Initial commit

.gitignore

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+# User-specific stuff
+.idea/
+
+*.iml
+*.ipr
+*.iws
+
+# IntelliJ
+out/
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+.gradle
+build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Cache of project
+.gradletasknamecache
+
+**/build/
+
+# Common working directory
+run/
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar

build.gradle.kts

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+plugins {
+    id 'java'
+    id 'io.papermc.paperweight.userdev' version("1.5.5")
+}
+
+group = 'me.youhavetrouble'
+version = '1.0'
+
+repositories {
+    mavenCentral()
+    maven {
+        name = "papermc-repo"
+        url = "https://repo.papermc.io/repository/maven-public/"
+    }
+    maven {
+        name = "sonatype"
+        url = "https://oss.sonatype.org/content/groups/public/"
+    }
+}
+
+dependencies {
+    paperweight.paperDevBundle("1.20-R0.1-SNAPSHOT")
+    compileOnly "io.papermc.paper:paper-api:1.20-R0.1-SNAPSHOT"
+}
+
+def targetJavaVersion = 17
+java {
+    def javaVersion = JavaVersion.toVersion(targetJavaVersion)
+    sourceCompatibility = javaVersion
+    targetCompatibility = javaVersion
+    if (JavaVersion.current() < javaVersion) {
+        toolchain.languageVersion = JavaLanguageVersion.of(targetJavaVersion)
+    }
+}
+
+tasks.withType(JavaCompile).configureEach {
+    if (targetJavaVersion >= 10 || JavaVersion.current().isJava10Compatible()) {
+        options.release = targetJavaVersion
+    }
+}
+
+processResources {
+    def props = [version: version]
+    inputs.properties props
+    filteringCharset 'UTF-8'
+    filesMatching('paper-plugin.yml') {
+        expand props
+    }
+}

gradle/wrapper/gradle-wrapper.properties

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+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip

settings.gradle

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+rootProject.name = 'NotJustNameplates'

src/main/java/me/youhavetrouble/notjustnameplates/NotJustNameplates.java

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+package me.youhavetrouble.notjustnameplates;
+
+import org.bukkit.plugin.java.JavaPlugin;
+
+public final class NotJustNameplates extends JavaPlugin {
+
+    @Override
+    public void onEnable() {
+        // Plugin startup logic
+
+    }
+
+    @Override
+    public void onDisable() {
+        // Plugin shutdown logic
+    }
+}

src/main/java/me/youhavetrouble/notjustnameplates/listeners/TeamManagementListener.java

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+package me.youhavetrouble.notjustnameplates.listeners;
+
+import me.youhavetrouble.notjustnameplates.teams.PacketTeam;
+import net.minecraft.network.protocol.game.ClientboundSetPlayerTeamPacket;
+import net.minecraft.world.scores.PlayerTeam;
+import net.minecraft.world.scores.Scoreboard;
+import org.bukkit.craftbukkit.v1_20_R1.entity.CraftPlayer;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+
+import java.util.HashSet;
+
+public class PlayerJoinLeaveListener implements Listener {
+
+    private final Scoreboard scoreboard = new Scoreboard();
+    private final PlayerTeam team = new PlayerTeam(scoreboard, "notjustnameplates");
+    private final HashSet<String> players = new HashSet<>();
+
+    public PlayerJoinLeaveListener() {
+        team.setNameTagVisibility(PlayerTeam.Visibility.NEVER);
+    }
+
+    @EventHandler(ignoreCancelled = true, priority = EventPriority.HIGHEST)
+    public void onPlayerJoin(PlayerJoinEvent event) {
+        Player joiner = event.getPlayer();
+        for (Player player : event.getPlayer().getServer().getOnlinePlayers()) {
+            addPlayerToTeam(joiner, player);
+        }
+        PacketTeam.sendTeamMembers(joiner);
+    }
+
+    @EventHandler(ignoreCancelled = true, priority = EventPriority.HIGHEST)
+    public void onPlayerQuit(PlayerQuitEvent event) {
+        Player leaver = event.getPlayer();
+        for (Player player : event.getPlayer().getServer().getOnlinePlayers()) {
+            removePlayerFromTeam(leaver, player);
+        }
+    }
+
+    private void addPlayerToTeam(Player player, Player target) {
+        CraftPlayer craftPlayer = (CraftPlayer) target;
+        players.add(player.getName());
+
+        ClientboundSetPlayerTeamPacket teamCreatePacket = ClientboundSetPlayerTeamPacket.createAddOrModifyPacket(team, true);
+        craftPlayer.getHandle().connection.send(teamCreatePacket);
+
+        ClientboundSetPlayerTeamPacket packet = ClientboundSetPlayerTeamPacket.createPlayerPacket(team, player.getName(), ClientboundSetPlayerTeamPacket.Action.ADD);
+
+        craftPlayer.getHandle().connection.send(packet);
+    }
+
+    private void removePlayerFromTeam(Player player, Player target) {
+        ClientboundSetPlayerTeamPacket packet = ClientboundSetPlayerTeamPacket.createPlayerPacket(team, player.getName(), ClientboundSetPlayerTeamPacket.Action.REMOVE);
+        CraftPlayer craftPlayer = (CraftPlayer) target;
+        players.remove(player.getName());
+        craftPlayer.getHandle().connection.send(packet);
+    }
+
+    private void sendTeamMembers(Player target) {
+        ClientboundSetPlayerTeamPacket packet = ClientboundSetPlayerTeamPacket.createMultiplePlayerPacket(team, players, ClientboundSetPlayerTeamPacket.Action.ADD);
+        CraftPlayer craftPlayer = (CraftPlayer) target;
+        craftPlayer.getHandle().connection.send(packet);
+    }
+
+}

src/main/java/me/youhavetrouble/notjustnameplates/nameplates/Nameplate.java

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+package me.youhavetrouble.notjustnameplates.nameplates;public class Nameplate {
+}

src/main/resources/paper-plugin.yml

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+name: NotJustNameplates
+version: '${version}'
+main: me.youhavetrouble.notjustnameplates.NotJustNameplates
+api-version: 1.20
+authors: [YouHaveTrouble]
+description: Nameplates using display entities
+website: https://youhavetrouble.me