determine relative angle

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determine relative angle #472218 04/16/18 20:49 04/16/18 20:49
Joined: Mar 2018 Posts: 37 Blobfist OP Newbie
Blobfist OP Newbie Joined: Mar 2018 Posts: 37	I am playing around with angles and ran into a little thought error. The actual moving character is the transparent box, while the animated model is simply attached to it. The box always faces in the direction of where it is moving, while the animated character faces towards it`s enemy. The attached character should play in relation to the angle of the transparent box the correct walking animation (strafe forward, left, right, back). This is my attempt: Code: //calculate angle relation between [b]my[/b] and [b]enemy[/b] var target_ang = abs(ang(bbox.pan - my.pan)); I can correctly define when the character is facingin the same or opposite direction as the box it is attached to. Code: //if ((target_ang >= 0) && (target_ang < 45))//facing within 45 degrees the same direction //if ((target_ang >= 135) && (target_ang < 180))//facing within 45 degrees the opposite direction However, determining if it is facing to the left or the right side, does not seem to work. Code: if ((target_ang >= 45) && (target_ang < 90))//facing within 45 degrees the left if ((target_ang >= 90) && (target_ang < 135))//facing within 45 degrees the right Could anybody point out my error? Last edited by Blobfist; 04/16/18 21:29.

Re: determine relative angle [Re: Blobfist] #472227
04/17/18 11:01 04/17/18 11:01

Joined: Jun 2007
Posts: 1,337
Hiporope and its pain

txesmi

Serious User

txesmi

Serious User

Joined: Jun 2007
Posts: 1,337
Hiporope and its pain

Hi,
one problem comes from removing the sign to 'target_ang'.

Code:

var target_ang = ang(bbox.pan - my.pan);
if (abs(target_ang) < 45) { // [-45, 45]
   // front
} else if (abs(target_ang < 135) { // [-135, -45], [45, 135]
   if (target_ang > 0) { // [45, 135]
      // left
   } else { // [-135, -45]
      // right
   }
} else { // [< -135][135 >]
   // back
}

if it is only to find the correct animation you might store their names in a TEXT and find its index from the angles.

Code:

TEXT *txtAnim = { string = ("front", "left", "back", "right"); }
...
var animIndex = floor((180 + ang(bbox.pan - my.pan - 22.5)) / 90);
ent_animate(me, (txtAnim.pstring)[animIndex], ...);

Salud!

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