first commit

.gitignore

@@ -0,0 +1,118 @@
+# 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

LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2023 
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

@@ -0,0 +1,7 @@
+# OPaC BlueMap
+
+This mod will show land claims from the [Open Parties and Claims](https://modrinth.com/mod/open-parties-and-claims) mod in the maps from the [BlueMap](https://modrinth.com/mod/bluemap) mod. This has currently only been tested on 1.19.2, but may work on newer versions.
+
+## Usage
+
+Simply install both the Open Parties and Claims mod as well as the BlueMap mod (and this mod), and you should be all set!

build.gradle

@@ -0,0 +1,116 @@
+plugins {
+    id 'fabric-loom' version '1.11-SNAPSHOT'
+    id 'io.github.juuxel.loom-quiltflower' version '1.8.0'
+    id 'maven-publish'
+}
+
+version = project.mod_version
+group = project.maven_group
+
+repositories {
+    maven {
+        name = "ParchmentMC"
+        url = "https://maven.parchmentmc.org"
+    }
+
+    maven {
+        name = "Fuzs Mod Resources"
+        url = "https://raw.githubusercontent.com/Fuzss/modresources/main/maven/"
+    }
+
+    maven { url = "https://maven.quiltmc.org/repository/release" }
+
+    exclusiveContent {
+        forRepository {
+            maven {
+                name = "Modrinth"
+                url = "https://api.modrinth.com/maven"
+            }
+        }
+        filter {
+            includeGroup "maven.modrinth"
+        }
+    }
+
+    maven { url = "https://jitpack.io" }
+}
+
+dependencies {
+    // To change the versions see the gradle.properties file
+    minecraft "com.mojang:minecraft:${project.minecraft_version}"
+    mappings(loom.layered {
+        officialMojangMappings()
+        parchment("org.parchmentmc.data:parchment-1.21.8:2025.09.14@zip")
+    })
+    modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
+
+    // Fabric API. This is technically optional, but you probably want it anyway.
+    modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
+
+    modImplementation("maven.modrinth:open-parties-and-claims:fabric-1.21.1-0.25.5")
+    modRuntimeOnly("fuzs.forgeconfigapiport:forgeconfigapiport-fabric:5.0.6") {
+        exclude(group: "net.fabricmc")
+        exclude(group: "net.fabricmc.fabric-api")
+    }
+
+    implementation("com.github.BlueMap-Minecraft:BlueMapAPI:2.7.0")
+    modRuntimeOnly("maven.modrinth:bluemap:3.13-fabric-1.19")
+
+    include(implementation("org.quiltmc.qup:json:0.2.0"))
+}
+
+processResources {
+    inputs.property "version", project.version
+    filteringCharset "UTF-8"
+
+    filesMatching("fabric.mod.json") {
+        expand "version": project.version
+    }
+}
+
+def targetJavaVersion = 21
+tasks.withType(JavaCompile).configureEach {
+    // ensure that the encoding is set to UTF-8, no matter what the system default is
+    // this fixes some edge cases with special characters not displaying correctly
+    // see http://yodaconditions.net/blog/fix-for-java-file-encoding-problems-with-gradle.html
+    // If Javadoc is generated, this must be specified in that task too.
+    it.options.encoding = "UTF-8"
+    if (targetJavaVersion >= 10 || JavaVersion.current().isJava10Compatible()) {
+        it.options.release = targetJavaVersion
+    }
+}
+
+java {
+    def javaVersion = JavaVersion.toVersion(targetJavaVersion)
+    if (JavaVersion.current() < javaVersion) {
+        toolchain.languageVersion = JavaLanguageVersion.of(targetJavaVersion)
+    }
+    archivesBaseName = project.archives_base_name
+    // Loom will automatically attach sourcesJar to a RemapSourcesJar task and to the "build" task
+    // if it is present.
+    // If you remove this line, sources will not be generated.
+    withSourcesJar()
+}
+
+jar {
+    from("LICENSE") {
+        rename { "${it}_${project.archivesBaseName}"}
+    }
+}
+
+// configure the maven publication
+publishing {
+    publications {
+        mavenJava(MavenPublication) {
+            from components.java
+        }
+    }
+
+    // See https://docs.gradle.org/current/userguide/publishing_maven.html for information on how to set up publishing.
+    repositories {
+        // Add repositories to publish to here.
+        // Notice: This block does NOT have the same function as the block in the top level.
+        // The repositories here will be used for publishing your artifact, not for
+        // retrieving dependencies.
+    }
+}

