Normalize particles for all versions and optimize radius

src/main/java/net/trueog/launchpadsog/LaunchPadsOG.java

@@ -1,6 +1,8 @@
 package net.trueog.launchpadsog;
 
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 
@@ -39,6 +41,9 @@ public final class LaunchPadsOG extends JavaPlugin {
     // lookup instead of scanning every configured pad on every step.
     private static final Map<String, Integer> padsByBlock = new HashMap<>();
 
+    // Particle reach, squared. Vanilla un-forced range on modern clients.
+    private static final double PARTICLE_RANGE_SQUARED = 32 * 32;
+
     @Override
     public void onEnable() {
 
@@ -108,7 +113,7 @@ public final class LaunchPadsOG extends JavaPlugin {
 
                 // Use PORTAL, what ViaRewind downgrades DRAGON_BREATH to, so 1.8 and modern
                 // clients match.
-                world.spawnParticle(Particle.PORTAL, padLocation, idleParticleCount, 0, 0, 0, 0.05 * idleParticlePower);
+                spawnParticleForAllClients(Particle.PORTAL, padLocation, idleParticleCount, 0.05 * idleParticlePower);
 
             }
 
@@ -116,6 +121,38 @@ public final class LaunchPadsOG extends JavaPlugin {
 
     }
 
+    // Forced particle within 32 blocks, so 1.8 and modern clients match.
+    public static void spawnParticleForAllClients(Particle particle, Location location, int count, double speed) {
+
+        final World world = location.getWorld();
+        if (world == null) {
+
+            return;
+
+        }
+
+        final List<Player> receivers = new ArrayList<>();
+        for (final Player player : world.getPlayers()) {
+
+            if (player.getLocation().distanceSquared(location) <= PARTICLE_RANGE_SQUARED) {
+
+                receivers.add(player);
+
+            }
+
+        }
+
+        if (receivers.isEmpty()) {
+
+            return;
+
+        }
+
+        world.spawnParticle(particle, receivers, null, location.getX(), location.getY(), location.getZ(), count, 0, 0,
+                0, speed, null, true);
+
+    }
+
     @Override
     public void onDisable() {
 

src/main/java/net/trueog/launchpadsog/Listeners/OnPlayerMove.java

@@ -160,7 +160,7 @@ public class OnPlayerMove implements Listener {
             final double padParticleCount = padConfig.getDouble("padLaunchParticleCount");
             final double padParticlePower = padConfig.getDouble("padLaunchParticlePower");
             // Visible to everyone nearby, matching the in-air trail below.
-            player.getWorld().spawnParticle(Particle.FIREWORKS_SPARK, padLocation, (int) padParticleCount, 0, 0, 0,
+            LaunchPadsOG.spawnParticleForAllClients(Particle.FIREWORKS_SPARK, padLocation, (int) padParticleCount,
                     0.2 * padParticlePower);
 
             final double playerParticleMult = padConfig.getDouble("playerLaunchParticleCountMultipier");
@@ -173,11 +173,10 @@ public class OnPlayerMove implements Listener {
             // \/ --------- \/
             for (int j = 0; j < Math.min(yPower * 8 - 15, 25); j++) {
 
-                // Max out the number of particles at 50
-                Bukkit.getScheduler()
-                        .runTaskLater(
-                                LaunchPadsOG.getPlugin(), () -> player.getWorld().spawnParticle(Particle.SPELL,
-                                        player.getLocation(), (int) Math.min(xPower * zPower * playerParticleMult, 50)),
+                // Max out the number of particles at 50, speed 1 as before.
+                Bukkit.getScheduler().runTaskLater(LaunchPadsOG.getPlugin(),
+                        () -> LaunchPadsOG.spawnParticleForAllClients(Particle.SPELL, player.getLocation(),
+                                (int) Math.min(xPower * zPower * playerParticleMult, 50), 1),
                         j);
 
             }