prototype vibe

systems/invasion_system.gd

@@ -0,0 +1,88 @@
+extends Node
+
+const ENEMY_SCENE: PackedScene = preload("res://scenes/enemy/enemy.tscn")
+const BOSS_STATS: Resource = preload("res://scenes/enemy/boss_stats.tres")
+const INVASION_COUNT := 16
+const SPAWN_RADIUS := 45.0
+
+var active: bool = false
+var invasion_enemies: Array[Node] = []
+
+func _ready() -> void:
+  EventBus.wave_timer_tick.connect(_on_wave_timer_tick)
+  EventBus.entity_died.connect(_on_entity_died)
+  EventBus.tavern_destroyed.connect(_on_tavern_destroyed)
+
+func _on_wave_timer_tick(seconds_remaining: float) -> void:
+  if active:
+    return
+  if seconds_remaining > 0:
+    return
+  var has_alive_red := false
+  for p in get_tree().get_nodes_in_group("red_portal"):
+    if is_instance_valid(p) and PortalData.is_alive(p):
+      has_alive_red = true
+      break
+  if not has_alive_red:
+    return
+  trigger()
+
+func trigger() -> void:
+  active = true
+  invasion_enemies.clear()
+  var tavern: Node = get_tree().get_first_node_in_group("tavern")
+  if not tavern:
+    active = false
+    return
+  var world: Node = get_tree().current_scene
+  var scale: float = PlayerData.level_scale * 10.0
+  for enemy in get_tree().get_nodes_in_group("red_enemies"):
+    if is_instance_valid(enemy):
+      _convert_to_invasion(enemy, tavern)
+  for i in range(INVASION_COUNT):
+    var angle: float = randf() * TAU
+    var pos := Vector3(cos(angle) * SPAWN_RADIUS, 0, sin(angle) * SPAWN_RADIUS)
+    var enemy: Node = ENEMY_SCENE.instantiate()
+    enemy.spawn_scale = scale
+    world.add_child(enemy)
+    enemy.global_position = pos
+    _convert_to_invasion(enemy, tavern)
+  var boss_angle: float = randf() * TAU
+  var boss_pos := Vector3(cos(boss_angle) * SPAWN_RADIUS, 0, sin(boss_angle) * SPAWN_RADIUS)
+  var boss: Node = ENEMY_SCENE.instantiate()
+  boss.add_to_group("boss")
+  boss.stats = BOSS_STATS
+  boss.spawn_scale = scale
+  world.add_child(boss)
+  boss.global_position = boss_pos
+  _convert_to_invasion(boss, tavern)
+  EventBus.invasion_started.emit(invasion_enemies)
+
+func _convert_to_invasion(enemy: Node, tavern: Node) -> void:
+  enemy.add_to_group("invasion")
+  var data_source: Node = BossData if enemy.is_in_group("boss") else EnemyData
+  data_source.set_stat(enemy, "target", tavern)
+  data_source.set_stat(enemy, "state", 1)
+  invasion_enemies.append(enemy)
+
+func _on_entity_died(entity: Node) -> void:
+  if not active:
+    return
+  if entity not in invasion_enemies:
+    return
+  invasion_enemies.erase(entity)
+  var alive_count := 0
+  for e in invasion_enemies:
+    if is_instance_valid(e):
+      alive_count += 1
+  if alive_count == 0:
+    _end_invasion(true)
+
+func _end_invasion(success: bool) -> void:
+  active = false
+  invasion_enemies.clear()
+  EventBus.invasion_ended.emit(success)
+
+func _on_tavern_destroyed() -> void:
+  active = false
+  EventBus.game_over.emit()