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feat(engine-ambient): delete static fallbacks; add MultiInstanceEngineTests

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Step 8 (final) of multi-instancing migration. All per-battle statics now
require a BattleAmbient scope — unwrapped writes throw InvalidOperationException
(fail-fast forcing function). MultiInstanceEngineTests proves correctness:
two parallel battles resolve independently, N=4/8/16 stress matches sequential
baseline, GameMgr.GetIns throws without scope.

Migration complete. EngineSessionGate gone. Suite fully green.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
gamer147
2026-06-07 23:19:37 -04:00
parent 9e93a7b198
commit c789d836f1
15 changed files with 449 additions and 131 deletions
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17
SVSim.BattleEngine/Engine/Wizard/ToolboxGame.cs
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@@ -25,10 +25,12 @@ public static class ToolboxGame
private static Transform _gameTransform = null;
private static RealTimeNetworkAgent _realTimeNetworkAgentFallback;
public static RealTimeNetworkAgent RealTimeNetworkAgent
{
get => SVSim.BattleEngine.Ambient.BattleAmbient.Current?.NetworkAgent ?? _realTimeNetworkAgentFallback;
// Soft read: returns null when no scope is active, mirroring GetIns. Engine code reads this
// via `ToolboxGame.RealTimeNetworkAgent?.Foo`-style patterns (network-send paths gated on a
// non-null agent), so a null on the unwrapped path is the correct degrade — not a throw.
get => SVSim.BattleEngine.Ambient.BattleAmbient.Current?.NetworkAgent;
}
public static Transform GameTransform
@@ -60,20 +62,19 @@ public static class ToolboxGame
public static void SetRealTimeNetworkBattle(RealTimeNetworkAgent agent)
{
var c = SVSim.BattleEngine.Ambient.BattleAmbient.Current;
if (c != null) c.NetworkAgent = agent;
else _realTimeNetworkAgentFallback = agent;
// Strict: must be inside a scope to set the per-session agent. Forcing-function — any
// historical unwrapped caller (no production callsite remains) now fails fast.
SVSim.BattleEngine.Ambient.BattleAmbient.Require().NetworkAgent = agent;
}
public static void DestroyNetworkAgent()
{
var c = SVSim.BattleEngine.Ambient.BattleAmbient.Current;
var current = c?.NetworkAgent ?? _realTimeNetworkAgentFallback;
var current = c?.NetworkAgent;
if (current != null)
{
Object.DestroyImmediate(current.gameObject);
if (c != null) c.NetworkAgent = null;
else _realTimeNetworkAgentFallback = null;
c.NetworkAgent = null;
}
}