extends CharacterBody3D
class_name Enemy

const MOVEMENT_SPEED = 1

@onready var animationtree: AnimationTree = $enemies/AnimationPlayer/AnimationTree
@onready var agent:NavigationAgent3D = $NavigationAgent
@onready var enemyAi: EnemyAI = $BTPlayer
@onready var health: Health = $Health

const SPEED = 5.0
const JUMP_VELOCITY = 4.5

var movementBlend = 0;

func _ready() -> void:
	health.death.connect(died)

func died() -> void:
	queue_free()

func updateMovementBlend(delta: float, to: float) -> void:
	movementBlend = move_toward(movementBlend, to, delta * 2);

func rotateTo(delta: float, targetDirection: Vector3) -> void:
	self.global_basis.z = lerp(self.global_basis.z, targetDirection, delta * 10);

func _physics_process(delta: float) -> void:
	if agent.is_navigation_finished():
		if enemyAi.aggressive:
			rotateTo(delta, (Player.Instance.global_position - self.global_position).normalized())
			
		updateMovementBlend(delta, 0);
		self.animationtree['parameters/Movement/blend_position'] = movementBlend
		return
	
	var current_agent_position: Vector3 = global_position
	var next_path_position: Vector3 = agent.get_next_path_position()

	velocity = current_agent_position.direction_to(next_path_position) * MOVEMENT_SPEED
	move_and_slide()
	
	if enemyAi.aggressive:
		rotateTo(delta, (Player.Instance.global_position - self.global_position).normalized())
	else:
		rotateTo(delta, -velocity.normalized())
	
	updateMovementBlend(delta, velocity.length())
	self.animationtree['parameters/Movement/blend_position'] = movementBlend