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Now using the box iterator everywhere I can before writing a flood iterator.

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Zed A. Shaw 2024-12-16 01:17:11 -05:00
parent 547be19e68
commit 043c0d91df
2 changed files with 7 additions and 26 deletions
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25
pathing.cpp
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@ -5,22 +5,11 @@
using std::vector;
inline void add_neighbors(PointList &neighbors, Matrix &closed, size_t y, size_t x, size_t w, size_t h) {
dbc::check(h == closed.size(), "given height and closed height don't match");
dbc::check(w == closed[0].size(), "given width and closed width don't match");
vector<int> rows{int(y) - 1, int(y), int(y) + 1};
vector<int> cols{int(x) - 1, int(x), int(x) + 1};
for(int row : rows) {
for(int col : cols) {
if(row < 0 || row >= int(h)) continue;
if(col < 0 || col >= int(w)) continue;
if(closed[row][col] == 0) {
closed[row][col] = 1;
neighbors.push_back({.x=size_t(col), .y=size_t(row)});
}
inline void add_neighbors(PointList &neighbors, Matrix &closed, size_t y, size_t x) {
for(matrix::in_box it{closed, x, y, 1}; it.next();) {
if(closed[it.y][it.x] == 0) {
closed[it.y][it.x] = 1;
neighbors.push_back({.x=it.x, .y=it.y});
}
}
}
@ -56,7 +45,7 @@ void Pathing::compute_paths(Matrix &walls) {
// Second pass: Add border to open
for(auto sp : starting_pixels) {
add_neighbors(open_pixels, closed, sp.y, sp.x, $width, $height);
add_neighbors(open_pixels, closed, sp.y, sp.x);
}
// Third pass: Iterate filling in the open list
@ -65,7 +54,7 @@ void Pathing::compute_paths(Matrix &walls) {
PointList next_open;
for(auto sp : open_pixels) {
$paths[sp.y][sp.x] = counter;
add_neighbors(next_open, closed, sp.y, sp.x, $width, $height);
add_neighbors(next_open, closed, sp.y, sp.x);
}
open_pixels = next_open;
}