gradle.properties

@@ -0,0 +1,16 @@
+# Done to increase the memory available to gradle.
+org.gradle.jvmargs=-Xmx1G
+
+# Fabric Properties
+	# check these on https://modmuss50.me/fabric.html
+	minecraft_version=1.21.8
+	loader_version=0.17.2
+
+# Mod Properties
+	mod_version = 1.1.0
+	maven_group = io.github.gaming32
+	archives_base_name = opac-bluemap-integration
+
+# Dependencies
+	# check this on https://modmuss50.me/fabric.html
+	fabric_version=0.133.4+1.21.8

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-bin.zip
+networkTimeout=10000
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,245 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1,9 @@
+pluginManagement {
+    repositories {
+        maven {
+            name = 'Fabric'
+            url = 'https://maven.fabricmc.net/'
+        }
+        gradlePluginPortal()
+    }
+}

src/main/java/io/github/gaming32/opacbluemapintegration/ChunkPosDirection.java

@@ -0,0 +1,58 @@
+package io.github.gaming32.opacbluemapintegration;
+
+import net.minecraft.core.BlockPos;
+import net.minecraft.world.level.ChunkPos;
+
+public enum ChunkPosDirection {
+    LEFT(-1, 0),
+    FORWARD(0, 1),
+    RIGHT(1, 0),
+    BACKWARD(0, -1);
+
+    public final int x, z;
+    public final ChunkPos value;
+
+    ChunkPosDirection(int x, int z) {
+        this.x = x;
+        this.z = z;
+        this.value = new ChunkPos(x, z);
+    }
+
+    public ChunkPosDirection getLeft() {
+        return rotate(-1);
+    }
+
+    public ChunkPosDirection getRight() {
+        return rotate(1);
+    }
+
+    public ChunkPosDirection getOpposite() {
+        return rotate(2);
+    }
+
+    public ChunkPosDirection rotate(int clockwiseDistance) {
+        return values()[(ordinal() + clockwiseDistance) & 3];
+    }
+
+    public ChunkPos add(ChunkPos pos) {
+        return new ChunkPos(pos.x + x, pos.z + z);
+    }
+
+    public int getEdge(ChunkPos pos) {
+        return switch (this) {
+            case LEFT -> pos.getMinBlockX();
+            case FORWARD -> pos.getMaxBlockZ() + 1;
+            case RIGHT -> pos.getMaxBlockX() + 1;
+            case BACKWARD -> pos.getMinBlockZ();
+        };
+    }
+
+    public static BlockPos getCorner(ChunkPos pos, ChunkPosDirection a, ChunkPosDirection b) {
+        if (a == b || a.getOpposite() == b) {
+            throw new IllegalArgumentException("Corner can't be accessed with opposite directions");
+        }
+        return a.x != 0
+            ? new BlockPos(a.getEdge(pos), 0, b.getEdge(pos))
+            : new BlockPos(b.getEdge(pos), 0, a.getEdge(pos));
+    }
+}

