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GH-188 Add support for folia-based servers. #275

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952551b
Release v2.3.0-SNAPSHOT
vLuckyyy Aug 30, 2025
6a07b94
Merge remote-tracking branch 'origin/master' into folia-cooking
vLuckyyy Sep 15, 2025
ec8208a
Update eternalcombat-plugin/src/main/java/com/eternalcode/combat/Comb…
vLuckyyy Sep 15, 2025
e252c7f
Make `CombatSchedulerAdapter` uninstantiable.
vLuckyyy Sep 15, 2025
d349352
Merge branch 'master' into folia-cooking
vLuckyyy Sep 15, 2025
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5 changes: 3 additions & 2 deletions buildSrc/src/main/kotlin/eternalcombat-repositories.gradle.kts
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Expand Up @@ -3,11 +3,12 @@ plugins {
}

repositories {
maven("https://repo.eternalcode.pl/releases")
maven("https://repo.eternalcode.pl/snapshots")

mavenCentral()
maven("https://hub.spigotmc.org/nexus/content/repositories/snapshots/")
maven("https://repo.papermc.io/repository/maven-public/")
maven("https://repo.eternalcode.pl/releases")
maven("https://repo.eternalcode.pl/snapshots")
maven("https://storehouse.okaeri.eu/repository/maven-public/")
maven("https://repo.panda-lang.org/releases")
maven("https://maven.enginehub.org/repo/")
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9 changes: 7 additions & 2 deletions eternalcombat-plugin/build.gradle.kts
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Expand Up @@ -23,6 +23,7 @@ dependencies {

// litecommands
implementation("dev.rollczi:litecommands-bukkit:${Versions.LITE_COMMANDS}")
implementation("dev.rollczi:litecommands-folia:${Versions.LITE_COMMANDS}")

// Okaeri configs
implementation("eu.okaeri:okaeri-configs-serdes-commons:${Versions.OKAERI_CONFIGS_SERDES_COMMONS}")
Expand All @@ -37,8 +38,10 @@ dependencies {
// caffeine
implementation("com.github.ben-manes.caffeine:caffeine:${Versions.CAFFEINE}")

implementation("com.eternalcode:eternalcode-commons-bukkit:${Versions.ETERNALCODE_COMMONS}")
implementation("com.eternalcode:eternalcode-commons-adventure:${Versions.ETERNALCODE_COMMONS}")
implementation("com.eternalcode:eternalcode-commons-bukkit:${Versions.ETERNALCODE_COMMONS}")
implementation("com.eternalcode:eternalcode-commons-shared:${Versions.ETERNALCODE_COMMONS}")
implementation("com.eternalcode:eternalcode-commons-folia:${Versions.ETERNALCODE_COMMONS}")

// worldguard
compileOnly("com.sk89q.worldguard:worldguard-bukkit:${Versions.WORLD_GUARD_BUKKIT}")
Expand Down Expand Up @@ -70,6 +73,8 @@ bukkit {
"packetevents",
)
version = "${project.version}"

foliaSupported = true
}

tasks {
Expand Down Expand Up @@ -104,7 +109,7 @@ tasks.shadowJar {
"com.github.benmanes.caffeine",
"com.eternalcode.commons",
"com.eternalcode.multification",
"io.papermc"
"io.papermc.lib"
).forEach { pack ->
relocate(pack, "$prefix.$pack")
}
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12 changes: 8 additions & 4 deletions eternalcombat-plugin/src/main/java/com/eternalcode/combat/CombatPlugin.java
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Expand Up @@ -49,13 +49,15 @@
import com.eternalcode.combat.updater.UpdaterService;
import com.eternalcode.commons.adventure.AdventureLegacyColorPostProcessor;
import com.eternalcode.commons.adventure.AdventureLegacyColorPreProcessor;
import com.eternalcode.commons.bukkit.scheduler.BukkitSchedulerImpl;
import com.eternalcode.commons.bukkit.scheduler.MinecraftScheduler;
import com.eternalcode.commons.scheduler.Scheduler;
import com.eternalcode.multification.notice.Notice;
import com.google.common.base.Stopwatch;
import dev.rollczi.litecommands.LiteCommands;
import dev.rollczi.litecommands.bukkit.LiteBukkitFactory;
import dev.rollczi.litecommands.bukkit.LiteBukkitMessages;
import dev.rollczi.litecommands.folia.FoliaExtension;
import java.time.Duration;
import net.kyori.adventure.platform.AudienceProvider;
import net.kyori.adventure.platform.bukkit.BukkitAudiences;
import net.kyori.adventure.text.minimessage.MiniMessage;
Expand Down Expand Up @@ -99,10 +101,10 @@ public void onEnable() {
ConfigService configService = new ConfigService();

