Defcon missle system?

[Robin_Manager]

Hi everyone,

I am currently making a game called THERMO NUKER and it is layed out in the same way as a game called DEFCON. So how would you make the missle make a curve towards the target so instead of it going into a straigh line it does an arc?

Thanks,
Rob

Here is a pic of DefCon

http://img.hexus.net/v2/gaming/screenshots_pc/defcon/defcon1_large.jpg
(the arcy things)

[raytrace]

particle motion
"suvat"
s = ut + 1/2 at^2

[Random]

Now how helpful is that :confused:

The formula describes a parabolic motion. I'm actually not sure if defcon uses parabolic motion or circular motion. It's not so obvious from the screenshot.

To use this, you need to know what the variables mean:
t = time (here: how long it takes)
u = initial speed (here: launch speed)
a = constant acceleration (here: gravity)
s = distance between start and end

Then you need to know that all except for t are vectors. E.g. a could be (0.0|-1.0) and so on. Then you check all the variables that you know and hopefully you end up with only one you don't know - so you resolve the formula to that variable. In this case we know start, end and the acceleration. So if we pick a time ourselves, we can get the initial speed - by resolving to u:

u = -0.5*a*t + s/t

I made an example from the formula mentioned by raytrace: curved projectile

[Robin_Manager]

I dont need to be told about that (all the time in physics). but that example is amazing but i still am a bit wery on how to apply this into my game

Thanks,
Rob

[Random]

Sorry. I thought it was a bit over the head for the average clicker (no offense ). What's the problem with this in your game then? You say where it starts, where it ends, how long it shall take and bam you launch it.

[Robin_Manager]

HAHAHAHA, the average clicker, that made me laugh for a few seconds. FUNNY!!

really, that simple? Thanks

Rob,

PS, how to I allow multiple missles to be launched?

[Random]

Ah cmon dude :P

In line 2, (user clicks with left button) add the action "Create projectile" (somewhere out of the screen). Double click with action so you get the list of actions for that event, and move the "Create projectile" action to the top of the list.


That's it. Multiple missiles.

[Random]

Oh and, in your game you probably want to use the distance between start and end to calculate the duration for the rocket's flight.

Right now they just go faster if the target is further away.

[Robin_Manager]

Well i ask for multiple missle system because it is diffrent bases firing at diffrent targets.

Thanks
(how do you find out the distance)
Rob

PS, "o comon dude", is that sarcasm because thats a....well....um.....a little evil or something ya know

I dont wana fall out cause your cool

[Crash86]

Yeah, I wouldn't take it to heart.

I was glad of the explanation to that formula.