update

2026-03-29 22:58:23 +02:00
parent b9ed399d34
commit 80a65fa555
19 changed files with 217 additions and 58 deletions
--- a/plan.md
+++ b/plan.md
@@ -2,7 +2,8 @@
 ## Szenenbaum
 - Welt
  - Player
-  - Gegner
+  - Portal
+    - Gegner
  - HUD

 ## Architektur
@@ -16,6 +17,7 @@
  - Kollision (StaticBody3D, WorldBoundaryShape3D)
  - Licht (DirectionalLight3D, 45°, Schatten)
  - Spieler (Instanz von player.tscn)
+  - Portal (Instanz von portal.tscn)
  - HUD (Instanz von hud.tscn)

 - player.tscn — Spieler
@@ -41,6 +43,19 @@
      - ClassIcon (Label, Klassen-Symbol: T=Tank, D=Schaden, H=Heiler)
      - Ability 1-5

+- portal.tscn — Portal (Gegner-Spawner, anvisierbar, Gruppe "targetable")
+  - StaticBody3D (portal.gd)
+  - Kollision (CylinderShape3D)
+  - Mesh (CylinderMesh, Platzhalter)
+  - Health (Node, health.gd)
+  - HitArea (Area3D, Trefferbereich)
+    - CollisionShape3D
+  - PortalSpawner (Node, portal_spawner.gd)
+    - Spawnt 3 Gegner bei 85%, 70%, 55%, 40%, 25%, 10% Leben (einmalig)
+    - Portal = Spawnpunkt der Gegner
+    - 10m Aggro-Radius um das Portal
+  - Healthbar (Sprite3D + SubViewport, healthbar.gd)
+
 - enemy.tscn — Gegner
  - CharacterBody3D (enemy.gd)
  - Kollision (CapsuleShape3D)
@@ -55,7 +70,7 @@
  - EnemyMovement (Node, enemy_movement.gd)
  - EnemyCombat (Node, enemy_combat.gd)
  - EnemyAggro (Node, enemy_aggro.gd)
-  - Healthbar (Sprite3D + SubViewport, über dem Gegner, enemy_healthbar.gd)
+  - Healthbar (Sprite3D + SubViewport, über dem Gegner, healthbar.gd)
    - SubViewport
      - Border (ColorRect, gelb, sichtbar bei Anvisierung)
      - HealthBar (ProgressBar, grün)
@@ -71,9 +86,11 @@
  - 3 Utility: Schild sofort auf 100%, 5s CD, kein GCD
  - 4 Ult: 4x Single + 2x AOE um Ziel, 30s CD, GCD
  - 5 Passive: 50% mehr Schaden (permanent aktiv, kein CD)
- targeting.gd — Klick/TAB anvisieren, Kampfmodus bei Gegner-Angriff, Auto-Targeting auf nächsten Gegner
+- targeting.gd — Klick/TAB anvisieren (Gruppe "targetable"), Kampfmodus bei Gegner-Angriff, Auto-Targeting auf nächsten Gegner
 - event_bus.gd — Autoload-Singleton, globale Signals
- enemy.gd — Gegner-Kern, State Machine (Idle, Verfolgen, Angreifen, Zurückkehren), alarmiert Gegner in 3m
+- portal.gd — Portal-Kern, Gruppe "targetable", kein Kampf/Aggro/State
+- portal_spawner.gd — Spawnt Gegner bei Lebensschwellen, setzt Portal als Spawnpunkt
+- enemy.gd — Gegner-Kern, State Machine (Idle, Verfolgen, Angreifen, Zurückkehren), alarmiert Gegner in 3m, Gruppe "enemies" + "targetable"
 - enemy_movement.gd — Navigation zum Ziel/Spawnpunkt
 - enemy_combat.gd — Angriff über Event (damage_requested)
 - enemy_aggro.gd — Aggro-Tabelle (Spieler → Wert), wählt Ziel mit höchstem Aggro
@@ -81,13 +98,15 @@
  - Heilung = Aggro (0.5x)
  - Tank = Aggro-Multiplikator (2x)
  - Aggro verfällt -1/s
+  - Außerhalb 10m Portal-Radius: Aggro verfällt 1% * 2 je s (1%, 2%, 4%, 8%, ...)
+  - Ohne Aggro: Gegner kehrt zum Portal zurück, regeneriert 10% Leben/s bis 100%, dann 1%/s
  - Bei Spieler-Tod → Aggro auf 0
 - health.gd — Leben, 1/s Regeneration, Tod bei 0 (wiederverwendbar)
 - shield.gd — Schild, regeneriert nach 3s ohne Schaden, in 5s voll (wiederverwendbar)
 - player_class.gd — Klassenwechsel ALT+1 bis ALT+3 (Tank/Schaden/Heiler), tauscht AbilitySet
 - respawn.gd — Bei Tod: Spieler deaktivieren, 3s Timer, Respawn am Startpunkt, Leben/Schild voll
 - hud.gd — Reagiert auf Events, aktualisiert HealthBar/ShieldBar/AbilityBar/RespawnTimer
- enemy_healthbar.gd — Liest Health/Shield vom Gegner, aktualisiert Balken über dem Gegner, gelber Rand bei Anvisierung, blauer Lebensbalken wenn Spieler Ziel ist
+- healthbar.gd — Liest Health/Shield (optional) vom Parent, gelber Rand bei Anvisierung, blauer Lebensbalken wenn Spieler Ziel ist (nur bei Gegnern)

