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refactor: check dirs directly

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Justin Lin
2022-04-10 20:17:35 +08:00
parent dfdfda681d
commit 7c6268c54c
1 changed files with 5 additions and 41 deletions
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46
src/experimental/_impl/_mz_cube_impl.scad
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@@ -127,53 +127,17 @@ function carve(dir, x, y, z, cells, layers, rows, columns) =
dir == 4 ? carve_up(x, y, z, cells) :
/*dir 5*/ carve_down(x, y, z, cells, layers);
// find out visitable dirs from (x, y)
function visitable_dirs(r_dirs, x, y, z, cells, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping) = [
for(dir = r_dirs)
if(
visitable(
next_x(x, dir, columns, x_wrapping),
next_y(y, dir, rows, y_wrapping),
next_z(z, dir, layers, z_wrapping),
cells, layers, rows, columns
)
)
dir
];
// go maze from (x, y, z)
function go_maze(x, y, z, cells, layers, rows, columns, x_wrapping = false, y_wrapping = false, z_wrapping = false, seed) =
let(
r_dirs = rand_dirs(x + y * columns + z * rows * columns, seed),
v_dirs = visitable_dirs(r_dirs, x, y, z, cells, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping),
nxcells0 = set_visited(x, y, z, cells),
leng_v_dirs = len(v_dirs)
nxcells1 = next_cells(x, y, z, r_dirs[0], nxcells0, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping, seed),
nxcells2 = next_cells(x, y, z, r_dirs[1], nxcells1, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping, seed),
nxcells3 = next_cells(x, y, z, r_dirs[2], nxcells2, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping, seed),
nxcells4 = next_cells(x, y, z, r_dirs[3], nxcells3, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping, seed)
)
// have visitable dirs?
leng_v_dirs == 0 ? nxcells0 : // road closed
// try four directions
let(
dir = v_dirs[0],
nx = next_x(x, dir, columns, x_wrapping),
ny = next_y(y, dir, rows, y_wrapping),
nz = next_z(z, dir, layers, z_wrapping),
nxcells1 = go_maze( // try the cell
nx, ny, nz,
carve(dir, x, y, z, nxcells0, layers, rows, columns),
layers, rows, columns,
x_wrapping, y_wrapping, z_wrapping,
seed
)
)
leng_v_dirs == 1 ? nxcells1 :
let(nxcells2 = next_cells(x, y, z, v_dirs[1], nxcells1, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping, seed))
leng_v_dirs == 2 ? nxcells2 :
let(nxcells3 = next_cells(x, y, z, v_dirs[2], nxcells2, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping, seed))
leng_v_dirs == 3 ? nxcells3 :
let(nxcells4 = next_cells(x, y, z, v_dirs[3], nxcells3, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping, seed))
leng_v_dirs == 4 ? nxcells4 :
let(nxcells5 = next_cells(x, y, z, v_dirs[4], nxcells4, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping, seed))
leng_v_dirs == 5 ? nxcells5 : next_cells(x, y, z, v_dirs[5], nxcells5, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping, seed);
next_cells(x, y, z, r_dirs[4], nxcells4, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping, seed);
function next_cells(x, y, z, dir, cells, layers, rows, columns, x_wrapping, y_wrapping, z_wrapping, seed) =
let(