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[Sharp Pixel Games]

I'm trying to do a 3D monster AI, I've got two new D3D commands.

d3d_draw_spider_idle
d3d_draw_spider_walking

The only part of the AI code I've got is

if distance_to_object(obj_camera) <= 50;

How do make the AI code work if " if distance_to_object(obj_camera) <= 50; " is true then the spider will be in idle state but if False it will be walking to the player?

How do I do that.

Thanks, Sam

[johnki]

Something like this should work:

if (instance_exists(obj_camera)) {
   camera = instance_nearest(x, y, obj_camera);
   
   dist = point_distance_3d(x, y, z, camera.x, camera.y, camera.z)

   if (dist <= 50) {
      //walk to player
   }
   else {
      //do nothing
   }
}

EDIT: As per the manual, you should probably do it this way, rather than use distance_to_object() because unless your camera has a sprite or a mask, distance_to_object() will return undefined.

EDIT2: Edited because I forgot the x,y part of instance_nearest(). >.>

Edited by johnki, 12 May 2012 - 01:15 PM.