ghost.gd

extends CharacterBody2D

@export var speed: float = 80.0
@export var ghost_color_name: String = "red" # red, blue, pink
@export var behavior: String = "chaser" # "chaser" or "random"

var directions = [Vector2.UP, Vector2.DOWN, Vector2.LEFT, Vector2.RIGHT]
var current_dir: Vector2 = Vector2.ZERO
var scared: bool = false
var pacman: Node = null

func _ready():
	pacman = get_tree().current_scene.get_node("Pacman")
	add_to_group("Ghosts")
	pick_new_direction()
	update_animation()

func _physics_process(delta):
	# Decide movement direction
	if behavior == "chaser" and pacman:
		var dir_to_pacman = (pacman.global_position - global_position).normalized()
		if abs(dir_to_pacman.x) > abs(dir_to_pacman.y):
			current_dir = Vector2(sign(dir_to_pacman.x), 0)
		else:
			current_dir = Vector2(0, sign(dir_to_pacman.y))
	elif behavior == "random" and randf() < 0.02:
		pick_new_direction()

	position += current_dir * speed * delta
	# Update animation
	update_animation()

func pick_new_direction():
	current_dir = directions[randi() % directions.size()]

func update_animation():
	var prefix = ""
	if scared:
		prefix = "red_"
	else:
		prefix = ghost_color_name + "_"

	if current_dir == Vector2.DOWN:
		$AnimatedSprite2D.animation = prefix + "down"
	elif current_dir == Vector2.LEFT:
		$AnimatedSprite2D.animation = prefix + "left"
	elif current_dir == Vector2.RIGHT:
		$AnimatedSprite2D.animation = prefix + "right"
	$AnimatedSprite2D.play()


func _on_area_2d_body_entered(body: Node2D) -> void:
	# Check if the ghost hit Pac-Man
	if body.is_in_group("Pacman"):
		body.lose_life()