 ## Abilities (Resources)
 - ability.gd (Resource) — name, type, damage, range, cooldown, uses_gcd, execute()
@@ -113,3 +132,4 @@
 - respawn_tick(timer) — Respawn-Countdown Update
 - enemy_engaged(enemy, target) — Gegner hat Spieler anvisiert
 - cooldown_tick(cooldowns, max_cooldowns, gcd_timer) — Cooldown-Update für HUD
+- portal_spawn(portal, enemies) — Portal hat Gegner gespawnt
--- a/scenes/enemy/enemy.tscn
+++ b/scenes/enemy/enemy.tscn
@@ -3,7 +3,7 @@
 [ext_resource type="Script" path="res://scripts/enemy/enemy.gd" id="1"]
 [ext_resource type="Script" path="res://scripts/components/health.gd" id="2"]
 [ext_resource type="Script" path="res://scripts/components/shield.gd" id="3"]
-[ext_resource type="Script" path="res://scripts/enemy/enemy_healthbar.gd" id="4"]
+[ext_resource type="Script" path="res://scripts/components/healthbar.gd" id="4"]
 [ext_resource type="Script" path="res://scripts/enemy/enemy_movement.gd" id="5"]
 [ext_resource type="Script" path="res://scripts/enemy/enemy_combat.gd" id="6"]
 [ext_resource type="Script" path="res://scripts/enemy/enemy_aggro.gd" id="7"]
--- a/scenes/player/player.tscn
+++ b/scenes/player/player.tscn
@@ -4,14 +4,14 @@
 [ext_resource type="Script" uid="uid://cohjyjge1kqxb" path="res://scripts/player/camera.gd" id="2"]
 [ext_resource type="Script" uid="uid://fg87dh8fbc8" path="res://scripts/player/movement.gd" id="3"]
 [ext_resource type="Script" uid="uid://d15til6fsxw5b" path="res://scripts/player/combat.gd" id="4"]
-[ext_resource type="Script" path="res://scripts/components/health.gd" id="5"]
-[ext_resource type="Script" path="res://scripts/components/shield.gd" id="6"]
-[ext_resource type="Script" path="res://scripts/player/targeting.gd" id="8"]
-[ext_resource type="Script" path="res://scripts/player/respawn.gd" id="9"]
-[ext_resource type="Script" path="res://scripts/player/player_class.gd" id="10"]
-[ext_resource type="Resource" path="res://resources/ability_sets/tank_set.tres" id="11"]
-[ext_resource type="Resource" path="res://resources/ability_sets/damage_set.tres" id="12"]
-[ext_resource type="Resource" path="res://resources/ability_sets/healer_set.tres" id="13"]
+[ext_resource type="Script" uid="uid://b053b4fkkeaod" path="res://scripts/components/health.gd" id="5"]
+[ext_resource type="Script" uid="uid://bpfw71oprcvou" path="res://scripts/components/shield.gd" id="6"]
+[ext_resource type="Script" uid="uid://b05nkuryipwny" path="res://scripts/player/targeting.gd" id="8"]
+[ext_resource type="Script" uid="uid://dw3dtax5bx0of" path="res://scripts/player/respawn.gd" id="9"]
+[ext_resource type="Script" uid="uid://rus4umqvvqq4" path="res://scripts/player/player_class.gd" id="10"]
+[ext_resource type="Resource" uid="uid://cgxtn7dfs40bh" path="res://resources/ability_sets/tank_set.tres" id="11"]
+[ext_resource type="Resource" uid="uid://beodknb6i1pm4" path="res://resources/ability_sets/damage_set.tres" id="12"]
+[ext_resource type="Resource" uid="uid://kcwuhnqy34mj" path="res://resources/ability_sets/healer_set.tres" id="13"]