src/main/java/io/github/gaming32/opacbluemapintegration/OpacBluemapConfig.java

@@ -0,0 +1,70 @@
+package io.github.gaming32.opacbluemapintegration;
+
+import org.quiltmc.qup.json.JsonReader;
+import org.quiltmc.qup.json.JsonWriter;
+
+import java.io.IOException;
+
+public class OpacBluemapConfig {
+    private int updateInterval = 12000; // Every 10 minutes
+    private float markerMinY = 75f;
+    private float markerMaxY = 75f;
+    private boolean depthTest = false;
+
+    public void read(JsonReader reader) throws IOException {
+        reader.beginObject();
+        while (reader.hasNext()) {
+            final String key;
+            switch (key = reader.nextName()) {
+                case "updateInterval" -> updateInterval = reader.nextInt();
+                case "markerMinY" -> markerMinY = reader.nextNumber().floatValue();
+                case "markerMaxY" -> markerMaxY = reader.nextNumber().floatValue();
+                case "depthTest" -> depthTest = reader.nextBoolean();
+                default -> {
+                    OpacBluemapIntegration.LOGGER.warn("Unknown OPaC BlueMap config key {}. Skipping.", key);
+                    reader.skipValue();
+                }
+            }
+        }
+        reader.endObject();
+    }
+
+    public void write(JsonWriter writer) throws IOException {
+        writer.beginObject();
+
+        writer.comment("How often, in ticks, the markers should be refreshed. Set to 0 to disable automatic refreshing.");
+        writer.comment("Default is 10 minutes (12000 ticks).");
+        writer.name("updateInterval").value(updateInterval);
+
+        writer.comment("The min and max Y for the markers. If these are the same, the marker will be drawn as a flat plane.");
+        writer.comment("Default is 75 to 75.");
+        writer.name("markerMinY").value(markerMinY);
+        writer.name("markerMaxY").value(markerMaxY);
+
+        writer.comment("If set to false, the markers won't be covered up by objects in front of it.");
+        writer.comment("Default is false.");
+        writer.name("depthTest").value(depthTest);
+
+        writer.endObject();
+    }
+
+    public int getUpdateInterval() {
+        return updateInterval;
+    }
+
+    public void setUpdateInterval(int updateInterval) {
+        this.updateInterval = updateInterval;
+    }
+
+    public float getMarkerMinY() {
+        return markerMinY;
+    }
+
+    public float getMarkerMaxY() {
+        return markerMaxY;
+    }
+
+    public boolean isDepthTest() {
+        return depthTest;
+    }
+}

src/main/java/io/github/gaming32/opacbluemapintegration/OpacBluemapIntegration.java