EventManager eventManager = new EventManager(this);
Scheduler scheduler = new BukkitSchedulerImpl(this);

PluginConfig pluginConfig = configService.create(PluginConfig.class, new File(dataFolder, "config.yml"));

MinecraftScheduler scheduler = CombatSchedulerAdapter.getAdaptiveScheduler(this);

this.fightManager = new FightManagerImpl(eventManager);
this.fightPearlService = new FightPearlServiceImpl(pluginConfig.pearl);
this.fightTagOutService = new FightTagOutServiceImpl();
Expand Down Expand Up @@ -149,6 +151,8 @@ public void onEnable() {
new EternalCombatReloadCommand(configService, noticeService)
)

.extension(new FoliaExtension(this))

.result(Notice.class, (invocation, result, chain) -> noticeService.create()
.viewer(invocation.sender())
.notice(result)
Expand All @@ -157,7 +161,7 @@ public void onEnable() {
.build();

FightTask fightTask = new FightTask(server, pluginConfig, this.fightManager, noticeService);
this.getServer().getScheduler().runTaskTimer(this, fightTask, 20L, 20L);
scheduler.timer(fightTask, Duration.ofSeconds(1), Duration.ofSeconds(1));

new Metrics(this, BSTATS_METRICS_ID);

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30 changes: 30 additions & 0 deletions eternalcombat-plugin/src/main/java/com/eternalcode/combat/CombatSchedulerAdapter.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,30 @@
package com.eternalcode.combat;

import com.eternalcode.commons.bukkit.scheduler.BukkitSchedulerImpl;
import com.eternalcode.commons.bukkit.scheduler.MinecraftScheduler;
import com.eternalcode.commons.folia.scheduler.FoliaSchedulerImpl;
import java.util.logging.Logger;
import org.bukkit.plugin.Plugin;

public final class CombatSchedulerAdapter {

private static final String FOLIA_CLASS = "io.papermc.paper.threadedregions.RegionizedServer";

private CombatSchedulerAdapter() {
throw new IllegalStateException("You can't instantiate this class");
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Suggested change
throw new IllegalStateException("You can't instantiate this class");
throw new UnsupportedOperationException("This is an utility class and cannot be instantiated");

nitpick, but it's a standard in our utility classes

}

public static MinecraftScheduler getAdaptiveScheduler(Plugin plugin) {
Logger logger = plugin.getLogger();

try {
Class.forName(FOLIA_CLASS);
logger.info("» Detected Folia environment. Using FoliaScheduler.");
return new FoliaSchedulerImpl(plugin);
}
catch (ClassNotFoundException exception) {
logger.info("» Detected Bukkit/Paper environment. Using BukkitScheduler.");
return new BukkitSchedulerImpl(plugin);
}
}
}
5 changes: 3 additions & 2 deletions eternalcombat-plugin/src/main/java/com/eternalcode/combat/border/BorderServiceImpl.java
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Expand Up @@ -4,6 +4,7 @@
import com.eternalcode.combat.border.event.BorderShowAsyncEvent;
import com.eternalcode.combat.event.EventManager;
import com.eternalcode.combat.region.RegionProvider;
import com.eternalcode.commons.bukkit.scheduler.MinecraftScheduler;
import com.eternalcode.commons.scheduler.Scheduler;
import dev.rollczi.litecommands.shared.Lazy;
import java.util.ArrayList;
Expand All @@ -19,15 +20,15 @@

public class BorderServiceImpl implements BorderService {

private final Scheduler scheduler;
private final MinecraftScheduler scheduler;
private final EventManager eventManager;

private final Supplier<BorderSettings> settings;

private final BorderTriggerIndex borderIndexes;
private final BorderActivePointsIndex activeBorderIndex = new BorderActivePointsIndex();

public BorderServiceImpl(Scheduler scheduler, Server server, RegionProvider provider, EventManager eventManager, Supplier<BorderSettings> settings) {
public BorderServiceImpl(MinecraftScheduler scheduler, Server server, RegionProvider provider, EventManager eventManager, Supplier<BorderSettings> settings) {
this.scheduler = scheduler;
this.eventManager = eventManager;
this.settings = settings;
Expand Down
7 changes: 4 additions & 3 deletions eternalcombat-plugin/src/main/java/com/eternalcode/combat/border/BorderTriggerIndex.java
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Expand Up @@ -2,6 +2,7 @@

