main.py

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


class Voxel(Button):
    def __init__(self, position = (0,0,0)):
        super().__init__(
            parent = scene,
            position = position,
            model = "cube",
            origin_y = 0.5,
            texture = 'white_cube',
            color = color.white,
            highlight_color = color.lime
        )
    def input(self,key):
        if self.hovered:
            if key == 'left mouse down':
                voxel = Voxel(position = self.position + mouse.normal)
            if key == 'right mouse down':
                destroy(self)

app = Ursina()

for z in range(20):
    for x in range(20):
        for y in range(2):
            voxel = Voxel(position = (x,y,z)) 

player = FirstPersonController()

app.run()