X-Git-Url: https://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fblock.hpp;fp=src%2Fblock.hpp;h=3af80a854f29cc8945201b6af8d9babfd855c60a;hb=35c09fc00094a3d390732fd533b2bd03413d90c7;hp=4fcee4cac2f0c2a6e7be58d095e6ee16c982870e;hpb=4ef32c5a4a5bdb6da8383f66d8265715eb2ed4f9;p=blank.git

diff --git a/src/block.hpp b/src/block.hpp
index 4fcee4c..3af80a8 100644
--- a/src/block.hpp
+++ b/src/block.hpp
@@ -87,6 +87,43 @@ struct Block {
 		}
 	}
 
+	struct FaceSet {
+
+		explicit FaceSet(unsigned char v = 0)
+		: value(v) { }
+
+		bool IsSet(Face f) const {
+			return value & Mask(f);
+		}
+		void Set(Face f) {
+			value |= Mask(f);
+		}
+		void Unset(Face f) {
+			value |= ~Mask(f);
+		}
+
+		void Clear() {
+			value = 0;
+		}
+		void Fill() {
+			value = Mask(FACE_COUNT) - 1;
+		}
+
+		bool Empty() const {
+			return value == 0;
+		}
+		bool All() const {
+			return value == Mask(FACE_COUNT) - 1;
+		}
+
+		unsigned char Mask(Face f) const {
+			return 1 << f;
+		}
+
+		unsigned char value;
+
+	};
+
 };