jump stuff so far

@export var total_air_actions := 2
@export var current_air_actions := 1
@export var jump_height : float = 6.0
@export var jump_time_to_peak : float = 0.5
@export var jump_time_to_descent : float = 0.4
#im gonna be real i dont know how this math works i just picked it up off the guide. apparently it's a bunch of projectile calculations via algebra, which while cool is something i gotta pick apart to really learn.
@onready var jump_velocity : float = (2.0 * jump_height) / jump_time_to_peak
@onready var jump_gravity : float = (-2.0 * jump_height) / (jump_time_to_peak * jump_time_to_peak)
@onready var fall_gravity : float = (-2.0 * jump_height) / (jump_time_to_descent * jump_time_to_descent)


func _physics_process(delta: float) -> void:
	#gravity
	velocity.y += get_personal_gravity() * delta
	#jumping
	jump_logic(delta)


func get_personal_gravity() -> float:
	return jump_gravity if velocity.y > 0.0 else fall_gravity

func jump_logic(delta) -> void:
	# falling
	if not is_on_floor():
		velocity += (get_gravity() * 4.0) * delta
	else:
		current_air_actions = total_air_actions
	# jumping
	if Input.is_action_just_pressed("FaceDown") and current_air_actions > 0:
		velocity.y = jump_velocity
		current_air_actions -= 1
	# jump shortening if you release the button before you're at max height
	if Input.is_action_just_released("FaceDown") and velocity.y >= 0:
		velocity.y *= 0.6