RosettaCodeData/Task/Generate-random-chess-position/Julia/generate-random-chess-position-1.julia
2023-07-01 13:44:08 -04:00

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module Chess
using Printf
struct King end
struct Pawn end
function placepieces!(grid, ::King)
axis = axes(grid, 1)
while true
r1, c1, r2, c2 = rand(axis, 4)
if r1 != r2 && abs(r1 - r2) > 1 && abs(c1 - c2) > 1
grid[r1, c1] = '♚'
grid[r2, c2] = '♔'
return grid
end
end
end
function placepieces!(grid, ch)
axis = axes(grid, 1)
while true
r, c = rand(axis, 2)
if grid[r, c] == ' '
grid[r, c] = ch
return grid
end
end
end
function placepieces!(grid, ch, ::Pawn)
axis = axes(grid, 1)
while true
r, c = rand(axis, 2)
if grid[r, c] == ' ' && r ∉ extrema(axis)
grid[r, c] = ch
return grid
end
end
end
function randposition!(grid)
placepieces!(grid, King())
foreach("♙♙♙♙♙♙♙♙♙♟♟♟♟♟♟♟♟") do ch
placepieces!(grid, ch, Pawn())
end
foreach("♖♘♗♕♗♘♖♜♞♝♛♝♞♜") do ch
placepieces!(grid, ch)
end
return grid
end
printgrid(grid) = println(join((join(grid[r, :], ' ') for r in 1:size(grid, 1)), '\n'))
end # module Chess