codename_B's list of plugins under 50 lines of code AKA the under 50 challenge

Uhhh....

codename_B I'm a bit disappointed...what the heck is this?

Code:

event.setCancelled((event.getEntity() instanceof Player) ? true : false);

D:

 

This is a short form for:

Code:java

if (event.getEntity() instanceof Player) {
//Cancel the event
event.setCancelled(true);
} else {
//Don't cancel the event
event.setCancelled(false);
}

See here if you are interested in some more details.

 

Yeah, but it's a long form for:

Code:

event.setCancelled(event.getEntity() instanceof Player);

 

True. I think you might say that there is always a better alternative, if at least on of the return values is true or false. But it becomes handy if you have something like this:

Code:java

executor.sendMessage((player != null ? player.getName() : args[1]) + "has been...");

 

I know what ternary operators are and how they're used.

What I got irritated about and what desht picked up on was the HORRIBLE redundancy of using a ternary operator with the second and third arguments being boolean values. You're making the computer perform several extra operations for absolutely no reason.

 

Code:java

package com.fuzzoland.EndOfTheWorld;
 
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.world.EndOfTheWorldEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
public class Main extends JavaPlugin implements Listener{
 
    public void onEnable(){
        getServer().getPluginManager().registerEvents(this, this);
    }
 
    @EventHandler(priority=EventPriority.HIGH)
    private void onEndOfTheWorld(EndOfTheWorldEvent event){
        if(event.getAsteroidImpact() == true){
            event.commence();
        }else{
            event.setCancelled(true);
        }
    }
}

 

== true. Wat, just use if (event.getAsteroidImpact())

 

How about if(event.getAsteroid().isApproaching()) ?

Players will drop their heads when they get killed in PvP, using the new API in 31 lines; with the permission PlayerHeads.use.

Code:java

package com.fuzzoland.PlayerHeads;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.event.*;
import org.bukkit.event.entity.PlayerDeathEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.SkullMeta;
import org.bukkit.plugin.java.JavaPlugin;
public class Main extends JavaPlugin implements Listener{
    public void onEnable(){
        getServer().getPluginManager().registerEvents(this, this);
    }
    @EventHandler
    public void onPlayerDeath(PlayerDeathEvent event){
        if(event.getEntity() instanceof Player){
            Player killed = (Player) event.getEntity();
            if(event.getEntity().getKiller() instanceof Player){
                Player killer = (Player) event.getEntity().getKiller();
                if(killer.hasPermission("PlayerHeads.use")){
                    Location location = killed.getLocation();
                    ItemStack skullItem = new ItemStack(Material.SKULL_ITEM, 1, (byte) 3);
                    SkullMeta metaData = (SkullMeta) skullItem.getItemMeta();
                    metaData.setOwner(killed.getName());
                    skullItem.setItemMeta(metaData);
                    location.getWorld().dropItemNaturally(location, skullItem);
                }
            }
        }
    }
}

Get a welcome book when first joining the server with a custom title, author name and content all set in a configuration file, using the new API in 33 lines. You can also use colours in the books' content.

Class:

Code:java

package com.fuzzoland.WelcomeBook;
import java.util.List;
import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.event.*;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.inventory.*;
import org.bukkit.inventory.meta.BookMeta;
import org.bukkit.plugin.java.JavaPlugin;
public class Main extends JavaPlugin implements Listener{
    public void onEnable(){
        getConfig().options().copyDefaults(true);
        saveConfig();
        Bukkit.getServer().getPluginManager().registerEvents(this, this);
    }
    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event){
        Player player = event.getPlayer();
        if(!player.hasPlayedBefore()){
            List <String> pages = getConfig().getStringList("BookPages");
            ItemStack bookItem = new ItemStack(Material.WRITTEN_BOOK, 1);
            BookMeta metaData = (BookMeta) bookItem.getItemMeta();
            metaData.setTitle(getConfig().getString("BookName"));
            metaData.setAuthor(getConfig().getString("AuthorName"));
            for(String page : pages){
                metaData.addPage(page.replaceAll("(&([a-f0-9]))", "\u00A7$2"));
            }
            bookItem.setItemMeta(metaData);
            player.getInventory().addItem(bookItem);
        }
    }
}

Example config:

Code:

BookName: Welcome Book
AuthorName: Herobrine
BookPages:
- '&2This is the first page of the book.'
- '&6This is the second page of the book.'
- '&9This is the third page of the book.'
- '&aE&bt&cc.'

Result:
View attachment 12038

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

 

Jeez... People can't see humor in things these days.

 

Niiicee. That's a great plugin for the under 50 challenge! ^_^

You should make it official and upload it to bukkitdev.

 

I already did before you even asked! http://dev.bukkit.org/server-mods/welcomebook
Going to be expanding the plugin with new great features.

