Replace virtual functions with static_cast

[ramon-bernardo]

Pull Request Prelude

• [x] I have followed proper The Forgotten Server code styling.
• [x] I have read and understood the contribution guidelines before making this PR.
• [x] I am aware that this PR may be closed if the above-mentioned criteria are not fulfilled.

Changes Proposed

• Change for static_cast on conversion is guaranteed.

[ranisalt]

You'll need to rebase and reformat the files

[Zbizu]

what is the context for this pull request? performance gain? resolving potential crashes? code cleanup?

[ranisalt]

what is the context for this pull request? performance gain? resolving potential crashes? code cleanup?

It saves one virtual function call - which cannot be inlined because the function address cannot be determined in compile time, while static_cast is free - when we are sure that the conversion is valid.

[DSpeichert]

Is this alive? Rebase needed.