fix: replace (removed) constants with backwards compatible alternatives

Bukkit/src/main/java/com/plotsquared/bukkit/listener/EntityEventListener.java

@@ -42,9 +42,11 @@ import com.plotsquared.core.plot.world.PlotAreaManager;
 import com.plotsquared.core.util.EventDispatcher;
 import com.plotsquared.core.util.PlotFlagUtil;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
+import com.sk89q.worldedit.util.Enums;
 import com.sk89q.worldedit.world.block.BlockType;
 import io.papermc.lib.PaperLib;
 import org.bukkit.Material;
+import org.bukkit.NamespacedKey;
 import org.bukkit.Particle;
 import org.bukkit.World;
 import org.bukkit.block.Block;
@@ -78,10 +80,14 @@ import org.checkerframework.checker.nullness.qual.NonNull;
 
 import java.util.Iterator;
 import java.util.List;
+import java.util.Objects;
 
 @SuppressWarnings("unused")
 public class EntityEventListener implements Listener {
 
+    private static final NamespacedKey TNT_MINECART = NamespacedKey.minecraft("tnt_minecart");
+    private static final Particle EXPLOSION_HUGE = Objects.requireNonNull(Enums.findByValue(Particle.class, "EXPLOSION_EMITTER", "EXPLOSION_HUGE"));
+
     private final BukkitPlatform platform;
     private final PlotAreaManager plotAreaManager;
     private final EventDispatcher eventDispatcher;
@@ -152,8 +158,8 @@ public class EntityEventListener implements Listener {
                 }
             }
             case "REINFORCEMENTS", "NATURAL", "MOUNT", "PATROL", "RAID", "SHEARED", "SILVERFISH_BLOCK", "ENDER_PEARL",
-                    "TRAP", "VILLAGE_DEFENSE", "VILLAGE_INVASION", "BEEHIVE", "CHUNK_GEN", "NETHER_PORTAL",
+                 "TRAP", "VILLAGE_DEFENSE", "VILLAGE_INVASION", "BEEHIVE", "CHUNK_GEN", "NETHER_PORTAL",
-                    "FROZEN", "SPELL", "DEFAULT" -> {
+                 "FROZEN", "SPELL", "DEFAULT" -> {
                 if (!area.isMobSpawning()) {
                     event.setCancelled(true);
                     return;
@@ -314,7 +320,7 @@ public class EntityEventListener implements Listener {
                 if (this.lastRadius != 0) {
                     List<Entity> nearby = event.getEntity().getNearbyEntities(this.lastRadius, this.lastRadius, this.lastRadius);
                     for (Entity near : nearby) {
-                        if (near instanceof TNTPrimed || near.getType().equals(EntityType.MINECART_TNT)) {
+                        if (near instanceof TNTPrimed || near.getType().getKey().equals(TNT_MINECART)) {
                             if (!near.hasMetadata("plot")) {
                                 near.setMetadata("plot", new FixedMetadataValue((Plugin) PlotSquared.platform(), plot));
                             }
@@ -338,7 +344,7 @@ public class EntityEventListener implements Listener {
         event.setCancelled(true);
         //Spawn Explosion Particles when enabled in settings
         if (Settings.General.ALWAYS_SHOW_EXPLOSIONS) {
-            event.getLocation().getWorld().spawnParticle(Particle.EXPLOSION_HUGE, event.getLocation(), 0);
+            event.getLocation().getWorld().spawnParticle(EXPLOSION_HUGE, event.getLocation(), 0);
         }
     }
 
@@ -365,7 +371,8 @@ public class EntityEventListener implements Listener {
                 // Burning player evaporating powder snow. Use same checks as
                 // trampling farmland
                 BlockType blockType = BukkitAdapter.asBlockType(type);
-                if (!this.eventDispatcher.checkPlayerBlockEvent(pp,
+                if (!this.eventDispatcher.checkPlayerBlockEvent(
+                        pp,
                         PlayerBlockEventType.TRIGGER_PHYSICAL, location, blockType, true
                 )) {
                     event.setCancelled(true);

