some more methods for entities

api/src/main/java/me/tofaa/entitylib/wrapper/WrapperEntity.java

@@ -11,6 +11,7 @@ import me.tofaa.entitylib.TrackedEntity;
 import me.tofaa.entitylib.meta.EntityMeta;
 import me.tofaa.entitylib.meta.types.ObjectData;
 import me.tofaa.entitylib.tick.Tickable;
+import net.kyori.adventure.text.Component;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -158,6 +159,14 @@ public class WrapperEntity implements Tickable, TrackedEntity {
         }
     }
 
+    public void sendMessageToViewers(Component message) {
+        sendPacketToViewers(new WrapperPlayServerSystemChatMessage(false, message));
+    }
+
+    public void sendActionbarToViewers(Component message) {
+        sendPacketToViewers(new WrapperPlayServerSystemChatMessage(true, message));
+    }
+
     protected WrapperPlayServerSpawnEntity createSpawnPacket() {
         return new WrapperPlayServerSpawnEntity(
                 entityId,

api/src/main/java/me/tofaa/entitylib/wrapper/WrapperLivingEntity.java

@@ -1,10 +1,14 @@
 package me.tofaa.entitylib.wrapper;
 
 import com.github.retrooper.packetevents.protocol.entity.type.EntityType;
+import com.github.retrooper.packetevents.protocol.nbt.NBTCompound;
 import com.github.retrooper.packetevents.protocol.player.HumanoidArm;
+import com.github.retrooper.packetevents.protocol.potion.PotionType;
 import com.github.retrooper.packetevents.wrapper.play.server.WrapperPlayServerEntityAnimation;
+import com.github.retrooper.packetevents.wrapper.play.server.WrapperPlayServerEntityEffect;
 import me.tofaa.entitylib.meta.EntityMeta;
 import me.tofaa.entitylib.meta.types.LivingEntityMeta;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.UUID;
 
@@ -23,6 +27,54 @@ public class WrapperLivingEntity extends WrapperEntity{
         equipment.refresh();
     }
 
+    /**
+     * Adds a potion effect to the entity.
+     * EntityLib will not keep track of the potions you give or what you do with them,
+     * this simply sends the packet to the viewers of the entity.
+     * @param type The type of the potion effect {@link com.github.retrooper.packetevents.protocol.potion.PotionTypes}
+     * @param amplifier The amplifier of the potion effect. The notchian client displays the number as (amplifier + 1)
+     * @param duration The duration of the potion effect in ticks, if set to -1 the client will display the effect as infinite
+     * @param flags The bit flags of the potion effect see: https://wiki.vg/Protocol#Entity_Effect
+     * @param hasFactorData Whether the potion effect has factor data
+     * @param factorData The factor data of the potion effect, if hasFactorData is false this will be ignored
+     */
+    public void addPotionEffect(
+        PotionType type,
+        int amplifier,
+        int duration,
+        byte flags,
+        boolean hasFactorData,
+        @Nullable NBTCompound factorData
+    ) {
+        sendPacketToViewers(
+                new WrapperPlayServerEntityEffect(
+                        getEntityId(),
+                        type,
+                        amplifier,
+                        duration,
+                        flags
+                )
+        );
+    }
+
+    /**
+     * Adds a potion effect to the entity.
+     * EntityLib will not keep track of the potions you give or what you do with them,
+     * this simply sends the packet to the viewers of the entity.
+     * @param type The type of the potion effect {@link com.github.retrooper.packetevents.protocol.potion.PotionTypes}
+     * @param amplifier The amplifier of the potion effect. The notchian client displays the number as (amplifier + 1)
+     * @param duration The duration of the potion effect in ticks, if set to -1 the client will display the effect as infinite
+     * @param flags The bit flags of the potion effect see: https://wiki.vg/Protocol#Entity_Effect
+     */
+    public void addPotionEffect(
+        PotionType type,
+        int amplifier,
+        int duration,
+        byte flags
+    ) {
+        addPotionEffect(type, amplifier, duration, flags, false, null);
+    }
+
     public void playCriticalHitAnimation() {
         sendAnimation(WrapperPlayServerEntityAnimation.EntityAnimationType.CRITICAL_HIT);
     }