angles

[LiquidIce00]

Does anyone know how to get the opposite (dont know how to explain) of an angle?
Like used in pong.
But I need it in sine/cosine form (pi being the 360º angle)

[Goboom]

did you just ask *Puts lips together makes humming noise and moves finger up and down hundereds of times*?

[nyghtGT]

Originally posted by Goboom
did you just ask *Puts lips together makes humming noise and moves finger up and down hundereds of times*?

That was stupid.

[Slaktmaster]

Opposite angle = angle - pi.

[LiquidIce00]

Originally posted by Kaimetsu


Of course someone knows. What a silly question. Plus I think the word you are looking for is "radian".

I was looking at the radiant system and all that but I could not find a certain formula ..
I think I am not explaining myself well b/c in Pong the angle isnt always the opposite of what it was .. (specially when it hits the player tab thing)

btw whats getangle for?

and Slak I tried that.. not it .. hehe

[TDO2000]

hmmm I don't really know a formular for this but a way to emulate something like this is able with using vars for vertical and horizontal movement...

something like this for example:

NPC Code:

---

if(playerenters){

  this.vx=1;

  this.vy=-1;

  timeout=.05;

}



if(timeout){

  if(!onwall(x+(width/2)+this.vx+(.025*this.vx),y+height/2)){x+=this.vx;}

  else {this.vx=this.vx*(-1);}



  if(!onwall(x+(width/2),y+(height/2)+this.vy+(.025*this.vy))){y+=this.vy;}

  else {this.vy=this.vy*(-1);}



  timeout=.05;

}

---

it's like the pong ball

[LiquidIce00]

Originally posted by TDO2000
hmmm I don't really know a formular for this but a way to emulate something like this is able with using vars for vertical and horizontal movement...

something like this for example:

<code>

it's like the pong ball

yes but the problem is that always goes in a certain angle
i need mine randomized to actually fit the real reflections of the angles ..
ok im confusing myself here..

[nyghtGT]

Originally posted by LiquidIce00
Does anyone know how to get the opposite (dont know how to explain) of an angle?
Like used in pong.
But I need it in sine/cosine form (pi being the 360º angle)

I wish i could help, but I did not pay much attention in Geometry ... but remember (axa)+(bxb)=(cxc) ... I got
my forumals I could post for ya if ya want, they may help
a bit...

[LiquidIce00]

Originally posted by nyghtGT

I wish i could help, but I did not pay much attention in Geometry ... but remember (axa)+(bxb)=(cxc) ... I got
my forumals I could post for ya if ya want, they may help
a bit...

its ok
i wont bother w/ this till I come across this agn and really need it hehe

[BocoC]

Well, you could look for a Unit Circle for help. I had to use one last year in my Advanced Algebra/Trigonometry class. It is basically a circle with Radius 1 that has the Degree and Radian coordinates all along the circle. Like, 180 degrees is pi, while 90 degrees is pi/2. If you need to change degrees into radians, use this equation:
(degrees/180)*pi

[TDK_RC6]

if you would explain a little better, than i could help you, im great at mathmatics

[LiquidIce00]

Originally posted by Kaimetsu
There are a couple of simple ways to do this, but I would suggest that you use dx/dy vars as somebody said, rather than inefficiently storing and manipulating the angle.

what is getangle(dx,dy) for?

[Wes2000]

Yea, I would like to know what getangle is also

newfeatures:
- new script function getangle(dx,dy)

commands:
getangle( dx,dy ) the angle of vector (dx,dy) to the x coordinate (0...2*3.14)

That really doesnt help to much

[Faheria_GP2]

Originally posted by LiquidIce00


its ok
i wont bother w/ this till I come across this agn and really need it hehe

well, if you have an angle going / and you want it to suddenly go \ I think you would add/subtract "pi/2"

[Wes2000]

could you possibly post an example? thats the way i usually learn best.