FVector MyVector = FVector(1.2f, 3.4f, 6.1f);why it doesn't work?

Unreal Courses Talk
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I am a cpp developer and I am learning the unreal engine by your course but there is something occupied my mind and that is why we can’t initialize the fvector liuke this:FVector MyVector(1, 2, 3). Because in cpp we can call a constructor of a struct like this but,In unreal we have to call like this:FVector MyVector = FVector(1.2f, 3.4f, 6.1f);.why?

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Hi,
I suspect the reason is FVector is actually created from a templated struct and not just a regular struct and that the FVector itself expects doubles. When you specify int values it doesn’t know what to do.

The actual type is complex and as a result, the constructor doesn’t work as expected. Note that the screenshpt below is 2 levels down.
This is why you normally see it being done with FVector(1.2, 2.2, 3.4) instead

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1 Like
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thank you so much man.even the AI couldn’t help me in this subject.