How do achievements works?

[BubbleQ]

Hey, gonna keep the question simple.

How do a achievement system works, specially the one teamfortress uses?

All I can think of that they would have used if statments, like this:

Code: Select all

if !player in air and getFrag:   {
    doUnlockAIRFRAGachievement;
    erase: doUnlockAIRFRAGachievement;
    return 1;
}

Very bad mix between python and c++, if any of them

But sins there is 379 achievements to unlock when a guy plays the game for the first time, this must be an very ineffective way?

[stoopdapoop]

can't mess with achievements unless you have steamworks access

[Gary]

AS codebase has them right?

[stoopdapoop]

OB as well, but any edits you make will be fruitless. At least as far as I understand.

[BubbleQ]

Ehh, I am not going to edit them or ad some my self whatever. This question was more theoretical pushed, as my biggest concern for a game with 300 achievements was if it would be horrible cpu intense?

[zombie@computer]

Ehh, I am not going to edit them or ad some my self whatever. This question was more theoretical pushed, as my biggest concern for a game with 300 achievements was if it would be horrible cpu intense?

c++ cant handle one million of if-statements a second.
c++ can handle hundreds of billions of if-statements a second.
Even if the code would evaluate all of those achievenents every frame, it still wouldn't hurt performance. AT ALL.

Luckily, it doesnt. Kill-achievenents only need to be evaluated after someone has been killed, for instance.