update

scripts/portal/portal.gd

@@ -0,0 +1,4 @@
+extends StaticBody3D
+
+func _ready() -> void:
+  add_to_group("targetable")

scripts/portal/portal.gd.uid

@@ -0,0 +1 @@
+uid://byjxj4mq84gki

scripts/portal/portal_spawner.gd

@@ -0,0 +1,30 @@
+extends Node
+
+const SPAWN_COUNT := 3
+var thresholds := [0.85, 0.70, 0.55, 0.40, 0.25, 0.10]
+var triggered: Array[bool] = [false, false, false, false, false, false]
+var enemy_scene: PackedScene = preload("res://scenes/enemy/enemy.tscn")
+
+@onready var portal: StaticBody3D = get_parent()
+@onready var health: Node = get_parent().get_node("Health")
+
+func _process(_delta: float) -> void:
+  if health.current_health <= 0:
+    return
+  var ratio: float = health.current_health / health.max_health
+  for i in range(thresholds.size()):
+    if not triggered[i] and ratio <= thresholds[i]:
+      triggered[i] = true
+      _spawn_enemies()
+
+func _spawn_enemies() -> void:
+  var spawned: Array = []
+  for j in range(SPAWN_COUNT):
+    var enemy: CharacterBody3D = enemy_scene.instantiate()
+    var offset := Vector3(randf_range(-2, 2), 0, randf_range(-2, 2))
+    portal.get_parent().add_child(enemy)
+    enemy.global_position = portal.global_position + offset
+    enemy.spawn_position = portal.global_position
+    enemy.portal = portal
+    spawned.append(enemy)
+  EventBus.portal_spawn.emit(portal, spawned)

scripts/portal/portal_spawner.gd.uid

@@ -0,0 +1 @@
+uid://begrg74oh76pu