@@ -0,0 +1,284 @@
+package io.github.gaming32.opacbluemapintegration;
+
+import com.mojang.brigadier.Command;
+import com.mojang.brigadier.arguments.IntegerArgumentType;
+import com.mojang.logging.LogUtils;
+import de.bluecolored.bluemap.api.BlueMapAPI;
+import de.bluecolored.bluemap.api.BlueMapWorld;
+import de.bluecolored.bluemap.api.markers.ExtrudeMarker;
+import de.bluecolored.bluemap.api.markers.Marker;
+import de.bluecolored.bluemap.api.markers.MarkerSet;
+import de.bluecolored.bluemap.api.markers.ShapeMarker;
+import de.bluecolored.bluemap.api.math.Color;
+import net.fabricmc.api.ModInitializer;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
+import net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents;
+import net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents;
+import net.fabricmc.loader.api.FabricLoader;
+import net.minecraft.ChatFormatting;
+import net.minecraft.commands.arguments.TimeArgument;
+import net.minecraft.core.Registry;
+import net.minecraft.core.registries.Registries;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.util.Mth;
+import net.minecraft.world.level.ChunkPos;
+import org.apache.commons.lang3.StringUtils;
+import org.quiltmc.qup.json.JsonReader;
+import org.quiltmc.qup.json.JsonWriter;
+import org.slf4j.Logger;
+import xaero.pac.common.claims.player.api.IPlayerClaimPosListAPI;
+import xaero.pac.common.server.api.OpenPACServerAPI;
+
+import java.nio.file.Path;
+import java.util.*;
+import java.util.stream.Collectors;
+
+import static net.minecraft.commands.Commands.argument;
+import static net.minecraft.commands.Commands.literal;
+
+public class OpacBluemapIntegration implements ModInitializer {
+    public static final Logger LOGGER = LogUtils.getLogger();
+
+    private static final String MARKER_SET_KEY = "opac-bluemap-integration";
+    private static final Path CONFIG_FILE = FabricLoader.getInstance().getConfigDir().resolve("opac-bluemap.json5");
+
+    public static final OpacBluemapConfig CONFIG = new OpacBluemapConfig();
+
+    private static MinecraftServer minecraftServer;
+
+    private static int updateIn;
+
+    @Override
+    public void onInitialize() {
+        loadConfig();
+        BlueMapAPI.onEnable(OpacBluemapIntegration::updateClaims);
+        ServerLifecycleEvents.SERVER_STARTING.register(server -> minecraftServer = server);
+        ServerLifecycleEvents.SERVER_STOPPED.register(server -> minecraftServer = null);
+        CommandRegistrationCallback.EVENT.register((dispatcher, registryAccess, environment) -> {
+            dispatcher.register(literal("opac-bluemap")
+                .requires(s -> s.hasPermission(2))
+                .then(literal("refresh-now")
+                    .requires(s -> BlueMapAPI.getInstance().isPresent())
+                    .executes(ctx -> {
+                        final BlueMapAPI api = BlueMapAPI.getInstance().orElse(null);
+                        if (api == null) {
+                            ctx.getSource().sendFailure(Component.literal("BlueMap not loaded").withStyle(ChatFormatting.RED));
+                            return 0;
+                        }
+                        updateClaims(api);
+                        ctx.getSource().sendSuccess(
+                                () -> Component.literal("BlueMap OPaC claims refreshed").withStyle(ChatFormatting.GREEN),
+                            true
+                        );
+                        return Command.SINGLE_SUCCESS;
+                    })
+                )
+                .then(literal("refresh-in")
+                    .executes(ctx -> {
+                        ctx.getSource().sendSuccess(
+                                () -> Component.literal("OPaC BlueMap will refresh in ").append(
+                                Component.literal((updateIn / 20) + "s").withStyle(ChatFormatting.GREEN)
+                            ),
+                            true
+                        );
+                        return Command.SINGLE_SUCCESS;
+                    })
+                    .then(argument("time", TimeArgument.time())
+                        .executes(ctx -> {
+                            updateIn = IntegerArgumentType.getInteger(ctx, "time");
+                            ctx.getSource().sendSuccess(
+                                    () -> Component.literal("OPaC BlueMap will refresh in ").append(
+                                    Component.literal((updateIn / 20) + "s").withStyle(ChatFormatting.GREEN)
+                                ),
