Game Development

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hasherr

23:00

That must be it then.

GameForm.Delta is being altered.

How do you know the rate is being dropped?

Dave

FPS : you can see the number is going down

if you stop moving your pacman does the fps go back up

hasherr

I'm not noticing it going down anymore. That could've been spontaneous with my system or something.

Dave

oh so its staying pretty consistent as you move the ghost ?

if so might of just been LICEcap

hasherr

Licecap affecting my performance? Yeah.'

Dave

if you put it at 60FPS :P

hasherr

23:03

I don't know how to limit it :/

Dave

theres an FPS box in bottom left corner you can set the FPS

hasherr

Oh, with Licecap.

Dave

yeh

hasherr

No, it was at 60

Dave

anyway - that aside theres nothing wrong in your code there ^

hasherr

23:04

Then what is causing this?

There's always a bug in the code.

Dave

does it always happen when moving to the right or in any direction

hasherr

Every direction.

Dave

does it pause every X amount of time like there is a pattern

John McDonald

I would print something every time you change one of those variables, make sure that part works 100%

(which it should)

hasherr

Seems like it.

John McDonald

23:07

So then it's delta-time related?

Dave

also how come delta is stuck at 1014 all the time?

hasherr

@Dave Probably because I'm not doing Delta right.

But I don't know how to do it in Native C#

So I just found a generic FPS clock online and used that.

It's obviously not working.

Dave

didnt icy explain that :P

Icy Defiance

appears

hasherr

jumps back, sweeps cloak

Icy Defiance

23:08

yeah it's because he's counting frames and calling it delta for some reason

hasherr

Yeah.

Icy Defiance

he doesn't actually have any delta variable

John McDonald

Oh... what?

Dave

GameForm.Delta so this is delta from last frame ?

Icy Defiance

so when it stops, delta is 1 or 2, and it speeds up because delta counts up

Dave

23:08

or that is some random number

hasherr

I don't know how to calculate frames in C#. I'm not familiar with the timing commands.

Dave

you mean frame rate?

hasherr

And Googling it is near-worthless because there's so many different ones.

Icy Defiance

delta is always at 1014 because he has the fps counter set to update and reset delta whenever delta counts to 1014

hasherr

@Dave Same thing.

Icy Defiance

23:09

it's all crazy

John McDonald

(fyi, Delta means "Change In", and in this context, it's "Change In Time" which should be the amount of time that has passed since last frame [or update])

hasherr

I understand that.

John McDonald

hasherr

I don't know what C#'s functions for timing are.

Dave

@IcyDefiance so his animation is linked to his frame rate?

John McDonald

23:09

Just making absolutely sure, :)

hasherr

@Dave It's linked to the Delta.

Which I've incorrectly calculated.

I thought it was fine until now.

Dave

so your delta should hold the time between each frame like:

frame1 | --DeltaTime -- | frame2

Icy Defiance

look at his gif, and watch when the character stops, compared to when the fps counter changes

that's when delta is being set back to 0

Dave

ah i see

Icy Defiance

then it counts up from there, 1, 2, 3, 4, etc

hasherr

23:11

I'll be back. getting food.

Matt D

23:23

morning

Jovito

@MattD 9 PM here, you must live far far away

Matt D

i live in the future

its thursday morning here

hasherr

@IcyDefiance So I do need this timing, or can I just use a constant for a speed?

Icy Defiance

you can just scrap the delta in the speed calculations. you won't maintain a constant speed that way, but it'll work.

hasherr

Okay. So should I implement timing into the game?

Matt D

23:36

remember my rant on time?

hasherr

No.

Matt D

there's two main concepts of time

hasherr

There's real time and then there's game time.

Or 'Delta'

Matt D

a) "real" time. this is the actual real world time. its what your UI, and your non -game systems run on.

b) "game" time, which is purely simulation time

yup

remember that delta is whatever you want it to be. you can slow down "time" by reducing the delta relative to "real time"

hasherr

Sure.

Matt D

23:38

good

thats an important concept a lot of people dont get :)

hasherr

Uh-huh. I'm having more trouble implementing it.

Matt D

how so

hasherr

C# has so many damn timing elements, and since I'm not using a library/framework there is no standard set to use.

^Like that

Matt D

is there some concept of a high performance, or high resolution timer?

hasherr

Q: C# + high resolution timer

I want to have a timer with about 5millisecond resolution. but the current Timer in .Net has a resolution of about 50ms. I could not find any working solution that creates a high resolution timer, although some claim that you can do it in C#. Please help

msdn.microsoft.com/en-us/library/aa964692(v=vs.85).aspx

Matt D

23:41

so, stopwatch. awesome

Grey

@MattD I used it to compare algorithm runtime.

for pathfinding.

Matt D

what you need is, for each "time". the previous time you checked it, and the new time now. the difference between the two is the "delta".

for gameTime, you could do something like gameTimeDelta = realtimeDelta * scaleFactor

hasherr

What I need is a method that gets the current second.

Matt D

why?

hasherr

But C# doesn't seem to have anythign like that, unless I used epoch, but I'd like to avoid that.

Matt D

23:43

you're going to be working in milliseconds

not seconds

hasherr

While (thisSEcond = currentSecond)
[ frame rate ++

ToddersLegrande

@hasherr does DateTime.Now not give you what you want?

hasherr

@ToddersLegrande No.

Matt D

that wont count your frame rate

ToddersLegrande

I should probably rephrase that to say "what you need"

hasherr

23:44

There's five different 'Second' variables, all associated with DateTime.

@MattD I realize that was poorly written.

Jovito

►

Matt D

just store the time at a resolution of a second

then compare it

Jovito

great music

hasherr

    if (currentSecond = Now.Second)
    {
        Delta++;
    }
    else
    {
        lastSecond = currentSecond;
        CurrentSecond = now.Second;
        Delta = 0;
    }

Something like that

But C# is sooo hard to find things I need with.

I know you guys think that Java is messy, but seriously, I have a hard time finding anything I need in C#

ToddersLegrande

Well I'm not sure you know what you need. I don't know what you think you need anyway

Mostly I just don't understand this algorithm

hasherr

23:49

Fine, then don't pay attention to my code. I need code that can calculate FPS, help me limit it to 60, and calculate Delta for me.

Matt D

nonono

delta is never 0