Initial commit: bt411 -- standalone Windows BattleTech (Tesla 4.10 port)

Clean, self-contained extraction of the BattleTech-specific work from the reverse-engineering workspace -- engine + game + content + build, with nothing from Red Planet or the raw archive dumps. Builds green (Win32) and runs the single-player drive->animate->target->fire->damage->destroy loop out of the box. Layout: engine/ MUNGA + MUNGA_L4 shared 2007 engine, carrying our BT render/loader work (bgfload/L4D3D/L4VIDEO: BSL bit-slice decode, LOD/ground/shadow models) + image codec; the minimal rp/ headers the audio HAL needs game/ reconstructed BT logic + surviving-original BT source + fwd shims + WinMain launcher content/ full runtime tree (BTL4.RES, VIDEO/, GAUGE/, AUDIO/, eggs, BTDPL.INI) docs/ format specs + reconstruction ledgers reference/ raw Ghidra pseudocode (recon source-of-truth) + decomp exporter tools/ MP console emulator + map/resource scanners One top-level CMake builds munga_engine lib + bt410_l4 game lib + btl4.exe. All paths relativized (186 fwd shims + ~437 CMake abs paths -> repo-relative); DXSDK is the one external, overridable via -DDXSDK. Verified: builds to a byte-identical 2.27MB exe and runs combat (TARGET DESTROYED, 0 crashes) against the bundled content. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-05 21:03:40 -05:00
commit 7b7d465e5e
4192 changed files with 604371 additions and 0 deletions
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+#include "munga.h"
+#pragma hdrstop
+
+#include "scalar.h"
+
+int Round(Scalar value)
+{
+	int whole_part = floor(value);
+	Scalar fractional_part = value - whole_part;
+	if (fractional_part >= 0.5)
+		return whole_part + 1;
+	else
+		return whole_part;
+}
+
+
+
+void Find_Roots(Scalar a, Scalar b, Scalar c, Scalar *center, Scalar *range)
+{// a*x*x + b*x + c = 0
+
+	// See if the quadratic is solvable
+	*range = b*b - 4.0f*a*c;
+	if (*range < 0.0f || Small_Enough(a))
+	{
+		*range = -1.0f;
+	}
+	else
+	{
+		// Solve the single root case
+		a *= 2.0f;
+		*center = -b / a;
+		if (*range < SMALL)
+			*range = 0.0f;
+
+		// Find the two-root extents
+		else
+		{
+			*range = Sqrt(*range);
+			*range /= a;
+		}
+	}
+}
+
+static void Verify_Arguments(const char *str, void *value)
+{
+	if (str == NULL)
+		Fail("Convert_From_Ascii - str == NULL");
+	if (value == NULL)
+		Fail("Convert_From_Ascii - value == NULL");
+	if (isalpha(*str))
+	{
+		std::cout << "Convert_From_Ascii - str == " << str << "\n";
+		Fail("Convert_From_Ascii - isalpha(*str)");
+	}
+}
+
+void Convert_From_Ascii(const char *str, char *value)
+{
+	#if 0
+		Check_Pointer(str);
+		Check_Pointer(value);
+		if (isalpha(*str))
+		{
+			Dump(str);
+		}
+		Verify(!isalpha(*str));
+	#else
+		Verify_Arguments(str, value);
+	#endif
+	*value = (char)atoi(str);
+}
+
+void Convert_From_Ascii(const char *str, unsigned char *value)
+{
+	#if 0
+		Check_Pointer(str);
+		Check_Pointer(value);
+		if (isalpha(*str))
+		{
+			Dump(str);
+		}
+		Verify(!isalpha(*str));
+	#else
+		Verify_Arguments(str, value);
+	#endif
+	*value = (unsigned char)atoi(str);
+}
+
+void Convert_From_Ascii(const char *str, int *value)
+{
+	#if 0
+		Check_Pointer(str);
+		Check_Pointer(value);
+		if (isalpha(*str))
+		{
+			Dump(str);
+		}
+		Verify(!isalpha(*str));
+	#else
+		Verify_Arguments(str, value);
+	#endif
+	*value = atoi(str);
+}
+
+void Convert_From_Ascii(const char *str, unsigned int *value)
+{
+	#if 0
+		Check_Pointer(str);
+		Check_Pointer(value);
+		if (isalpha(*str))
+		{
+			Dump(str);
+		}
+		Verify(!isalpha(*str));
+	#else
+		Verify_Arguments(str, value);
+	#endif
+	*value = atoi(str);
+}
+
+void Convert_From_Ascii(const char *str, long *value)
+{
+	#if 0
+		Check_Pointer(str);
+		Check_Pointer(value);
+		if (isalpha(*str))
+		{
+			Dump(str);
+		}
+		Verify(!isalpha(*str));
+	#else
+		Verify_Arguments(str, value);
+	#endif
+	*value = atol(str);
+}
+
+void Convert_From_Ascii(const char *str, unsigned long *value)
+{
+	#if 0
+		Check_Pointer(str);
+		Check_Pointer(value);
+		if (isalpha(*str))
+		{
+			Dump(str);
+		}
+		Verify(!isalpha(*str));
+	#else
+		Verify_Arguments(str, value);
+	#endif
+	*value = atol(str);
+}
+
+void Convert_From_Ascii(const char *str, Scalar *value)
+{
+	#if 0
+		Check_Pointer(str);
+		Check_Pointer(value);
+		if (isalpha(*str))
+		{
+			Dump(str);
+		}
+		Verify(!isalpha(*str));
+	#else
+		Verify_Arguments(str, value);
+	#endif
+   *value = atof(str);
+}