Added comments and slightly refactored code for deletion of temp node

src/simulator.zig

@@ -219,6 +219,7 @@ pub const Simulator = struct {
         self.highlighted_entity = null;
     }
 
+    /// Returns array of IntersectionData struct, containing pointers to roads that got intersected and exact position
     fn getIntersectingRoads(self: *const Simulator, allocator: std.mem.Allocator, start: *const Node, end: *const Node) ![]st.IntersectionData {
         var intersections: std.ArrayList(st.IntersectionData) = .empty;
         var collision_point: rl.Vector2 = undefined;
@@ -286,6 +287,7 @@ pub const Simulator = struct {
         return sorted_intersection;
     }
 
+    /// Takes the data about intersections and adds new nodes there alongside with linking existing roads to them
     fn splitRoadsByIntersections(self: *Simulator, intersections: []st.IntersectionData, start: *Node, end: *Node) void {
         if (intersections.len == 0) {
             self.road_man.addRoad(self.allocator, start, end) catch |err| {