Описание
# ⚠️ [ALPHA] Siemens Desiro UK Expansion: Class 360 & Class 450
> **DEVELOPMENT STATUS: EARLY ALPHA**
> This expansion pack is currently in active alpha development. Geometry, cab controls, sounds, and texture mapping are work-in-progress and subject to frequent updates. Expect placeholder elements while coach interiors and coupling systems are finalized!
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Following up on the Desiro City fleet (700/707/717), we are stepping back to the legendary first-generation **Siemens Desiro UK** family that revolutionized British regional rail in the early 2000s.
This pack brings two iconic, distinct configurations to life: the sleek, aerodynamic **Class 360** overhead AC express unit, and the rugged, gangway-fronted **Class 450** third-rail commuter workhorse.
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## ⚡ The Trains in Development
### 🔵 British Rail Class 360 — *The East Anglian / Midland Express*
* **Real-Life Role:** Originally built for First Great Eastern (later Greater Anglia) to operate $100\text{ mph}$ fast services out of London Liverpool Street to Clacton, Ipswich, and Colchester. Later refurbished and cascaded to East Midlands Railway (EMR Connect) for electric services between St Pancras and Corby.
* **Distinct Exterior Styling:** Unlike the 450, the Class 360 features a sleek, full-width aerodynamic cab front without an end corridor gangway.
* **Traction & Roof Detail:**
* Dedicated $25\text{ kV AC}$ single-arm high-speed Brecknell Willis pantograph mounted atop the intermediate Trailer Pantograph (TPO) car.
* Recessed roof well housing high-voltage vacuum circuit breakers (VCB) and roof conduits.
* **Coach-by-Coach Interior Layout:**
* **DMSO (Driving Motor):** Spacious forward cab with wrap-around desk, original Siemens analogue gauges mixed with early digital display units, and an adjacent dedicated First Class compartment with plush 2+1 seating.
* **PTSO (Pantograph Trailer):** Fitted with the iconic curved PRM-compliant universal accessible toilet pod and adjacent priority seating bays.
* **TSO (Trailer Standard Open):** Dense 2+2 regional express seating with overhead parcel shelves and deep luggage stacks.
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### 🔴 British Rail Class 450 — *The South West Commuter Backbone*
* **Real-Life Role:** The quintessential South West Trains / South Western Railway outer-suburban unit. Runs heavily coupled services out of London Waterloo across Surrey, Hampshire, and Berkshire down to Portsmouth Harbour, Southampton, Basingstoke, and Alton.
* **Distinct Exterior Styling:** Built with flat-faced cab ends featuring full operational gangway connections, allowing passengers and crew to walk between multiple coupled 4-car units.
* **Traction & Roof Detail:**
* Pure $750\text{ V DC}$ third-rail collection shoes modeled on the bogies.
* Clean, continuous roofline without high-voltage equipment, complete with authentic air conditioning modules and exhaust grilles.
* **Coach-by-Coach Interior Layout:**
* **DMSO (Driving Motor Standard):** Authentic 450 driver desk complete with AWS flower, DRA switch, and gangway viewing mirrors.
* **Suburban 3+2 Seating:** Replicating the high-density peak-commuter layout in authentic SWT blue/swirl or SWR moquettes.
* **Accessibility & Multi-Use Coach:** Mid-rake coach with dedicated wide-aisle wheelchair positions, emergency call buttons, companion seats, and cycle storage straps.
* **First Class Section:** Partitioned section featuring wider 2+2 seating, reading lights, and anti-macassars.
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## 🚧 Current Alpha Roadmap & Progress
| Feature | Class 360 Status | Class 450 Status |
| :--- | :--- | :--- |
| **Exterior 3D Shell** | 🟢 Complete | 🟢 Complete |
| **Bogies & Shoe Gear** | 🟢 Complete | 🟢 Complete |
| **Roof & Pantograph** | 🟡 Rigging In Progress | 🟢 Complete (Clean Roof) |
| **Cab Desks & Glazing** | 🟡 Texturing Desk | 🟡 Modeling Gangway Door |
| **Interiors (Standard)** | 🟡 Seating Layout Placed | 🟡 Seating Layout Placed |
| **Accessible Toilet Pod** | 🔴 In Modeling Queue | 🔴 In Modeling Queue |
| **Coupling / Gangways** | N/A (Solid Aerodynamic Nose)| 🟡 Gangway Bellows in Rigging |
| **Audio & Traction Motors** | 🔴 Placeholder Desiro Sounds | 🔴 Placeholder Desiro Sounds |
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## 🛠️ Testing & Feedback
Because this pack is in **Alpha**, your feedback on scaling, seat alignments, and texture accuracy is vital!
* Report any model clipping, missing faces, or bounding box glitches in our Discord tracker.
* If you have reference photos of the cab desks or toilet modules, feel free to drop them in the dev channel to help finalize the interior detailing.