Changelog

All notable changes to this project are documented in this file.

Format inspired by Keep a Changelog and Semantic Versioning principles.

[Unreleased]

Troop duplication race-condition hardening for issue #98.
sendunitsComplete() now uses atomic per-record movement claim (proc = 1 only when current worker owns the row) before processing reinforcements.
returnunitsComplete() now uses the same atomic claim flow for returning troops and canceled-settler returns.
sendSettlersComplete() now claims movement rows atomically before processing settle/return outcomes.

Added idempotent A2B request claiming in troop send flow to prevent duplicate processing from concurrent/replayed submissions.
Introduced claimA2b() in database layer and consumed it in sendTroops() before any troop/resource mutation.

Movement completion status updates for the hardened flows are now claim-first (atomic) instead of late batch marking.

New root changelog file.
Admin panel option to list users in the Users menu (?p=users).
New admin users list page with pagination and links to player details: Admin/Templates/users.tpl.
Installer SQL defaults in config form now read from .env (with fallback to legacy MYSQL_* keys).
Random database prefix generation per installation session.
Installer timezone option for Brazil (America/Sao_Paulo) and default timezone set to Sao Paulo.
SSE explicit error payload in croppers builder to avoid infinite reconnect loops.

Docker runtime upgraded to PHP 8.3 (Apache).
Docker Compose database moved to MariaDB latest.
Compose configuration modernized (v2 style), env naming standardized to MARIADB_* with compatibility support.
README and Docker docs updated to reflect PHP 8/MariaDB and modern compose commands.
Installer timezone id mapping fixed in install/index.php to match form options.
Croppers build progress behavior adjusted to report incremental progress in batches.

PHP 8 compatibility:
- Replaced deprecated each() usage.
- Added safe guards for magic_quotes_* checks.
Multiple warnings/fatals from undefined variables and null array offsets across game/admin/installer pages.
Duplicate constant definition warnings in language file (preventing header issues).
Duplicate key failures for croppers index creation in PHP 8 (mysqli_sql_exception behavior) by making index ops idempotent.
Installer and runtime DB connection robustness:
- host:port normalization,
- retry logic,
- throwable-safe handling.
Duplicate primary key errors in units insertion by making addUnits idempotent (ON DUPLICATE KEY UPDATE).
Admin template warnings in report/message pages (undefined keys/indexes).
Admin map tile query now uses dynamic table prefix (TB_PREFIX) instead of hardcoded s1_ tables.
Session/header issues in admin reset script:
- removed output before <?php,
- proper session start checks,
- safe admin access check.
Mass message and system message flows no longer trigger undefined control variable warnings.
Plus menu warning fixed by correcting isset($_GET['id']) condition precedence.
Plus page now displays active option remaining time with seconds and end time.

World data generation optimized for large maps:
- temporary session tuning for bulk writes,
- temporary drop/recreate of secondary indexes in wdata during heavy insert.
Croppers generation optimized:
- per-tile bonus query replaced with chunk-level batch bonus calculation,
- reduced lock contention and improved perceived progress updates.
Build/installer flow updated to avoid stalled progress UI states.

Stricter checks around request/session variables to prevent warnings escalating into header failures.
More defensive null-safe access patterns in DB result handling.
Better error propagation in SSE endpoints.

This changelog reflects the current hardening/migration cycle and operational fixes applied to make the project run cleanly on PHP 8 + MariaDB.
If you want strict version tags (e.g. v8-migration.1, v8-migration.2), convert the dated section above into tagged releases as part of your next release process.