 [sub_resource type="CapsuleShape3D" id="CapsuleShape3D_1"]
 radius = 0.3
@@ -43,19 +43,19 @@ script = ExtResource("3")
 [node name="Combat" type="Node" parent="." unique_id=1754235583]
 script = ExtResource("4")

-[node name="Targeting" type="Node" parent="."]
+[node name="Targeting" type="Node" parent="." unique_id=592540710]
 script = ExtResource("8")

-[node name="Health" type="Node" parent="."]
+[node name="Health" type="Node" parent="." unique_id=1872357630]
 script = ExtResource("5")

-[node name="Shield" type="Node" parent="."]
+[node name="Shield" type="Node" parent="." unique_id=716948065]
 script = ExtResource("6")

-[node name="Respawn" type="Node" parent="."]
+[node name="Respawn" type="Node" parent="." unique_id=1562314386]
 script = ExtResource("9")

-[node name="PlayerClass" type="Node" parent="."]
+[node name="PlayerClass" type="Node" parent="." unique_id=134158295]
 script = ExtResource("10")
 tank_set = ExtResource("11")
 damage_set = ExtResource("12")
--- a/scenes/portal/portal.tscn
+++ b/scenes/portal/portal.tscn
@@ -0,0 +1,78 @@
+[gd_scene format=3]
+
+[ext_resource type="Script" path="res://scripts/portal/portal.gd" id="1"]
+[ext_resource type="Script" path="res://scripts/components/health.gd" id="2"]
+[ext_resource type="Script" path="res://scripts/components/healthbar.gd" id="3"]
+[ext_resource type="Script" path="res://scripts/portal/portal_spawner.gd" id="4"]
+
+[sub_resource type="CylinderShape3D" id="CylinderShape3D_1"]
+radius = 1.0
+height = 2.0
+
+[sub_resource type="CylinderShape3D" id="CylinderShape3D_2"]
+radius = 1.0
+height = 2.0
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_1"]
+albedo_color = Color(0.5, 0.1, 0.8, 1)
+
+[sub_resource type="CylinderMesh" id="CylinderMesh_1"]
+top_radius = 1.0
+bottom_radius = 1.0
+height = 2.0
+material = SubResource("StandardMaterial3D_1")
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_health_bg"]
+bg_color = Color(0.3, 0.1, 0.1, 1)
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_health_fill"]
+bg_color = Color(0.2, 0.8, 0.2, 1)
+
+[node name="Portal" type="StaticBody3D"]
+script = ExtResource("1")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="."]
+shape = SubResource("CylinderShape3D_1")
+
+[node name="Mesh" type="MeshInstance3D" parent="."]
+mesh = SubResource("CylinderMesh_1")
+
+[node name="Health" type="Node" parent="."]
+script = ExtResource("2")
+max_health = 500.0
+
+[node name="HitArea" type="Area3D" parent="."]
+collision_layer = 4
+collision_mask = 0
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="HitArea"]
+shape = SubResource("CylinderShape3D_2")
+
+[node name="PortalSpawner" type="Node" parent="."]
+script = ExtResource("4")
+
+[node name="Healthbar" type="Sprite3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 2.5, 0)
+billboard = 1
+pixel_size = 0.01
+script = ExtResource("3")
+
+[node name="SubViewport" type="SubViewport" parent="Healthbar"]
+transparent_bg = true
+size = Vector2i(104, 15)
+
+[node name="Border" type="ColorRect" parent="Healthbar/SubViewport"]
+offset_right = 104.0
+offset_bottom = 15.0
+color = Color(1, 0.9, 0.2, 1)
+
+[node name="HealthBar" type="ProgressBar" parent="Healthbar/SubViewport"]
+offset_left = 2.0
+offset_top = 2.0
+offset_right = 102.0
+offset_bottom = 13.0
+theme_override_styles/background = SubResource("StyleBoxFlat_health_bg")
+theme_override_styles/fill = SubResource("StyleBoxFlat_health_fill")
+max_value = 500.0
+value = 500.0
+show_percentage = false
--- a/scenes/world.tscn
+++ b/scenes/world.tscn
@@ -1,7 +1,7 @@
 [gd_scene format=3 uid="uid://dy1icabu2ssbw"]

