data/qcsrc/server/portals.qc

   1 vector fixedvectoangles(vector v)
   2 {
   3         vector a;
   4         a = vectoangles(v);
   5         a_x = -a_x;
   6         return a;
   7 }
   8
   9 vector Portal_Transform_Apply(vector transform, vector v)
  10 {
  11         makevectors(transform);
  12         return v_forward * v_x
  13              + v_right   * v_y
  14                  + v_up      * v_z;
  15 }
  16
  17 vector Portal_Transform_Invert(vector transform)
  18 {
  19         makevectors(transform);
  20         // we want angles that turn v_forward into '1 0 0', v_right into '0 1 0' and v_up into '0 0 1'
  21         // but these are orthogonal unit vectors!
  22         // so to invert, we can simply vectoangles the TRANSPOSED matrix
  23         // TODO is this always -transform?
  24         return fixedvectoangles(
  25                 '1 0 0' * v_forward_x + '0 1 0' * v_right_x + '0 0 1' * v_up_x,
  26                 '1 0 0' * v_forward_y + '0 1 0' * v_right_y + '0 0 1' * v_up_y
  27         );
  28 }
  29
  30 vector Portal_Transform_Multiply(vector t1, vector t2)
  31 {
  32         vector vx, vy;
  33         makevectors(t2); vx = v_forward; vy = v_right;
  34         vx = Portal_Transform_Apply(t1, vx);
  35         vy = Portal_Transform_Apply(t1, vy);
  36         return fixedvectoangles(vx, vy);
  37 }
  38
  39 vector Portal_Transform_Divide(vector to_transform, vector from_transform)
  40 {
  41         return Portal_Transform_Multiply(to_transform, Portal_Transform_Invert(from_transform));
  42 }
  43
  44 void Portal_TeleportPlayer(entity teleporter, entity player)
  45 {
  46         vector to, transform;
  47         to = teleporter.velocity;
  48         transform = teleporter.mangle;
  49         TeleportPlayer(teleporter, player, to, Portal_Transform_Multiply(transform, player.angles), Portal_Transform_Apply(transform, player.velocity));
  50 }
  51
  52 float Portal_Fix(entity teleporter)
  53 {
  54         teleporter.mins = PL_MIN - '2 2 2';
  55         teleporter.maxs = PL_MAX + '2 2 2';
  56         return move_out_of_solid(teleporter);
  57 }
  58
  59 void Portal_Connect(entity teleporter, entity destination)
  60 {
  61         teleporter.mangle = Portal_Transform_Divide(-(destination.angles), teleporter.angles);
  62         teleporter.touch = Portal_Touch;
  63         teleporter.cnt = 0;
  64         destination.touch = SUB_Null;
  65         destination.cnt = 1;
  66 }
  67
  68 entity Portal_Spawn(entity own, vector org, vector ang)
  69 {
  70         entity portal;
  71         portal = spawn();
  72         portal.classname = "portal";
  73         portal.owner = own;
  74         portal.origin = org;
  75         portal.angles = ang;
  76         setmodel(portal, ...);
  77 }