Add bounds check to set_sand()HEADmaster

Previously, painting didn't do it (simulation did) so there were buffer overruns

1 files changed, 1 insertions, 1 deletions

diff --git a/src/ui.cpp b/src/ui.cpp
index 64a8a91..4337a3d 100644
--- a/src/ui.cpp
+++ b/src/ui.cpp
@@ -105,7 +105,7 @@ static void paint_sand(Sandbox& sb, const Tile& palette, Pt pt, BrushType type,
         int x0 = pt.x - size / 2;
         for (int y = y0; y < y0 + size; ++y) {
             for (int x = x0; x < x0 + size; ++x) {
-                sb.set_sand(x, y, palette);
+                sb.ss(x, y, palette);
             }
         }
     } break;