1 files changed, 33 insertions, 0 deletions

diff --git a/src/control/Curves.cpp b/src/control/Curves.cpp
index 84d4af5a..c5f64bf7 100644
--- a/src/control/Curves.cpp
+++ b/src/control/Curves.cpp
@@ -2,5 +2,38 @@
 #include "patcher.h"
 #include "Curves.h"
 
+#if 0
 WRAPPER float CCurves::CalcSpeedScaleFactor(CVector*, CVector*, float, float, float, float) { EAXJMP(0x420410); }
+#else
+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) * 0.2f + 1.0f) * distance;
+}
+#endif
+
+#if 0
 WRAPPER void CCurves::CalcCurvePoint(CVector*, CVector*, CVector*, CVector*, float, int32, CVector*, CVector*) { EAXJMP(0x4204D0); }
+#else
+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 curveCoef = 0.5f - 0.5f * cos(3.1415f * between);
+	*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);
+}
+#endif
\ No newline at end of file