Fix SetPedAimTarget from generating NaN's. (#4145)

* Fix SetPedAimTarget from generating NaN's.

- Fix #492 aim direction and collision vector

* Update CClientPed.cpp

More readable way of fixing #492.

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Co-authored-by: TEDERIs <[email protected]>

Author: Ambassador64

Client/mods/deathmatch/logic/CClientPed.cpp

@@ -1016,12 +1016,12 @@ void CClientPed::SetTargetTarget(unsigned long ulDelay, const CVector& vecSource
         float fRadius = DistanceBetweenPoints3D(m_vecTargetSource, m_vecTargetTarget);
 
         // Grab the angle of the source vector and the angle of the target vector relative to the source vector that applies
-        m_vecBeginTargetAngle.fX = acos((m_vecBeginTarget.fX - m_vecBeginSource.fX) / fRadius);
-        m_vecBeginTargetAngle.fY = acos((m_vecBeginTarget.fY - m_vecBeginSource.fY) / fRadius);
-        m_vecBeginTargetAngle.fZ = acos((m_vecBeginTarget.fZ - m_vecBeginSource.fZ) / fRadius);
-        m_vecTargetTargetAngle.fX = acos((m_vecTargetTarget.fX - m_vecTargetSource.fX) / fRadius);
-        m_vecTargetTargetAngle.fY = acos((m_vecTargetTarget.fY - m_vecTargetSource.fY) / fRadius);
-        m_vecTargetTargetAngle.fZ = acos((m_vecTargetTarget.fZ - m_vecTargetSource.fZ) / fRadius);
+        m_vecBeginTargetAngle.fX = acos(Clamp(-1.0f, (m_vecBeginTarget.fX - m_vecBeginSource.fX) / fRadius, 1.0f));
+        m_vecBeginTargetAngle.fY = acos(Clamp(-1.0f, (m_vecBeginTarget.fY - m_vecBeginSource.fY) / fRadius, 1.0f));
+        m_vecBeginTargetAngle.fZ = acos(Clamp(-1.0f, (m_vecBeginTarget.fZ - m_vecBeginSource.fZ) / fRadius, 1.0f));
+        m_vecTargetTargetAngle.fX = acos(Clamp(-1.0f, (m_vecTargetTarget.fX - m_vecTargetSource.fX) / fRadius, 1.0f));
+        m_vecTargetTargetAngle.fY = acos(Clamp(-1.0f, (m_vecTargetTarget.fY - m_vecTargetSource.fY) / fRadius, 1.0f));
+        m_vecTargetTargetAngle.fZ = acos(Clamp(-1.0f, (m_vecTargetTarget.fZ - m_vecTargetSource.fZ) / fRadius, 1.0f));
 
         // Grab the angle to interpolate and make sure it's below pi and above -pi (shortest path of interpolation)
         m_vecTargetInterpolateAngle = m_vecTargetTargetAngle - m_vecBeginTargetAngle;