Separate library from Minestom

BENCHMARK.md

@@ -17,7 +17,7 @@ public class ScuffedBenchmark {
             System.out.println("Starting iteration " + iter);
             // TNTLoader loader = new TNTLoader(new FileTNTSource(Path.of("src/test/resources/bench/bench.tnt")));
             // AnvilLoader loader = new AnvilLoader(Path.of("src/test/resources/bench"));
-            PolarLoader loader = new PolarLoader(PolarReader.read(Files.readAllBytes(Path.of("src/test/resources/bench.polar"))));
+            PolarLoader loader = new PolarLoader(MinestomPolarReader.read(Files.readAllBytes(Path.of("src/test/resources/bench.polar"))));
             for (int x = 0; x < 32; x++) {
                 for (int z = 0; z < 32; z++) {
                     loader.loadChunk(instance, 0, 0).join();

common/build.gradle.kts

@@ -0,0 +1,44 @@
+plugins {
+    `java-library`
+    kotlin("jvm")
+}
+
+group = "dev.hollowcube"
+version = System.getenv("TAG_VERSION") ?: "dev"
+description = "Fast and small world format for Minestom"
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+    maven(url = "https://jitpack.io")
+}
+
+dependencies {
+    compileOnly("org.jetbrains:annotations:26.0.2")
+    api("net.kyori:adventure-api:4.21.0")
+    api("net.kyori:adventure-nbt:4.21.0")
+    api(libs.zstd)
+    // Fastutil is only included because minestom already uses it, otherwise it is a crazy dependency
+    // for how it is used in this project.
+    api(libs.fastutil)
+
+    testImplementation("ch.qos.logback:logback-core:1.4.7")
+    testImplementation("ch.qos.logback:logback-classic:1.4.7")
+
+    testImplementation(platform("org.junit:junit-bom:5.9.1"))
+    testImplementation("org.junit.jupiter:junit-jupiter")
+    implementation(kotlin("stdlib-jdk8"))
+}
+
+java {
+    withSourcesJar()
+    withJavadocJar()
+}
+
+tasks.test {
+    maxHeapSize = "2g"
+    useJUnitPlatform()
+}
+kotlin {
+    jvmToolchain(21)
+}

common/src/main/java/net/hollowcube/polar/DimensionTypeWrapper.java

@@ -0,0 +1,6 @@
+package net.hollowcube.polar;
+
+public interface DimensionTypeWrapper {
+    int minY();
+    int maxY();
+}

src/main/java/net/hollowcube/polar/PaletteUtil.java → common/src/main/java/net/hollowcube/polar/PaletteUtil.java

@@ -1,12 +1,10 @@
 package net.hollowcube.polar;
 
-import net.minestom.server.utils.validate.Check;
-
 final class PaletteUtil {
     private PaletteUtil() {}
 
     public static int bitsToRepresent(int n) {
-        Check.argCondition(n < 1, "n must be greater than 0");
+        assert n > 0: "n must be greater than 0";
         return Integer.SIZE - Integer.numberOfLeadingZeros(n);
     }
 

src/main/java/net/hollowcube/polar/PolarChunk.java → common/src/main/java/net/hollowcube/polar/PolarChunk.java

@@ -2,7 +2,6 @@
 
 
 import net.kyori.adventure.nbt.CompoundBinaryTag;
-import net.minestom.server.instance.Chunk;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.List;
@@ -35,7 +34,7 @@ public record PolarChunk(
             HEIGHTMAP_WORLD_SURFACE,
             HEIGHTMAP_WORLD_SURFACE_WG,
     };
-    static final int HEIGHTMAP_SIZE = Chunk.CHUNK_SIZE_X * Chunk.CHUNK_SIZE_Z;
+    static final int HEIGHTMAP_SIZE = 16 * 16;
     static final int MAX_HEIGHTMAPS = 32;
 
     public int @Nullable [] heightmap(int type) {

src/main/java/net/hollowcube/polar/PolarDataConverter.java → common/src/main/java/net/hollowcube/polar/PolarDataConverter.java

@@ -1,7 +1,6 @@
 package net.hollowcube.polar;
 
 import net.kyori.adventure.nbt.CompoundBinaryTag;
-import net.minestom.server.MinecraftServer;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.Map;
@@ -19,14 +18,14 @@ public interface PolarDataConverter {
      * do not store a data version. Defaults to the current Minestom data version.
      */
     default int defaultDataVersion() {
-        return MinecraftServer.DATA_VERSION;
+        return -1;
     }
 
     /**
      * Returns the current data version of the world.
      */
     default int dataVersion() {
-        return MinecraftServer.DATA_VERSION;
+        return -1;
     }
 
     /**