Align Direction

ID:157592
 
Feb 6 2010, 7:40 pm
My game uses four directions, and I am trying to make the AI line up east, west, south, or north from the enemy. I can program well, but I wont lie, i'm not the most amazing at making things like this due to complicated problem solving. Could I get some hints of procs to use? I can handle the rest.
Feb 6 2010, 9:16 pm
Are you asking for the enemy to turn the direction of the player? Or to move towards the player? Or to locate itself so many X or Y places away from player but while facing the player(like oposite direction if u get what i mean).
Feb 6 2010, 9:17 pm
dir var (atom)

Default value:
SOUTH

Possible values:
NORTH, SOUTH, EAST, WEST, NORTHEAST, NORTHWEST, SOUTHEAST, SOUTHWEST

This is the direction that the object is facing. This has little effect unless the object's icon is directional. In the case of a directional icon, this selects the corresponding orientation from the icon file.

An icon file with only four (cardinal) directions makes the choice of orientation ambiguous when the true direction is a diagonal. In that case, of the two possibilities, the one closest to the previous orientation is displayed. Sounds complicated, but it's what one would naturally expect.


Example :
   verb
      Face_North()
         usr.dir = NORTH

Feb 7 2010, 9:29 pm
In response to Darkjohn66
Okay, er

I'm asking a way so that, say the Player is one tile north, and three to the left.

I want the AI to walk north one, and face left.

But the problem is, complicated ones; like figuring out a path around a density, so they will be in a straight line from player, and face them.

More then that, they need to be perfectly north, south, west, or east. No diagonals.

Is there a pathfinding code I should know about?
Feb 7 2010, 11:24 pm
In response to Asellia
This can get rather complex quickly, but here's a simple solution to find where to go:

// Find the turf closest to us in a cardinal direction from M
var/turf/destination
var/dx = src.x-M.x
var/dy = src.y-M.y
if(abs(dx) < abs(dy))
  destination = locate(M.x, src.y, src.z)
else
  destination = locate(src.x, M.y, src.z)


From there, you can just walk to it however you wish, such as using step_to().