+                                true
+                            );
+                            return Command.SINGLE_SUCCESS;
+                        })
+                    )
+                )
+                .then(literal("refresh-every")
+                    .executes(ctx -> {
+                        ctx.getSource().sendSuccess(
+                                () -> Component.literal("OPaC BlueMap auto refreshes every ").append(
+                                Component.literal((CONFIG.getUpdateInterval() / 20) + "s").withStyle(ChatFormatting.GREEN)
+                            ),
+                            true
+                        );
+                        return Command.SINGLE_SUCCESS;
+                    })
+                    .then(argument("interval", TimeArgument.time())
+                        .executes(ctx -> {
+                            final int interval = IntegerArgumentType.getInteger(ctx, "interval");
+                            CONFIG.setUpdateInterval(interval);
+                            if (interval < updateIn) {
+                                updateIn = interval;
+                            }
+                            saveConfig();
+                            ctx.getSource().sendSuccess(
+                                    () -> Component.literal("OPaC BlueMap will auto refresh every ").append(
+                                    Component.literal((interval / 20) + "s").withStyle(ChatFormatting.GREEN)
+                                ),
+                                true
+                            );
+                            return Command.SINGLE_SUCCESS;
+                        })
+                    )
+                )
+                .then(literal("reload")
+                    .executes(ctx -> {
+                        loadConfig();
+                        if (CONFIG.getUpdateInterval() < updateIn) {
+                            updateIn = CONFIG.getUpdateInterval();
+                        }
+                        ctx.getSource().sendSuccess(
+                                () -> Component.literal("Reloaded OPaC BlueMap config").withStyle(ChatFormatting.GREEN),
+                            true
+                        );
+                        return Command.SINGLE_SUCCESS;
+                    })
+                )
+            );
+        });
+        ServerTickEvents.END_SERVER_TICK.register(server -> {
+            if (updateIn <= 0) return;
+            if (--updateIn <= 0) {
+                BlueMapAPI.getInstance().ifPresent(OpacBluemapIntegration::updateClaims);
+            }
+        });
+    }
+
+    public static void loadConfig() {
+        try (JsonReader reader = JsonReader.json5(CONFIG_FILE)) {
+            CONFIG.read(reader);
+        } catch (Exception e) {
+            LOGGER.warn("Failed to read {}.", CONFIG_FILE, e);
+        }
+        saveConfig();
+    }
+
+    public static void saveConfig() {
+        try (JsonWriter writer = JsonWriter.json5(CONFIG_FILE)) {
+            CONFIG.write(writer);
+        } catch (Exception e) {
+            LOGGER.error("Failed to write {}.", CONFIG_FILE, e);
+        }
+        LOGGER.info("Saved OPaC BlueMap config");
+    }
+
+    public static void updateClaims(BlueMapAPI blueMap) {
+        if (minecraftServer == null) {
+            LOGGER.warn("updateClaims called with minecraftServer == null!");
+            return;
+        }
+        LOGGER.info("Refreshing OPaC BlueMap markers");
+        OpenPACServerAPI.get(minecraftServer)
+            .getServerClaimsManager()
+            .getPlayerInfoStream()
+            .forEach(playerClaimInfo -> {
+                String name = playerClaimInfo.getClaimsName();
+                final String idName;
+                if (StringUtils.isBlank(name)) {
+                    idName = name = playerClaimInfo.getPlayerUsername();
+                    if (name.length() > 2 && name.charAt(0) == '"' && name.charAt(name.length() - 1) == '"') {
+                        name = name.substring(1, name.length() - 1) + " claim";
+                    } else {
+                        name += "'s claim";
+                    }
+                } else {
+                    idName = name;
+                }
+                final String displayName = name;
+                playerClaimInfo.getStream().forEach(entry -> {
+                    final BlueMapWorld world = blueMap.getWorld(ResourceKey.create(Registries.DIMENSION, entry.getKey())).orElse(null);
+                    if (world == null) return;
