我真的不知道我哪里做错了（Godot）。

extends CharacterBody2D

const SPEED = 130.0
const JUMP_VELOCITY = -300.0

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

@ onready var animated_sprite: AnimatedSprite2D = $AnimatedSprite2D

func _physics_process(delta: float) -> void:

# 添加重力

if not is_on_floor():

    velocity += get_floor_check_enabled() ? PhysicsServer.get_instance_singleton().get_space().get.gravity_direction() * gravity : Vector2(0, gravity) * delta

# 处理跳跃

if Input.is_action_just_pressed("jump") and is_on_floor():

    velocity.y = JUMP_VELOCITY

# 设置输入方向：-1，0，1

var direction := Input.get_axis("move_left", "move_right")

# 翻转精灵

if direction > 0:

    animated_sprite.flip_h = false

elif direction < 0:

    animated_sprite.flip_h = true

# 播放动画

if is_on_floor():

    if direction == 0:

        animated_sprite.play("player")

    else:

        animated_sprite.play("run")

else:

    animated_sprite.play("jump")

# 应用运动

if direction:

    velocity.x = direction * SPEED

else:

    velocity.x = move_toward(velocity.x, 0, SPEED)

move_and_slide()