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Add removing pieces.

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Danila Fedorin 2018-05-26 00:19:14 -07:00
parent afb384e96e
commit a6260deefd
1 changed files with 53 additions and 2 deletions
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53
src/Go/Game.cr
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@ -56,9 +56,60 @@ module Go
end
end
private def count_neighbors(x, y, color, visited)
if visited.includes?({x, y}) || (x < 0 || x >= @size.value || y < 0 || y >= @size.value)
return 0
else
visited.push({x, y})
case @board[{x, y}]?
when color
return count_neighbors(x - 1, y, color, visited) +
count_neighbors(x + 1, y, color, visited) +
count_neighbors(x, y - 1, color, visited) +
count_neighbors(x, y + 1, color, visited)
when nil
return 1
else
return 0
end
end
return 0
end
private def remove_color(x, y, color)
if !(x < 0 || x >= @size.value || y < 0 || y >= @size.value) && @board[{x, y}]? == color
@board.delete({x, y})
remove_color(x - 1, y, color)
remove_color(x + 1, y, color)
remove_color(x, y - 1, color)
remove_color(x, y + 1, color)
end
end
private def try_remove_branch(x, y, color)
if @board[{x, y}]? == color
neighbor_count = count_neighbors(x, y, color, [] of Tuple(Int8, Int8))
if neighbor_count == 0
remove_color(x, y, color)
end
end
end
def invert(color)
color == Color::Black ? Color::White : Color::Black
end
def update(x, y, color)
if @turn == color
@board[{x, y}] = color
@turn = @turn == Color::Black ? Color::White : Color::Black
new_color = invert(color)
try_remove_branch(x - 1, y, new_color)
try_remove_branch(x + 1, y, new_color)
try_remove_branch(x, y - 1, new_color)
try_remove_branch(x, y + 1, new_color)
try_remove_branch(x, y, color)
@turn = new_color
end
end
private def color_char(color)