extends Node

# StaticTektonManager
# Handles spawning and placement of Static Tektons in restricted zones.

const STAND_SCENE_PATH = "res://scenes/static_tekton_stand.tscn"
const TEKTON_SCENE_PATH = "res://scenes/tekton.tscn"
const STATIC_CONTROLLER_SCRIPT = "res://scripts/static_tekton_controller.gd"

# Zone Definitions based on CameraContextManager logic
# 9 Zones in a 3x3 grid (approximate for 14x14 map)
# Top-Left, Top-Mid, Top-Right
# Mid-Left, Mid-Mid, Mid-Right
# Bot-Left, Bot-Mid, Bot-Right

func calculate_spawn_points(count: int, gridmap: Node) -> Array:
	"""
	Calculates random spawn positions for static tektons.
	Returns an Array of Vector2i positions.
	"""
	if count <= 0 or not gridmap: return []
	
	print("[StaticTektonManager] Calculating %d static tekton positions..." % count)
	
	# 1. Define Zones
	var width = gridmap.columns
	var depth = gridmap.rows
	
	# Simple 3x3 grid partition
	var zone_w = width / 3
	var zone_d = depth / 3
	
	var all_zones = []
	for z in range(3):
		for x in range(3):
			# Create Rect2i for each zone (x, y, w, h)
			var zone_rect = Rect2i(x * zone_w, z * zone_d, zone_w, zone_d)
			all_zones.append(zone_rect)
			
	# 2. Select Zones (Random Distinct)
	all_zones.shuffle()
	var selected_zones = all_zones.slice(0, count)
	
	var spawn_points = []
	
	# 3. Pick Point in each Selected Zone
	for i in range(selected_zones.size()):
		var zone = selected_zones[i]
		var pos = _pick_spot_in_zone(zone, gridmap)
		if pos != Vector2i(-1, -1):
			spawn_points.append(pos)
			
	return spawn_points

func _pick_spot_in_zone(zone: Rect2i, gridmap: Node) -> Vector2i:
	# Find a valid 3x3 spot in the zone
	# The returned position is the CENTER of the 3x3 area
	var attempts = 0
	
	while attempts < 30:
		attempts += 1
		# Ensure center is at least 1 tile away from edges of the map to fit 3x3
		# zone.position might be 0,0.
		var min_x = max(1, zone.position.x + 1)
		var max_x = min(gridmap.columns - 2, zone.position.x + zone.size.x - 2)
		var min_y = max(1, zone.position.y + 1)
		var max_y = min(gridmap.rows - 2, zone.position.y + zone.size.y - 2)
		
		if min_x > max_x or min_y > max_y:
			break # Zone too small
			
		var x = randi_range(min_x, max_x)
		var y = randi_range(min_y, max_y)
		var center = Vector2i(x, y)
		
		# Check 3x3 area validity
		var valid_area = true
		for dx in range(-1, 2):
			for dy in range(-1, 2):
				var check_pos = Vector3i(center.x + dx, 0, center.y + dy)
				if gridmap.get_cell_item(check_pos) == -1:
					valid_area = false # Void/Hole
					break
				# Optionally check for other obstacles?
		
		if valid_area:
			return center
	
	print("[StaticTektonManager] Failed to find 3x3 spot in zone %s" % zone)
	return Vector2i(-1, -1)