import com.eternalcode.combat.region.Region;
import com.eternalcode.combat.region.RegionProvider;
import com.eternalcode.commons.bukkit.scheduler.MinecraftScheduler;
import com.eternalcode.commons.scheduler.Scheduler;
import java.time.Duration;
import java.util.ArrayList;
Expand All @@ -17,13 +18,13 @@
class BorderTriggerIndex {

private final Server server;
private final Scheduler scheduler;
private final MinecraftScheduler scheduler;
private final RegionProvider provider;
private final Supplier<BorderSettings> settings;

private final Map<String, BorderTriggerIndexBucket> borderIndexes = new HashMap<>();

private BorderTriggerIndex(Server server, Scheduler scheduler, RegionProvider provider, Supplier<BorderSettings> settings) {
private BorderTriggerIndex(Server server, MinecraftScheduler scheduler, RegionProvider provider, Supplier<BorderSettings> settings) {
this.server = server;
this.scheduler = scheduler;
this.provider = provider;
Expand Down Expand Up @@ -56,7 +57,7 @@ private void updateWorld(String world, Collection<Region> regions) {
});
}

static BorderTriggerIndex started(Server server, Scheduler scheduler, RegionProvider provider, Supplier<BorderSettings> settings) {
static BorderTriggerIndex started(Server server, MinecraftScheduler scheduler, RegionProvider provider, Supplier<BorderSettings> settings) {
BorderTriggerIndex index = new BorderTriggerIndex(server, scheduler, provider, settings);
scheduler.timerAsync(() -> index.updateWorlds(), Duration.ZERO, settings.get().indexRefreshDelay());
return index;
Expand Down
8 changes: 5 additions & 3 deletions ...lcombat-plugin/src/main/java/com/eternalcode/combat/fight/knockback/KnockbackService.java
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Expand Up @@ -4,6 +4,7 @@
import com.eternalcode.combat.region.Point;
import com.eternalcode.combat.region.Region;
import com.eternalcode.combat.region.RegionProvider;
import com.eternalcode.commons.bukkit.scheduler.MinecraftScheduler;
import com.eternalcode.commons.scheduler.Scheduler;
import java.time.Duration;
import java.util.HashMap;
Expand All @@ -18,12 +19,12 @@
public final class KnockbackService {

private final PluginConfig config;
private final Scheduler scheduler;
private final MinecraftScheduler scheduler;
private final RegionProvider regionProvider;

private final Map<UUID, Region> insideRegion = new HashMap<>();

public KnockbackService(PluginConfig config, Scheduler scheduler, RegionProvider regionProvider) {
public KnockbackService(PluginConfig config, MinecraftScheduler scheduler, RegionProvider regionProvider) {
this.config = config;
this.scheduler = scheduler;
this.regionProvider = regionProvider;
Expand All @@ -39,7 +40,8 @@ public void forceKnockbackLater(Player player, Region region) {
}

insideRegion.put(player.getUniqueId(), region);
scheduler.runLater(() -> {

scheduler.runLater(player.getLocation(), () -> {
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if this player.getLocation() is here, can it be removed in the next line?

insideRegion.remove(player.getUniqueId());
Location playerLocation = player.getLocation();
if (!region.contains(playerLocation) && !regionProvider.isInRegion(playerLocation)) {
Expand Down
2 changes: 1 addition & 1 deletion eternalcombat-plugin/src/main/java/com/eternalcode/combat/fight/knockback/Point2D.java
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Expand Up @@ -7,7 +7,7 @@ record Point2D(int x, int z) {

Location toLocation(Location location) {
World world = location.getWorld();
int y = world.getHighestBlockYAt(x, z) + 1;
double y = location.getY();
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high

By preserving the player's Y-coordinate, you risk teleporting them inside blocks or terrain if the new X/Z coordinates are inside a wall or mountain. The previous implementation using world.getHighestBlockYAt(x, z) was safer in the vertical axis. While getHighestBlockYAt is a synchronous call and problematic on Folia, simply using the existing Y-coordinate is dangerous and can lead to players getting stuck or taking suffocation damage. Consider finding a safe location to teleport the player to, which might involve checking for solid blocks at the target location or using an async-safe method to find the highest block.

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will do research on this


return new Location(world, x, y, z, location.getYaw(), location.getPitch());
}
Expand Down
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