X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fworld%2FBlock.hpp;h=ea3de59b206e3ad7b90b9033db7506037bd24692;hb=b94a7dc7daad9ae9be90a39d723e332dae375325;hp=9fd545b3813ce5c24e244e42bbb593b75606e690;hpb=d71d636af8b6f493abe537088464d1dc6b816c04;p=blank.git

diff --git a/src/world/Block.hpp b/src/world/Block.hpp
index 9fd545b..ea3de59 100644
--- a/src/world/Block.hpp
+++ b/src/world/Block.hpp
@@ -1,6 +1,7 @@
 #ifndef BLANK_WORLD_BLOCK_HPP_
 #define BLANK_WORLD_BLOCK_HPP_
 
+#include <iosfwd>
 #include <glm/glm.hpp>
 
 
@@ -10,7 +11,6 @@ namespace blank {
 struct Block {
 
 	using Type = unsigned short;
-	using Pos = glm::vec3;
 
 	enum Face {
 		FACE_UP,
@@ -65,7 +65,23 @@ struct Block {
 		}
 	}
 
-	static glm::tvec3<int> FaceNormal(Face face) noexcept {
+	/// returns 1 for pro-axis, -1 for retro-axis, 0 for invalid faces
+	static int Direction(Face f) noexcept {
+		switch (f) {
+			case FACE_RIGHT:
+			case FACE_UP:
+			case FACE_FRONT:
+				return 1;
+			case FACE_LEFT:
+			case FACE_DOWN:
+			case FACE_BACK:
+				return -1;
+			default:
+				return 0;
+		}
+	}
+
+	static glm::ivec3 FaceNormal(Face face) noexcept {
 		return face2normal[face];
 	}
 
@@ -124,12 +140,24 @@ struct Block {
 	};
 
 private:
-	static const glm::tvec3<int> face2normal[6];
+	static const glm::ivec3 face2normal[6];
 	static const glm::mat4 orient2transform[ORIENT_COUNT];
 	static const Face orient2face[ORIENT_COUNT][FACE_COUNT];
 
 };
 
+inline bool operator ==(const Block &a, const Block &b) {
+	return a.type == b.type && a.orient == b.orient;
+}
+
+inline bool operator !=(const Block &a, const Block &b) {
+	return !(a == b);
+}
+
+std::ostream &operator <<(std::ostream &, const Block &);
+std::ostream &operator <<(std::ostream &, const Block::Face &);
+std::ostream &operator <<(std::ostream &, const Block::Turn &);
+
 }
 
 #endif