手把手教你用Python编一个《我的世界》 2.材质及第一人称

本次，我们将实现这样一个效果：

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首先，导入ursina模块

from ursina import *

创建app

app=Ursina()

定义Block类，继承自Button

class Block(Button):
    def __init__(self,position=(0,0,0),texture=grass_texture):
        super().__init__(
            parent=scene,
            position=position,
            model="cube",
            highlight_color=color.lime,
            color=color.white,
            texture=texture,
            origin_y=0.5
        )

然后，我们需要一个天空

定义Sky类

class Sky(Entity):
    def __init__(self):
        super().__init__(
            parent=scene,
            model="sphere",
            scale=1500,
            texture=sky_texture,
            double_sided=True,
            position=(0,0,0)
        )

因为我们所有的方块包括天空都需要图片材质，所以我们在程序开头写以下代码：

grass_texture=load_texture("texture/grass.jpg")
dirt_texture=load_texture("texture/dirt.jpg")
sky_texture=load_texture("texture/sky.jpg")
cobblestone_texture=load_texture("texture/cobblestone.png")
plank_texture=load_texture("texture/plank.jpg")
stone_texture=load_texture("texture/stone.jpg")
bedrock_texture=load_texture("texture/bedrock.jpg")
brick_texture=load_texture("texture/brick.png")
endstone_texture=load_texture("texture/endstone.jpg")
lapis_texture=load_texture("texture/lapis.jpg")
leaf_texture=load_texture("texture/leaf.jpg")
lucky_block_texture=load_texture("texture/luckyblock.png")

然后咱们先创建一个超平坦地形，厚度就只有1层吧，因为方块多了很容易变卡掉帧

那我们就把底面设置成基岩吧

height=1
for y in range(0,height):
    for z in range(-15,16):
        for x in range(-15,16):
            print(f"Position:({x},{y},{z})")
            texture=bedrock_texture
            Block(position=(x,y,z),texture=texture)

这时候，我们需要一个第一人称控制器，在程序前导入

from ursina.prefabs.first_person_controller import FirstPersonController

然后在程序后面写上

player=FirstPersonController()

顺便创建个天空

sky=Sky()

最后运行app

app.run()

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我们还要继续设置放置和破坏方块的功能，在Block中添加两个函数，用于设置选取方块类型还有放置和破坏方块的效果

    def input(self,key):
        if self.hovered:
            if key=="right mouse down":
                Block(position=self.position+mouse.normal,texture=select_texture)
            if key=="left mouse down":
                if self.texture!=bedrock_texture:
                    destroy(self)

    def update(self):
        global select_texture
        if held_keys["1"]: select_texture=grass_texture
        if held_keys["2"]: select_texture=dirt_texture
        if held_keys["3"]: select_texture=cobblestone_texture
        if held_keys["4"]: select_texture=plank_texture
        if held_keys["5"]: select_texture=stone_texture
        if held_keys["6"]: select_texture=brick_texture
        if held_keys["7"]: select_texture=endstone_texture
        if held_keys["8"]: select_texture=lapis_texture
        if held_keys["9"]: select_texture=leaf_texture
        if held_keys["0"]: select_texture=lucky_block_texture

在导入材质后添加默认选取：

select_texture=grass_texture

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最后运行效果如下：

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最终代码：

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

app=Ursina()

grass_texture=load_texture("texture/grass.jpg")
dirt_texture=load_texture("texture/dirt.jpg")
sky_texture=load_texture("texture/sky.jpg")
cobblestone_texture=load_texture("texture/cobblestone.png")
plank_texture=load_texture("texture/plank.jpg")
stone_texture=load_texture("texture/stone.jpg")
bedrock_texture=load_texture("texture/bedrock.jpg")
brick_texture=load_texture("texture/brick.png")
endstone_texture=load_texture("texture/endstone.jpg")
lapis_texture=load_texture("texture/lapis.jpg")
leaf_texture=load_texture("texture/leaf.jpg")
lucky_block_texture=load_texture("texture/luckyblock.png")
select_texture=grass_texture

class Sky(Entity):
    def __init__(self):
        super().__init__(
            parent=scene,
            model="sphere",
            scale=1500,
            texture=sky_texture,
            double_sided=True,
            position=(0,0,0)
        )

class Block(Button):
    def __init__(self,position=(0,0,0),texture=grass_texture):
        super().__init__(
            parent=scene,
            position=position,
            model="cube",
            highlight_color=color.lime,
            color=color.white,
            texture=texture,
            origin_y=0.5
        )

    def input(self,key):
        if self.hovered:
            if key=="right mouse down":
                Block(position=self.position+mouse.normal,texture=select_texture)
            if key=="left mouse down":
                if self.texture!=bedrock_texture:
                    destroy(self)

    def update(self):
        global select_texture
        if held_keys["1"]: select_texture=grass_texture
        if held_keys["2"]: select_texture=dirt_texture
        if held_keys["3"]: select_texture=cobblestone_texture
        if held_keys["4"]: select_texture=plank_texture
        if held_keys["5"]: select_texture=stone_texture
        if held_keys["6"]: select_texture=brick_texture
        if held_keys["7"]: select_texture=endstone_texture
        if held_keys["8"]: select_texture=lapis_texture
        if held_keys["9"]: select_texture=leaf_texture
        if held_keys["0"]: select_texture=lucky_block_texture

height=1
for y in range(0,height):
    for z in range(-15,16):
        for x in range(-15,16):
            print(f"Position:({x},{y},{z})")
                texture=bedrock_texture
            Block(position=(x,y,z),texture=texture)

player=FirstPersonController()
sky=Sky()

app.run()

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下节我们将继续优化游戏，大家可以免费订阅我的专栏哦！

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附资源（免费下载）：

制作简易版《我的世界》所需要的材质图片-Python文档类资源-CSDN下载制作简易版《我的世界》所需要的材质图片更多下载资源、学习资料请访问CSDN下载频道.https://download.csdn.net/download/leleprogrammer/85382058