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feat(phase-b): GameSession snapshot save/load (JSON)

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ToJson/FromJson round-trip the persistent global bank; play --save-state <file>
persists it, --state <file> restores it — so an expensive booted state (23646
globals) is captured once and reused without re-running *INIT, and it's the
foundation for real save-file work. Tests: unit round-trip + booted-state
survives snapshot (skill data intact). Engine 18/18.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
gamer147
2026-07-07 00:26:23 -04:00
parent ec40fa1d37
commit f6d1384b00
3 changed files with 55 additions and 1 deletions
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8
engine/Age.Cli/Program.cs
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@@ -77,7 +77,12 @@ if (args[0] == "play")
var userScenes = args.Skip(1).Where(a => a.ToUpperInvariant().EndsWith(".BIN")).ToList();
if (userScenes.Count == 0) { Console.WriteLine("usage: play [--boot] <SCENE.BIN...> [0xADDR=VAL ...]"); return 1; }
var scenes = (boot ? bootScripts.Concat(userScenes) : userScenes).ToList();
var session = new GameSession();
// --state <file>: start from a saved snapshot (e.g. a pre-booted state) instead of booting fresh.
string? StateArg(string flag) { int i = Array.IndexOf(args, flag); return i >= 0 && i + 1 < args.Length ? args[i + 1] : null; }
var loadState = StateArg("--state");
var saveState = StateArg("--save-state");
var session = loadState != null ? GameSession.FromJson(File.ReadAllText(loadState)) : new GameSession();
if (loadState != null) Console.WriteLine($"[state] loaded {session.Globals.Count} globals from {loadState}");
foreach (var s in args.Skip(1).Where(a => a.Contains('=')))
{
var kv = s.Split('=');
@@ -94,6 +99,7 @@ if (args[0] == "play")
Console.WriteLine($" {name,-14} {r.Emitted.Count,4} lines, {r.Steps,7} steps (halt: {r.Halt})");
}
Console.WriteLine($"total: {totalLines} lines across {scenes.Count} scene(s); {session.Globals.Count} globals carried");
if (saveState != null) { File.WriteAllText(saveState, session.ToJson()); Console.WriteLine($"[state] saved -> {saveState}"); }
return 0;
}