Version History

jrpm-0.1.0 (2026-08-14) cmclient Port Complete

Based on the initial 0.1.0, completed the port of five batches of cmclient features (modded + cmclient full series):

modded Batch 1: Vehicle trip history (b89f93f9) + Adjustable plane taxi speed (b89f93f9);
cmclient Batch 2: Location bookmarks / Cargo details / Spectate (089480b3);
cmclient Batch 0: cmgamespeed / cmgamestats / cmexport / cmtreemap console commands (1fd94d12);
cmclient Batch 3 ① Highlight: Object-level build preview (stations/tracks/depots/airports), hooked into viewport drawing pipeline and build tools (6 commits, d97aa38a → 1957bf45);
cmclient Batch 3 ③ Blueprint: Area selection copy/rotate/16 slots/reconstruct (8e08ca6b);
cmclient Batch 4 ④ Town Zoning: Tz zoning + growth_tiles coloring + GRWT save chunk (9e3f95a2);
cmclient Batch 5 ⑤ Command Replay: cmdrecord / cmdreplay (f113acce28);
Console parameter convention fix: All jrpm commands now use argv[1] as the starting parameter (argv[0] is the command name).

② Command object layer not ported: Highlight/blueprint/replay bypass cmclient's 2251-line generated code by using CMD_ERROR, command closures, and jrpm native command serialization respectively.

growth_tiles data stored in a separate GRWT chunk; old saves (without this chunk) load fully compatible;
Command record files (.jrcm) are jrpm's private format, cross-version compatibility is not guaranteed.

First jrpm version, based on jgrpp 0.73.1 + pulsexlb px-patch merge, with ported modded / cmclient features.

Merged pulsexlb px-patch (152 commits):
- Train decoupling (decouple): decouple/couple orders, path signal transfer, coupling length/speed limits, dual-head, NewGRF coupling, coupling pathfinding, independent scheduling after decoupling;
- Modular airports (multitile-airport): air type system, PBS air traffic control, YAPF air pathfinding, airport layout modification (allow_modify_airports);
- Save versions added SLV_MULTITILE_AIRPORTS / SLV_ORDER_DECOUPLE.
Version rename: openttd-jrpm / jrpm-0.1.0 (executable name and revision string).
Server multi-version compatibility: jrpm server accepts jrpm / original jgrpp / pulsexlb clients.
jrpm exclusive features:
- Resource download multi-mirror + file-level parallel (configurable concurrency);
- Vehicle auto-grouping by shared orders (window button + autogroup command);
- Whole-game-aware AI (AIGlobal API + GlobalAI example, controlled by setting toggle);
- Build cost tooltip (removed per request, commit 96ebfb75).
modded port (Batch 1):
- Vehicle trip history (last 10 trips profit/occupancy/duration, History button in vehicle details window);
- Adjustable plane taxi speed (vehicle.plane_taxi_speed, XSLF feature-gated, old save compatible).
cmclient reference (Batch 2):
- Location bookmarks (savelocation / gotolocation, 9 slots);
- Company cargo details window (company_cargo);
- Spectate helper (watch <company_id>).

Inherits jgrpp convention: can load trunk saves (up to the most recently merged version);
jrpm saves (containing multitile airport/decouple order data) not guaranteed to be readable by old jgrpp saves;
Save version SAVEGAME_VERSION is consistent with pulsexlb (SLV_CUSTOM_SUBSIDY_DURATION);
All new features use XSLF extended feature gating or NOSAVE, do not break old saves.

jgrpp 0.73.1: The base of this project (OpenTTD 16.0 kernel + all JGR features).
pulsexlb px-patch 2608.3: Source of train decoupling and modular airports.
embeddedt/OpenTTD-modded (0.59.1 era): Source of trip history and taxi speed.
citymania-org/cmclient (vanilla 15.3): Source of location bookmarks/cargo details/spectate reference.

[x] Real machine build verification and first build error fixes
[x] Trip history + Taxi speed (modded Batch 1)
[x] Location bookmarks + Cargo details + Spectate (cmclient Batch 2)
[ ] Highlight system + Blueprint system (cmclient Batch 3, see Roadmap)
[ ] HTTP transport layer thread pool + Range chunked download (single large file acceleration)
[ ] Map send compression comparison optimization
[ ] Per-cargo income statistics (requires save format extension)
[ ] (Long-term) Rust server runtime integration (reference Openttd-Cluster)