Initial import of Red Planet v4.10 Win32 source

Imports the current Win32 source for the pod-racing game 'Red Planet',
built on the MUNGA engine and its L4 (Win32/DirectX) platform layer:

- MUNGA / MUNGA_L4: cross-platform engine core and Win32 backend
- RP / RP_L4: Red Planet game logic and Win32 application
- DivLoader, Setup1: asset loader and installer project
- lib, MUNGA_L4/openal, MUNGA_L4/sos: third-party audio dependencies

Removed stale Subversion metadata and added .gitignore/.gitattributes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

MUNGA/SPLINE.cpp

@@ -0,0 +1,114 @@
+#include "munga.h"
+#pragma once
+
+#include "spline.h"
+
+#if defined(USE_SIGNATURE)
+	int Is_Signature_Bad(const volatile CubicCurve *)
+	{
+		return False;
+	}
+#endif
+
+Logical CubicCurve::TestInstance() const
+{
+	return True;
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+CubicCurve::CubicCurve(
+	const Point3D& p1,
+	const Vector3D& r1,
+	const Point3D& p4,
+	const Vector3D& r4
+)
+{
+	Check_Pointer(this);
+	Check(&p1);
+	Check(&r1);
+	Check(&p4);
+	Check(&r4);
+
+	//
+	//----------------------------------
+	// Generate the hermite basis matrix
+	//----------------------------------
+	//
+	basisMatrix(0,0) = 2.0f*(p1.x - p4.x) + r1.x + r4.x;
+	basisMatrix(0,1) = 2.0f*(p1.y - p4.y) + r1.y + r4.y;
+	basisMatrix(0,2) = 2.0f*(p1.z - p4.z) + r1.z + r4.z;
+
+	basisMatrix(1,0) = 3.0f*(p4.x - p1.x) - 2.0f*r1.x - r4.x;
+	basisMatrix(1,1) = 3.0f*(p4.y - p1.y) - 2.0f*r1.y - r4.y;
+	basisMatrix(1,2) = 3.0f*(p4.z - p1.z) - 2.0f*r1.z - r4.z;
+
+	basisMatrix(2,0) = r1.x;
+	basisMatrix(2,1) = r1.y;
+	basisMatrix(2,2) = r1.z;
+
+	basisMatrix(3,0) = p1.x;
+	basisMatrix(3,1) = p1.y;
+	basisMatrix(3,2) = p1.z;
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+CubicCurve::CubicCurve(
+	const Point3D& p1,
+	const Point3D& p2,
+	const Point3D& p3,
+	const Point3D& p4
+)
+{
+	Check_Pointer(this);
+	Check(&p1);
+	Check(&p2);
+	Check(&p3);
+	Check(&p4);
+
+	//
+	//---------------------------------
+	// Generate the bezier basis matrix
+	//---------------------------------
+	//
+	basisMatrix(0,0) = p4.x - p1.x + 3.0f*(p2.x - p3.x);
+	basisMatrix(0,1) = p4.y - p1.y + 3.0f*(p2.y - p3.y);
+	basisMatrix(0,2) = p4.z - p1.z + 3.0f*(p2.z - p3.z);
+
+	basisMatrix(1,0) = 3.0f*(p1.x + p3.x) - 6.0f*p2.x;
+	basisMatrix(1,1) = 3.0f*(p1.y + p3.y) - 6.0f*p2.y;
+	basisMatrix(1,2) = 3.0f*(p1.z + p3.z) - 6.0f*p2.z;
+
+	basisMatrix(2,0) = 3.0f*(p2.x - p1.x);
+	basisMatrix(2,1) = 3.0f*(p2.y - p1.y);
+	basisMatrix(2,2) = 3.0f*(p2.z - p1.z);
+
+	basisMatrix(3,0) = p1.x;
+	basisMatrix(3,1) = p1.y;
+	basisMatrix(3,2) = p1.z;
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+void
+	CubicCurve::Evaluate(
+		Scalar t,
+		Point3D *p,
+		Vector3D *v
+	)
+{
+	Check(this);
+	Check_Pointer(p);
+	Check_Pointer(v);
+	Verify(t >= 0.0f && t <= 1.0f);
+
+	Point3D t_pos;
+	t_pos.z = t;
+	t_pos.y = t_pos.z * t;
+	t_pos.x = t_pos.y * t;
+	p->Multiply(t_pos, basisMatrix);
+
+	Vector3D t_vec(3.0f*t*t, 2.0f*t, 1.0f);
+	v->Multiply(t_vec, basisMatrix);
+}