From fe5bea6aaa737615ba865c48322e0528b1f51796 Mon Sep 17 00:00:00 2001
From: Marto <marto@marto.si>
Date: Tue, 14 Apr 2026 01:23:58 +0200
Subject: [PATCH] Splitting functionality partially implemented

---
 src/infrastructure/node_manager.zig |  3 ++-
 src/simulator.zig                   | 30 ++++++++++++++++++++++-------
 2 files changed, 25 insertions(+), 8 deletions(-)

diff --git a/src/infrastructure/node_manager.zig b/src/infrastructure/node_manager.zig
index a17a208..a78d10b 100644
--- a/src/infrastructure/node_manager.zig
+++ b/src/infrastructure/node_manager.zig
@@ -105,7 +105,8 @@ pub const NodeManager = struct {
 
         for (self.nodes.items, 0..) |*node, i| {
             if (node.id != node_to_remove.id) continue;
-
+            
+            // This deinit exists here because even if roads list is empty something may have been added and removed, meaning the memory is still being held
             node.deinit(allocator);
             _ = self.nodes.swapRemove(i);
             return;
diff --git a/src/simulator.zig b/src/simulator.zig
index 9f9d226..a1d0d11 100644
--- a/src/simulator.zig
+++ b/src/simulator.zig
@@ -96,16 +96,13 @@ pub const Simulator = struct {
             const temp = self.node_man.temp_node.?;
             if (temp.id == node.id) return;
 
-            // todo remove
+            // todo remove and instead have the split function create all the new roads
             self.road_man.add(self.allocator, temp, node) catch |err| {
                 std.debug.panic("Error while attempting to add a road: {}\n", .{err});
             };
 
             // get intersections made
             // todo plan out the implementation
-            // add both nodes to the intersection array
-            // first in front, second in last
-            // all of the road connections will not be added here but rather in the split_roads function as it will
             // create road connection for each nodes that are to be connected via connection
             const data = self.getIntersectingRoads(self.allocator, temp, node) catch |err| {
                 std.debug.panic("Failed to save intersection data: {}\n", .{err});
@@ -212,14 +209,33 @@ pub const Simulator = struct {
         return sorted_intersections;
     }
 
-    fn splitRoadsByPoints(self: *Simulator, intersections: []const st.IntersectionData) void {
-        _ = self; // autofix
+    fn splitRoadsByPoints(self: *Simulator, intersections: []const st.IntersectionData, start: *const Node, end: *const Node) void {
+        _ = end; // autofix
+        _ = start; // autofix
         // todo plan it out
         if (intersections.len == 0) return;
 
+        // We have done that every intersection creates new node and reconnects existing connections
+        // TODO
+        // But now we have to implement that the new roads are being created in the other axis as well and connected
+        // to these new nodes
         for (0..intersections.len) |i| {
             const intersection = intersections[i];
-            _ = intersection; // autofix
+            // The node created at the point of intersection
+            const new_node = self.node_man.getSelectedNode(intersection.point);
+
+            // Pointer to the node that borders the road that was intersected
+            // This node and the new_node will become nodes for the new road being created
+            const road_old_node = intersection.road.nodes[1];
+            // The old road that was intersected now borders the new node
+            // and the old node is removed from the road's end node reference,
+            intersection.road.nodes[1] = new_node;
+            // As is the end node's road reference
+            road_old_node.unreferenceRoad(intersection.road);
+
+            self.road_man.add(self.allocator, new_node, road_old_node) catch |err| {
+                std.debug.panic("Failed to create the new split road: {}\n", .{err});
+            };
         }
 
     }