Remove plugins.gradle and factor into common extension

game/plugin/entity/spawn/src/spawn.kt

@@ -0,0 +1,13 @@
+import org.apollo.game.model.*
+
+data class Spawn(val id: Int?, val name: String, val position: Position, val facing: Direction,
+                 val spawnAnimation: Animation? = null,
+                 val spawnGraphic: Graphic? = null)
+
+object Spawns {
+    val list = mutableListOf<Spawn>()
+}
+
+fun npc_spawn(name: String, x: Int, y: Int, z: Int = 0, id: Int? = null, facing: Direction = Direction.NORTH) {
+    Spawns.list.add(Spawn(id, name, Position(x, y, z), facing))
+}

game/plugin/entity/spawn/src/spawn.plugin.kts

@@ -0,0 +1,24 @@
+import org.apollo.cache.def.NpcDefinition
+import org.apollo.game.model.entity.Npc
+
+start { world ->
+    Spawns.list.forEach {
+        val definition = if (it.id != null) NpcDefinition.lookup(it.id!!) else lookup_npc(it.name)
+        if (definition == null) {
+            throw IllegalArgumentException("Invalid NPC name or ID ${it.name}, ${it.id}")
+        }
+
+        val npc = Npc(world, definition.id, it.position)
+        npc.turnTo(it.position.step(1, it.facing))
+
+        if (it.spawnAnimation != null) {
+            npc.playAnimation(it.spawnAnimation)
+        }
+
+        if (it.spawnGraphic != null) {
+            npc.playGraphic(it.spawnGraphic)
+        }
+
+        world.register(npc)
+    }
+}