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3d游戏代码，有大佬帮我看一下出了什么问题，用的是ursia库和ursina的第一人称工具，地面本来应该是方块的，实际出来是方片。下面是代码：

from ursina import *
from ursina.prefabs.first_person_controller import FirstPersonController

 

class Block(Button):
def __init__(self,position=(0,0,0)):
super().__init__(
parent = scene,
position = position,
modle = 'assets/block',
origin_y = 0.5,
textture ='cube',
color = color.color(0,0,random.uniform(0.5,1)),
highlight_color = color.green)
def input(self,key):
if key=='left mouse down':
destroy(self)
if key=='right mouse down':
block=Block(position=self.position+mouse.normal)


app=Ursina()

for z in range(16):
for x in range(16):
block=Block(position=(x,0,z))

player=FirstPersonController()

app.run()#运行