 

I added the exact same thing into FirstJoinPlus 4 hours before you. Only I used text files because I thought string lists would be too confusing to make line breaks with.

Edit: Oh, didn't even see you mentioned FirstJoinPlus in the description!

 

Right after I posted the project I saw it was already in your plugin. But I'm expanding mine with a lot more features now anyway.

EDIT: Taking full advantage of the new API! http://dev.bukkit.org/server-mods/welcomebook/files/2-welcome-book-v2-0/

 

Now a <50 lines of code plugin for a random gigantic firework show.

 

And thanks to one of the newer changes in 1.4.6-R0.2-SNAPSHOT, we can spawn fireworks

 

44 line plugin to store the IPs of players logging in, and notify you if two different players are using the same IP. Designed to help server admins detect players using alternate accounts.

Permission node to get notified is altmaster.notify

Code:java

import java.io.File;
import java.util.List;
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerLoginEvent;
import org.bukkit.plugin.java.JavaPlugin;
public class AltMaster extends JavaPlugin implements Listener{  
    private File recordsFile;
    private YamlConfiguration records;  
    public void onEnable(){
        getDataFolder().mkdirs();
        recordsFile = new File(getDataFolder().getPath() + "/records.yml");
        try{
            if(!recordsFile.exists())
                recordsFile.createNewFile();
            records = new YamlConfiguration();
            records.options().pathSeparator('>');
            records.load(recordsFile);
            getLogger().info("Loaded records"); }
        catch(Exception e){ e.printStackTrace(); }
        Bukkit.getPluginManager().registerEvents(this, this); }
    public void onDisable(){
        try{ records.save(recordsFile); }
        catch(Exception e){
            getLogger().info("Failed to save records");
            e.printStackTrace(); } }    
    @EventHandler
    public void logLogins(PlayerLoginEvent event){
        if(event.getAddress() == null) return;
        String playerName = event.getPlayer().getName();
        String address = event.getAddress().toString();
        List<String> addressUsers = records.getStringList(address);
        if(!addressUsers.contains(playerName))
            addressUsers.add(playerName);
        if(addressUsers.size() > 1){
            Bukkit.getConsoleSender().sendMessage("" + ChatColor.DARK_BLUE + ChatColor.BOLD + "WARNING: " + ChatColor.BLUE + playerName + " logs in from the same address as: " + addressUsers);
            for(Player player : Bukkit.getOnlinePlayers()) if(player.hasPermission("altmaster.notify")) player.sendMessage("" + ChatColor.DARK_BLUE + ChatColor.BOLD + "WARNING: " + ChatColor.BLUE + playerName + " logs in from the same address as: " + addressUsers);
        }
        records.set(address, addressUsers);
        onDisable(); } }

 

AmoebaMan
You can make it 2 lines shorter by compacting the imports.

Ok this plugin made me think a lot, and I'm quite proud of it. It lets you type /RF <length> <frequency> <distance> and it will start a firework show at the location where you typed in the command. Length being how long the firework show should last in seconds, Frequency being the interval between every firework in milliseconds, and Distance being the distance between the 3 firework spawn points in metres.

All fireworks are completely random, the plugin chooses 3 random colours, 1 random type, whether to have a trail, whether to flicker, and a random height in every firework. The original plugin was just 40 lines and it would start fireworks at one location, but then I realised at the cost of 10 extra lines I could make that into 3 different locations for fireworks to launch from, making the finished plugin exactly 50 plugins. The only limitation is that you can only have 1 firework show at a time, I even put a check in to make sure that you can't start a 2nd one otherwise it would create an infinite loop.

EDIT: Thanks to Bone008 I managed to eliminate having to use the task ID which limited it to 1 firework show at a time. My new version of the plugin let's you have as many firework shows as you want at any one time (provided the hashMapID isn't drawn twice, one in many billion chance for that to happen lol). It is now 2 lines less as well.

Code:

