extends CharacterBody3D

## NS-14: click-to-move using horizontal steering + move_and_slide (not NavigationAgent3D).
## Obstacles are handled by physics sliding, not pathfinding — see client README.

const MOVE_SPEED: float = 5.0
const ARRIVE_EPS: float = 0.35

var _goal: Vector3


func _ready() -> void:
	_goal = global_position



func set_move_goal(world_pos: Vector3) -> void:
	_goal = world_pos
	_goal.y = global_position.y


## NS-16: snap to authoritative server position; clears velocity so `move_and_slide` does not fight the sync.
func snap_to_server(world_pos: Vector3) -> void:
	global_position = world_pos
	velocity = Vector3.ZERO
	_goal = world_pos


func _physics_process(_delta: float) -> void:
	var to_goal: Vector3 = _goal - global_position
	to_goal.y = 0.0
	if to_goal.length() <= ARRIVE_EPS:
		velocity = Vector3.ZERO
	else:
		velocity = to_goal.normalized() * MOVE_SPEED
		velocity.y = 0.0
	move_and_slide()