don't add obstructed blocks to meshes

[blank.git] / src / chunk.hpp

diff --git a/src/chunk.hpp b/src/chunk.hpp
index e442e4e289107ee735417c9677ffa6157b42396d..e27cf5ed09d5b3e6a9b018e5bd1b4ca927450a47 100644 (file)
--- a/src/chunk.hpp
+++ b/src/chunk.hpp
@@ -52,6 +52,17 @@ public:
                );
        }
 
+       static constexpr bool IsBorder(int idx) {
+               return
+                       idx < Width() * Height() ||
+                       (idx / Width()) % Height() == 0 ||
+                       (idx / Width()) % Height() == Height() - 1 ||
+                       (idx / (Width() * Height())) == Depth() - 1;
+       }
+
+       // check if block at given index is completely enclosed (and therefore invisible)
+       bool Obstructed(int idx) const;
+
        void Allocate();
        void Invalidate() { dirty = true; }