-[ext_resource type="PackedScene" path="res://scenes/enemy/enemy.tscn" id="enemy"]
 [ext_resource type="PackedScene" path="res://scenes/hud/hud.tscn" id="hud"]
+[ext_resource type="PackedScene" path="res://scenes/portal/portal.tscn" id="portal"]
 [ext_resource type="PackedScene" uid="uid://cdnkbt1f0db7e" path="res://scenes/player/player.tscn" id="player"]

 [sub_resource type="NavigationMesh" id="NavigationMesh_1"]
@@ -51,14 +51,5 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -7, 1, -7)

 [node name="HUD" parent="." unique_id=24362518 instance=ExtResource("hud")]

-[node name="Enemy1" parent="." unique_id=1152011787 instance=ExtResource("enemy")]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 5, 0.75, 5)
-
-[node name="Enemy2" parent="." unique_id=877649363 instance=ExtResource("enemy")]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 7, 0.75, 5)
-
-[node name="Enemy3" parent="." unique_id=1831736748 instance=ExtResource("enemy")]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 5, 0.75, 7)
-
-[node name="Enemy4" parent="." unique_id=1818643429 instance=ExtResource("enemy")]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 7, 0.75, 7)
+[node name="Portal" parent="." instance=ExtResource("portal")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 5, 0, 5)
--- a/scripts/enemy/enemy_healthbar.gd
+++ b/scripts/enemy/enemy_healthbar.gd
@@ -2,19 +2,24 @@ extends Sprite3D

@onready var viewport: SubViewport = $SubViewport
@onready var health_bar: ProgressBar = $SubViewport/HealthBar
-@onready var shield_bar: ProgressBar = $SubViewport/ShieldBar
@onready var border: ColorRect = $SubViewport/Border
@onready var health: Node = get_parent().get_node("Health")
-@onready var shield: Node = get_parent().get_node("Shield")
-@onready var enemy: CharacterBody3D = get_parent()
+@onready var parent_node: Node = get_parent()

+var shield: Node = null
+var shield_bar: ProgressBar = null
 var style_normal: StyleBoxFlat
 var style_aggro: StyleBoxFlat

 func _ready() -> void:
  texture = viewport.get_texture()
  health_bar.max_value = health.max_health
-  shield_bar.max_value = shield.max_shield
+  shield = get_parent().get_node_or_null("Shield")
+  shield_bar = $SubViewport.get_node_or_null("ShieldBar")
+  if shield and shield_bar:
+    shield_bar.max_value = shield.max_shield
+  elif shield_bar:
+    shield_bar.visible = false
  border.visible = false
  style_normal = health_bar.get_theme_stylebox("fill").duplicate()
  style_aggro = style_normal.duplicate()
@@ -23,9 +28,10 @@ func _ready() -> void:

 func _process(_delta: float) -> void:
  health_bar.value = health.current_health
-  shield_bar.value = shield.current_shield
+  if shield and shield_bar:
+    shield_bar.value = shield.current_shield
  var player: Node = get_tree().get_first_node_in_group("player")
-  if player and enemy.target == player:
+  if player and "target" in parent_node and parent_node.target == player:
    health_bar.add_theme_stylebox_override("fill", style_aggro)
  else:
    health_bar.add_theme_stylebox_override("fill", style_normal)
--- a/scripts/components/healthbar.gd.uid
+++ b/scripts/components/healthbar.gd.uid
@@ -0,0 +1 @@
+uid://d1w7vm7t3k3ts
--- a/scripts/enemy/enemy.gd
+++ b/scripts/enemy/enemy.gd
@@ -5,6 +5,7 @@ enum State { IDLE, CHASE, ATTACK, RETURN }
 var state: int = State.IDLE
 var target: Node3D = null
 var spawn_position: Vector3
+var portal: Node3D = null
 var gravity: float = ProjectSettings.get_setting("physics/3d/default_gravity")

