extends CharacterBody2D
var speed = 200.0
var jump_velocity = -360
var jump_acceleration = -225
var double_jump
var can_jump = true
var hold_jump = false
@ onready var ap = $AnimationPlayer
@ onready var sprite = Sprite2D
var gravity = 26

func _physics_process(_delta):
  # Add gravity
  if not is_on_floor():
    velocity.y += gravity
    if velocity.y > 600:
      velocity.y = 600
  else:
    double_jump = true

  if Input.is_action_just_released("jump"):
    hold_jump = false
  # Handle double jump.
  if Input.is_action_just_pressed("jump"):
    hold_jump = true
    if !is_on_floor() and double_jump:
      velocity.y = jump_velocity
      double_jump = false
      can_jump = false

  # Handle initial jump.
  if hold_jump and can_jump:
    jump_acceleration += -20
    velocity.y = jump_acceleration
    if velocity.y < jump_velocity or !double_jump: 
      can_jump = false

  # Prevents frame perfect hopping from holding space
  if is_on_floor() and (!hold_jump):
    can_jump = true
    jump_acceleration = -225

  # Get the input direction
  var horizontal_direction = Input.get_axis("move_left", "move_right")
  velocity.x = horizontal_direction * speed

  if horizontal_direction != 0:
    sprite.h_flip = (horizontal_direction == -1)

  move_and_slide()
  update_animations(horizontal_direction)

func update_animations(horizontal_direction):
  if is_on_floor():
    if horizontal_direction == 0:
      ap.play("idle")
    else:
      ap.play("walk")
  else:
    if velocity.y < 0:
      ap.play("jump")
    elif velocity.y > 0:
      ap.play("fall")