Import Cai1Hsu/re3 @ miami (reVC / GTA:VC decompilation)HEADmiami

Snapshot import (no upstream history) into git.ancap.in.ua/claude, per @lzcnt.
Source: https://github.com/Cai1Hsu/re3 branch miami.

1 files changed, 45 insertions, 0 deletions

diff --git a/src/control/Curves.cpp b/src/control/Curves.cpp
new file mode 100644
index 0000000..31a2767
--- /dev/null
+++ b/src/control/Curves.cpp
@@ -0,0 +1,45 @@
+#include "common.h"
+
+#include "Curves.h"
+
+float CCurves::CalcSpeedScaleFactor(CVector* pPoint1, CVector* pPoint2, float dir1X, float dir1Y, float dir2X, float dir2Y)
+{
+	CVector2D dir1(dir1X, dir1Y);
+	CVector2D dir2(dir2X, dir2Y);
+	float distance = (*pPoint1 - *pPoint2).Magnitude2D();
+	float dp = DotProduct2D(dir1, dir2);
+	if (dp > 0.9f)
+		return distance + Abs((pPoint1->x * dir1Y - pPoint1->y * dir1X) - (pPoint2->x * dir1Y - pPoint2->y * dir1X));
+	else
+		return ((1.0f - dp) * 0.25f + 1.0f) * distance;
+}
+
+void CCurves::CalcCurvePoint(CVector* pPos1, CVector* pPos2, CVector* pDir1, CVector* pDir2, float between, int32 timeOnCurve, CVector* pOutPos, CVector* pOutDir)
+{
+	float actualFactor = CalcSpeedScaleFactor(pPos1, pPos2, pDir1->x, pDir1->y, pDir2->x, pDir2->y);
+	CVector2D dir1 = *pDir1 * actualFactor;
+	CVector2D dir2 = *pDir2 * actualFactor;
+	float t1 = Abs(DotProduct2D(*pPos1 - *pPos2, *pDir1));
+	float t2 = Abs(DotProduct2D(*pPos2 - *pPos1, *pDir2));
+	float curveCoef;
+	if (t1 > t2) {
+		if (between < (t1 - t2) / (t1 + t2))
+			curveCoef = 0.0f;
+		else
+			curveCoef = 0.5f - 0.5f * Cos(3.1415f * (t1 + t2) / (2 * t2) * (between - (t1 - t2) / (t1 + t2)));
+	}
+	else {
+		if (2 * t1 / (t1 + t2) < between)
+			curveCoef = 1.0f;
+		else
+			curveCoef = 0.5f - 0.5f * Cos(3.1415f * between * (t1 + t2) / (2 * t1));
+	}
+	*pOutPos = CVector(
+		(pPos1->x + between * dir1.x) * (1.0f - curveCoef) + (pPos2->x - (1 - between) * dir2.x) * curveCoef,
+		(pPos1->y + between * dir1.y) * (1.0f - curveCoef) + (pPos2->y - (1 - between) * dir2.y) * curveCoef,
+		0.0f);
+	*pOutDir = CVector(
+		(dir1.x * (1.0f - curveCoef) + dir2.x * curveCoef) / (timeOnCurve * 0.001f),
+		(dir1.y * (1.0f - curveCoef) + dir2.y * curveCoef) / (timeOnCurve * 0.001f),
+		0.0f);
+}
\ No newline at end of file