Graal Forums - A problem with getangle

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A problem with getangle

Currently scripting some custom projectiles however I'm having a problem with my getangle();

PHP Code:


		
			
/*



  ** Custom Projectile Notes **

: Attributes

  - Attr 1: Base Direction

  - Attr 2: Speed Calc

  - Attr 3: P-Type, (Random, Track)

  - Attr 4: Tracking Who/Owner, (String: Npc, Player)

  - Attr 5: (Npc/Player Id

  - Attr 6: Coords of mouse click

 

: Variables

  - Speed: How fast this projectile will travel

 

*/

function onCreated() {

  canwarp();

  canwarp2();

  

  setimg("block.png");

  setTimer(0.1);

}

function onTimeout() {

  if (this.attr[3] == "random") {

    echo("Projectile: Has a randomized movement pattern.");

  }

  else if (this.attr[3] == "track") {

    temp.obj = this.attr[4] == "npc" ? this.level.npcs[this.attr[5]] : this.level.players[this.attr[5]];

    if (temp.obj.objecttype() in {"TServerPlayer", "TServerNPC"}) {

      temp.tx = temp.obj.x;

      temp.ty = temp.obj.y;

    

      this.dir = getdir((temp.tx - this.x), (temp.ty - this.y));

      this.attr[1] = getangle((temp.tx - this.x), (temp.ty - this.y));

    }

  }

  this.chat = "Direction: " @ this.dir;

  if (onwall(this.x, this.y))

    destroy();

  for (temp.pl : this.level.players) {

  }

  for (temp.nc : this.level.npcs) {

  }

  this.x += cos(this.attr[1]);

  this.y += sin(this.attr[1]);

   

  setTimer(1);

}

function onPlayerChats() {

  if (player.account in serveroptions.staffdevaccess.tokenize(",")) {

    if (player.chat == ":destroy") {

      destroy();

    }

  }

}

The major problem is where I use getangle to set this.attr[1]. It's getting the wrong angle tho that should work.

It's moving in an arc away from the player like this... _|

add(or subtract, I don't remember) pi/2 to the angle.

Neither worked Dusty. :(

PHP Code:


		
			
// for player direction
getangle(vecx(temp.obj.dir), vecy(temp.obj.dir));

// to a target
getangle((this.x - temp.tx), (this.y - temp.ty));

// to the mouse
getangle((mousex - temp.tx), (mousey - temp.ty));

Well.... to the point:

PHP Code:


		
			
getangle((temp.tx - this.x), (temp.ty - this.y));

Change it into:

PHP Code:


		
			
getangle((this.x - temp.tx), (this.y - temp.ty));

Well, Chompy what you said to do was a step in the right direction. It's just going around the player now.

Before what I originally had

PHP Code:


		
			
temp.tx - this.x

worked in another projectile test.

PHP Code:


		
			
this.x += cos(this.attr[1])*speed;

this.y += sin(this.attr[1])*speed;

Didn't work Chompy, the main problem I think is getangle() not working properly. Considering getdir() is working perfectly fine with the same calculations I had in my original post.

Problem Solved.

It was where I was calculating the this.x and this.y. I added to the y when I was supposed to be subtracting from it. =D