How do I stop a health bar going negative?

Hi!

I was following this tutorial to make a mana bar for my game, but I noticed when the hp/mana/whatever reaches a negative value, the bar goes outside the frame in the opposite direction.

I woudnt have notice this in a normal situation, but since I have an ability that will consume mana every second, I noticed once you reach 0 power, the bar keeps going in a negative value.

How could I fix this? Thank you. Appreciate a comment with a hint or tip rather than a capx I dont like copy pastes.

This is the tutorial.

https://www.scirra.com/tutorials/182/ma ... bar?page=4

Every second

mana = max(0,mana - 1)

Every second

mana = max(0,mana - 1)

Thanks for replying and helping me out.

But I think that will just fix it for that lonely event, won't really stop the bar from functioning that way. I need a bigger fix.

Do you want the mana to go negative ? Or the health, not sure what you display in the bar.

clamp(x, lower, upper) - Return lower if x is less than lower, upper if x is greater than upper, else return x.

Here, take a look at this capx. Maybe it'll help you out.

https://www.dropbox.com/s/uspynnldbvr0s ... .capx?dl=0

Do you want the mana to go negative ? Or the health, not sure what you display in the bar.

I want the bar not to grow in the opposite direction. The bar decreases it's size depending on the HP variable. If it reaches 0 it doesn't stop. If you have some event that keeps substracting HP the bar will start going in the opposite direction since it is negative value.

I don't know if I made myself clear, english ain't my mother tongue.

Here, take a look at this capx. Maybe it'll help you out.

https://www.dropbox.com/s/uspynnldbvr0s ... .capx?dl=0

Worked for me. Thanks!

No problem, glad it helped!