Platformer Feel (Character movement skill)

@export var coyote_time: float = 0.1
var _coyote_timer: float = 0.0

func _physics_process(delta: float) -> void:
	if not is_on_floor():
		velocity.y += gravity * delta
		_coyote_timer -= delta
	else:
		_coyote_timer = coyote_time
	# jump check uses _coyote_timer > 0.0 instead of is_on_floor()

@export var jump_buffer: float = 0.1
var _buffer_timer: float = 0.0

func _physics_process(delta: float) -> void:
	if Input.is_action_just_pressed("jump"):
		_buffer_timer = jump_buffer
	_buffer_timer -= delta
	if _buffer_timer > 0.0 and _coyote_timer > 0.0:
		velocity.y = jump_velocity
		_buffer_timer = 0.0
		_coyote_timer = 0.0

	if Input.is_action_just_released("jump") and velocity.y < 0.0:
		velocity.y *= 0.4

@export var fall_multiplier: float = 1.6

func _physics_process(delta: float) -> void:
	var g := gravity * (fall_multiplier if velocity.y > 0.0 else 1.0)
	if not is_on_floor():
		velocity.y += g * delta