1 files changed, 12 insertions, 0 deletions
diff --git a/src/level.cpp b/src/level.cpp
index efc2038..4fc7d2c 100644
--- a/src/level.cpp
+++ b/src/level.cpp
@@ -6,6 +6,7 @@
 #include <SFML/System/Angle.hpp>
 #include <SFML/System/Vector2.hpp>
 #include <algorithm>
+#include <cstdlib>
 #include <iterator>
 #include <string>
 
@@ -48,6 +49,17 @@ namespace silly::editor {
     for (auto it = layer.tiles.begin(); it != layer.tiles.end(); ++it) {
       if (it->position != position) continue;
 
+      float r = it->rotation;
+
+      if (rotation == 270.0f && r == 0.0f) {
+        r = 360.0f;
+      }
+
+      // wall building
+      if (it->tile->type == TILE_WALL && std::abs(r - rotation) == 90.0f) {
+        break;
+      }
+
       it->rotation = rotation;
       it->tile = tile;
       placed = true;