+                    final List<ShapeHolder> shapes = createShapes(
+                        entry.getValue()
+                            .getStream()
+                            .flatMap(IPlayerClaimPosListAPI::getStream)
+                            .collect(Collectors.toSet())
+                    );
+                    world.getMaps().forEach(map -> {
+                        final Map<String, Marker> markers = map
+                            .getMarkerSets()
+                            .computeIfAbsent(MARKER_SET_KEY, k ->
+                                MarkerSet.builder()
+                                    .toggleable(true)
+                                    .label("Open Parties and Claims")
+                                    .build()
+                            )
+                            .getMarkers();
+                        final float minY = CONFIG.getMarkerMinY();
+                        final float maxY = CONFIG.getMarkerMaxY();
+                        //noinspection SuspiciousNameCombination
+                        final boolean flatPlane = Mth.equal(minY, maxY);
+                        markers.keySet().removeIf(k -> k.startsWith(idName + "---"));
+                        for (int i = 0; i < shapes.size(); i++) {
+                            final ShapeHolder shape = shapes.get(i);
+                            markers.put(idName + "---" + i,
+                                // Yes these builders are the same. No they don't share a superclass (except for label).
+                                flatPlane
+                                    ? ShapeMarker.builder()
+                                        .label(displayName)
+                                        .fillColor(new Color(playerClaimInfo.getClaimsColor(), 150))
+                                        .lineColor(new Color(playerClaimInfo.getClaimsColor(), 255))
+                                        .shape(shape.baseShape(), minY)
+                                        .holes(shape.holes())
+                                        .depthTestEnabled(CONFIG.isDepthTest())
+                                        .build()
+                                    : ExtrudeMarker.builder()
+                                        .label(displayName)
+                                        .fillColor(new Color(playerClaimInfo.getClaimsColor(), 150))
+                                        .lineColor(new Color(playerClaimInfo.getClaimsColor(), 255))
+                                        .shape(shape.baseShape(), minY, maxY)
+                                        .holes(shape.holes())
+                                        .depthTestEnabled(CONFIG.isDepthTest())
+                                        .build()
+                            );
+                        }
+                    });
+                });
+            });
+        LOGGER.info("Refreshed OPaC BlueMap markers");
+        updateIn = CONFIG.getUpdateInterval();
+    }
+
+    public static List<ShapeHolder> createShapes(Set<ChunkPos> chunks) {
+        return createChunkGroups(chunks)
+            .stream()
+            .map(ShapeHolder::create)
+            .toList();
+    }
+
+    public static List<Set<ChunkPos>> createChunkGroups(Set<ChunkPos> chunks) {
+        final List<Set<ChunkPos>> result = new ArrayList<>();
+        final Set<ChunkPos> visited = new HashSet<>();
+        for (final ChunkPos chunk : chunks) {
+            if (visited.contains(chunk)) continue;
+            final Set<ChunkPos> neighbors = findNeighbors(chunk, chunks);
+            result.add(neighbors);
+            visited.addAll(neighbors);
+        }
+        return result;
+    }
+
+    public static Set<ChunkPos> findNeighbors(ChunkPos chunk, Set<ChunkPos> chunks) {
+        if (!chunks.contains(chunk)) {
+            throw new IllegalArgumentException("chunks must contain chunk to find neighbors!");
+        }
+        final Set<ChunkPos> visited = new HashSet<>();
+        final Queue<ChunkPos> toVisit = new ArrayDeque<>();
+        visited.add(chunk);
+        toVisit.add(chunk);
+        while (!toVisit.isEmpty()) {
+            final ChunkPos visiting = toVisit.remove();
+            for (final ChunkPosDirection dir : ChunkPosDirection.values()) {
+                final ChunkPos offsetPos = dir.add(visiting);
+                if (!chunks.contains(offsetPos) || !visited.add(offsetPos)) continue;
+                toVisit.add(offsetPos);
+            }
+        }
+        return visited;
+    }
+}

