无法获取ursina中玩家的当前位置

Question

我正在用 ursina、python 构建游戏，但无法获取玩家的当前位置。

这是我的代码：

from ursina import *
from ursina.prefabs.first_person_controller \
    import FirstPersonController
from os import listdir

textures = listdir("assets/texture/")
app = Ursina()
dict_textures = {
    index + 1 : {
        "name":    file.replace(".png", "_texture"),
        "texture": load_texture(file)
    }
    for index, file in enumerate(textures)
}
sky_texture = load_texture("/assets/Sky.png")

def input(key):
    if key == "escape":
        exit()
    elif key == 'r':
        position = player.position
        print(position)

class Sky(Entity):
    def __init__(self):
        super().__init__(
            parent=scene,
            model="sphere",
            texture=sky_texture,
            scale = 5000,
            double_sided = True)

class Grass_Block(Button):
    def __init__(
            self,
            position,
            texture = load_texture(
                "/assets/texture/Grass_Block.png"
            )
        ):
        super().__init__(
            parent=scene,
            position=position,
            model="cube",
            origin_y=0.5,
            texture=texture,
            color=color.white,
            colision = "mesh",
            double_sided = True)

def create_map():
    with open("maze.txt", "r") as file:
        map = file.read()
    map = map.split("\n")
    map = [list(line) for line in map]

    for z in range(len(map)):
        for x in range(len(map[0])):
            _ = Grass_Block(position=(z, 0, x))
            if map[z][x] == '1':
                for i in range(5):
                    _ = Grass_Block(
                        position=(z, i+1, x),
                        texture="/assets/texture/Mushroom_dirt.png"
                    )

class Player(Entity):
    def __init__(self):
        super().__init__()
        self.controller = FirstPersonController(
            mouse_sensitivity = Vec2(100, 100),
            player = self
        )

if __name__ == "__main__":
    create_map()
    player = Player()
    sky = Sky()
    app.run()

每次输入 R 键都会打印 Vec3(0,0,0) 但不打印当前位置。创建用于建造墙壁、迷宫以及玩家应该行走的地板的地图。因为玩家被设置为 (0,0,0) 位置，所以他会在墙内生成。我实际上可以通过使用空格键跳跃来退出墙壁并坐在上面，但我也想设置初始位置。似乎玩家的位置属性没有更新并且无法更改。

我做错了什么？

Answer 1

我删除了 Player 类并使用它：

if __name__ == "__main__":
    player = FirstPersonController(
        speed=10,
        jump_height=1
    )
    player.position = (1,0,1)
    create_map()
    sky = Sky()
    app.run()