Regenerating Float Values?

[chris4268]

The title is pretty self-explanatory, how do I make a float value increase in a specified amount of time?

This is the code I made:

Code: Select all

void() Energy_Regen =
{   
   if (energy == 20)
      centerprint (self, "Max energy");
      return;
   
   if (energy != 20)
      {
         centerprint (self, "Used some energy");
         self.count = self.count + 1;
         if (self.count == 20)
         {
            energy = 20;
         }
      }
};

As you can see "energy",which is stored in defs.qc, is the float I want to regenerate.

I also tried using this:

Code: Select all

void() Energy_Regen =
{   
   if (energy == 20)
      centerprint (self, "Max energy");
      return;
   
   if (energy < 20)
      {
         centerprint (self, "Used some energy");
         self.nextthink = time + 1;
         self.think = energy + 1;
      }
};

I made a function that when it's activated, it subtracts 10 from the "energy" float with:

Code: Select all

energy = energy - 10;

Also, I added this to the "PutClientInServer" function:

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energy = 20;

And even with all of that, it just won't work!! But I've only been coding for about a week now so... halp?

[Mexicouger]

self.think && self.nextthink

[Jukki]

self.think && self.nextthink

but thouse are affected by frames...

[Mexicouger]

Create a new float:
float recharge_time;

Create a new function to regenerate energy:

Code: Select all

void() Regenerate =
{
if (energy < 20)
energy += 0.01;

recharge_time = time + 5; //energy can increase in 5 seconds
};

Goto PlayerPreThink

And add somewhere:

Code: Select all

if (recharge_time < time)
Regenerate();

code not tested, but you get the feeling. While recharge_time is less than time and energy is less than 20, add 0.01 to energy. Then after 5 seconds, add more energy.

[ceriux]

what does += mean again?

[Arkage]

its the same as writeing:
this = this + some_really_cool_number;

[frag.machine]

Beware, "+=" is not supported by all QuakeC compilers.

[chris4268]

Thanks a ton everyone, I managed to get it to work now

[GiffE]

Alternatively you can use the frametime (seconds per frame) variable and for example:

Code: Select all

self.energy + 5*frametime

This would make it regenerate at a steady pace compared to the previous "wait 5 seconds... regen a chunk"
I'd also like to point out something in your initial code, although I know you got it working.

Code: Select all

void() Energy_Regen =
{   
   if (energy == 20)
      centerprint (self, "Max energy");
      return;
   
...
};

This would return EVERY time right after the first if statement. It will never get to if(energy != 20). centerprint is nested under the if when there is no curly braces.

[Mexicouger]

self.energy + 5*frametime

Thanks for the new method of messing with time based functions

[Spike]

frametime should generally not be used unless you can guarentee a tick every frame.

which you can't always do.

[Downsider]

frametime should generally not be used unless you can guarentee a tick every frame.

which you can't always do.

I thought it helped make things framerate independent?

[Spike]

its only framerate independant if the value is correct for the total duration. if you're using a nextthink of 0.1, and the server is ticking 72 times per second, your frametime is 1/72 instead of 0.1, and thus wrong.

[Downsider]

its only framerate independant if the value is correct for the total duration. if you're using a nextthink of 0.1, and the server is ticking 72 times per second, your frametime is 1/72 instead of 0.1, and thus wrong.

Oh, I wasn't talking about using Mexicouger's method. I was talking about the normal method that GiffE refers to.

[GiffE]

frametime should generally not be used unless you can guarentee a tick every frame.

which you can't always do.

Sorry Spike, but could you elaborate? I've really only had experience using this in SP so...
For example: Say I'd want to increase energy each frame proportional to the time it took between them. This is why using frametime made sense.
If the game was run on a faster cpu the frametime would be less but the proportion would remain the same, so where's the issue?

Also I don't know if I made this clear but I'd do the increase with in the PlayerPreThink or in Startframe if I had to do it for something in the world. I would not be using nextthink at all.