src/main/java/io/github/gaming32/opacbluemapintegration/ShapeHolder.java

@@ -0,0 +1,131 @@
+package io.github.gaming32.opacbluemapintegration;
+
+import com.flowpowered.math.vector.Vector2d;
+import de.bluecolored.bluemap.api.math.Shape;
+import net.minecraft.core.BlockPos;
+import net.minecraft.world.level.ChunkPos;
+
+import java.util.*;
+import java.util.stream.Collectors;
+
+public record ShapeHolder(Shape baseShape, Shape... holes) {
+    public static ShapeHolder create(Set<ChunkPos> chunks) {
+        return new ShapeHolder(
+            createBaseShape(chunks),
+            OpacBluemapIntegration.createChunkGroups(cutoutChunks(chunks))
+                .stream()
+                .map(ShapeHolder::createBaseShape)
+                .toArray(Shape[]::new)
+        );
+    }
+
+    private static Shape createBaseShape(Set<ChunkPos> chunks) {
+        ChunkPos firstChunk = getBound(chunks, Math::min);
+        while (!chunks.contains(firstChunk)) {
+            // Step right until we hit a real chunk
+            firstChunk = ChunkPosDirection.RIGHT.add(firstChunk);
+        }
+        final List<Vector2d> points = new ArrayList<>();
+        points.add(new Vector2d(firstChunk.getMinBlockX(), firstChunk.getMinBlockZ()));
+
+        ChunkPos current = firstChunk;
+        ChunkPosDirection direction = ChunkPosDirection.RIGHT;
+        do {
+            points.add(vector(ChunkPosDirection.getCorner(current, direction, direction.getRight())));
+            final ChunkPos next = direction.add(current);
+            if (chunks.contains(next)) {
+                final ChunkPos right = direction.getRight().add(next);
+                if (chunks.contains(right)) {
+                    current = right;
+                    direction = direction.getRight();
+                } else {
+                    current = next;
+                }
+            } else {
+                direction = direction.getLeft();
+            }
+        } while (!current.equals(firstChunk) || direction != ChunkPosDirection.RIGHT);
+
+        return new Shape(simplifyPoints(points));
+    }
+
+    private static Set<ChunkPos> cutoutChunks(Set<ChunkPos> chunks) {
+        final ChunkPos minChunk = getBound(chunks, Math::min);
+        final ChunkPos maxChunk = getBound(chunks, Math::max);
+
+        final Queue<ChunkPos> toVisit = new ArrayDeque<>();
+        for (int x = minChunk.x; x <= maxChunk.x; x++) {
+            for (int z = minChunk.z; z <= maxChunk.z; z++) {
+                if (x > minChunk.x && x < maxChunk.x && z > minChunk.z && z < maxChunk.z) continue;
+                final ChunkPos chunk = new ChunkPos(x, z);
+                if (chunks.contains(chunk)) continue;
+                toVisit.add(chunk);
+            }
+        }
+
+        final Set<ChunkPos> outsideChunks = new HashSet<>(toVisit);
+        while (!toVisit.isEmpty()) {
+            final ChunkPos chunk = toVisit.remove();
+            for (final ChunkPosDirection dir : ChunkPosDirection.values()) {
+                final ChunkPos offsetPos = dir.add(chunk);
+                if (
+                    offsetPos.x < minChunk.x || offsetPos.x > maxChunk.x ||
+                        offsetPos.z < minChunk.z || offsetPos.z > maxChunk.z ||
+                        chunks.contains(offsetPos) || !outsideChunks.add(offsetPos)
+                ) continue;
+                toVisit.add(offsetPos);
+            }
+        }
+
+        return ChunkPos.rangeClosed(minChunk, maxChunk)
+            .filter(c -> !chunks.contains(c) && !outsideChunks.contains(c))
+            .collect(Collectors.toSet());
+    }
+
+    private static Vector2d vector(BlockPos pos) {
+        return new Vector2d(pos.getX(), pos.getZ());
+    }
+
+    private static List<Vector2d> simplifyPoints(List<Vector2d> points) {
+        if (points.size() < 4) {
+            return points;
+        }
+
+        final List<Vector2d> result = new ArrayList<>();
+        result.add(points.get(0));
+
+        for (int i = 1; i < points.size() - 1; i++) {
+            final Vector2d last = points.get(i - 1);
+            final Vector2d point = points.get(i);
+            final Vector2d next = points.get(i + 1);
+            if (!point.sub(last).normalize().equals(next.sub(point).normalize())) {
+                result.add(point);
+            }
+        }
+
+        final Vector2d lastPoint = points.get(points.size() - 1);
+        if (!lastPoint.equals(points.get(0))) {
+            result.add(lastPoint);
+        }
+
+        return result;
+    }
+
+    private static ChunkPos getBound(Iterable<ChunkPos> chunks, IntSelector selector) {
+        final Iterator<ChunkPos> iterator = chunks.iterator();
+        final ChunkPos first = iterator.next();
+        int x = first.x;
+        int z = first.z;
+        while (iterator.hasNext()) {
+            final ChunkPos pos = iterator.next();
+            x = selector.select(x, pos.x);
+            z = selector.select(z, pos.z);
+        }
+        return new ChunkPos(x, z);
+    }
+
+    @FunctionalInterface
+    private interface IntSelector {
+        int select(int a, int b);
+    }
+}

src/main/resources/fabric.mod.json

@@ -0,0 +1,31 @@
+{
+  "schemaVersion": 1,
+  "id": "opac-bluemap-integration",
+  "version": "${version}",
+  "name": "OPaC BlueMap",
+  "description": "Syncs your Open Parties and Claims land claims to your BlueMap maps",
+  "authors": [
+    "Gaming32"
+  ],
+  "contact": {
+    "repo": "https://github.com/Gaming32/opac-bluemap-integration"
+  },
+  "license": "MIT",
+  "icon": "assets/opac-bluemap-integration/icon.png",
+  "environment": "*",
+  "entrypoints": {
+    "main": [
+      "io.github.gaming32.opacbluemapintegration.OpacBluemapIntegration"
+    ]
+  },
+  "mixins": [
+    "opac-bluemap-integration.mixins.json"
+  ],
+  "depends": {
+    "fabricloader": ">=0.14.0",
+    "fabric": "*",
+    "minecraft": ">=1.19.2",
+    "bluemap": ">=3.13",
+    "openpartiesandclaims": ">=0.17.6"
+  }
+}

src/main/resources/opac-bluemap-integration.mixins.json

@@ -0,0 +1,13 @@
+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "io.github.gaming32.opacbluemapintegration.mixin",
+  "compatibilityLevel": "JAVA_17",
+  "mixins": [
+  ],
+  "client": [
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  }
+}