Refactor literally everything

src/voxel.zig

@@ -0,0 +1,23 @@
+pub const Orientation = enum(u4) {
+    negative_x,
+    positive_x,
+    negative_y,
+    positive_y,
+    negative_z,
+    positive_z,
+};
+
+//  ┌────────────────── x
+//  │   ┌────────────── y
+//  │   │    ┌───────── z
+//  │   │    │   ┌───── orientation
+//  │   │    │   │    ┌ material
+// ┌┴─┐┌┴─┐ ┌┴─┐┌┴─┐ ┌┴──────────────┐
+// 10987654 32109876 54321098 76543210
+pub const Wall = packed struct(u32) {
+    material: u16,
+    orientation: Orientation,
+    z: u4,
+    y: u4,
+    x: u4,
+};