this post was submitted on 28 Mar 2024

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Aaargh....my eyes......my eyes...... (lemmy.world)

submitted 10 months ago by devilish666 to c/[email protected]

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[–] [email protected] 155 points 10 months ago (4 children)

public class GameManager : MonoBehaviour
{
    public bool EnableHighContrast;
    public bool PlayerWon;
    public float PlayerUnitsMoved;
    public int PlayerDeathCount;
    public float PlayerHealth;

    public void PlayerTakeDamage(float damage)
    {
        PlayerHealth -= damage;
        if (PlayerHealth < 0)
        {
            PlayerDieAndRespawn();
        }
    }

    public void PlayerDieAndRespawn()
    {
        return;
    }
}

I couldn't contain myself.

[–] [email protected] 55 points 10 months ago (5 children)

Should it be

PlayerHealth <= 0

Otherwise the player could have 0 health and not die? I’m sleep deprived so forgive me if I’m wrong

[–] [email protected] 26 points 10 months ago

Open up ticket first, please. Thanks Codemonkey.

[–] bassomitron 25 points 10 months ago (1 children)

You are correct.

[–] [email protected] 54 points 10 months ago (1 children)

Counting this meme as my first FOSS contribution

[–] SidewaysHighways 12 points 10 months ago

Holy shit I was there with you sir! With the zeros and stuff

[–] [email protected] 12 points 10 months ago* (last edited 10 months ago)

You are correct about it allowing you to have zero health and not die, but whether or not that's the correct behavior will depend on the game. Off the top of my head I know that Street Fighter, some versions at least, let you cling to life at zero.

[–] joshfaulkner 5 points 10 months ago* (last edited 10 months ago) (2 children)

I know this is /c/Progammerhumor, but I wanted to pull on this thread a little bit for my own edification. I'm a Python guy and have been a while, but I've dabbled in other languages. The screenshot says "MonoBehaviour" which makes me assume this is mono or a .Net-like language (you know what happens when you assume).

If your player health is a float, would mono or .Net have an issue comparing the float with integer zero "0"? I mean, it seems like floating point precision may make it impossible for it to ever "equal" integer zero, but it also seems like the code isn't accounting for that precision error.

Am I overthinking this?

[–] herrvogel 7 points 10 months ago (1 children)

Floating point errors are a product of how floating points work as a mathematical concept. So they're independent of the programming language and can happen everywhere.

In this case though, I doubt it's a critical issue. So the player "died" when they actually had 0.000000000027 hp left or whatever. Who cares? Do you need to be that precise?

[–] TipRing 14 points 10 months ago

Hanging on with 1.70E-31 health.

[–] [email protected] 1 points 10 months ago

As a noob in unity and programming, my understanding is that MonoBehavior only means that this script has to be attached as a component to a game object to function. And has no other meaning - but correct me if I'm wrong please.

[–] [email protected] -4 points 10 months ago

This won't work if you can ever take more than 1 damage. If you were at 1 and received 2 damage you would become invincible. You'd want to do less than or equal to.

[–] [email protected] 34 points 10 months ago (2 children)

Yay, escaped the fight with 0 health!

[–] [email protected] 15 points 10 months ago

Well if you have a "down but not dead" condition then yes, you could escape a fight with 0 health (assuming you have teammates/pawns that can save you).

[–] [email protected] 5 points 10 months ago

This is floating point. We also need to know what happens when you escape with -0.

[–] Sakychu 10 points 10 months ago (1 children)

I called the takeDamage function and my player disappeared: send 'elp everything foobar

[–] [email protected] 15 points 10 months ago (1 children)

Don't worry! this issue will be fixed in the next patch. In the meantime just try not getting hit.

[–] [email protected] 6 points 10 months ago

The doctor prescribed "getting good"

[–] Ironfacebuster 5 points 10 months ago

Too readable, please make each name a paragraph describing its function and how it relates to the other variables/functions around it