Dog-Lynx-And-HCN/scripts/Statemachine/EntityBase.gd

extends CharacterBody2D
class_name EntityBase # 这是个抽象类

@export var maxHealth: float = 100
@export var movementSpeed: float = 1
@export var isBoss: bool = false
@export var weapons: Array[Node2D] = []

@onready var animatree: AnimationTree = $"%animatree"
@onready var texture: AnimatedSprite2D = $"%texture"
@onready var hurtbox: Area2D = $"%hurtbox"

var health: float = 0

var lastDirection: int = 1

func _ready():
	health = maxHealth
func _process(_delta):
	health = clamp(health, 0, maxHealth)
	animatree.set("parameters/blend_position", lerpf(animatree.get("parameters/blend_position"), lastDirection, 0.1))
func _physics_process(_delta: float) -> void:
	velocity = Vector2.ZERO
	ai()
	move_and_slide()

# 通用方法
func move(direction: Vector2):
	velocity = direction.normalized() * movementSpeed * 150 * abs(animatree.get("parameters/blend_position"))
	var currentDirection = sign(direction.x)
	if currentDirection != 0:
		lastDirection = currentDirection
func takeDamage(bullet: BulletBase):
	health -= bullet.damage
	if health <= 0:
		die()

# 关于分组
func isPlayer():
	return is_in_group("players")

# 抽象方法
func ai():
	pass
func attack(_type: int):
	pass
func die():
	queue_free()

static func generate(
	entity: PackedScene,
	spawnPosition: Vector2,
	spawnRotation: float,
	addtoWorld: bool = true
):
	var instance = entity.instance()
	instance.position = spawnPosition
	instance.rotation = spawnRotation
	if addtoWorld:
		WorldTool.rootNode.add_child(instance)
	return instance