reverting back to the classic solver.
We ironed out some stability issues associated with high mass differences and complex mechanisms by the introduction of the hybrid LDL-PGS solver in mid-2018. This made the old solver obsolete, and it was completely disabled in 2019, automatically migrating all places to the PGS.
In 2019, the performance was further improved using multi-threading that splits the simulation into jobs consisting of connected islands of simulating parts. We still had performance issues related to the LDL that we finally resolved in early 2020.
The physics engine is still being improved and optimized for performance, and we plan on adding new features for the foreseeable future.

Implementing the Laws of Physics

📷
The main objective of a physics engine is to simulate the motion of bodies in a virtual environment. In our physics engine, we care about bodies that are rigid, that collide and have constraints with each other.
A physics engine is organized into two phases: collision detection and solving. Collision detection finds intersections between geometries associated with the rigid bodies, generating appropriate collision information such as collision points, normals and penetration depths. Then a solver updates the motion of rigid bodies under the influence of the collisions that were detected and constraints that were provided by the user.
📷
The motion is the result of the solver interpreting the laws of physics, such as conservation of energy and momentum. But doing this 100% accurately is prohibitively expensive, and the trick to simulating it in real-time is to approximate to increase performance, as long as the result is physically realistic. As long as the basic laws of motion are maintained within a reasonable tolerance, this tradeoff is completely acceptable for a computer game simulation.

Taking Small Steps

The main idea of the physics engine is to discretize the motion using time-stepping. The equations of motion of constrained and unconstrained rigid bodies are very difficult to integrate directly and accurately. The discretization subdivides the motion into small time increments, where the equations are simplified and linearized making it possible to solve them approximately. This means that during each time step the motion of the relevant parts of rigid bodies that are involved in a constraint is linearly approximated.
📷📷
Although a linearized problem is easier to solve, it produces drift in a simulation containing non-linear behaviors, like rotational motion. Later we’ll see mitigation methods that help reduce the drift and make the simulation more plausible.

Solving

📷
Having linearized the equations of motion for a time step, we end up needing to solve a linear system or linear complementarity problem (LCP). These systems can be arbitrarily large and can still be quite expensive to solve exactly. Again the trick is to find an approximate solution using a faster method. A modern method to approximately solve an LCP with good convergence properties is the Projected Gauss-Seidel (PGS). It is an iterative method, meaning that with each iteration the approximate solution is brought closer to the true solution, and its final accuracy depends on the number of iterations.
📷
This animation shows how a PGS solver changes the positions of the bodies at each step of the iteration process, the objective being to find the positions that respect the ball and socket constraints while preserving the center of mass at each step (this is a type of positional solver used by the IK dragger). Although this example has a simple analytical solution, it’s a good demonstration of the idea behind the PGS. At each step, the solver fixes one of the constraints and lets the other be violated. After a few iterations, the bodies are very close to their correct positions. A characteristic of this method is how some rigid bodies seem to vibrate around their final position, especially when coupling interactions with heavier bodies. If we don’t do enough iterations, the yellow part might be left in a visibly invalid state where one of its two constraints is dramatically violated. This is called the high mass ratio problem, and it has been the bane of physics engines as it causes instabilities and explosions. If we do too many iterations, the solver becomes too slow, if we don’t it becomes unstable. Balancing the two sides has been a painful and long process.

Mitigation Strategies

📷A solver has two major sources of inaccuracies: time-stepping and iterative solving (there is also floating point drift but it’s minor compared to the first two). These inaccuracies introduce errors in the simulation causing it to drift from the correct path. Some of this drift is tolerable like slightly different velocities or energy loss, but some are not like instabilities, large energy gains or dislocated constraints.
Therefore a lot of the complexity in the solver comes from the implementation of methods to minimize the impact of computational inaccuracies. Our final implementation uses some traditional and some novel mitigation strategies:
  1. Warm starting: starting with the solution from a previous time-step to increase the convergence rate of the iterative solver
  2. Post-stabilization: reprojecting the system back to the constraint manifold to prevent constraint drift
  3. Regularization: adding compliance to the constraints ensuring a solution exists and is unique
  4. Pre-conditioning: using an exact solution to a linear subsystem, improving the stability of complex mechanisms
Strategies 1, 2 and 3 are pretty traditional, but 3 has been improved and perfected by us. Also, although 4 is not unheard of, we haven’t seen any practical implementation of it. We use an original factorization method for large sparse constraint matrices and a new efficient way of combining it with the PGS. The resulting implementation is only slightly slower compared to pure PGS but ensures that the linear system coming from equality constraints is solved exactly. Consequently, the equality constraints suffer only from drift coming from the time discretization. Details on our methods are contained in my GDC 2020 presentation. Currently, we are investigating direct methods applied to inequality constraints and collisions.

