Migrated current spawning logic to dedicated wave node.

wave.gd

@@ -0,0 +1,52 @@
+extends Node2D
+
+var wave_count: int = 0
+var enemy_count: int = 0
+var enemy = preload("res://scenes/enemy.tscn")
+
+const COLS: int = 9
+const ROWS: int = 3
+
+func _ready():
+  wave_count += 1
+  EventBus.enemy_died.connect(_on_enemy_died)
+
+
+func spawn_enemies():
+    print("Enemy Wave: ", wave_count)
+    for x in range(COLS):
+      for y in range(ROWS):
+            var e = enemy.instantiate()
+            var pos = Vector2(x * (16 + 8) + 24, 16 * 4 + y * 16)
+            add_child(e)
+            e.start(pos)
+            enemy_count = ROWS * COLS
+            await get_tree().process_frame
+            print_debug("Remaining enemies: ", enemy_count, ", ", get_tree().get_nodes_in_group("enemies").size())
+    
+
+func _on_enemy_died():
+    enemy_count -= 1
+    print_debug(enemy_count)
+    if enemy_count == 0:
+      print_debug("Remaining enemies: ", enemy_count, ", ", get_tree().get_nodes_in_group("enemies").size())
+      # win_game()
+      await get_tree().create_timer(2).timeout
+      wave_count += 1
+      spawn_enemies()
+    if enemy_count == ROWS * COLS / 2:
+        print_debug("Enemy count is 50%")
+        update_enemy_aggression(2,10)
+        EventBus.goose_talk.emit()
+    if enemy_count == ROWS * COLS / 4:
+        print_debug("Enemy count is 25%")
+        update_enemy_aggression(1,1)
+
+func update_enemy_aggression(low,high):
+  var nodes = get_tree().get_nodes_in_group("enemies")
+
+  for node in nodes:
+   if node is Area2D:
+     node.enemy_move_aggression = randf_range(low,high)
+     node.enemy_shoot_aggression = randf_range(low,high)
+     node.tween_speed = min(low,high) - .75