@onready var health: Node = $Health
@@ -12,6 +13,7 @@ var gravity: float = ProjectSettings.get_setting("physics/3d/default_gravity")
 func _ready() -> void:
  spawn_position = global_position
  add_to_group("enemies")
+  add_to_group("targetable")
  EventBus.entity_died.connect(_on_entity_died)

 func _on_entity_died(entity: Node) -> void:
@@ -39,7 +41,7 @@ func _engage(new_target: Node3D) -> void:
 func _alert_nearby() -> void:
  var enemies := get_tree().get_nodes_in_group("enemies")
  for enemy in enemies:
-    if enemy != self and is_instance_valid(enemy):
+    if enemy != self and is_instance_valid(enemy) and "state" in enemy:
      if enemy.state == enemy.State.IDLE:
        var dist: float = global_position.distance_to(enemy.global_position)
        if dist <= 3.0:
--- a/scripts/enemy/enemy_aggro.gd
+++ b/scripts/enemy/enemy_aggro.gd
@@ -1,7 +1,9 @@
 extends Node

 const AGGRO_DECAY := 1.0
+const PORTAL_RADIUS := 10.0
 var aggro_table: Dictionary = {}
+var seconds_outside := 0.0

@onready var enemy: CharacterBody3D = get_parent()

@@ -10,15 +12,32 @@ func _ready() -> void:
  EventBus.entity_died.connect(_on_entity_died)

 func _process(delta: float) -> void:
+  var outside_portal := false
+  if enemy.portal and is_instance_valid(enemy.portal):
+    var dist_to_portal: float = enemy.global_position.distance_to(enemy.portal.global_position)
+    if dist_to_portal > PORTAL_RADIUS:
+      outside_portal = true
+      seconds_outside += delta
+    else:
+      seconds_outside = 0.0
+
  for player in aggro_table.keys():
-    aggro_table[player] -= AGGRO_DECAY * delta
+    var decay: float = AGGRO_DECAY * delta
+    if outside_portal:
+      var bonus_decay: float = aggro_table[player] * 0.01 * pow(2, seconds_outside) * delta
+      decay += bonus_decay
+    aggro_table[player] -= decay
    if aggro_table[player] <= 0:
      aggro_table.erase(player)
+
  var top_target: Node = _get_top_target()
  if top_target and top_target != enemy.target:
    enemy.target = top_target
    if enemy.state == enemy.State.IDLE or enemy.state == enemy.State.RETURN:
      enemy.state = enemy.State.CHASE
+  elif not top_target and enemy.state != enemy.State.IDLE and enemy.state != enemy.State.RETURN:
+    enemy.target = null
+    enemy.state = enemy.State.RETURN

 func _on_damage_dealt(attacker: Node, target: Node, amount: float) -> void:
  if target != enemy:
--- a/scripts/enemy/enemy_healthbar.gd.uid
+++ b/scripts/enemy/enemy_healthbar.gd.uid
@@ -1 +0,0 @@
-uid://dwqx03nfypa7u
--- a/scripts/enemy/enemy_movement.gd
+++ b/scripts/enemy/enemy_movement.gd
@@ -1,13 +1,14 @@
 extends Node

 const SPEED := 3.0
-const LEASH_RANGE := 15.0
 const ATTACK_RANGE := 2.0
+const REGEN_FAST := 0.10
+const REGEN_SLOW := 0.01

@onready var enemy: CharacterBody3D = get_parent()
@onready var nav_agent: NavigationAgent3D = get_parent().get_node("NavigationAgent3D")

