On Fri, 1 May 2020, Hans Hagen wrote:
On 5/1/2020 6:12 AM, Jairo A. del Rio wrote:
I've adapted the following code to make mazes in LuaLaTeX and ConTeXt:
https://www.rosettacode.org/wiki/Maze_generation#Lua
I defined a modified version to make content visible to TeX and I saved in
a file named maze.lua:
function make_maze_tex(w, h, m)
w = w or 16
h = h or 8
local map = initialize_grid(w*2+1, h*2+1)
function walk(x, y)
map[y][x] = false
local d = { 1, 2, 3, 4 }
shuffle(d)
for i, dirnum in ipairs(d) do
local xx = x + dirs[dirnum].x
local yy = y + dirs[dirnum].y
if map[yy] and map[yy][xx] then
map[avg(y, yy)][avg(x, xx)] = false
walk(xx, yy)
end
end
end
walk(math.random(1, w)*2, math.random(1, h)*2)
...ext/tex/texmf-context/tex/context/base/mkiv/supp-ran.lua:30: C stack
overflow
Why does it happen? I guess it has something to do with math.randomseed,
but I don't know how to avoid this error message.
no, it's just lua running out of stack space so it depends on the binary
(and als the initial random value)
But why is it running out of stack? Isn't the walk function tail recursive, in
which case it should not cause a stack overflow
(https://www.lua.org/pil/6.3.html).
Aditya
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