Bukkit/src/main/java/com/plotsquared/bukkit/listener/EntitySpawnListener.java

@@ -28,6 +28,7 @@ import com.plotsquared.core.plot.PlotArea;
 import com.plotsquared.core.plot.flag.implementations.DoneFlag;
 import io.papermc.lib.PaperLib;
 import org.bukkit.Chunk;
+import org.bukkit.NamespacedKey;
 import org.bukkit.World;
 import org.bukkit.block.Block;
 import org.bukkit.entity.ArmorStand;
@@ -54,6 +55,9 @@ import java.util.List;
 
 public class EntitySpawnListener implements Listener {
 
+    private static final NamespacedKey ITEM = NamespacedKey.minecraft("item");
+    private static final NamespacedKey END_CRYSTAL = NamespacedKey.minecraft("end_crystal");
+
     private static final String KEY = "P2";
     private static boolean ignoreTP = false;
     private static boolean hasPlotArea = false;
@@ -132,7 +136,7 @@ public class EntitySpawnListener implements Listener {
         Plot plot = location.getOwnedPlotAbs();
         EntityType type = entity.getType();
         if (plot == null) {
-            if (type == EntityType.DROPPED_ITEM) {
+            if (type.getKey().equals(ITEM)) {
                 if (Settings.Enabled_Components.KILL_ROAD_ITEMS) {
                     event.setCancelled(true);
                 }
@@ -154,7 +158,7 @@ public class EntitySpawnListener implements Listener {
         if (Settings.Done.RESTRICT_BUILDING && DoneFlag.isDone(plot)) {
             event.setCancelled(true);
         }
-        if (type == EntityType.ENDER_CRYSTAL || type == EntityType.ARMOR_STAND) {
+        if (type.getKey().equals(END_CRYSTAL) || type == EntityType.ARMOR_STAND) {
             if (BukkitEntityUtil.checkEntity(entity, plot)) {
                 event.setCancelled(true);
             }

Bukkit/src/main/java/com/plotsquared/bukkit/listener/PaperListener.java

@@ -52,6 +52,7 @@ import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.minimessage.tag.Tag;
 import net.kyori.adventure.text.minimessage.tag.resolver.TagResolver;
 import org.bukkit.Chunk;
+import org.bukkit.NamespacedKey;
 import org.bukkit.block.Block;
 import org.bukkit.block.TileState;
 import org.bukkit.entity.Entity;
@@ -80,6 +81,9 @@ import java.util.regex.Pattern;
 @SuppressWarnings("unused")
 public class PaperListener implements Listener {
 
+    private static final NamespacedKey ITEM = NamespacedKey.minecraft("item");
+    private static final NamespacedKey FISHING_BOBBER = NamespacedKey.minecraft("fishing_bobber");
+
     private final PlotAreaManager plotAreaManager;
     private Chunk lastChunk;
 
@@ -228,7 +232,7 @@ public class PaperListener implements Listener {
         if (plot == null) {
             EntityType type = event.getType();
             // PreCreatureSpawnEvent **should** not be called for DROPPED_ITEM, just for the sake of consistency
-            if (type == EntityType.DROPPED_ITEM) {
+            if (type.getKey().equals(ITEM)) {
                 if (Settings.Enabled_Components.KILL_ROAD_ITEMS) {
                     event.setCancelled(true);
                 }
@@ -354,7 +358,7 @@ public class PaperListener implements Listener {
                 event.setCancelled(true);
             }
         } else if (!plot.isAdded(pp.getUUID())) {
-            if (entity.getType().equals(EntityType.FISHING_HOOK)) {
+            if (entity.getType().getKey().equals(FISHING_BOBBER)) {
                 if (plot.getFlag(FishingFlag.class)) {
                     return;
                 }

Bukkit/src/main/java/com/plotsquared/bukkit/listener/PlayerEventListener.java

@@ -95,6 +95,7 @@ import org.bukkit.block.data.Waterlogged;
 import org.bukkit.command.PluginCommand;
 import org.bukkit.entity.ArmorStand;
 import org.bukkit.entity.Boat;
+import org.bukkit.entity.ChestBoat;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.EntityType;
 import org.bukkit.entity.HumanEntity;
@@ -376,7 +377,8 @@ public class PlayerEventListener implements Listener {
 
