Question

我正在尝试用python构建基于文本的开放世界游戏

world = [["=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","=","="],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
     [" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "],
    ]

for i in world:
    for j in i:
        print(j, end="")
    print("")

此代码成功打印了世界地图，尽管速度有些慢。有没有办法提高性能？最终，我想要一张巨大的地图，玩家可以在其中移动，与敌人，NPC等互动。有什么方法可以使渲染速度更快，使其优于.1 FPS？

我正在使用Python 3.7 IDLE。

谢谢！

Answer 1

使用.join()快速将列表串在一起。

print('\n'.join([''.join(row) for row in world]))

在IDLE上，print有很多开销。您最好在打印字符串之前先对其进行编译，以获得最佳性能。

Answer 2

String在python中已经是只读的迭代器。所以你可以做类似的事情

world = [
    "  X  ",
    " XXX ",
    " X   ",
    ]
for row in world:
    print(row)

但是您实际上应该尽量减少对print的调用，这是慢。也许您只能使用一个三重引号的字符串？

world = """\
  X  
 XXX 
  X   """

print(world)

使用这样的字符串，您可以通过计算(i,j)元素之前的字符数来访问它。每行有board_width + 1个字符（不要忘记计算换行符），并且在元素j之前有(i,j)行。另外，在0处建立索引，与i在同一行上有(i,j)个元素，但在(i,j)的左侧，因此(i,j)元素为{ {1}}。

如果您希望保留双精度数组，因为它是 mutable ，请考虑在打印之前将其合并为单个字符串。为此，请使用world[(row_width + 1) * j + i]在一次调用中合并每一行。

map

edit1 ：您可以像TrebuchetMS一样理解列表，但是实际上它是在python3中构建列表的，map将创建一个迭代器，在调用{之前不需要存储所有已转换的行{1}}，而不是即时计算转换后的行列表，而无需将其存储在列表中。

edit2 ：要部分渲染世界，只需在构建字符串之前使用列表的范围选择即可。例如，world [j1：j2]仅包含从索引displayedWorld = "\n".join(map("".join, world))（包括）到索引"\n".map（不包括）的世界行。因此，如果要显示从j1到尺寸为j2的矩形，请执行以下操作：

(i,j)

这使用了一个新的成语lambda，它只是一个未命名的函数。 λ(w,h)等效于方法displayedWorld = "\n".join(map(lambda row: "".join(row[i:i+w]), world[j:j+h]))。因此，lambda row: "".join(row)仅合并行中从"".join到lambda row: "".join(row[i:i+w])的情况。请注意，我们也仅选择了世界上从i到i+w的行。

Answer 3

如果您使用的是Linux / osx，则可以签出curses。使用该库，您可以单独绘制像素，而不必一直重新绘制像素。

涉及到巨大的地图：仅绘制地图上当前可见的部分。

尝试更快地在python中渲染ASCII艺术作品

3 个答案: