Implemented Entity tagged union for highlighted entity (similar to abstract class in some ways)

src/infrastructure/node.zig

@@ -1,7 +1,7 @@
 const std = @import("std");
 const rl = @import("raylib");
 
-const c = @import("../constants.zig");
+const c = @import("../common/constants.zig");
 const e = @import("../errors.zig");
 const Road = @import("road.zig").Road;
 
@@ -39,11 +39,16 @@ pub const Node = struct {
         rl.drawCircleV(self.pos, c.NODE_RADIUS, colour);
     }
 
-    /// Identifies whether the pos (location) is within the snapping radius of the node
-    pub fn posWithinRadius(self: *const Node, pos: rl.Vector2) bool {
+    /// Determines whether the pos (location) is within the snapping radius of the node
+    pub fn withinSnapRadius(self: *const Node, pos: rl.Vector2) bool {
         return rl.checkCollisionPointCircle(pos, self.pos, c.NODE_SNAP_RADIUS);
     }
 
+    /// Determines whether the pos (location) is within the strict (visual representation) radius of the node
+    pub fn withinRadius(self: *const Node, pos: rl.Vector2) bool {
+        return rl.checkCollisionPointCircle(pos, self.pos, c.NODE_RADIUS);
+    }
+
     /// Tries to reference the passed road to self
     ///
     /// Returns an error if the passed road cannot be appended to the list or if said road is already in the list