Getting More Details

Traditionally there are two mathematical models for articulated mechanisms: there are reduced coordinate methods spearheaded by Featherstone, that parametrize the degrees of freedom at each joint, and there are full coordinate methods that use a Lagrangian formulation.
We use the second formulation as it is less restrictive and requires much simpler mathematics and implementation.
The Roblox engine uses analytical methods to compute the dynamic response of constraints, as opposed to penalty methods that were used before. Analytics methods were initially introduced in Baraff 1989, where they are used to treat both equality and non-equality constraints in a consistent manner. Baraff observed that the contact model can be formulated using quadratic programming, and he provided a heuristic solution method (which is not the method we use in our solver).
Instead of using force-based formulation, we use an impulse-based formulation in velocity space, originally introduced by Mirtich-Canny 1995 and further improved by Stewart-Trinkle 1996, which unifies the treatment of different contact types and guarantees the existence of a solution for contacts with friction. At each timestep, the constraints and collisions are maintained by applying instantaneous changes in velocities due to constraint impulses. An excellent explanation of why impulse-based simulation is superior is contained in the GDC presentation of Catto 2014.
The frictionless contacts are modeled using a linear complementarity problem (LCP) as described in Baraff 1994. Friction is added as a non-linear projection onto the friction cone, interleaved with the iterations of the Projected Gauss-Seidel.
The numerical drift that introduces positional errors in the constraints is resolved using a post-stabilization technique using pseudo-velocities introduced by Cline-Pai 2003. It involves solving a second LCP in the position space, which projects the system back to the constraint manifold.
The LCPs are solved using a PGS / Impulse Solver popularized by Catto 2005 (also see Catto 2009). This method is iterative and considers each individual constraints in sequence and resolves it independently. Over many iterations, and in ideal conditions, the system converges to a global solution.
Additionally, high mass ratio issues in equality constraints are ironed out by preconditioning the PGS using the sparse LDL decomposition of the constraint matrix of equality constraints. Dense submatrices of the constraint matrix are sparsified using a method we call Body Splitting. This is similar to the LDL decomposition used in Baraff 1996, but allows more general mechanical systems, and solves the system in constraint space. For more information, you can see my GDC 2020 presentation.
The architecture of our solver follows the idea of Guendelman-Bridson-Fedkiw, where the velocity and position stepping are separated by the constraint resolution. Our time sequencing is:
  1. Advance velocities
  2. Constraint resolution in velocity space and position space
  3. Advance positions
This scheme has the advantage of integrating only valid velocities, and limiting latency in external force application but allowing a small amount of perceived constraint violation due to numerical drift.
An excellent reference for rigid body simulation is the book Erleben 2005 that was recently made freely available. You can find online lectures about physics-based animation, a blog by Nilson Souto on building a physics engine, a very good GDC presentation by Erin Catto on modern solver methods, and forums like the Bullet Physics Forum and GameDev which are excellent places to ask questions.

In Conclusion

The field of game physics simulation presents many interesting problems that are both exciting and challenging. There are opportunities to learn a substantial amount of cool mathematics and physics and to use modern optimizations techniques. It’s an area of game development that tightly marries mathematics, physics and software engineering.
Even if Roblox has a good rigid body physics engine, there are areas where it can be improved and optimized. Also, we are working on exciting new projects like fracturing, deformation, softbody, cloth, aerodynamics and water simulation.
Neither Roblox Corporation nor this blog endorses or supports any company or service. Also, no guarantees or promises are made regarding the accuracy, reliability or completeness of the information contained in this blog.
This blog post was originally published on the Roblox Tech Blog.
© 2020 Roblox Corporation. All Rights Reserved.

Using Clang to Minimize Global Variable Use

July

23, 2020

by RandomTruffle
PRODUCT & TECH
Every non-trivial program has at least some amount of global state, but too much can be a bad thing. In C++ (which constitutes close to 100% of Roblox’s engine code) this global state is initialized before main() and destroyed after returning from main(), and this happens in a mostly non-deterministic order. In addition to leading to confusing startup and shutdown semantics that are difficult to reason about (or change), it can also lead to severe instability.
Roblox code also creates a lot of long-running detached threads (threads which are never joined and just run until they decide to stop, which might be never). These two things together have a very serious negative interaction on shutdown, because long-running threads continue accessing the global state that is being destroyed. This can lead to elevated crash rates, test suite flakiness, and just general instability.
The first step to digging yourself out of a mess like this is to understand the extent of the problem, so in this post I’m going to talk about one technique you can use to gain visibility into your global startup flow. I’m also going to discuss how we are using this to improve stability across the entire Roblox game engine platform by decreasing our use of global variables.

