extends RefCounted
const BALANCE := preload("res://scripts/levels/level_balance.gd")
const WORLD_SIZE := Vector2(5200,3600)
static func enemy_tiers(level: int) -> Array[int]:
	var result: Array[int] = []
	for tier in BALANCE.enemy_tiers(level):
		result.append(tier)
		if tier != 2: result.append(tier)
	return result
static func generate(map: Dictionary) -> Dictionary:
	var rng := RandomNumberGenerator.new()
	rng.seed = int(map.seed)
	var enemies: Array[Dictionary] = []
	var index := 0
	for tier in enemy_tiers(int(map.level)):
		var chosen := Vector2.ZERO
		var best := -INF
		for attempt in 100:
			var candidate := Vector2(rng.randf_range(-2300,2300),rng.randf_range(-1480,1480))
			var clearance := candidate.length()-900.0
			for other in enemies: clearance = minf(clearance,candidate.distance_to(other.position)-220.0)
			if clearance > best:
				best = clearance
				chosen = candidate
			if clearance >= 0: break
		enemies.append({"tier":tier,"position":chosen,"texture_index":rng.randi_range(0,preload("res://scripts/items/alien_ship_catalog.gd").TEXTURES.size()-1),"spawn_index":index})
		index += 1
	var structures: Array[Dictionary] = []
	for prop in 7:
		var width := rng.randf_range(240,460)
		var position := Vector2.ZERO
		for attempt in 100:
			position = Vector2(rng.randf_range(-2200,2200),rng.randf_range(-1350,1350))
			if position.length() < 650: continue
			var clear := true
			for other in structures:
				if position.distance_to(other.position) < (width+float(other.size))*0.5+180: clear = false
			if clear: break
		structures.append({"position":position,"size":width,"rotation":rng.randf_range(-PI,PI),"name":["Rozbity przekaźnik","Archiwum bez głosu","Brama zapomnianych","Wrak konwoju","Pusta stocznia","Echo dawnej cywilizacji","Cmentarz maszyn"][prop]})
	return {"planets":[],"player_start":Vector2.ZERO,"enemies":enemies,"structures":structures}