xiandie/scene/little_game/弹珠游戏/ball.gd

@tool

extends RigidBody2D

signal hit_ball
signal hit_boundary

@export_enum("1", "2", "3", "4", "5", "6", "7") var id := "1":
	set(value):
		id = value
		if Engine.is_editor_hint() and is_node_ready():
			_set_up_texture()
@export var is_shooter := false:
	set(value):
		is_shooter = value
@export var enable := true:
	set(value):
		enable = value
		if is_node_ready():
			$CollisionShape2D.set_deferred("disabled", !value)

@onready var collision_shape = $CollisionShape2D as CollisionShape2D
@onready var sprite2d = $Sprite2D as Sprite2D
@onready var shadow = $Shadow as Sprite2D

const texture_dict = {
	"1": preload("res://asset/art/little_game/弹珠/球1.png"),
	"2": preload("res://asset/art/little_game/弹珠/球2.png"),
	"3": preload("res://asset/art/little_game/弹珠/球3.png"),
	"4": preload("res://asset/art/little_game/弹珠/球4.png"),
	"5": preload("res://asset/art/little_game/弹珠/球5.png"),
	"6": preload("res://asset/art/little_game/弹珠/球6.png"),
	"7": preload("res://asset/art/little_game/弹珠/球7.png"),
}


func _ready() -> void:
	if is_shooter:
		linear_damp = 0
	contact_monitor = true
	max_contacts_reported = 1
	_set_up_texture()
	body_entered.connect(_on_body_entered)


func dispatch(origin_pos: Vector2):
	visible = true
	modulate.a = 0.3
	var target_pos = position
	position = origin_pos
	collision_shape.disabled = true
	var tween = create_tween()
	tween.tween_property(self, "modulate:a", 1.0, 0.4)
	tween.parallel().tween_property(self, "rotation", 4.0, 0.8).set_ease(Tween.EASE_IN_OUT)
	tween.parallel().tween_property(self, "position", target_pos, 0.8).set_ease(Tween.EASE_IN_OUT)
	tween.tween_callback(func(): collision_shape.disabled = false)


func hide_away():
	visible = false
	collision_shape.disabled = true


func rand_id():
	# 随机 id
	var rand = randi() % 3 + 1
	id = str(rand)
	_set_up_texture()


func _set_up_texture():
	sprite2d.texture = texture_dict[id]


var recycling = false


func _on_body_entered(node: Node):
	if GlobalConfig.DEBUG:
		print("[debug] hit node", node.get_path())
	if recycling or not is_shooter:
		return
	recycling = true
	var tween = create_tween()
	if node is StaticBody2D:
		tween.tween_property(sprite2d, "modulate:a", 0.0, 1.0)
		tween.tween_callback(hit_boundary.emit)
		tween.tween_callback(queue_free)
		return
	tween.tween_property(sprite2d, "modulate:a", 0.0, 1.5)
	tween.parallel().tween_property(node.sprite2d, "modulate:a", 0.0, 1.5)
	tween.tween_callback(hit_ball.emit)
	tween.tween_callback(node.queue_free)
	tween.tween_callback(queue_free)


func _process(_delta: float) -> void:
	if Engine.is_editor_hint():
		return
	# 根据 y 坐标缩放
	var ball_scale = 1.0 + (global_position.y / 400.0)
	sprite2d.scale = Vector2(ball_scale, ball_scale) * 0.4
	shadow.scale = Vector2(ball_scale, ball_scale)
	shadow.rotation = -rotation
	shadow.position = Vector2(0, 6.0 * ball_scale).rotated(-rotation)
	collision_shape.scale = Vector2(ball_scale, ball_scale)