Fixing an error on clang and silenting a warning on gcc.

Extensions/olcPGEX_RayCastWorld.h

@@ -605,7 +605,7 @@ void olc::rcw::Engine::HandleObjectVsObject(std::shared_ptr<olc::rcw::Object> ob
 // Will be explained in upcoming video...
 bool olc::rcw::Engine::CastRayDDA(const olc::vf2d& vOrigin, const olc::vf2d& vDirection, sTileHit& hit)
 {
-	olc::vf2d vRayDelta = { sqrt(1 + (vDirection.y / vDirection.x) * (vDirection.y / vDirection.x)), sqrt(1 + (vDirection.x / vDirection.y) * (vDirection.x / vDirection.y)) };
+	olc::vf2d vRayDelta = { static_cast<float>(sqrt(1 + (vDirection.y / vDirection.x) * (vDirection.y / vDirection.x))), static_cast<float>(sqrt(1 + (vDirection.x / vDirection.y) * (vDirection.x / vDirection.y))) };
 
 	olc::vi2d vMapCheck = vOrigin;
 	olc::vf2d vSideDistance;