-func _physics_process(_delta: float) -> void:
+func _physics_process(delta: float) -> void:
  match enemy.state:
    enemy.State.IDLE:
      enemy.velocity.x = 0
@@ -15,17 +16,12 @@ func _physics_process(_delta: float) -> void:
    enemy.State.CHASE:
      _chase()
    enemy.State.RETURN:
-      _return_to_spawn()
+      _return_to_spawn(delta)

 func _chase() -> void:
  if not is_instance_valid(enemy.target):
    enemy.state = enemy.State.RETURN
    return
-  var dist_to_spawn := enemy.global_position.distance_to(enemy.spawn_position)
-  if dist_to_spawn > LEASH_RANGE:
-    enemy.state = enemy.State.RETURN
-    enemy.target = null
-    return
  var dist_to_target := enemy.global_position.distance_to(enemy.target.global_position)
  if dist_to_target <= ATTACK_RANGE:
    enemy.state = enemy.State.ATTACK
@@ -37,7 +33,7 @@ func _chase() -> void:
  enemy.velocity.x = direction.x * SPEED
  enemy.velocity.z = direction.z * SPEED

-func _return_to_spawn() -> void:
+func _return_to_spawn(delta: float) -> void:
  var dist := enemy.global_position.distance_to(enemy.spawn_position)
  if dist < 1.0:
    enemy.state = enemy.State.IDLE
@@ -50,3 +46,13 @@ func _return_to_spawn() -> void:
  direction.y = 0
  enemy.velocity.x = direction.x * SPEED
  enemy.velocity.z = direction.z * SPEED
+  _regenerate(delta)
+
+func _regenerate(delta: float) -> void:
+  var health: Node = enemy.get_node("Health")
+  if health.current_health < health.max_health:
+    var rate: float = REGEN_FAST if health.current_health < health.max_health else REGEN_SLOW
+    if health.current_health >= health.max_health * 0.99:
+      rate = REGEN_SLOW
+    health.current_health = min(health.current_health + health.max_health * rate * delta, health.max_health)
+    EventBus.health_changed.emit(enemy, health.current_health, health.max_health)
--- a/scripts/event_bus.gd
+++ b/scripts/event_bus.gd
@@ -14,3 +14,4 @@ signal shield_changed(entity, current, max_val)
 signal respawn_tick(timer)
 signal enemy_engaged(enemy, target)
 signal cooldown_tick(cooldowns, max_cooldowns, gcd_timer)
+signal portal_spawn(portal, enemies)
--- a/scripts/player/combat.gd
+++ b/scripts/player/combat.gd
@@ -1,6 +1,6 @@
 extends Node

-const GCD_TIME := 1.0
+const GCD_TIME := 0.5

@onready var player: CharacterBody3D = get_parent()
@onready var targeting: Node = get_parent().get_node("Targeting")
--- a/scripts/player/hud.gd
+++ b/scripts/player/hud.gd
@@ -1,6 +1,6 @@
 extends CanvasLayer

-const GCD_TIME := 1.0
+const GCD_TIME := 0.5

@onready var health_bar: ProgressBar = $HealthBar
@onready var shield_bar: ProgressBar = $ShieldBar
--- a/scripts/player/targeting.gd
+++ b/scripts/player/targeting.gd
@@ -49,16 +49,16 @@ func _try_target_under_mouse(mouse_pos: Vector2) -> void:
    set_target(null)

 func _cycle_target() -> void:
-  var enemies := get_tree().get_nodes_in_group("enemies")
-  if enemies.is_empty():
+  var targets := get_tree().get_nodes_in_group("targetable")
+  if targets.is_empty():
    set_target(null)
    return
-  if current_target == null or current_target not in enemies:
-    set_target(enemies[0])
+  if current_target == null or current_target not in targets:
+    set_target(targets[0])
    return
-  var idx := enemies.find(current_target)
-  var next_idx := (idx + 1) % enemies.size()
-  set_target(enemies[next_idx])
+  var idx := targets.find(current_target)
+  var next_idx := (idx + 1) % targets.size()
+  set_target(targets[next_idx])

 func set_target(target: Node3D) -> void:
  current_target = target
--- a/scripts/portal/portal.gd
+++ b/scripts/portal/portal.gd
@@ -0,0 +1,4 @@
+extends StaticBody3D
+
+func _ready() -> void:
+  add_to_group("targetable")
--- a/scripts/portal/portal.gd.uid
+++ b/scripts/portal/portal.gd.uid
@@ -0,0 +1 @@
+uid://byjxj4mq84gki
--- a/scripts/portal/portal_spawner.gd
+++ b/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)
--- a/scripts/portal/portal_spawner.gd.uid
+++ b/scripts/portal/portal_spawner.gd.uid
@@ -0,0 +1 @@
+uid://begrg74oh76pu