2d – High Speed ​​Collision Detection Using the Separator Axis Theorem

I'm using the SAT and the minimal translation vector used to detect and handle collisions in my 2D game. It works fine for normal speeds (ie when the speed is low enough so that one object does not pass through one wall from one image to the other), but for high-speed cases, I'm not sure how to handle it with the help of SAT. .

Diagram

Page Speed ​​- Why does Google Pagespeed use two different metrics for the first Content Paint (FCP)?

I check the speed of some of the best pages of my site and want to collect data on the loading time so I can compare them in the months to come.

I'm using PageSpeed ​​Insights to measure my pages, but I'm confused because First Contentful Paint (FCP) is listed twice on the page, but with different records:

Screenshot of PageSpeed ​​insights

Is there a reason why they are different?

Page Speed ​​- Why does Google Pagespeed have two different metrics for FCP?

I check the speed of some of the best pages of my site and want to collect data on the loading time so I can compare them in the months to come.

I'm using PageSpeed ​​Insights to measure my pages, but I'm confused because First Contentful Paint (FCP) is listed twice on the page, but with different records:

Screenshot of PageSpeed ​​insights

Is there a reason why they are different?

architecture – Middleware to optimize speed between Web server and database server

We have a web service that receives a maximum throughput of 50,000 messages / second. However, our database can process a maximum of 30,000 messages / second. What kind of middleware architecture should I use to optimize the balance of the load? It must be built from scratch. Should I opt for an event architecture?

windows – Is the speed of the USB version important for input devices?

We know that USB v1 – v2 -v3 has different features and transfer speed / signal. I understand that storage devices will probably benefit from the speed feature, but does speed affect input devices such as the mouse, keyboard, and game controller?

I found an old USB hub adapter / splitter which I do not currently know which USB version, I guess it is v1 + and I doubt it is v2.0. If I plug it into a laptop and plug my input devices into the splitter, is there a noticeable difference in speed (such as the delay time, etc.)?

What's new in the speed report in the Google Search Console?

What's new in the speed report in the Google Search Console?

applications – critical processes in Android that are sensitive to speed?

I'm trying to increase the battery life of my phone by changing the power regulators. One of the regulators: "powersave" sets the frequency of the processor to its lowest possible value. I'm concerned about knowing there are critical tasks for Android (or the Linux kernel) that are very sensitive to frequency, that is, these tasks may fail or become extremely slow, creating a bottleneck causing a noticeable delay.

How to speed up search engine indexing?

How to speed up search engine indexing?

pathfinder 1e – What is the best way to keep track of the time that passes between two encounters with a capacity that regenerates at a speed of 1 per minute?

introduction

In Pathfinder, each round lasts 6 seconds. Ward Ward's temporary hit points regenerate at a rate of 1 THP every 10 rounds. To determine how quickly they regenerate between fights, we need to determine how long ordinary actions last without a fight. Since Force Ward limits the number of THP at the character level, apart from a dungeon, it is probably safe to assume that they will regenerate completely between each fight.

In a dungeon, it's a bit more complicated. We can divide into two categories the most common actions that PCs perform inside a dungeon: move and use their skills.

Movement

The rules are not very clear on how PCs move outside the fight. However, rules on modes of travel may provide some guidance:

Modes of movement

When they move at different scales of movement, creatures walk, jostle or run.

  • Walk: A walk represents an unhurried but determined movement (3 miles per
    hour for a non-unused adult human).
  • shove: A hustle is a jog
    (about 6 miles per hour for an unencumbered human). A character in motion
    his speed twice in one turn, or by moving that speed in the same
    around that he or she performs a standard action or some other movement
    action, knocks when he or she moves.
    (emphasis added)
  • Run:
    • Run (x3) – displacement of three
      speed is a racing rhythm for a character in heavy armor (about 7
      miles per hour for a man on the plate).
    • Run (x4) – displacement of four
      times speed is a racing pace for a character in the light, medium, or not
      armor (about 12 miles per hour for an unhealed human, or 9 miles
      per hour for a human in mail coat).

The description of "Hustle" is how the PCs usually act in combat – standard action and movement action. On this basis, I consider the off-combat moves as "marches" (one action per turn), unless the players specifically tell me that they are hurrying (for example, because they want to fight several battles before their improvements disappear). . This gives a good indication of how much time the PCs need to move from one area to another on a drawn map (remember to adapt to challenging terrain, etc.).

skills

Some skills, such as Disable Device, set clear rules on the duration of use of the skill (usually between 1 and 2d4 rounds, depending on the complexity of the device). Others, such as Diplomacy, give advice but leave room for maneuver to the minister ("Suggesting a plan of action" takes at least a minute, but perhaps much more).

Unfortunately, the official rules give little guidance on the time that Perception takes, which is probably the most common skill that PCs will use in a dungeon. The published scenarios suggest that the duration varies considerably depending on what the PCs are trying to do.

The best guide I've found comes from Lion Library. Searching for research documents with a perception check takes 30 minutes per computer and per room in a small room (up to about 25 squares on a 5-foot board), one hour for a medium-sized room, and two hours for a large room the map is 264 squares). If more PCs help, the time is divided between them, so it takes 10 minutes to 3 PCs to search a small room. A DM can use it to determine the time it would take a PC to search for a room, depending on the number of computers and what it contains (searching for a library probably takes longer than looking for a typical piece).

java – BitcoinJ: the synchronization speed, 3 blocks per second is normal?

I would like to set up a web portfolio. so I try to put the complete blockchain in the MySQL store. Bitcoin Core is installed and I have configured a BitconJ Java program for it to connect to my local Bitcoin Core. But I only get 3 blocks / sec, which seems slow. Is it possible to speed up blockchain download? and here is my code that downloads the complete blockchain in the MySQL store.

public class MySQLDB {

    public static void main(String() args) throws BlockStoreException, UnknownHostException {
        FullPrunedBlockStore store = new MySQLFullPrunedBlockStore(TestNet3Params.get(), 10,
                "localhost", "btc_test", "myname", "my-password");

        FullPrunedBlockChain vChain = new FullPrunedBlockChain(TestNet3Params.get(), store);
        vChain.setRunScripts(false);

        PeerGroup vPeerGroup = new PeerGroup(TestNet3Params.get(), vChain);
        vPeerGroup.setUseLocalhostPeerWhenPossible(true);
        vPeerGroup.addAddress(InetAddress.getLocalHost());

        vPeerGroup.start();
        vPeerGroup.downloadBlockChain();
    }
}