first commit

pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.bitnix</groupId>
+    <artifactId>MyWorlds</artifactId>
+    <version>1.0</version>
+    <packaging>jar</packaging>
+
+    <name>MyWorlds</name>
+
+    <properties>
+        <java.version>21</java.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <repositories>
+        <repository>
+            <id>papermc</id>
+            <url>https://repo.papermc.io/repository/maven-public/</url>
+        </repository>
+    </repositories>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.papermc.paper</groupId>
+            <artifactId>paper-api</artifactId>
+            <version>1.21.8-R0.1-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>MyWorlds</finalName>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.13.0</version>
+                <configuration>
+                    <release>21</release>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>

src/main/java/com/bitnix/myworlds/NamespacedKeys.java

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+package com.bitnix.myworlds;
+
+import org.bukkit.NamespacedKey;
+import org.bukkit.plugin.java.JavaPlugin;
+
+public final class NamespacedKeys {
+
+    public static NamespacedKey ACTION_KEY;
+
+    private NamespacedKeys() {
+    }
+
+    public static void init(JavaPlugin plugin) {
+        ACTION_KEY = new NamespacedKey(plugin, "action");
+    }
+}

src/main/resources/config.yml

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+settings:
+  quick-teleport-single-world: false
+  world-name-format: "mw_%player%_%number%"
+  world-border-size: 10000
+  default-gamemode: SURVIVAL
+  no-limit-permission-default: 0
+
+multiverse:
+  normal-command: "mv create %world% normal"
+  flat-command: "mv create %world% normal -t flat"
+  amplified-command: "mv create %world% normal -a true"
+  delete-command: "mv delete %world%"
+
+limits:
+  - permission: "myworlds.limit.1"
+    amount: 1
+  - permission: "myworlds.limit.2"
+    amount: 2
+  - permission: "myworlds.limit.3"
+    amount: 3
+  - permission: "myworlds.limit.5"
+    amount: 5
+
+world-types:
+  normal: true
+  flat: true
+  amplified: true
+
+messages:
+  no-permission: "&cYou do not have permission."
+  player-only: "&cOnly players can use this command."
+  reloaded: "&aMyWorlds config reloaded."
+  no-worlds: "&cYou do not own any worlds yet."
+  world-limit-reached: "&cYou have reached your world limit of &e%limit%&c."
+  no-world-limit: "&cYou are not allowed to create any worlds."
+  invalid-world-type: "&cInvalid world type."
+  world-creating: "&eCreating your world: &f%world%&e..."
+  world-created: "&aWorld created: &e%world%&a."
+  world-failed: "&cFailed to create world."
+  world-not-found: "&cThat world could not be found."
+  teleported: "&aTeleported to &e%world%&a."
+  only-own-worlds: "&cYou can only manage your own worlds."
+  no-access-world: "&cYou do not have access to that world."
+  multiverse-missing: "&cMultiverse-Core was not found or is not enabled."
+  player-not-found: "&cThat player is not online."
+  invited-player: "&aInvited &e%player% &ato world &e%world%&a."
+  uninvited-player: "&e%player% &chas been removed from world &e%world%&c."
+  you-were-invited: "&aYou were invited to world &e%world% &aby &e%owner%&a."
+  already-invited: "&e%player% &cis already invited to &e%world%&c."
+  not-invited: "&e%player% &cis not invited to &e%world%&c."
+  pvp-enabled: "&aPvP enabled for &e%world%&a."
+  pvp-disabled: "&cPvP disabled for &e%world%&c."
+  invalid-pvp-state: "&cUse on/off."
+  world-deleted: "&cWorld deleted: &e%world%&c."
+  delete-failed: "&cFailed to delete world &e%world%&c."
+  confirm-delete: "&cClick again to confirm deletion of &e%world%&c."
+  world-info-owner: "&7Owner: &e%owner%"
+  world-info-type: "&7Type: &e%type%"
+  world-info-pvp: "&7PvP: &e%pvp%"
+  world-info-invites: "&7Invited: &e%invites%"
+
+gui:
+  main:
+    title: "&8My Worlds"
+    size: 27
+    items:
+      generate-normal:
+        material: GRASS_BLOCK
+        slot: 10
+        name: "&aGenerate Normal World"
+        lore:
+          - "&7Create a standard world."
+
+      generate-flat:
+        material: DIRT
+        slot: 12
+        name: "&eGenerate Flat World"
+        lore:
+          - "&7Create a flat world."
+
+      generate-amplified:
+        material: STONE
+        slot: 14
+        name: "&bGenerate Amplified World"
+        lore:
+          - "&7Create an amplified world."
+
+      list-worlds:
+        material: CHEST
+        slot: 16
+        name: "&fYour Worlds"
+        lore:
+          - "&7Click to view your worlds."
+
+      info:
+        material: BOOK
+        slot: 22
+        name: "&6World Info"
+        lore:
+          - "&7Owned: &e%owned%"
+          - "&7Limit: &e%limit%"
+
+  list:
+    title: "&8Your Worlds"
+    size: 54
+    back-button:
+      material: ARROW
+      slot: 53
+      name: "&cBack"
+      lore:
+        - "&7Return to main menu."
+
+  manage:
+    title: "&8Manage World"
+    size: 27
+    items:
+      teleport:
+        material: ENDER_PEARL
+        slot: 11
+        name: "&aTeleport"
+        lore:
+          - "&7Teleport to this world."
+
+      toggle-pvp:
+        material: DIAMOND_SWORD
+        slot: 13
+        name: "&cToggle PvP"
+        lore:
+          - "&7Toggle PvP for this world."
+
+      invited-info:
+        material: PLAYER_HEAD
+        slot: 15
+        name: "&eInvites"
+        lore:
+          - "&7Invited players:"
+          - "&f%invites%"
+
+      delete-world:
+        material: BARRIER
+        slot: 22
+        name: "&4Delete World"
+        lore:
+          - "&7Delete this world."
+          - "&cThis cannot be undone."
+
+      back:
+        material: ARROW
+        slot: 26
+        name: "&cBack"
+        lore:
+          - "&7Return to world list."