Code:java

package com.fuzzoland.RandomFireworks;
import java.util.*;
import org.bukkit.*;
import org.bukkit.FireworkEffect.Type;
import org.bukkit.command.*;
import org.bukkit.entity.*;
import org.bukkit.inventory.meta.FireworkMeta;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.scheduler.BukkitRunnable;
public class Main extends JavaPlugin{
    final HashMap<Long, Long> fireworkTimer = new HashMap<Long, Long>();
    public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, final String[] args){
        if(sender.hasPermission("RF.use") && sender instanceof Player && commandLabel.equalsIgnoreCase("RF") && args.length == 3){
            final Long hashMapID = (new Random()).nextLong();
            final Player player = (Player) sender;
            final Location location = player.getLocation();
            final List<Type> type = new ArrayList<Type>();
            final List<Color> colour = new ArrayList<Color>();
            Collections.addAll(type, Type.BALL, Type.BALL_LARGE, Type.BURST, Type.STAR, Type.CREEPER);
            Collections.addAll(colour, Color.AQUA, Color.BLACK, Color.BLUE, Color.FUCHSIA, Color.GRAY, Color.GREEN, Color.LIME, Color.MAROON, Color.NAVY, Color.OLIVE, Color.ORANGE, Color.PURPLE, Color.RED, Color.SILVER, Color.TEAL, Color.WHITE, Color.YELLOW);
            fireworkTimer.put(hashMapID, System.currentTimeMillis());
            new BukkitRunnable(){
                public void run(){
                    Firework firework1 = player.getWorld().spawn(new Location(location.getWorld(), location.getX() + Integer.parseInt(args[2]), location.getY(), location.getZ()), Firework.class);
                    Firework firework2 = player.getWorld().spawn(location, Firework.class);
                    Firework firework3 = player.getWorld().spawn(new Location(location.getWorld(), location.getX(), location.getY(), location.getZ() + Integer.parseInt(args[2])), Firework.class);
                    FireworkMeta data1 = (FireworkMeta) firework1.getFireworkMeta();
                    FireworkMeta data2 = (FireworkMeta) firework2.getFireworkMeta();
                    FireworkMeta data3 = (FireworkMeta) firework3.getFireworkMeta();
                    data1.addEffects(FireworkEffect.builder().withColor(colour.get((new Random()).nextInt(17))).withColor(colour.get((new Random()).nextInt(17))).withColor(colour.get((new Random()).nextInt(17))).with(type.get((new Random()).nextInt(5))).trail((new Random()).nextBoolean()).flicker((new Random()).nextBoolean()).build());
                    data2.addEffects(FireworkEffect.builder().withColor(colour.get((new Random()).nextInt(17))).withColor(colour.get((new Random()).nextInt(17))).withColor(colour.get((new Random()).nextInt(17))).with(type.get((new Random()).nextInt(5))).trail((new Random()).nextBoolean()).flicker((new Random()).nextBoolean()).build());
                    data3.addEffects(FireworkEffect.builder().withColor(colour.get((new Random()).nextInt(17))).withColor(colour.get((new Random()).nextInt(17))).withColor(colour.get((new Random()).nextInt(17))).with(type.get((new Random()).nextInt(5))).trail((new Random()).nextBoolean()).flicker((new Random()).nextBoolean()).build());
                    data1.setPower((new Random()).nextInt(2) + 2);
                    data2.setPower((new Random()).nextInt(2) + 2);
                    data3.setPower((new Random()).nextInt(2) + 2);
                    firework1.setFireworkMeta(data1);
                    firework2.setFireworkMeta(data2);
                    firework3.setFireworkMeta(data3);
                    if((System.currentTimeMillis() - fireworkTimer.get(hashMapID) > (Integer.parseInt(args[0]) * 1000))){
                        fireworkTimer.remove(hashMapID);
                        this.cancel();
                    }
                }
            }.runTaskTimer(this, 0, Integer.parseInt(args[1]) / 50);
        }
        return false;
    }
}

Results:
Here are some results using frequency of 200 milliseconds and a distance of 5 metres apart. This was before multiple firework show support.
imgur.com/PBgPe,SwGEj

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

 

Lol, didn't know there was a color called FUCHSIA"FUCHSIA"

 

Lol yeah and another odd thing is that there's 17 colours, unlike the 16 dyes. Maybe they put a colour for the default firework that doesn't have a dye?

 

Is there a way to spawn *just* the explosion yet as occurs in the net.minecraft.server.EntityFireworks.java?

Code:

world.broadcastEntityEffect(this, (byte)17);

Otherwise someone is going to have to do some tasty reflection work (not me).

 

Ah damn I was ninja'd.. oh well post anyways.

January 1 Fireworks

Code:java

package com.modcrafting.under50;
 