Introducing -finstrument-functions

Nothing excites me more than learning about a new obscure compiler option that I’ve never had a use for before, so I was pretty happy when a colleague pointed me to this option in the Clang Command Line Reference. I’d never used it before, but it sounded very cool. The idea being that if we could get the compiler to tell us every time it entered and exited a function, we could filter this information through a symbolizer of some kind and generate a report of functions that a) occur before main(), and b) are the very first function in the call-stack (indicating it’s a global).
Unfortunately, the documentation basically just tells you that the option exists with no mention of how to use it or if it even actually does what it sounds like it does. There’s also two different options that sound similar to each other (-finstrument-functions and -finstrument-functions-after-inlining), and I still wasn’t entirely sure what the difference was. So I decided to throw up a quick sample on godbolt to see what happened, which you can see here. Note there are two assembly outputs for the same source listing. One uses the first option and the other uses the second option, and we can compare the assembly output to understand the differences. We can gather a few takeaways from this sample:
  1. The compiler is injecting calls to __cyg_profile_func_enter and __cyg_profile_func_exit inside of every function, inline or not.
  2. The only difference between the two options occurs at the call-site of an inline function.
  3. With -finstrument-functions, the instrumentation for the inlined function is inserted at the call-site, whereas with -finstrument-functions-after-inlining we only have instrumentation for the outer function. This means that when using-finstrument-functions-after-inlining you won’t be able to determine which functions are inlined and where.
Of course, this sounds exactly like what the documentation said it did, but sometimes you just need to look under the hood to convince yourself.
To put all of this another way, if we want to know about calls to inline functions in this trace we need to use -finstrument-functions because otherwise their instrumentation is silently removed by the compiler. Sadly, I was never able to get -finstrument-functions to work on a real example. I would always end up with linker errors deep in the Standard C++ Library which I was unable to figure out. My best guess is that inlining is often a heuristic, and this can somehow lead to subtle ODR (one-definition rule) violations when the optimizer makes different inlining decisions from different translation units. Luckily global constructors (which is what we care about) cannot possibly be inlined anyway, so this wasn’t a problem.
I suppose I should also mention that I still got tons of linker errors with -finstrument-functions-after-inlining as well, but I did figure those out. As best as I can tell, this option seems to imply –whole-archive linker semantics. Discussion of –whole-archive is outside the scope of this blog post, but suffice it to say that I fixed it by using linker groups (e.g. -Wl,–start-group and -Wl,–end-group) on the compiler command line. I was a bit surprised that we didn’t get these same linker errors without this option and still don’t totally understand why. If you happen to know why this option would change linker semantics, please let me know in the comments!

Implementing the Callback Hooks

If you’re astute, you may be wondering what in the world __cyg_profile_func_enter and __cyg_profile_func_exit are and why the program is even successfully linking in the first without giving undefined symbol reference errors, since the compiler is apparently trying to call some function we’ve never defined. Luckily, there are some options that allow us to see inside the linker’s algorithm so we can find out where it’s getting this symbol from to begin with. Specifically, -y should tell us how the linker is resolving . We’ll try it with a dummy program first and a symbol that we’ve defined ourselves, then we’ll try it with __cyg_profile_func_enter .
[email protected]:~/src/sandbox$ cat instr.cpp int main() {} [email protected]:~/src/sandbox$ clang++-9 -fuse-ld=lld -Wl,-y -Wl,main instr.cpp /usbin/../lib/gcc/x86_64-linux-gnu/crt1.o: reference to main /tmp/instr-5b6c60.o: definition of main
No surprises here. The C Runtime Library references main(), and our object file defines it. Now let’s see what happens with __cyg_profile_func_enter and -finstrument-functions-after-inlining.
[email protected]:~/src/sandbox$ clang++-9 -fuse-ld=lld -finstrument-functions-after-inlining -Wl,-y -Wl,__cyg_profile_func_enter instr.cpp /tmp/instr-8157b3.o: reference to __cyg_profile_func_enter /lib/x86_64-linux-gnu/libc.so.6: shared definition of __cyg_profile_func_enter
Now, we see that libc provides the definition, and our object file references it. Linking works a bit differently on Unix-y platforms than it does on Windows, but basically this means that if we define this function ourselves in our cpp file, the linker will just automatically prefer it over the shared library version. Working godbolt link without runtime output is here. So now you can kind of see where this is going, however there are still a couple of problems left to solve.
  1. We don’t want to do this for a full run of the program. We want to stop as soon as we reach main.
  2. We need a way to symbolize this trace.
The first problem is easy to solve. All we need to do is compare the address of the function being called to the address of main, and set a flag indicating we should stop tracing henceforth. (Note that taking the address of main is undefined behavior[1], but for our purposes it gets the job done, and we aren’t shipping this code, so ¯\_(ツ)_/¯). The second problem probably deserves a little more discussion though.

