## Configuration data for enemy waves.
##
## Defines spawn count, timing, enemy stats, and difficulty modifiers for each wave.
## Designed to be saved as a Resource (.tres file) for easy encounter design.
class_name WaveConfig
extends Resource

## Wave number (1-indexed)
@export var wave_number: int = 1

## Number of enemies to spawn in this wave
@export var enemy_count: int = 3

## Interval between enemy spawns in seconds
@export var spawn_interval: float = 1.0

## Enemy falling speed (units per second on Y-axis)
@export var enemy_speed: float = 5.0

## Base health per enemy
@export var enemy_health: int = 10

## Global difficulty multiplier for this wave (scales damage, health, count)
@export var difficulty_multiplier: float = 1.0

## Optional: Enemy type/archetype for variety (placeholder)
@export var enemy_type: StringName = &"basic"

## Optional: Special modifiers for the wave
@export var wave_modifiers: PackedStringArray = []


func _init(p_wave_number: int = 1) -> void:
	wave_number = p_wave_number
	_scale_difficulty()


## Auto-scale difficulty based on wave number
func _scale_difficulty() -> void:
	difficulty_multiplier = 1.0 + (wave_number - 1) * 0.2
	enemy_count = max(1, int(3 + (wave_number - 1) * 0.5))
	enemy_health = int(10 * difficulty_multiplier)
	enemy_speed = 5.0 + (wave_number - 1) * 0.5


## Get adjusted enemy count based on difficulty
func get_enemy_count() -> int:
	return int(enemy_count * difficulty_multiplier)


## Get adjusted enemy health based on difficulty
func get_enemy_health() -> int:
	return int(enemy_health * difficulty_multiplier)


## Get wave description for UI display
func get_wave_description() -> String:
	return "Wave %d: %d enemies (Speed: %.1f, Health: %d)" % [
		wave_number,
		get_enemy_count(),
		enemy_speed,
		get_enemy_health()
	]


## Check if wave has a specific modifier
func has_modifier(modifier_name: StringName) -> bool:
	return modifier_name in wave_modifiers