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Fix repeated FIELD BGM restarts

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This commit is contained in:
gamer147
2026-07-27 11:40:54 -04:00
parent da34e6ad15
commit b7185bbb21
5 changed files with 49 additions and 6 deletions
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25
engine/Age.Engine.Tests/SfxOpsTests.cs
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@@ -7,6 +7,31 @@ using Xunit;
public class SfxOpsTests
{
[Fact]
public void ReassertingCurrentBgmPreservesPlaybackUntilTrackChangesOrStops()
{
var table = OpcodeTableJson.Load(Paths.OpcodesJson);
var script = ScriptAssembler.Assemble(table, "BGM",
new List<(int, Operand[])>
{
(0xbf, new[] { new Operand(0, 24) }),
(0xbf, new[] { new Operand(0, 24) }), // FIELD action cleanup: keep current playback position
(0xbf, new[] { new Operand(0, 25) }),
(0xbf, new[] { new Operand(0, 25) }),
(0xc2, new[] { new Operand(0, 0), new Operand(0, 0) }),
(0xbf, new[] { new Operand(0, 25) }), // fade-to-zero cleared the current track
(0x2, Array.Empty<Operand>()),
}, Array.Empty<string>());
var host = new RecordingHost();
var vm = new VirtualMachine(script, table, host);
vm.Run();
Assert.Equal("exit", vm.HaltReason);
Assert.Equal([24L, 25L, 25L], host.BgmTracks);
Assert.Equal((0, 0L), Assert.Single(host.BgmFades));
}
[Fact]
public void Sc0000AudioLifecycleDelayAndDuckControlReachHost()
{