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feat(a2a): add IHost.WaitForInput hook (wait-for-input 0x72); trace parity preserved

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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
gamer147
2026-07-06 14:48:46 -04:00
parent 708f887a58
commit 9d9b5e4e45
4 changed files with 35 additions and 1 deletions
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31
engine/Age.Engine.Tests/WaitForInputTests.cs Normal file
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@@ -0,0 +1,31 @@
using System.Collections.Generic;
using Age.Engine.Hosting;
using Age.Engine.Sys4;
using Age.Engine.Vm;
using Xunit;
public class WaitForInputTests
{
private sealed class CountHost : IHost
{
public int Waits;
public List<int> Emitted = new();
public void ShowText(int offset, string text) => Emitted.Add(offset);
public void CallScript(long id) { }
public void OnStub(int opcode) { }
public void WaitForInput() => Waits++;
}
[Fact]
public void WaitForInputFiresAndEmittedIsStable()
{
var table = OpcodeTableJson.Load(Paths.OpcodesJson);
var script = Sys4Loader.Load(Paths.Scripts()["SC0000.BIN"], table);
var host = new CountHost();
var vm = new VirtualMachine(script, table, host);
vm.Run();
Assert.True(host.Waits > 0, "wait-for-input (0x72) should fire at least once");
Assert.Equal(186, host.Emitted.Count); // unchanged vs the A1 SC0000 trace
Assert.Equal("exit", vm.HaltReason);
}
}

1
engine/Age.Engine/Hosting/CaptureHost.cs
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@@ -7,4 +7,5 @@ public sealed class CaptureHost : IHost
public void ShowText(int offset, string text) => Emitted.Add((offset, text));
public void CallScript(long id) => CallScriptCount++;
public void OnStub(int opcode) { Stubs.TryGetValue(opcode, out var c); Stubs[opcode] = c + 1; }
public void WaitForInput() { }
}

1
engine/Age.Engine/Hosting/IHost.cs
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@@ -4,4 +4,5 @@ public interface IHost
void ShowText(int offset, string text);
void CallScript(long id);
void OnStub(int opcode);
void WaitForInput();
}

3
engine/Age.Engine/Vm/VirtualMachine.cs
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@@ -164,7 +164,8 @@ public sealed class VirtualMachine
_host.ShowText(off, text);
}
return pc + 1;
case "end-text-line": case "wait-for-input": case "set-font":
case "wait-for-input": _host.WaitForInput(); return pc + 1;
case "end-text-line": case "set-font":
case "comment": case "display-furigana": case "dev_ukn":
return pc + 1;
default: