Additional fixes and todo plans

src/simulator.zig

@@ -1,6 +1,7 @@
 const std = @import("std");
 const rl = @import("raylib");
 
+const c = @import("constants.zig");
 const NodeManager = @import("infrastructure/node_manager.zig").NodeManager;
 const RoadManager = @import("infrastructure/road_manager.zig").RoadManager;
 
@@ -8,12 +9,15 @@ pub const Simulator = struct {
     allocator: std.mem.Allocator,
     node_man: NodeManager,
     road_man: RoadManager,
+    // vars
+    auto_continue: bool,
 
     pub fn init(new_allocator: std.mem.Allocator) Simulator {
         return .{
             .allocator = new_allocator,
             .node_man = .init(),
             .road_man = .init(),
+            .auto_continue = false,
         };
     }
 
@@ -23,7 +27,7 @@ pub const Simulator = struct {
     }
 
     pub fn draw(self: *const Simulator, pos: rl.Vector2) void {
-        rl.clearBackground(.light_gray);
+        rl.clearBackground(c.BACKGROUND_COLOR);
 
         self.road_man.draw();
         self.node_man.draw(pos);
@@ -35,6 +39,8 @@ pub const Simulator = struct {
     }
 
     fn handleKeyboardInput(self: *Simulator) void {
+        self.auto_continue = rl.isKeyDown(.left_control);
+
         if (rl.isKeyReleased(.c)) self.clear();
     }
 
@@ -54,7 +60,7 @@ pub const Simulator = struct {
                 std.debug.panic("Failed to add a new road or assigning its nodes: {}\n", .{err});
             };
 
-            self.node_man.temp_node = null;
+            self.node_man.temp_node = if (self.auto_continue) cur_node else null;
             return;
         }