extends Node
class_name StateWallCling

var machine: MovementStateMachine
var params: MovementParams:
	get: return machine.params

var elapsed: float = 0.0


func enter(_data: Dictionary = {}) -> void:
	elapsed = 0.0
	machine.register_chain_mechanic("wall_cling")


func exit() -> void:
	pass


func update(delta: float) -> void:
	elapsed += delta
	var vel: Vector3 = machine.player.velocity
	vel.x = params.wall_cling_horizontal_speed
	vel.y = params.wall_cling_vertical_speed
	vel.z = params.wall_cling_horizontal_speed
	machine.player.velocity = vel
	machine.player.move_and_slide()

	# Jump off wall
	if machine.input_jump_just_pressed:
		var push_dir := machine.wall_normal * params.wall_run_jump_off_normal
		var vel2 := Vector3(push_dir.x, params.jump_velocity, push_dir.z)
		machine.player.velocity = vel2
		machine.register_chain_mechanic("wall_cling_jump")
		machine.switch_to("air")
		return

	# Re-enter wall run with input
	if machine.input_dir.length() > 0.1:
		machine.switch_to("wall_run")
		return

	# Fall
	if not machine.wall_normal or machine.wall_normal.is_zero_approx():
		machine.switch_to("air")
		return

	if machine.player.is_on_floor():
		machine.on_ground = true
		machine.wall_normal = Vector3.ZERO
		machine.register_chain_mechanic("cling_land")
		machine.switch_to("ground")