src/main/resources/plugin.yml

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+name: MyWorlds
+version: 1.1
+main: com.bitnix.myworlds.MyWorldsPlugin
+api-version: '1.21'
+author: bitnix
+description: GUI-based personal world manager using Multiverse-Core.
+commands:
+  myworlds:
+    description: Open your worlds GUI or manage your worlds
+    usage: /myworlds [help|list|generate|invite|uninvite|pvp|reload]
+    aliases: [myworld, mw]
+permissions:
+  myworlds.use:
+    default: false
+  myworlds.admin:
+    default: op
+  myworlds.invite:
+    default: false
+  myworlds.pvp:
+    default: false

target/classes/config.yml

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+settings:
+  quick-teleport-single-world: false
+  world-name-format: "mw_%player%_%number%"
+  world-border-size: 10000
+  default-gamemode: SURVIVAL
+  no-limit-permission-default: 0
+
+multiverse:
+  normal-command: "mv create %world% normal"
+  flat-command: "mv create %world% normal -t flat"
+  amplified-command: "mv create %world% normal -a true"
+  delete-command: "mv delete %world%"
+
+limits:
+  - permission: "myworlds.limit.1"
+    amount: 1
+  - permission: "myworlds.limit.2"
+    amount: 2
+  - permission: "myworlds.limit.3"
+    amount: 3
+  - permission: "myworlds.limit.5"
+    amount: 5
+
+world-types:
+  normal: true
+  flat: true
+  amplified: true
+
+messages:
+  no-permission: "&cYou do not have permission."
+  player-only: "&cOnly players can use this command."
+  reloaded: "&aMyWorlds config reloaded."
+  no-worlds: "&cYou do not own any worlds yet."
+  world-limit-reached: "&cYou have reached your world limit of &e%limit%&c."
+  no-world-limit: "&cYou are not allowed to create any worlds."
+  invalid-world-type: "&cInvalid world type."
+  world-creating: "&eCreating your world: &f%world%&e..."
+  world-created: "&aWorld created: &e%world%&a."
+  world-failed: "&cFailed to create world."
+  world-not-found: "&cThat world could not be found."
+  teleported: "&aTeleported to &e%world%&a."
+  only-own-worlds: "&cYou can only manage your own worlds."
+  no-access-world: "&cYou do not have access to that world."
+  multiverse-missing: "&cMultiverse-Core was not found or is not enabled."
+  player-not-found: "&cThat player is not online."
+  invited-player: "&aInvited &e%player% &ato world &e%world%&a."
+  uninvited-player: "&e%player% &chas been removed from world &e%world%&c."
+  you-were-invited: "&aYou were invited to world &e%world% &aby &e%owner%&a."
+  already-invited: "&e%player% &cis already invited to &e%world%&c."
+  not-invited: "&e%player% &cis not invited to &e%world%&c."
+  pvp-enabled: "&aPvP enabled for &e%world%&a."
+  pvp-disabled: "&cPvP disabled for &e%world%&c."
+  invalid-pvp-state: "&cUse on/off."
+  world-deleted: "&cWorld deleted: &e%world%&c."
+  delete-failed: "&cFailed to delete world &e%world%&c."
+  confirm-delete: "&cClick again to confirm deletion of &e%world%&c."
+  world-info-owner: "&7Owner: &e%owner%"
+  world-info-type: "&7Type: &e%type%"
+  world-info-pvp: "&7PvP: &e%pvp%"
+  world-info-invites: "&7Invited: &e%invites%"
+
+gui:
+  main:
+    title: "&8My Worlds"
+    size: 27
+    items:
+      generate-normal:
+        material: GRASS_BLOCK
