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gauges: secondary/radar MFD composites live on a dev box (Milestone B)

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The pod's secondary/radar cockpit surface now renders as an inset in the
800x600 dev window under BT_DEV_GAUGES: radar/tactical grid, SPEED/HEADING/
MAGNETIC/PROP dials, and the color-coded ARMOR DAMAGE mech schematic -- real
gauge content (nzSec=27247), composited from the shared CPU pixelBuffer.

Composite pass (engine): SVGA16::DrawDevInset palette-expands the secondary
plane into a MANAGED texture on the MAIN device and draws an XYZRHW inset quad;
BTDrawGaugeInset() reaches the gauge renderer's 'sec' port and is called from
DPLRenderer::ExecuteImplementation as the last draw before EndScene.

Three reconstruction bugs fixed to get real content:
1. BTL4Application::MakeGaugeRenderer signature mismatch (REAL fix): the
   reconstructed no-arg override only HID the 2007-engine's widened 3-arg
   virtual MakeGaugeRenderer(int*,int*,int*), so the engine built a base
   L4GaugeRenderer whose ctor never parsed gauge/l4gauge.cfg -> empty symbol
   table -> "undefined label 'bhk1Init'" -> no ports/gauges. Matched the 3-arg
   signature so it truly overrides (args ignored; BT is fullscreen). Same bug
   class as the BTL4GaugeRenderer(false,NULL,NULL,NULL) ctor fix.
2. Parse hung on undefined primitives (gated dev accommodation): the BT gauge
   primitive table (BTL4MethodDescription) is still a stub, so an unknown
   primitive -> ReportParsingError -> Fail() -> a MODAL dialog freezing the
   parse. Under BT_DEV_GAUGES, skip the unknown primitive's params so labels
   register and the base "configure" primitive builds the ports.
3. Gauge widgets AV on NULL data bindings (gated): NumericDisplayScalar's NULL
   value_pointer -> GaugeConnectionDirectOf ctor deref (bind NULL->static zero);
   RankAndScore::Execute derefs unreconstructed game state (Gauge::GuardedExecute
   SEH wrapper -> Disable(True) on first fault).

All guards gated on BT_DEV_GAUGES: default DEV un-regressed (TARGET DESTROYED,
0 crashes) and the pod path is byte-unchanged (strict Fail, no guards).

Remaining (docs/GAUGE_COMPOSITE.md): the real gauge WIDGET reconstruction
(BTL4MethodDescription method table + gauge->game-state data bindings), then
Step 2 (RP<->BT MFD port-name reconcile) + Step 3 (2-window layout).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
arcattack
2026-07-06 10:59:45 -05:00
co-authored by Claude Opus 4.8
parent c13e72d0ba
commit a256813395
10 changed files with 308 additions and 10 deletions
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engine/MUNGA/GAUGREND.cpp
+36 -1
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@@ -1332,7 +1332,42 @@ void
) == False
)
{
ReportParsingError("Undefined primitive");
//
// BT DEV-GAUGES bring-up: the BT-specific gauge primitive
// table (BTL4MethodDescription, btl4grnd.cpp) is still a stub
// -- the BT gauge widget classes (PlayerStatus, ...) aren't
// reconstructed yet, so they don't resolve here. Rather than
// Fail() -- which pops a modal assert dialog and FREEZES the
// game mid-parse -- SKIP the unknown primitive's parameter
// list so the parse can continue: it still registers every
// label (e.g. Bhk1Init -> MechInit) and runs the base
// "configure" primitives that build the gauge PORTS/surfaces
// (the beachhead needs the 'sec'/radar surface, not the
// widgets). Gated on BT_DEV_GAUGES so the POD path keeps the
// strict Fail (it needs a complete, real method table).
//
if (getenv("BT_DEV_GAUGES") != NULL)
{
const char
*skip_token;
int
paren_depth = 1; // the '(' already consumed above
while (
(paren_depth > 0) &&
((skip_token = GetToken()) != NULL)
)
{
if (stricmp(skip_token, "(") == 0)
++paren_depth;
else if (stricmp(skip_token, ")") == 0)
--paren_depth;
}
UngetPreviousToken(); // leave ')' for the check below
}
else
{
ReportParsingError("Undefined primitive");
}
}
if (stricmp(GetToken(), ")") != 0)
{