My health bar colour formula is doing my nut...

stuicy

Hey guys, noob is here again.

I have a health bar, game.health is the game attribute and max health is 10.

I made the health bar all nice, and set two rules to change the colour as the health decreases.

1) 6 to 10 health, when attribute game.health is greater than or equal to 6, change self.blue to 0, change self.green to 1, change self.red to (10-game.health)/5

2) 1 to 5 health, when attribute game.health is less than or equal to 5, change self.blue to 0, change self.red to 1, change self.green to game.health/5

Now this should work and give a smooth colour transition from 10 down to 1 health... or am I missing something?

Hope you can help, thanks.

Stu

gyroscope

@stuicy

Hi Stu, why not make it simpler and have it so green and red fade in an out over the full amount? What I mean is:

Make a boolean as a switch; make it true just after your Rule change attribute game.health, (which you surely have), so:

Change attribute game.health to game.health-1
Change attribute Switch to true

Make your Rule:
When Switch is true
----blue is already set to 0, red to 0 and green to 1
Change attribute self.Color.Red to self.Color.Red + (1 -game.health/10)
Change attribute self.Color.Green to self.Color.Green - (1-game.health/10)
Change attribute Switch to false

This is off the top of my head but should work out (providing you'll want a gradual fade in and out, that is...)

gyroscope

Glad it worked out for you! And to answer your question: the reason for the boolean "switch" is to to trigger the Rules into action each time game.health changes, otherwise it would only happen once. :-)

gyroscope

Hi Stu, try adding the Interpolate into the same Rule:

Change attribute game.health to game.health-1
Change attribute Switch to true

Make your Rule:
When Switch is true
Change attribute self.Color.Red to self.Color.Red + (1 -game.health/10)
Change attribute self.Color.Green to self.Color.Green - (1-game.health/10)
Interpolate scene.Background.Bar.Size.Width to scene.Background.Bar.Size.Width-10
Time:0.2 seconds --- or whatever you want
Change attribute Switch to false

Sorry again for being a total noob, I'll get the hang of it soon!

No worries, really, no rush! :-)

stuicy

Now that worked and is totally awesome, thanks loads for that!

I left it as two rules because I wanted yellow to be the halfway point at 5 health, which needs red and green to be at 1. So one rule 6-10 to bring the red up to 1, then a second rule from 1-5 to take the green down to 0.

Now just so I get it straight in my head, why did it only work when there was a second attribute - or switch as you said - added to the mix? Why didn't it work as it was?

I only ask because it's confusing me and I want to be able to understand as much as I can so I don't have to ask silly questions in here all the time!

Thanks again, worked a treat!

Stu

stuicy

Right the colour issue is now working fine, thanks again for that. Now to add some polish I'm trying to interpolate the health bar when health is lost (looks nicer).

But it won't work for me... my attribute game.health is decreased when two actors touch by changing attribute game.health to game.health-1. But when I use interpolate instead of change attribute, the health bar doesn't just decrease by 1 anymore, it drains completely.

Any idea where I'm going wrong? Perhaps I need to use the interpolate with the bar width instead, but that is constrained to game.health*10 (game.health starts at 10 and my bar is 100 pixels wide).

Help!

Stu

stuicy

Sorry again for being a total noob, I'll get the hang of it soon!

famekrafts

Instead of trying the color coding you can simply put the red or the health less color as a background image behind the green bar. That makes it easier. only the green bar will become smaller. You do not have to bother about the color part.

stuicy

Once again Mr. Gyro, you are the man!

Works like a dream, thanks.

3xL

@Gyroscope has been pretty in the forums lately