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Implement numeric HUD rendering

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gamer147
2026-07-21 15:54:13 -04:00
parent fe1531097a
commit a93d3b64bf
6 changed files with 273 additions and 12 deletions
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47
engine/Age.Engine/Vm/VirtualMachine.cs
View File

@@ -1,6 +1,7 @@
using Age.Engine.Diagnostics;
using Age.Engine.Hosting;
using Age.Engine.Model;
using System.Text;
namespace Age.Engine.Vm;
/// <summary>A stable identity/snapshot of the exact script frame currently executing.</summary>
@@ -22,6 +23,7 @@ public sealed class VirtualMachine
private readonly OpcodeTable _t;
private readonly IHost _host;
private readonly VmOptions _o;
private readonly Encoding _nativeStringEncoding;
private readonly IScriptProvider? _provider;
private static readonly bool _diagSetTexture = System.Environment.GetEnvironmentVariable("AGE_DIAG_SETTEX") == "1";
private ExecFrame _cur = null!;
@@ -87,8 +89,12 @@ public sealed class VirtualMachine
public VirtualMachine(Script s, OpcodeTable t, IHost host, VmOptions? o = null,
IScriptProvider? provider = null, ITraceSink? sink = null,
AdvTextHistory? textHistory = null)
{ _s = s; _t = t; _host = host; _o = o ?? new VmOptions(); _provider = provider;
_sink = sink ?? NullTraceSink.Instance; TextHistory = textHistory ?? new AdvTextHistory(); }
{
_s = s; _t = t; _host = host; _o = o ?? new VmOptions(); _provider = provider;
Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
_nativeStringEncoding = Encoding.GetEncoding(_o.NativeStringCodePage);
_sink = sink ?? NullTraceSink.Instance; TextHistory = textHistory ?? new AdvTextHistory();
}
/// <summary>Queue global writes and return only the identified active frame at its next opcode boundary.
/// Writes are copied here and applied by the VM thread before another opcode executes.</summary>
@@ -315,6 +321,12 @@ public sealed class VirtualMachine
}
}
private int NativeStringByteLength(string value)
{
int nul = value.IndexOf('\0');
return _nativeStringEncoding.GetByteCount(nul < 0 ? value : value[..nul]);
}
private static VmAddress Ga(Dictionary<int, VmAddress> d, int k)
=> d.TryGetValue(k, out var value) ? value : VmAddress.Global(0);
@@ -657,6 +669,9 @@ public sealed class VirtualMachine
if (IsStr(a[0]) || IsStr(a[1])) WriteStr(a[0], ReadStr(a[1]));
else Write(a[0], Read(a[1]));
return pc + 1;
case "halve-strlen": // 0x1a6: strlen(native encoded bytes) >> 1
Write(a[0], NativeStringByteLength(ReadStr(a[1])) >> 1);
return pc + 1;
case "lookup-array":
LookupStore(a[0], BaseAddr(a[1]).Offset(Read(a[2]))); return pc + 1;
case "lookup-array-2d":
@@ -1347,6 +1362,34 @@ public sealed class VirtualMachine
(int)Read(a[4]), (int)Read(a[5]), (int)Read(a[6]), (int)Read(a[7]));
_host.DrawTexture((int)Read(a[1]), (int)Read(a[2]), (int)Read(a[3]), (int)Read(a[4]),
(int)Read(a[5]), (int)Read(a[6]), (int)Read(a[7])); return pc + 1; // IHost seam (oracle log; Godot no-ops)
case "u0041F3A0":
case "register-numeric-glyph-style": // 0x13a: (style)(surface)(atlas x/y)(digit w/h)
{
int styleIndex = unchecked((int)Read(a[0]));
if (!Gfx.RegisterNumericGlyphStyle(styleIndex, unchecked((int)Read(a[1])),
unchecked((int)Read(a[2])), unchecked((int)Read(a[3])),
unchecked((int)Read(a[4])), unchecked((int)Read(a[5]))))
{
HaltReason ??= $"numeric-glyph-style-index-out-of-range:{styleIndex}";
return HALT;
}
return pc + 1;
}
case "u00422460":
case "draw-decimal-glyphs": // 0x23b: retained decimal glyph draw
{
int styleIndex = unchecked((int)Read(a[1]));
if (!Gfx.DrawDecimalGlyphs(Read(a[0]), styleIndex, unchecked((int)Read(a[2])),
unchecked((int)Read(a[3])), unchecked((int)Read(a[4])),
unchecked((int)Read(a[5])), unchecked((int)Read(a[6]))))
{
HaltReason ??= (uint)styleIndex >= 11
? $"numeric-glyph-style-index-out-of-range:{styleIndex}"
: $"numeric-glyph-style-unregistered:{styleIndex}";
return HALT;
}
return pc + 1;
}
case "get-texture-size": // 0x208 (slot) (out_w) (out_h)
{
var (gw, gh) = _host.GetTextureSize((int)Read(a[0]));

5
engine/Age.Engine/Vm/VmOptions.cs
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@@ -8,5 +8,8 @@ namespace Age.Engine.Vm;
/// (Godot) and for the dialogue-coverage sweep that deliberately walks every page.</param>
/// <param name="IgnoreExitRequests">Debug-only divergence: treat op 0x1 as a no-op so unreachable
/// post-exit bytecode can be explored. Leave false for native-faithful execution.</param>
/// <param name="NativeStringCodePage">Encoding used when an opcode measures the engine's byte-string
/// representation. SYS4 defaults to CP932; another container frontend can select its own code page.</param>
public sealed record VmOptions(int EmitCap = 2, long MaxSteps = 2_000_000, int CallDepthCap = 64,
bool HaltAtWaitForInput = false, bool IgnoreExitRequests = false);
bool HaltAtWaitForInput = false, bool IgnoreExitRequests = false,
int NativeStringCodePage = 932);