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-rw-r--r--src/maze.tpp30
1 files changed, 23 insertions, 7 deletions
diff --git a/src/maze.tpp b/src/maze.tpp
index 19390cc..2edb60d 100644
--- a/src/maze.tpp
+++ b/src/maze.tpp
@@ -22,7 +22,9 @@ std::vector<std::shared_ptr<Vector2>> get_neighbours(Matrix<Element> *matrix,
auto pos_down = (*pos - Vector2(0U, 2U)).copy();
if (matrix->get(*pos_down) != space_element)
+ {
neighbours.push_back(pos_down);
+ }
}
if (pos->y() != matrix->rows() - 2U)
@@ -30,7 +32,9 @@ std::vector<std::shared_ptr<Vector2>> get_neighbours(Matrix<Element> *matrix,
auto pos_up = (*pos + Vector2(0U, 2U)).copy();
if (matrix->get(*pos_up) != space_element)
+ {
neighbours.push_back(pos_up);
+ }
}
if (pos->x() != 1U)
@@ -38,7 +42,9 @@ std::vector<std::shared_ptr<Vector2>> get_neighbours(Matrix<Element> *matrix,
auto pos_left = (*pos - Vector2(2U, 0U)).copy();
if (matrix->get(*pos_left) != space_element)
+ {
neighbours.push_back(pos_left);
+ }
}
if (pos->x() != matrix->columns() - 2U)
@@ -46,7 +52,9 @@ std::vector<std::shared_ptr<Vector2>> get_neighbours(Matrix<Element> *matrix,
auto pos_right = (*pos + Vector2(2U, 0U)).copy();
if (matrix->get(*pos_right) != space_element)
+ {
neighbours.push_back(pos_right);
+ }
}
return neighbours;
@@ -75,14 +83,19 @@ void pos_to_between(std::shared_ptr<Vector2> between_pos, unsigned int coord,
unsigned int away_coord, Vector2 diff)
{
if (away_coord > coord)
+ {
*between_pos += diff;
+ }
else
+ {
*between_pos -= diff;
+ }
}
template <typename Element>
void matrix_to_maze(Matrix<Element> *matrix, std::shared_ptr<Vector2> start_pos,
- Element space_element, std::mt19937 random_gen)
+ Element space_element,
+ std::shared_ptr<RandomNumberGenerator> random_gen)
{
Stack<std::shared_ptr<Vector2>> path_stack(get_maze_size(matrix));
@@ -95,13 +108,14 @@ void matrix_to_maze(Matrix<Element> *matrix, std::shared_ptr<Vector2> start_pos,
matrix->set(*pos, space_element);
- std::vector<std::shared_ptr<Vector2>> neighbours =
- get_neighbours(matrix, pos, space_element);
+ auto neighbours = get_neighbours(matrix, pos, space_element);
if (neighbours.empty())
{
if (visited_pos_cnt == get_maze_size(matrix) - 1U)
+ {
break;
+ }
// Go back a step
path_stack.pop();
@@ -110,18 +124,20 @@ void matrix_to_maze(Matrix<Element> *matrix, std::shared_ptr<Vector2> start_pos,
visited_pos_cnt++;
- auto random_dist = std::uniform_int_distribution<unsigned int>(
- 0U, static_cast<unsigned int>(neighbours.size()) - 1U);
-
- auto next_pos = neighbours[random_dist(random_gen)];
+ auto next_pos = neighbours[random_gen->in_range(
+ 0U, static_cast<unsigned int>(neighbours.size()) - 1U)];
auto between_pos = pos->copy();
if (next_pos->y() != pos->y())
+ {
pos_to_between(between_pos, pos->y(), next_pos->y(), Vector2(0U, 1U));
+ }
if (next_pos->x() != pos->x())
+ {
pos_to_between(between_pos, pos->x(), next_pos->x(), Vector2(1U, 0U));
+ }
matrix->set(*between_pos, space_element);