+        slot: 10
+        name: "&aGenerate Normal World"
+        lore:
+          - "&7Create a standard world."
+
+      generate-flat:
+        material: DIRT
+        slot: 12
+        name: "&eGenerate Flat World"
+        lore:
+          - "&7Create a flat world."
+
+      generate-amplified:
+        material: STONE
+        slot: 14
+        name: "&bGenerate Amplified World"
+        lore:
+          - "&7Create an amplified world."
+
+      list-worlds:
+        material: CHEST
+        slot: 16
+        name: "&fYour Worlds"
+        lore:
+          - "&7Click to view your worlds."
+
+      info:
+        material: BOOK
+        slot: 22
+        name: "&6World Info"
+        lore:
+          - "&7Owned: &e%owned%"
+          - "&7Limit: &e%limit%"
+
+  list:
+    title: "&8Your Worlds"
+    size: 54
+    back-button:
+      material: ARROW
+      slot: 53
+      name: "&cBack"
+      lore:
+        - "&7Return to main menu."
+
+  manage:
+    title: "&8Manage World"
+    size: 27
+    items:
+      teleport:
+        material: ENDER_PEARL
+        slot: 11
+        name: "&aTeleport"
+        lore:
+          - "&7Teleport to this world."
+
+      toggle-pvp:
+        material: DIAMOND_SWORD
+        slot: 13
+        name: "&cToggle PvP"
+        lore:
+          - "&7Toggle PvP for this world."
+
+      invited-info:
+        material: PLAYER_HEAD
+        slot: 15
+        name: "&eInvites"
+        lore:
+          - "&7Invited players:"
+          - "&f%invites%"
+
+      delete-world:
+        material: BARRIER
+        slot: 22
+        name: "&4Delete World"
+        lore:
+          - "&7Delete this world."
+          - "&cThis cannot be undone."
+
+      back:
+        material: ARROW
+        slot: 26
+        name: "&cBack"
+        lore:
+          - "&7Return to world list."

target/classes/plugin.yml

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+name: MyWorlds
+version: 1.1
+main: com.bitnix.myworlds.MyWorldsPlugin
+api-version: '1.21'
+author: bitnix
+description: GUI-based personal world manager using Multiverse-Core.
+commands:
+  myworlds:
+    description: Open your worlds GUI or manage your worlds
+    usage: /myworlds [help|list|generate|invite|uninvite|pvp|reload]
+    aliases: [myworld, mw]
+permissions:
+  myworlds.use:
+    default: false
+  myworlds.admin:
+    default: op
+  myworlds.invite:
+    default: false
+  myworlds.pvp:
+    default: false

target/maven-archiver/pom.properties

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+#Generated by Maven
+#Sun Jun 07 23:20:08 EDT 2026
+artifactId=MyWorlds
+groupId=com.bitnix
+version=1.0

target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst

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+com/bitnix/myworlds/MyWorldsPlugin$GuiContext.class
+com/bitnix/myworlds/MyWorldsPlugin$LimitEntry.class
+com/bitnix/myworlds/MyWorldsPlugin.class
+com/bitnix/myworlds/NamespacedKeys.class

target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst

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+/home/bitnix/Desktop/MyWorlds/src/main/java/com/bitnix/myworlds/MyWorldsPlugin.java
+/home/bitnix/Desktop/MyWorlds/src/main/java/com/bitnix/myworlds/NamespacedKeys.java