     @EventHandler
     public void onVehicleEntityCollision(VehicleEntityCollisionEvent e) {
-        if (e.getVehicle().getType() == EntityType.BOAT) {
+        final Class<? extends Entity> clazz = e.getVehicle().getType().getEntityClass();
+        if (clazz != null && (Boat.class.isAssignableFrom(clazz) || ChestBoat.class.isAssignableFrom(clazz))) {
             Location location = BukkitUtil.adapt(e.getEntity().getLocation());
             if (location.isPlotArea()) {
                 if (e.getEntity() instanceof Player) {

Bukkit/src/main/java/com/plotsquared/bukkit/listener/ProjectileEventListener.java

@@ -34,6 +34,7 @@ import com.plotsquared.core.plot.world.PlotAreaManager;
 import com.plotsquared.core.util.PlotFlagUtil;
 import net.kyori.adventure.text.minimessage.tag.Tag;
 import net.kyori.adventure.text.minimessage.tag.resolver.TagResolver;
+import org.bukkit.NamespacedKey;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.EntityType;
 import org.bukkit.entity.LivingEntity;
@@ -54,6 +55,8 @@ import org.checkerframework.checker.nullness.qual.NonNull;
 @SuppressWarnings("unused")
 public class ProjectileEventListener implements Listener {
 
+    private static final NamespacedKey FISHING_BOBBER = NamespacedKey.minecraft("fishing_bobber");
+
     private final PlotAreaManager plotAreaManager;
 
     @Inject
@@ -134,7 +137,7 @@ public class ProjectileEventListener implements Listener {
                 event.setCancelled(true);
             }
         } else if (!plot.isAdded(pp.getUUID())) {
-            if (entity.getType().equals(EntityType.FISHING_HOOK)) {
+            if (entity.getType().getKey().equals(FISHING_BOBBER)) {
                 if (plot.getFlag(FishingFlag.class)) {
                     return;
                 }
@@ -194,7 +197,7 @@ public class ProjectileEventListener implements Listener {
                 return;
             }
             if (plot.isAdded(pp.getUUID()) || pp.hasPermission(Permission.PERMISSION_ADMIN_PROJECTILE_OTHER) || plot.getFlag(
-                    ProjectilesFlag.class) || (entity.getType().equals(EntityType.FISHING_HOOK) && plot.getFlag(
+                    ProjectilesFlag.class) || (entity.getType().getKey().equals(FISHING_BOBBER) && plot.getFlag(
                     FishingFlag.class))) {
                 return;
             }

Bukkit/src/main/java/com/plotsquared/bukkit/util/BukkitEntityUtil.java

@@ -45,6 +45,7 @@ import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.minimessage.tag.Tag;
 import net.kyori.adventure.text.minimessage.tag.resolver.TagResolver;
+import org.bukkit.NamespacedKey;
 import org.bukkit.entity.Arrow;
 import org.bukkit.entity.Creature;
 import org.bukkit.entity.Entity;
@@ -59,6 +60,8 @@ import java.util.Objects;
 
 public class BukkitEntityUtil {
 
+    private static final NamespacedKey FIREWORK_ROCKET = NamespacedKey.minecraft("firework_rocket");
+
     public static final com.sk89q.worldedit.world.entity.EntityType FAKE_ENTITY_TYPE =
             new com.sk89q.worldedit.world.entity.EntityType("plotsquared:fake");
 
@@ -342,7 +345,7 @@ public class BukkitEntityUtil {
         //disable the firework damage. too much of a headache to support at the moment.
         if (vplot != null) {
             if (EntityDamageEvent.DamageCause.ENTITY_EXPLOSION == cause
-                    && damager.getType() == EntityType.FIREWORK) {
+                    && damager.getType().getKey().equals(FIREWORK_ROCKET)) {
                 return false;
             }
         }