Basic Entity ID display for debugging

src/infrastructure/road.zig

@@ -46,9 +46,25 @@ pub const Road = struct {
     ///
     /// In the future as we improve and make roads more complex with multiple lanes and such
     /// it will gradually become more complex
-    pub fn draw(self: *const Road, highlighted: bool) void {
+    pub fn draw(self: *const Road, highlighted: bool, display_info: bool) void {
         const colour = if (highlighted) c.ROAD_HIGHLIGHTED_COLOUR else c.ROAD_COLOUR;
         rl.drawLineEx(self.nodes[0].pos, self.nodes[1].pos, c.ROAD_SIZE, colour);
+
+        if (!display_info) return;
+
+        var buf: [100]u8 = undefined;
+        const entity = std.fmt.bufPrintZ(&buf, "{d}", .{self.id}) catch |err| {
+            std.debug.panic("Could not allocate ID into string???: {}\n", .{err});
+        };
+
+        const distance = ut.getVectorP1P2(self.nodes[0].pos, self.nodes[1].pos);
+        const entity_info_pos: rl.Vector2 = .{
+            .x = self.nodes[0].pos.x + distance.x / 2 - c.ROAD_SIZE / 2,
+            .y = self.nodes[0].pos.y + distance.y / 2 - c.ROAD_SIZE / 2,
+        };
+
+        rl.drawText(entity, @trunc(entity_info_pos.x), @trunc(entity_info_pos.y),
+                c.ENTITY_DATA_TEXT_SIZE, c.ENTITY_DATA_TEXT_COLOUR);
     }
 
     /// Important: after this function executes, this road is no longer reachable from its bounding nodes