Symbolizing the Traces

In order to symbolize these traces, we need two things. First, we need to store the trace somewhere on persistent storage. We can’t expect to symbolize in real time with any kind of reasonable performance. You can write some C code to save the trace to some magic filename, or you can do what I did and just write it to stderr (this way you can pipe stderr to some file when you run it).
Second, and perhaps more importantly, for every address we need to write out the full path to the module the address belongs to. Your program loads many shared libraries, and in order to translate an address into a symbol, we have to know which shared library or executable the address actually belongs to. In addition, we have to be careful to write out the address of the symbol in the file on disk. When your program is running, the operating system could have loaded it anywhere in memory. And if we’re going to symbolize it after the fact we need to make sure we can still reference it after the information about where it was loaded in memory is lost. The linux function dladdr() gives us both pieces of information we need. A working godbolt sample with the exact implementation of our instrumentation hooks as they appear in our codebase can be found here.

Putting it All Together

Now that we have a file in this format saved on disk, all we need to do is symbolize the addresses. addr2line is one option, but I went with llvm-symbolizer as I find it more robust. I wrote a Python script to parse the file and symbolize each address, then print it in the same “visual” hierarchical format that the original output file is in. There are various options for filtering the resulting symbol list so that you can clean up the output to include only things that are interesting for your case. For example, I filtered out any globals that have boost:: in their name, because I can’t exactly go rewrite boost to not use global variables.
The script isn’t as simple as you would think, because simply crawling each line and symbolizing it would be unacceptably slow (when I tried this, it took over 2 hours before I finally killed the process). This is because the same address might appear thousands of times, and there’s no reason to run llvm-symbolizer against the same address multiple times. So there’s a lot of smarts in there to pre-process the address list and eliminate duplicates. I won’t discuss the implementation in more detail because it isn’t super interesting. But I’ll do even better and provide the source!
So after all of this, we can run any one of our internal targets to get the call tree, run it through the script, and then get output like this (actual output from a Roblox process, source file information removed):
excluded_symbols = [‘.\boost.*’]* excluded_modules = [‘/usr.\’]* /uslib/x86_64-linux-gnu/libLLVM-9.so.1: 140 unique addresses InterestingRobloxProcess: 38928 unique addresses /uslib/x86_64-linux-gnu/libstdc++.so.6: 1 unique addresses /uslib/x86_64-linux-gnu/libc++.so.1: 3 unique addresses Printing call tree with depth 2 for 29276 global variables. __cxx_global_var_init.5 (InterestingFile1.cpp:418:22) RBX::InterestingRobloxClass2::InterestingRobloxClass2() (InterestingFile2.cpp.:415:0) __cxx_global_var_init.19 (InterestingFile2.cpp:183:34) (anonymous namespace)::InterestingRobloxClass2::InterestingRobloxClass2() (InterestingFile2.cpp:171:0) __cxx_global_var_init.274 (InterestingFile3.cpp:2364:33) RBX::InterestingRobloxClass3::InterestingRobloxClass3()
So there you have it: the first half of the battle is over. I can run this script on every platform, compare results to understand what order our globals are actually initialized in in practice, then slowly migrate this code out of global initializers and into main where it can be deterministic and explicit.

Future Work

It occurred to me sometime after implementing this that we could make a general purpose profiling hook that exposed some public symbols (dllexport’ed if you speak Windows), and allowed a plugin module to hook into this dynamically. This plugin module could filter addresses using whatever arbitrary logic that it was interested in. One interesting use case I came up for this is that it could look up the debug information, check if the current address maps to the constructor of a function local static, and write out the address if so. This effectively allows us to gain a deeper understanding of the order in which our lazy statics are initialized. The possibilities are endless here.

