extends CharacterBody2D

const SPEED = 400.0
const ACCEL = 7.0

const JUMP_VELOCITY = -400.0

const FALL_SPEED = -JUMP_VELOCITY * 2
var falling = false

var gravity = ProjectSettings.get_setting("physics/2d/default_gravity")

var direction = Vector2.ZERO

func _physics_process(delta):
	if not is_on_floor():
		var lowGrav = velocity.y < 0 and Input.is_action_pressed("jump")
		
		velocity.y += gravity * delta / gen.boolToNumb(lowGrav, 1)
	else:
		falling = false

	if Input.is_action_just_pressed("jump") and is_on_floor():
		velocity.y = JUMP_VELOCITY
	
	if Input.is_action_just_pressed("down") and not falling:
		falling = true
		velocity.y = clamp(velocity.y + FALL_SPEED, -INF, FALL_SPEED)

	direction = round(Input.get_axis("left", "right"))
	
	velocity.x = lerp(velocity.x, direction * SPEED, delta * ACCEL)

	move_and_slide()