敌人都去戈多的一个地方

Question

我一直在尝试制作一款类似大逃杀的游戏，其中敌人都以其他敌人或靠近他们的玩家为目标，如果没有，他们会去随机位置。然而，他们都去相对相同的地方，我不知道为什么。这是我的代码：

extends KinematicBody2D

onready var player = get_node("../Square_Player")
var Bullet = preload("res://Bullet.tscn")

var time : int = 0

var targets : Array = []
var target : Vector2
var posible_targets : Array = []
var num : int = 0

func _ready():
    for node in get_tree().get_nodes_in_group("targets"):
        if node != self:
            targets.append(node)

func spawn_bullet(target):
    var bullet = Bullet.instance()
    bullet.position = position
    bullet.rotation = rotation
    bullet.target = target
    bullet.p_name = self.name
    get_parent().add_child(bullet)

func _process(delta):

    # using if statement check for error
    if target == null:
        targets.shuffle()
        for t in targets:
            if (t.position - position).length() < 1000:
                posible_targets.append(t)
                num = rand_range(0, posible_targets.size())
                target = posible_targets[num].position
                #target = t.position
            else:
                target = Vector2(rand_range(0, 1000), rand_range(0, 1000))
    else:
        pass

    if target == Vector2(0, 0):
        target = Vector2(rand_range(0, 1000), rand_range(0, 1000))

    else:
        pass

    print(target)
    
    var direction = target - position
    var distance = direction.length()
    direction = direction.normalized()
    position += direction * 200 * delta

    # rotate the enemy to face the player
    var angle = direction.angle_to(Vector2(1, 0))
    rotation = -angle + 89.525

    time += 1

    # if the enemy is close enough to the player, kill the player
    if distance < 1000 and time > 75:
        spawn_bullet(target)
        time = 0

func die():
    # make it invisible
    set_process(false)
    set_visible(false)
    # remove it from the targets group
    if "targets" in get_groups():
        remove_from_group("targets")
    queue_free()

我试着改变生成的随机数，我玩过不同数量的敌人，看看物理是否被破坏了。