extends CharacterBody3D

@export var player: Node3D 
@export var follow_speed: float = 4.0
@export var right_offset: float = 2.5
@export var forward_offset: float = 1
@export var car_cinematic : bool = false

@onready var anim_player: AnimationPlayer = $frog/AnimationPlayer
var size : float = 0.5

@onready var arms: MeshInstance3D = $frog/Armature/Skeleton3D/arms
@onready var body: MeshInstance3D = $frog/Armature/Skeleton3D/body
@onready var eyes: MeshInstance3D = $frog/Armature/Skeleton3D/eyes
@onready var feet: MeshInstance3D = $frog/Armature/Skeleton3D/feet
@onready var hands: MeshInstance3D = $frog/Armature/Skeleton3D/hands
@onready var legs: MeshInstance3D = $frog/Armature/Skeleton3D/legs
@onready var mesh = [ arms, body, eyes, feet, hands, legs ]


# Variables pour la gravité
var gravity = ProjectSettings.get_setting("physics/3d/default_gravity")

func _ready() -> void:
	if !car_cinematic:
		scale = Vector3( size, size, size )
	
func _process(delta: float) -> void:
	if car_cinematic:
		if anim_player.current_animation != "idle":
			anim_player.play("idle")
	else:
		scale_frog()
		# transparent blue color
		var dist = global_transform.origin.distance_to(player.camera.global_transform.origin)
		for m in mesh:
			for i in m.get_surface_override_material_count():
				var mat = m.get_active_material(i)
				if mat:
					mat.set_shader_parameter("object_dist_to_camera", dist)

func _physics_process(delta):
	if not player or car_cinematic:
		return 
	
	# Appliquer la gravité
	if not is_on_floor():
		velocity.y -= gravity * delta

	var target_position = player.global_position + (player.global_transform.basis.x * right_offset) + (-player.global_transform.basis.z * forward_offset)
	global_position.y = target_position.y 

	var direction = global_position.direction_to(target_position)
	var distance = global_position.distance_to(target_position)
	
	if distance > 15: # tp
		target_position = player.global_position + (player.global_transform.basis.x * right_offset) + (-player.global_transform.basis.z * (-forward_offset*4) )

		global_position = target_position
		velocity.x = 0
		velocity.z = 0
	elif distance > 0.5: # walk
		velocity.x = direction.x * follow_speed
		velocity.z = direction.z * follow_speed
	else: # idle
		velocity.x = 0
		velocity.z = 0
	
	var look_target = player.global_position
	look_target.y = global_position.y 
	look_at(look_target, Vector3.UP)
	
	var real_speed = Vector2(get_real_velocity().x, get_real_velocity().z).length()
	# Si frog n'est pas bloquée par un mur
	if real_speed > 0.1:
		size += 0.0
		if anim_player.current_animation != "walk":
			anim_player.play("walk", 0.2) 
	else:
		if anim_player.current_animation != "idle":
			anim_player.play("idle", 0.2)

	move_and_slide()
	
func scale_frog():
	var tween = create_tween()
	var final_scale = Vector3(size, size, size)
	
	tween.tween_property(self, "scale", final_scale, 2)