X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fworld%2FBlock.hpp;h=2eac5ff6ca13b688ad1892ec879181e87ce26bef;hb=57e4a98dcdf7ed1c38ef47bd4152d9965a5e8960;hp=274e3d3c3120369eb8915c752db357c8b8b80b23;hpb=549646ac3e5bede5e77031f773649edf8de83608;p=blank.git

diff --git a/src/world/Block.hpp b/src/world/Block.hpp
index 274e3d3..2eac5ff 100644
--- a/src/world/Block.hpp
+++ b/src/world/Block.hpp
@@ -1,8 +1,9 @@
 #ifndef BLANK_WORLD_BLOCK_HPP_
 #define BLANK_WORLD_BLOCK_HPP_
 
+#include "../graphics/glm.hpp"
+
 #include <iosfwd>
-#include <glm/glm.hpp>
 
 
 namespace blank {
@@ -11,7 +12,6 @@ namespace blank {
 struct Block {
 
 	using Type = unsigned short;
-	using Pos = glm::vec3;
 
 	enum Face {
 		FACE_UP,
@@ -66,12 +66,28 @@ struct Block {
 		}
 	}
 
+	/// 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];
 	}
 
 	static Face NormalFace(const glm::vec3 &norm) noexcept {
-		const glm::vec3 anorm(abs(norm));
+		const glm::vec3 anorm(glm::abs(norm));
 		if (anorm.x > anorm.y) {
 			if (anorm.x > anorm.z) {
 				return norm.x > 0.0f ? FACE_RIGHT : FACE_LEFT;
@@ -131,7 +147,13 @@ private:
 
 };
 
-bool operator ==(const Block &, const Block &);
+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 &);