Added persistent option to categories

eco-core/core-plugin/src/main/kotlin/com/willfp/ecomobs/category/MobCategory.kt

@@ -4,10 +4,18 @@ import com.willfp.eco.core.registry.KRegistrable
 import com.willfp.ecomobs.category.spawning.SpawnMethod
 import com.willfp.ecomobs.mob.EcoMob
 import com.willfp.ecomobs.mob.EcoMobs
+import com.willfp.ecomobs.mob.LivingMob
 
 interface MobCategory : KRegistrable {
     val mobs: List<EcoMob>
         get() = EcoMobs.values().filter { it.category == this }
 
     val spawnMethod: SpawnMethod
+
+    val isPersistent: Boolean
+
+    /**
+     * Apply category attributes to [mob].
+     */
+    fun applyToMob(mob: LivingMob)
 }

eco-core/core-plugin/src/main/kotlin/com/willfp/ecomobs/category/impl/ConfigDrivenMobCategory.kt

@@ -5,6 +5,7 @@ import com.willfp.ecomobs.EcoMobsPlugin
 import com.willfp.ecomobs.category.MobCategory
 import com.willfp.ecomobs.category.spawning.SpawnMethodFactories
 import com.willfp.ecomobs.config.ConfigViolationException
+import com.willfp.ecomobs.mob.LivingMob
 import com.willfp.libreforge.ConfigViolation
 import com.willfp.libreforge.ViolationContext
 
@@ -30,6 +31,15 @@ class ConfigDrivenMobCategory(
             it.with("spawning")
         }
 
+    override val isPersistent = config.getBool("persistent")
+
+    override fun applyToMob(mob: LivingMob) {
+        if (isPersistent) {
+            mob.entity.isPersistent = true
+            mob.entity.removeWhenFarAway = false
+        }
+    }
+
     override fun onRegister() {
         spawnMethod.start()
     }

eco-core/core-plugin/src/main/kotlin/com/willfp/ecomobs/mob/impl/ConfigDrivenEcoMob.kt

@@ -394,6 +394,9 @@ internal class ConfigDrivenEcoMob(
             action(livingMob)
         }
 
+        // Apply category
+        category.applyToMob(livingMob)
+
         // Add base tickets
         livingMob.addTickHandler(TickHandlerDisplayName())
         livingMob.addTickHandler(TickHandlerLifespan())

eco-core/core-plugin/src/main/resources/categories/_example.yml

@@ -38,4 +38,8 @@ spawning:
     conditions: [ ]
 
     # The chance for the mob to spawn if a valid spawn point is found (as a percentage)
-    chance: 100
+    chance: 100
+
+
+# If the mob is persistent, then it will not despawn naturally.
+persistent: false