import java.util.Calendar;
import java.util.Random;
import org.bukkit.Bukkit;
import org.bukkit.Color;
import org.bukkit.FireworkEffect;
import org.bukkit.Location;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Firework;
import org.bukkit.inventory.meta.FireworkMeta;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;
public class Fireworks extends JavaPlugin{
int timer,id = 0;
Random gen = new Random();
public void onEnable(){
id = this.getServer().getScheduler().scheduleSyncRepeatingTask(this, new Runnable(){
@Override
public void run() {
if(Calendar.getInstance().get(Calendar.YEAR)>2012&&timer<600&&Bukkit.getServer().getOnlinePlayers().length>0){
for(Player player:Bukkit.getServer().getOnlinePlayers()){
for(int i = gen.nextInt(10);i>0;i--){
Location loc = player.getLocation();
Firework item = (Firework) loc.getWorld().spawnEntity(loc, EntityType.FIREWORK);
FireworkMeta fwm = item.getFireworkMeta();
fwm.setPower(gen.nextInt(4)+1);
fwm.addEffect(FireworkEffect.builder().with(FireworkEffect.Type.values()[gen.nextInt(FireworkEffect.Type.values().length)]).flicker(gen.nextBoolean()).trail(gen.nextBoolean()).withColor(Color.fromRGB(gen.nextInt(255), gen.nextInt(255), gen.nextInt(255))).withFade(Color.fromRGB(gen.nextInt(255), gen.nextInt(255), gen.nextInt(255))).build());
item.setFireworkMeta(fwm);
}
}
timer++;
if(timer>600){
Bukkit.getScheduler().cancelTask(id);
Bukkit.getPluginManager().disablePlugin(Bukkit.getPluginManager().getPlugin("Fireworks"));
}
}
}
}, 20L, 20L);
}
}

I don't understand why the "builder" is setup the way it is but whatever.

 

A nano version of my FireworkEffectPlayer
http://forums.bukkit.org/threads/util-fireworkeffectplayer-v1-0.119424/

Play fireworks at a specific location, without the wait for the Bukkit api!

Code:

package com.bpermissions;
import java.lang.reflect.Method;
import org.bukkit.entity.Firework;
import org.bukkit.inventory.meta.FireworkMeta;
import org.bukkit.*;
public class FireworkEffectPlayerNano {
    private Object[] dataStore = new Object[5];
    public void playFirework(World world, Location loc, FireworkEffect fe) throws Exception {
        Firework fw = (Firework) world.spawn(loc, Firework.class);
        if(dataStore[0] == null) dataStore[0] = getMethod(world.getClass(), "getHandle");
        if(dataStore[2] == null) dataStore[2] = getMethod(fw.getClass(), "getHandle");
        dataStore[3] = ((Method) dataStore[0]).invoke(world, (Object[]) null);
        dataStore[4] = ((Method) dataStore[2]).invoke(fw, (Object[]) null);
        if(dataStore[1] == null) dataStore[1] = getMethod(dataStore[3].getClass(), "broadcastEntityEffect");
        FireworkMeta data = (FireworkMeta) fw.getFireworkMeta();
        data.addEffect(fe);
        fw.setFireworkMeta(data);
        ((Method) dataStore[1]).invoke(dataStore[3], new Object[] {dataStore[4], (byte) 17});
        fw.remove();
    }
    private static Method getMethod(Class<?> cl, String method) {
        for(Method m : cl.getMethods()) if(m.getName().equals(method)) return m;
        return null;
    }
}

I know it's not technically a plugin, but shhh...
25 lines!

 

codename_B you need to add YoFuzzy3 's plugin to the OP

 

I think he stopped putting plugins into the OP a while ago because of the character limit per post.

 

Right you are.

 

Nice reflection. But couldn't you use getWorld from the location object.

 

Indeed you could, convenience took precedence. I just wanted to have a nice CraftWorld to getHandle from

 

Not sure if somebody already made something like this. But I made a lightweight Announcer plugin that supports all formatting codes in just 25 lines. It lets you set an interval and supports up to 2,147,483,647 messages in the configuration file.

Code:java

package com.fuzzoland.Announcer;
import java.util.List;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.scheduler.BukkitRunnable;
public class Main extends JavaPlugin{
    private static int count;
    public void onEnable(){
        getConfig().options().copyDefaults(true);
        saveConfig();    
        final List<String> messages = getConfig().getStringList("Announcer.Messages");
        final int interval = getConfig().getInt("Announcer.Interval") * 20;
        count = 1;
        new BukkitRunnable(){
            public void run(){
                if(count < messages.size()){
                    getServer().broadcastMessage(messages.get(count - 1).replaceAll("(&([a-f0-9l-or]))", "\u00A7$2"));
                    count++;
                }else if(count == messages.size()){
                    getServer().broadcastMessage(messages.get(count - 1).replaceAll("(&([a-f0-9l-or]))", "\u00A7$2"));
                    count = 1;
                }
            }
        }.runTaskTimer(this, interval, interval);
    }
}

 

YoFuzzy3 room for shrinkage there - replace lines 12-23 with:

Code:java

 
private int count = 0;
new BukkitRunnable(){
  public void run(){
    getServer().broadcastMessage(messages.get(count).replaceAll("(&([a-f0-9l-or]))", "\u00A7$2"));
    count = (count + 1) % messages.size();
  }
}.runTaskTimer(this, interval, interval);
 

(and delete line 6)

 

Nice thinking.