Further Reading

If you’re interested in this kind of thing, I’ve collected a couple of my favorite references for this kind of topic.
  1. Various: The C++ Language Standard
  2. Matt Godbolt: The Bits Between the Bits: How We Get to main()
  3. Ryan O’Neill: Learning Linux Binary Analysis
  4. Linkers and Loaders: John R. Levine
  5. https://eel.is/c++draft/basic.exec#basic.start.main-3
Neither Roblox Corporation nor this blog endorses or supports any company or service. Also, no guarantees or promises are made regarding the accuracy, reliability or completeness of the information contained in this blog.
submitted by jaydenweez to u/jaydenweez [link] [comments]

2 Minutes Strategy Binary Options 2020 (IQ Options) - YouTube Binary Options Strategy 2020  100% WIN GUARANTEED ... Professional Binary Option Strategy  Trend Reversal ... IQ Option Strategy  Binary Option Indicator 90% - YouTube GOD OF INDICATORS - 99,99% work - binary option strategy ... 100% Win Strategy - $50 to $7K - Binary Options Newest ... BINARY OPTIONS STRATEGY - BEST Combinations OF Indicators ... NEVER LOSE 100% win Awesome Oscillator Indicator BINARY ... 2 Minutes Strategy Configuring SETTINGS And Indicators ... Binary Options 60 Seconds Indicator 99% Winning Live ...

Strategy is one of the most important factors in successful binary options trading. It is the framework from which you base your trade decisions, including your money management rules, and how you go about making money from the market. There is no one Holy Grail unfortunately, if there were then we’d all be using it! Download a huge collection of Binary options strategies, trading systems and Binary Options indicators 100% Free. Get your download link now. 1 Minute Binary Options Strategy With Bollinger Bands And Trend Indicator. The binary strategy described below is mainly based on bollinger bands with trend following indicator. This is a rapid entry strategy with 5 min expiry time. Just perfect for impatient binary traders. Average win/loss ratio: 78%. Chart Setup. Binary Indicators: Trend_Bars_BO, Bollinger Bands (20,2) Analysis Tools: N/A ... The most favorite binary options indicator. According to the result’s of the poll, the most favorite binary options indicator is, with 5385 votes, the MACD (Moving Average Convergence Divergence.) This comes as a little surprise, as my personal guess was the the most favorite would be Moving Average or Bollinger Bands. The full results can be found below. First comes the indicator’s name ... This indicator is worth trying to your test account and we hope that you can increase the profitability of your binary options. If you like you can also check out our other indicators like 60 Second No-Repaint Indicators or Price Action Indicator. This indicator is build based on the trend line, market over, or oversold strategy. It’s easy to ... The Best Binary Options Strategy. Our team at Trading Strategy Guides is ready to share with our beloved trading community our 60-second binary options strategy. We don’t just hope this strategy will make you money, we're certain it will. The mathematical model behind this binary options trading strategy has a proven market edge. Any binary options broker works for this indicator. You can use iqoptions which is the most popular binary options broker out there. The profitability of this indicator is awesome. You can get 75%-80% profitability using this indicator. Please test this indicator to your demo account first before going to a real account.

[index] [17105] [21034] [3009] [28308] [11428] [16212] [3607] [6430] [20738] [6968]

2 Minutes Strategy Binary Options 2020 (IQ Options) - YouTube

200% Deposit Bonus ExpertOption Link : https://bit.ly/2Lq3NUt-----... ★ TRY STRATEGY HERE http://iqopts.com/demo ★ WORK ON REAL MONEY http://iqopts.com/register ★ TOP-3 BEST BROKERS http://binares.com/brokers Make a decis... FOREX & BINARY SIGNALS http://nextwavetrading.com/SIGNALS/forex&binary OPEN YOUR ACCOUNT IQ OPTION HERE: http://nextwavetrading.com/IQoption IQ OPTION FREE D... The road to success through trading IQ option Best Bot Reviews Iq Option 2020 ,We make videos using this softwhere bot which aims to make it easier for you t... IQ Options -https://affiliate.iqoption.com/redir/...Please subscribe and leave a like for more videos.Online trading is a very risky investment/profession. It i... Professional Binary Option Strategy Trend Reversal Indicator Tested Immediately Easy Binary Indicator Download: https://provenbinarybot.com/trend-reversa... Hi Friends I will Show This Video Binary Options 60 Seconds Indicator Signal 99% Winning Live Trading Proof -----... All trading tutorial so that you understand how to get profits in trading, hope you avoid defeat you can download The Latest Bot /signal VfxAlert Please Click o... Make money anywhere, anytime! Binary Option https://bit.ly/3g92CHX Indicator 90% https://bit.ly/32S6FV0 START TRADING WITH FREE SIGNALS RIGHT NOW! The best t... get trading bots contact with telegram https://bit.ly/3aR8baT get pro or free signals https://bit.ly/2N5PLrp get strategy trading, visit my twitter https://b...

http://binary-optiontrade.fossepickvetuman.cf