你的代码应该可以工作，但如果不能，你可能没有正确加载纹理。例如，如果它位于一个名为“textures”的文件中，你的代码应该是这样的：

sans_texture = load_texture('textures/sans.png')
sand = Entity(model = 'quad', texture = sans_texture)

但如果还是不行，你可以试试这个：

sand = Entity(model = 'quad', texture = 'textures/sans.png')

我希望这是有帮助的。

纹理可能未正确加载，要正确加载，可以尝试复制粘贴图像链接，例如：

sand = Entity(model = 'quad', texture = 'C:/Users/guest/Pictures/sans.png')

就这么办吧：

from ursina import * # import everything we need with one line.
#an entity is basically anything you can see or hear/interact on a screen

def update():#updtes every frame
    if held_keys['a']:
        test_square.x -= 1 * time.dt #so the .x is the axis (you can use y too and -= minuses every frame), multiplying it by time.delta means it will move in accordance with the framerate
    # time.dt is the completion time between the last frame
    if held_keys['d']:
        test_square.x += 1 * time.dt
app = Ursina()

test_square = Entity(model = 'quad', color = color.red, scale = (1,4), position = (3,1))#x then y for scale and pos

sand = Entity(model = 'quad', texture = 'sans.png')

app.run()

假设我有一个名为Example.png的纹理，我会包含这样的纹理
纹理=“示例”

尝试将其放在紧靠py文件的assets文件夹中

Sand=Entity(model="quad",texture="assets/sans.png")

你可以这样做-

Sand = Entity(
 model = "quad",
 texture = ("folder_name/sans.png")
)

如果纹理不在文件夹里-

Sand = Entity(
     model = "quad",
     texture = ("sans.png")
    )

还要确保png/texture位于您正在处理的项目文件夹中！