Sync survivor spawning with per-floor pacing

Clear runners on each new floor as well

scenes/component_spawn.gd

@@ -1,44 +1,43 @@
 extends Node3D
 
-var survivors: int = 5
-var survivor_rate: float = .75
-var speed_modifer: int = 0
-var spawn_readiness: bool = false
+@export var batch_duration: float = 16.0
+@export var lateral_variance: float = 1.5
+
+var _active_walkers: Array[Node] = []
+var _batch_generation: int = 0
 
 @onready var survivor = preload("res://scenes/survivor.tscn")
-@onready var world = preload("res://scenes/world.tscn")
-
 @onready var survivor_spawn = get_node("/root/Game/World/SuvivorSpawn")
-@onready var start_pos = survivor_spawn.global_position
+@onready var start_pos: Vector3 = survivor_spawn.global_position
 
-func _ready() -> void:
-	start()
+func _enter_tree() -> void:
+	EventBus.floor_started.connect(_on_floor_started, CONNECT_DEFERRED)
 
-func start() -> void:
-	spawn_readiness = true
-	spawn_survivor()
+func _on_floor_started(count: int) -> void:
+	_batch_generation += 1
+	_clear_active_walkers()
+	if count <= 0:
+		return
+	_run_batch(count, _batch_generation)
 
-#func _physics_process(delta):
-	#if spawn_readiness == true:
-		#spawn_survivor()
-		#spawn_readiness = false
-		#
-	#else: pass
+func _clear_active_walkers() -> void:
+	for w in _active_walkers:
+		if is_instance_valid(w):
+			w.queue_free()
+	_active_walkers.clear()
 
-func spawn_survivor():
-	
-	if spawn_readiness == false: pass
-	
-	else:
-	
-		var survivor_delay: float = randf_range(1, 2.5)
-		var start_variance = Vector3((randf_range(-1, 2)),0,0)
-		
-		for x in range(survivors):
-			var s = survivor.instantiate()
-			get_tree().root.add_child.call_deferred(s)
-			#get_node("/root/Game/World").add_child(s)
-			s.position = start_pos + start_variance
-			await get_tree().create_timer(survivor_rate * survivor_delay).timeout
-			spawn_readiness = true
+func _run_batch(count: int, generation: int) -> void:
+	var gap: float = batch_duration / float(count)
+	for i in range(count):
+		if generation != _batch_generation:
+			return
+		_spawn_one()
+		var jitter: float = randf_range(-gap * 0.25, gap * 0.25)
+		await get_tree().create_timer(max(0.05, gap + jitter)).timeout
 
+func _spawn_one() -> void:
+	var s = survivor.instantiate()
+	var offset := Vector3(randf_range(-lateral_variance, lateral_variance), 0, 0)
+	get_tree().root.add_child.call_deferred(s)
+	s.position = start_pos + offset
+	_active_walkers.append(s)

scenes/elevator_panel.gd

@@ -48,6 +48,7 @@ func _start_floor():
 
 	EventBus.people_changed.emit(people_in_elevator, threshold)
 	EventBus.floor_changed.emit(current_floor)
+	EventBus.floor_started.emit(survivors_remaining)
 
 	var screen = $PanelMargin/PanelColumn/Screen
 	screen.start()

scenes/game.gd

@@ -1,6 +1,4 @@
 extends Node3D
 
 func _ready() -> void:
-	$ComponentSpawn.spawn_survivor()
-	
-	
+	pass

scripts/event_bus.gd

@@ -8,5 +8,6 @@ signal score_changed(new_score: int)
 signal people_changed(count: int, threshold: int)
 signal game_won
 signal game_lost
+signal floor_started(survivor_count: int)
 
 @warning_ignore_restore("unused_signal") # put any future signals you add between the two ignore annotations