Saving X,Y,and Z coordinates.

I know. You looked at the topic and said "Ha! That's so easy!". Well, you probably did. If your good. But, unfortunately for me, I am not exactly the most experienced programmer you'll ever mthateet, so this is unknown to me. So, how could I have it so that is someone does /savecoordinate or something like that so that it saves it to a file that can be accessed in another session?

 

You could always just use essentials and create a warp point for the coordinates. It actually saves them as a text file too, per warp.

What are you trying to do with these coordinates when you have them saved?

 

If you want to do this in a plugin, you can store them in a string (or even in your own custom object) then you can just append the string to a text file.
i.e.

String locationToString(Location loc){
return loc.getWorld().getName() + "," + loc.getBlockX() + "," + loc.getBlockY() + "," + loc.getBlockZ();
}

Location stringToLocation(String loc){
String pieces[] = loc.split(",");
if(pieces.length != 4)
return null;

World w = Bukkit.getWorld(pieces[0]);

if(w == null)
return null;

int x = 0, y = 0, z = 0;

try{
x = Integer.parseInt(pieces[1]);
y = Integer.parseInt(pieces[2]);
z = Integer.parseInt(pieces[3]);
}catch(NumberFormatException e){
return null;
}

return new Location(w, x, y, z);
}

Although if you used this, when you turn the String to a Location, you'll have to do a null check, as you can't use a location that equals null. (You could also add in values for float and yaw)

 

Hmm... I like it, but how would I store multiples? Would I make a separate text file for each? Or should I skip YAML altogether and go toMySQL? Forgive me if im asking too much, but you seem to know a lot

 

If you want to, you can store each location with a key, like a waypoint. I suggest that you load the file into a hashmap on the plugin enable, and save them on disable. You don't have to save each location in a new file, you can simply have each location on a new line. So, for example, if you wanted a command like /savecoordinate (Although perhaps /wp new or /wp create might be easier) you could have the argument /savecoordinate [Location Name]

for example:

Code:

HashMap<String, String> locations = new HashMap<String, String>();
 
public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args){
 
if(!(sender instanceof Player){
sender.sendMessage("That command is only available ingame");
return true;
}
 
Player player = (Player) sender;
 
if(commandLabel.equalsIgnoreCase("savecoordinate"){
if(args.length != 1){
player.sendMessage("Usage: /savecoordinate [Location Name] ");
return true;
}
String key = args[0].toLowerCase();
Location playerLocation = player.getLocation();
String location = locationToString(playerLocation); //From above example
locations.put(key, location);
player.sendMessage("Your location has been saved");
return true;
}
 
//You may also want a command to return to the location saved before
if(commandLabel.equalsIgnoreCase("loadcoordinate"){
if(args.length != 1){
player.sendMessage("Usage: /loadcoordinate [Location Name] ");
return true;
}
 
String key = args[0].toLowerCase();
 
if(!locations.containsKey(key)){
player.sendMessage("Location not found");
return true;
}
 
Location loc = stringToLocation(locations.get(key)); //Also from last post
 
if(loc == null){
player.sendMessage("Error with saved location, check savefile on plugin disable");
return true;
}
 
player.sendMessage("Sending you to location " + key);
player.teleport(location);
return true;
}
 
}

Although you probably didn't need all that

Anyway, in onEnable you can load your text file with a method like so:

Code:

public void loadLocations(){
File file = new File(path); //Where path is the path to the text file containing the locations, ie "locations.txt"
if(!file.exists()){
Bukkit.getLogger().info("Failed to load locations file.");
return;
}
 
try{
BufferedReader br = new BufferedReader(new FileReader(file));
String line;
while((line = br.readLine()) != null){
String pieces[] = line.split(":");
if(pieces.length != 2){ //If the line does not follow the format key:location it won't be loaded
continue;
}
locations.put(pieces[0], pieces[1]); //locations is the HashMap from the above example
}
Bukkit.getLogger().info("Locations loaded.");
}catch(Exception e){
Bukkit.getLogger().severe("Failed to read locations file: " + e.getMessage());
}
}

also in onDisable, or whenever you want to save your locations you could use something like:

Code:

public void saveLocations(){
try{
BufferedWriter writer = new BufferedWriter(new FileWriter(new File(path), true)); //Where path is once again the path to the locations file
for(String key : locations.keySet()){
writer.write(key + ":" + locations.get(key));
writer.flush();
}
writer.close();
Bukkit.getLogger().info("Locations saved.");
}catch(Exception e){
Bukkit.getLogger().severe("Failed to write to locations file: " + e.getMessage());
}
}

Hope this helps if you want to do something like having different players have different locations, you'll have to make up a class to store them in.

Also, i haven't done much on permissions, so i'll leave them to you

 

Dude, I swear. You are fricking awsome!

 

Hey, Wood, I tried it out, and in runs pretty smoothly for 1 saved location, but It doesn't save more than one (More than 1 save results in them saving next to each other, which causes errors. I tried using "/n", but it doesn't work. Do you have any suggestions?

 

lol, sorry i forgot. Try changing the line
writer.write(key + ":" + locations.get(key));
to:
writer.append(key + ":" + locations.get(key) + "\n");
or:
writer.append(key + ":" + locations.get(key) + "\n\r");
although i think either will work.


EDIT: Also, i wasn't watching this post, if you quote me, or tag me I'll get an alert

 

Well, its odd.( i used /n/r) The file dosen't end up printing on a new line, but it works. Thanks, man.

I have another question about something else related to this. (Btw, your code is amazing. Thanks) If I wanted to turn warps (thats not what they'll actually be, but its a good example)on and off, I would I keep track of on and offs? I assume you would use hashmapping, but im not very good at that . So how would you do it?​

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

auhsoj_ Moved to correct forum

 

WoodMKII why not using YamlConfiguration instead of a own defined HashMap?
auhsoj_ use an ArrayList to store the warpnames that are 'on'

Code:java

// Define the ArrayList somewhere
public static ArrayList<String> enabledWarps = new ArrayList<String>();
// To enable one, the following line
enabledWarps.add("warpname");
// And to disable one
if(enabledWarps.contains("warpname"))
{
    enabledWarps.remove("warpname");
}
// To check if it is enabled
if(enabledWarps.contains("warpname"))
 

 

Thanks. I should have thought of that

 

Just if you need more help check out "thebcbroz" on YouTube and his plugin tutorial 43 it all about this stuff

 

lol, I think your problem might be that you are using forward slash, "/", instead of backslash "\"

 

Oh. Yeah, your right