# Player.gd
# Steuert den Spielercharakter: Bewegung, Kamera, HP, Angriff, Zielauswahl
extends CharacterBody3D

const SPEED = 5.0
const JUMP_VELOCITY = 4.5
const GRAVITY = 9.8

var max_hp = 100
var current_hp = 100
var can_attack = true
var target = null          # Aktuell markierter Gegner
var equipped_weapon = null # Ausgerüstete Waffe (null = unbewaffnet, Schaden = 1)

@onready var camera_pivot = $CameraPivot
@onready var camera = $CameraPivot/Camera3D
@onready var hud = $HUD

func _ready():
	hud.update_health(current_hp, max_hp)
	hud.set_active_slot(0)

# Schaden am Spieler abziehen und HP-Leiste aktualisieren
func take_damage(amount):
	current_hp = clamp(current_hp - amount, 0, max_hp)
	hud.update_health(current_hp, max_hp)
	if current_hp <= 0:
		die()

# HP heilen und HP-Leiste aktualisieren
func heal(amount):
	current_hp = clamp(current_hp + amount, 0, max_hp)
	hud.update_health(current_hp, max_hp)

func die():
	print("Spieler gestorben!")

# Schaden basierend auf ausgerüsteter Waffe (unbewaffnet = 1)
func get_attack_damage() -> int:
	if equipped_weapon == null:
		return 1
	return randi_range(equipped_weapon.min_damage, equipped_weapon.max_damage)

# Reichweite basierend auf ausgerüsteter Waffe (unbewaffnet = 1.5)
func get_attack_range() -> float:
	if equipped_weapon == null:
		return 1.5
	return equipped_weapon.range

# Angriffsgeschwindigkeit basierend auf ausgerüsteter Waffe (unbewaffnet = 1.5s)
func get_attack_cooldown() -> float:
	if equipped_weapon == null:
		return 1.5
	return equipped_weapon.attack_speed

# Ziel markieren — start_attack=true startet sofort die Autoattack
func set_target(new_target, start_attack: bool = false):
	if target != null and is_instance_valid(target):
		target.hide_health()
	target = new_target
	target.show_health()
	print("Ziel markiert: ", target.name)
	if start_attack and can_attack:
		autoattack()

# Autoattack: greift wiederholt an solange Ziel gültig ist
func autoattack():
	if target == null or not is_instance_valid(target):
		target = null
		return
	if not can_attack:
		return

	var distance = global_position.distance_to(target.global_position)
	if distance <= get_attack_range():
		can_attack = false
		var dmg = get_attack_damage()
		target.take_damage(dmg)
		print("Autoattack: ", dmg, " Schaden")
		await get_tree().create_timer(get_attack_cooldown()).timeout
		can_attack = true
		autoattack()
	else:
		await get_tree().create_timer(0.5).timeout
		autoattack()

# Raycast von der Kamera auf Mausposition — trifft Gegner mit take_damage()
func _try_select_target(start_attack: bool = false):
	var space_state = get_world_3d().direct_space_state
	var viewport = get_viewport()
	var mouse_pos = viewport.get_mouse_position()
	var ray_origin = camera.project_ray_origin(mouse_pos)
	var ray_end = ray_origin + camera.project_ray_normal(mouse_pos) * 100.0
	var query = PhysicsRayQueryParameters3D.create(ray_origin, ray_end)
	query.exclude = [self]
	var result = space_state.intersect_ray(query)
	if result and result.collider.has_method("take_damage"):
		set_target(result.collider, start_attack)

func _physics_process(delta):
	# Schwerkraft
	if not is_on_floor():
		velocity.y -= GRAVITY * delta

	# Springen
	if Input.is_action_just_pressed("ui_accept") and is_on_floor():
		velocity.y = JUMP_VELOCITY

	# Linksklick: nur markieren
	if Input.is_action_just_pressed("select_target"):
		_try_select_target(false)

	# Rechtsklick: markieren + angreifen
	if Input.is_action_just_pressed("ui_right_mouse"):
		_try_select_target(true)

	# Aktionsleiste 1-9
	if Input.is_action_just_pressed("action_1"):
		hud.set_active_slot(0)
		if target != null:
			autoattack()
	if Input.is_action_just_pressed("action_2"):
		hud.set_active_slot(1)
	if Input.is_action_just_pressed("action_3"):
		hud.set_active_slot(2)
	if Input.is_action_just_pressed("action_4"):
		hud.set_active_slot(3)
	if Input.is_action_just_pressed("action_5"):
		hud.set_active_slot(4)
	if Input.is_action_just_pressed("action_6"):
		hud.set_active_slot(5)
	if Input.is_action_just_pressed("action_7"):
		hud.set_active_slot(6)
	if Input.is_action_just_pressed("action_8"):
		hud.set_active_slot(7)
	if Input.is_action_just_pressed("action_9"):
		hud.set_active_slot(8)

	# TEST: T drücken = 10 Schaden
	if Input.is_action_just_pressed("test_damage"):
		take_damage(10)

	# Eingabe
	var input_dir = Vector2.ZERO
	if Input.is_action_pressed("move_forward"):
		input_dir.y -= 1
	if Input.is_action_pressed("move_back"):
		input_dir.y += 1
	if Input.is_action_pressed("move_left"):
		input_dir.x -= 1
	if Input.is_action_pressed("move_right"):
		input_dir.x += 1

	# Bewegung relativ zur Kamera
	var world_yaw = rotation.y + camera_pivot.rotation.y
	var forward = Vector3(-sin(world_yaw), 0, -cos(world_yaw)).normalized()
	var right = Vector3(cos(world_yaw), 0, -sin(world_yaw)).normalized()
	var direction = (forward * -input_dir.y + right * input_dir.x)

	velocity.x = direction.x * SPEED
	velocity.z = direction.z * SPEED

	# RMB gehalten: Spieler schaut in Kamerarichtung
	if Input.is_mouse_button_pressed(MOUSE_BUTTON_RIGHT):
		rotation.y = world_yaw
		camera_pivot.rotation.y = 0

	move_and_slide()