Implement tickrates

src/main/java/com/artillexstudios/axminions/api/events/EffectDispatchEvent.java

@@ -5,7 +5,7 @@ import com.artillexstudios.axminions.minions.actions.effects.Effect;
 import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
-public class EffectDispatchEvent extends MinionEvent {
+public final class EffectDispatchEvent extends MinionEvent {
     private static final HandlerList HANDLER_LIST = new HandlerList();
     private final Effect<?, ?> effect;
     private final Object argument;

src/main/java/com/artillexstudios/axminions/api/events/MinionPlaceEvent.java

@@ -0,0 +1,4 @@
+package com.artillexstudios.axminions.api.events;
+
+public class MinionPlaceEvent {
+}

src/main/java/com/artillexstudios/axminions/api/events/PreMinionPlaceEvent.java

@@ -0,0 +1,49 @@
+package com.artillexstudios.axminions.api.events;
+
+import org.bukkit.Location;
+import org.bukkit.entity.Player;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+import org.jetbrains.annotations.NotNull;
+
+public final class PreMinionPlaceEvent extends Event implements Cancellable {
+    private static final HandlerList HANDLER_LIST = new HandlerList();
+    private final Player player;
+    private final Location location;
+    private boolean cancelled = false;
+
+    public PreMinionPlaceEvent(Player player, Location location) {
+        this.player = player;
+        this.location = location;
+    }
+
+    public Location location() {
+        return location;
+    }
+
+    public Player player() {
+        return player;
+    }
+
+    @NotNull
+    public static HandlerList getHandlerList() {
+        return HANDLER_LIST;
+    }
+
+    @NotNull
+    @Override
+    public HandlerList getHandlers() {
+        return HANDLER_LIST;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    @Override
+    public void setCancelled(boolean cancelled) {
+        this.cancelled = cancelled;
+    }
+}

src/main/java/com/artillexstudios/axminions/config/Config.java

@@ -27,6 +27,7 @@ public final class Config {
     public static int DATABASE_KEEPALIVE_TIME = 0;
     public static int DATABASE_CONNECTION_TIMEOUT = 5000;
     public static DatabaseType DATABASE_TYPE = DatabaseType.H2;
+    public static int TICK_FREQUENCY = 1;
     public static boolean SHOW_HAND_ANIMATION = true;
     public static boolean ASYNC_HAND_ANIMATION = false;
     public static int ASYNC_PROCESSOR_POOL_SIZE = 3;
@@ -76,6 +77,7 @@ public final class Config {
         DATABASE_MAXIMUM_LIFETIME = config.getInt("database.pool.maximum-lifetime", DATABASE_MAXIMUM_LIFETIME);
         DATABASE_KEEPALIVE_TIME = config.getInt("database.pool.keepalive-time", DATABASE_KEEPALIVE_TIME);
         DATABASE_CONNECTION_TIMEOUT = config.getInt("database.pool.connection-timeout", DATABASE_CONNECTION_TIMEOUT);
+        TICK_FREQUENCY = config.getInt("tick-frequency", TICK_FREQUENCY);
         SHOW_HAND_ANIMATION = config.getBoolean("show-hand-animation", SHOW_HAND_ANIMATION);
         ASYNC_HAND_ANIMATION = config.getBoolean("async-hand-animation", ASYNC_HAND_ANIMATION);
         ASYNC_PROCESSOR_POOL_SIZE = config.getInt("async-processor-pool-size", ASYNC_PROCESSOR_POOL_SIZE);

src/main/java/com/artillexstudios/axminions/listeners/MinionPlaceListener.java

@@ -3,9 +3,7 @@ package com.artillexstudios.axminions.listeners;
 import com.artillexstudios.axapi.items.WrappedItemStack;
 import com.artillexstudios.axapi.items.component.DataComponents;
 import com.artillexstudios.axapi.items.nbt.CompoundTag;
-import com.artillexstudios.axminions.config.Minions;
 import com.artillexstudios.axminions.database.DataHandler;
-import com.artillexstudios.axminions.minions.Level;
 import com.artillexstudios.axminions.minions.Minion;
 import com.artillexstudios.axminions.minions.MinionArea;
 import com.artillexstudios.axminions.minions.MinionData;
@@ -16,7 +14,6 @@ import com.artillexstudios.axminions.utils.Direction;
 import com.artillexstudios.axminions.utils.LocationUtils;
 import com.artillexstudios.axminions.utils.LogUtils;
 import org.bukkit.Location;
-import org.bukkit.World;
 import org.bukkit.block.Block;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
@@ -62,6 +59,7 @@ public final class MinionPlaceListener implements Listener {
             return;
         }
 
+        event.setCancelled(true);
         String typeName = compoundTag.getString("axminions_minion_type");
         if (typeName == null || typeName.isBlank()) {
             LogUtils.warn("ItemStack in {}'s hand is an invalid minion; the miniontype is empty!", event.getPlayer().getName());
@@ -77,11 +75,23 @@ public final class MinionPlaceListener implements Listener {
         // TODO: level
         itemStack.setAmount(itemStack.getAmount() - 1);
         Location location = LocationUtils.toBlockCenter(clickedBlock.getRelative(event.getBlockFace()).getLocation());
+
+        MinionArea area = MinionWorldCache.getArea(location.getWorld());
+        if (area == null) {
+            LogUtils.warn("{} attempted to place minion, but area is null!", event.getPlayer().getName());
+            return;
+        }
+
+        Minion atLocation = area.getMinionAt(location);
+        if (atLocation != null) {
+            // TODO: Send message
+            return;
+        }
+
         // TODO: Database queries, etc..
         // TODO: ownerId
         MinionData data = new MinionData(0, minionType, Direction.NORTH, null, minionType.level(1), 0, null, null, new HashMap<>());
         Minion minion = new Minion(location, data);
-        MinionArea area = MinionWorldCache.getArea(location.getWorld());
         MinionWorldCache.add(minion);
         DataHandler.insertMinion(minion).thenRun(() -> {
             LogUtils.debug("Inserted minion!");

src/main/java/com/artillexstudios/axminions/minions/Minion.java

@@ -42,14 +42,14 @@ public final class Minion {
     }
 
     public void tick() {
-        this.tick++;
+        this.tick += Config.TICK_FREQUENCY;
         if (this.tick < this.minionData.level().actionTicks()) {
             if (Config.SHOW_HAND_ANIMATION) {
                 AsyncUtils.run(() -> {
                     if (this.armTick >= 20) return;
                     ArmorStandMeta meta = (ArmorStandMeta) this.entity.meta();
                     meta.metadata().set(Accessors.RIGHT_ARM_ROTATION, new EulerAngle((-2 + ((double) this.armTick / 10)), 0, 0));
-                    this.armTick += 2;
+                    this.armTick += (2 * Config.TICK_FREQUENCY);
                 }, Config.ASYNC_HAND_ANIMATION);
             }
             return;

src/main/resources/config.yml

@@ -12,6 +12,11 @@ database:
     keepalive-time: 0
     connection-timeout: 5000
 
+# How often should we tick minions?
+# Increasing this might improve performance a bit.
+# If this is increased, minion animations might look a bit choppy.
+tick-frequency: 1
+
 # If the minions should show a hand animation
 # This has a minimal impact on performance
 show-hand-animation: true