Adjusted variables and comments

src/common/constants.zig

@@ -22,7 +22,4 @@ pub const ROAD_SIZE = 20;
 /// Regular road colour
 pub const ROAD_COLOUR = clr.black;
 /// Colour of the road that is highlighted
-pub const ROAD_HIGHLIGHTED_COLOUR = clr.green;
-
-pub const TEXT_SIZE = 50;
-pub const TEXT_COLOUR = clr.black;
+pub const ROAD_HIGHLIGHTED_COLOUR = clr.green;

src/common/structures.zig

@@ -1,6 +1,7 @@
 const Road = @import("../infrastructure/road.zig").Road;
 const Node = @import("../infrastructure/node.zig").Node;
 
+/// Can point to either entity type (node, road, etc.)
 pub const Entity = union(enum) {
     node: *Node,
     road: *Road,