Intersection sorting implemented

src/infrastructure/node_manager.zig

@@ -82,7 +82,7 @@ pub const NodeManager = struct {
 
     /// generates finds the last element in the list and returns id + 1 or 0 if there are no elements in the list
     fn getNewID(self: *const NodeManager) usize {
-        return if (self.getLastRef()) |ref| ref.*.id + 1 else 0;
+        return if (self.nodes.getLastOrNull()) |last| last.id + 1 else 0;
     }
 
     /// Iterates through all nodes and runs the deinit procedure on each of them
@@ -98,6 +98,11 @@ pub const NodeManager = struct {
         // This also means we don't have to deinit it, since it has no elements
         if (node_to_remove.roads.items.len > 0) return;
 
+        // TODO
+        // When a node gets removed the empty space left by now non-existant node will get swapped with another node
+        // In practice this however means that pointers to the node that gets swapped will be invalid
+        // causing fatal errors
+
         for (self.nodes.items, 0..) |*node, i| {
             if (node.id != node_to_remove.id) continue;
 

src/infrastructure/road_manager.zig

@@ -57,12 +57,11 @@ pub const RoadManager = struct {
 
     /// Generates finds the last element in the list and returns id + 1 or 0 if there are no elements in the list
     fn getNewID(self: *const RoadManager) usize {
-        return if (self.getLastRef()) |ref| ref.*.id + 1 else 0;
+        return if (self.roads.getLastOrNull()) |last| last.id + 1 else 0;
     }
 
     /// Removes the road which reference is passed in; returns error if the road is invalid
     pub fn remove(self: *RoadManager, road_to_remove: *Road) !void {
-        // todo fix leak
         try road_to_remove.unreferenceNodes();
 
         for (self.roads.items, 0..) |*road, i| {