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【作品展示】

 

【作品介绍】

魔方

 

【作品源代码】

from ursina import *


app = Ursina()

cube_colors = [
    color.pink,  # right
    color.orange,   # left
    color.white,    # top
    color.yellow,   # bottom
    color.azure,    # back
    color.green,    # front
]

# make a model with a separate color on each face
combine_parent = Entity(enabled=False)
for i in range(3):
    dir = Vec3(0, 0, 0)
    dir[i] = 1

    e = Entity(parent=combine_parent, model='plane', origin_y=-.5,
               texture='white_cube', color=cube_colors[i*2])
    e.look_at(dir, 'up')

    e_flipped = Entity(parent=combine_parent, model='plane',
                       origin_y=-.5, texture='white_cube', color=cube_colors[(i*2)+1])
    e_flipped.look_at(-dir, 'up')

combine_parent.combine()


# place 3x3x3 cubes
cubes = []
for x in range(3):
    for y in range(3):
        for z in range(3):
            e = Entity(model=copy(combine_parent.model), position=Vec3(
                x, y, z) - (Vec3(3, 3, 3)/3), texture='white_cube')
            cubes.append(e)


# rotate a side when we click on it
collider = Entity(model='cube', scale=3, collider='box', visible=False)


def collider_input(key):
    if mouse.hovered_entity == collider:
        if key == 'left mouse down':
            rotate_side(mouse.normal, 1)
        elif key == 'right mouse down':
            rotate_side(mouse.normal, -1)


collider.input = collider_input


rotation_helper = Entity()


def rotate_side(normal, direction=1, speed=1):
    if normal == Vec3(1, 0, 0):
        [setattr(e, 'world_parent', rotation_helper) for e in cubes if e.x > 0]
        rotation_helper.animate(
            'rotation_x', 90 * direction, duration=.2*speed, curve=curve.linear)
    elif normal == Vec3(-1, 0, 0):
        [setattr(e, 'world_parent', rotation_helper) for e in cubes if e.x < 0]
        rotation_helper.animate(
            'rotation_x', -90 * direction, duration=.2*speed, curve=curve.linear)

    elif normal == Vec3(0, 1, 0):
        [setattr(e, 'world_parent', rotation_helper) for e in cubes if e.y > 0]
        rotation_helper.animate(
            'rotation_y', 90 * direction, duration=.2*speed, curve=curve.linear)
    elif normal == Vec3(0, -1, 0):
        [setattr(e, 'world_parent', rotation_helper) for e in cubes if e.y < 0]
        rotation_helper.animate(
            'rotation_y', -90 * direction, duration=.2*speed, curve=curve.linear)

    elif normal == Vec3(0, 0, 1):
        [setattr(e, 'world_parent', rotation_helper) for e in cubes if e.z > 0]
        rotation_helper.animate(
            'rotation_z', -90 * direction, duration=.2*speed, curve=curve.linear)
    elif normal == Vec3(0, 0, -1):
        [setattr(e, 'world_parent', rotation_helper) for e in cubes if e.z < 0]
        rotation_helper.animate(
            'rotation_z', 90 * direction, duration=.2*speed, curve=curve.linear)

    invoke(reset_rotation_helper, delay=.22*speed)

    if speed:
        collider.ignore_input = True
        invoke(setattr, collider, 'ignore_input', False, delay=.24*speed)
        invoke(check_for_win, delay=.25*speed)


def reset_rotation_helper():
    [setattr(e, 'world_parent', scene) for e in cubes]
    rotation_helper.rotation = (0, 0, 0)


win_text_entity = Text(y=.35, text='', color=color.green,
                       origin=(0, 0), scale=3)


def check_for_win():
    if {e.world_rotation for e in cubes} == {Vec3(0, 0, 0)}:
        win_text_entity.text = 'SOLVED!'
        win_text_entity.appear()
    else:
        win_text_entity.text = ''


def randomize():
    faces = (Vec3(1, 0, 0), Vec3(0, 1, 0), Vec3(0, 0, 1),
             Vec3(-1, 0, 0), Vec3(0, -1, 0), Vec3(0, 0, -1))
    for i in range(20):
        rotate_side(normal=random.choice(faces),
                    direction=random.choice((-1, 1)), speed=0)


randomize_button = Button(
    text='randomize', color=color.azure, position=(.7, -.4), on_click=randomize)
randomize_button.fit_to_text()

window.color = color._16
EditorCamera()

app.run()

 

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