I have a navigation program, and if there are 4 waypoints, I would like to highlight on the details list which part you are currently on, and also I could show the distance to the next waypoint and the total distance.
So, you may have:
Go right on Main Street, 1.3 miles
Go left on Broadway, .5 miles
Go left on Concord Blvd, 2 miles
But, how do I determine when a phone starts on a different waypoint.
Using the LocationManager you can set several ways for updates on a particular program. Use LocationManager.addProximityAlert() to be alerted if you're in a particular distance to a waypoint. Additionally you can use Location classes to get distance for example waypoint.distanceTo(currentLocation);.
The solution I am going with is to use a passive provider, so that if the navigator is being used then my application will still know where the user is.
Then, just keep track of where they were previously and where they are now, and look at the difference in how far they are from the waypoint, and once they get to a certain distance then let them know and change to the new waypoint.
The addProximityAlert made it difficult to know which waypoint to change to and it didn't work as well as I was hoping, and since I need to know where the user is to update their marker, there was no reason not to just add some calculations at the same time.
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Is there anyway to create an armorstand that is invisible to players and can float in air? I'm trying to make something like a boomerang that can be thrown but that requires an armorstand to show the boomerang itself. For example: Video. I use spigot-api-1.16.5-R0.1-20210220.225230-24 as my api.
Yes it is possible. You need to spawn in a armor stand, then disable the gravity for it using armorstand.setGravity(false), store it in a array, and then create a loop that runs every tick, and teleports it to the desired location.
I want to predict a standing to sitting transition and vice versa of a user in Android. But I guess, currently Google's DetectedActivity Api gives everything but sitting-standing transition. What are the other ways of doing this? Also, I have tried gathering the accelerometer values, but don't know how to get a pattern from the values and then later predict transitions using that pattern. So how should I proceed?
According to the documentation:
public static final int TILTING
The device angle relative to gravity changed significantly. This often occurs when a device is picked up from a desk or a user who is sitting stands up.
I have highlighted the key phrase. This would appear to be the answer you seek.
I am creating an app that uses Google Maps to show locations of stores. I have an array of 5900+ locations that I would like to have on the map. I am currently using https://github.com/MadsFrandsen/MapStateListener to make markers in a location visible and hide all other markers that are not in the screen range.
However the problem is mainly how loading 5900 markers onto the map on initialization takes quite a few seconds and reduces the devices speed and I keep retrieving errors about skipped frames.
What methods do I have that will best allow me to have these locations available when a user scrolls from state to state (as I load 50KM away from initial device location) ?
I don't think any user will find a visual filled with 5900+ markers useful.
There's no way to make this problem go faster unless you can figure out a meaningful way to display less data. You need to filter those locations better. Maybe only displaying those stores within a 10 mile radius of the current GPS location would work better. It'll render faster, and your users will thank you for not confusing them.
I pretty much doubt you need to display all 6k markers on your map at once as your view will get rather crowdy. However if you really think that makes sense, there's library that you may find useful -> Android Maps Extensions
demo: https://play.google.com/store/apps/details?id=pl.mg6.android.maps.extensions.demo
code: https://www.google.com/url?q=https://github.com/mg6maciej/android-maps-extensions/&sa=D&usg=AFQjCNEnOeOZB4NbvpjQldmChbVbzCZV7Q
First, you should group your markers into one if they are too close to each other when user zooms out. Then you should update your map only if user stops scrolling, zooming. It will take you a possibility to make UI faster.
You should add so many markers on map so user can see on the screen
I'm a beginning computer science student and we've been asked to complete a project that animates random generated car objects moving to randomly generated parking spots on a city map grid. I've developed a GUI for the buttons, text fields, and text areas. Everything works as required except for at the end of the animation, when all cars have reached parking spots, I need to display analytics in my JTextArea. My buttons are set up properly and I will show you where the code takes place below:
else if (e.getSource() == start) {
setAnimate(true);
if(simulator.simulationFinished()) {
createAnalytics();
}
}
So here I have implemented an action listener on the button "start" that begins the animation. Currently it:
currently it begins the animation and all the cars travel to the parking spots as intended.
it displays analytics that are derived from before the animation began (Analytics include: car ID, number of moves, average number of spots tried, average distance travelled)
then the animation will conclude.
If I press the start button again it will display the proper analytics.
I know that in order for the program to display the right analytics the moment the program finishes I most likely need a while loop, however I haven't been able to dream anything up that will not create an infinite loop and require me to manually terminate the program via console.
while(!simulator.simulationFinished()) {
if(simulator.simulationFinished() == true)break; {
createAnalytics();
}
}
I've also tried this among several hundred other variations of all the loops in existence. Following from my logic, I need the while loop so that it will keep checking to see if the simulation is finished so that I can execute my method that generates analytics, but if don't give the while loop something to do it just goes on forever and crashes. I'm at a loss, any help would be appreciated. Thanks.
First: no, you don't need a while loop necessarily. You could use the observer pattern instead (for example) and your object would be notified as soon as the simulation had finished. As to your question: the if inside the while is obviously superfluous (as is the == true). The real problem seems to be that simulator.simulationFinished() never returns true. Could you post the code of that function and the code (and any code that directly influences the return value of it)?
Without going into details, there's a serious problem with your while loop.
See, it loops as long as simulator.simulationFinished() returns false.
However, within the loop, you check for the opposite - which will never happen.
I would recommend using listeners of some sort, although the requirement is not clear enough for me to advise any further.
I need to make kind of a game in Java but I am a total beginner. It has to be applicable to the web and I need to use images on it and action listeners. So, do you recommend any site to know how to begin?
The description of the game (it is not really a game but it implements things that usually are in a game) is this:
Show a matrix of images of 3x3 elements, then, hide them and put instead empty squares. The images shown in the matrix, must remain in the lower part of the screen just below the empty squares and they must be randomly positioned. The user, must click one image and put it on the correct empty square. The result, must be, how many images were correctly positioned, the time it took to end the game, the time between mouse clicked and released for each image.
For additional information, I want you to know that this application is for a friend of mine who studies medicine. He wants this program to test patients who accident and receive hits on their heads. You may think that the description I gave you may not be a good software for that purpose, and in fact, it may be not, but, once I know the management of all that is required (Images, MouseListeners, how to introduce it to a web etc), I will be able to make a better product. So, please tell me, how can I begin?. What do I need to know?
I would start here. Except for some startup boilerplate and the restrictions of the sandbax (which, based on your description, you will b unlikely to encounter), there is no fundamental difference in an applet from normal code.