Q3 jumppad

[lukas2288]

Hello qc guys,
when you load a q3 map in darkplaces with jumppads (q3dm17 for example)you can move on air but in q3 engine you cannot.Is there some way how to fix it in quake1 trigger_push?
________
NARUTO ADVICE

[Spike]

set the player's teleport_time field.
This field is meant to prevent the player from changing their velocity for a period of time. But you will need to calculate when the player will land.


Actually, in Q3 you can change your velocity. The issue is that in Q1 if you try accelerating contrary to your current velocity you stop very fast, while in q3 you keep your speed but slowly change direction.

[SpannA]

This is my Quake3 mod it has jumppads in it
viewtopic.php?t=1384

and the source is with it . good luck

[Scrama]

I try to improve trigger_push to save direction of player movement.
Original code (triggers.qc\trigger_push_touch) looks like

Code: Select all

other.velocity = self.speed * self.movedir * 10;

I've added 1/10 of old entity velocity

Code: Select all

other.velocity = other.velocity * 0.1 + self.speed * self.movedir * 10;

but in game it kicks me up only for a half of height. My 'debug' code now looks like

Code: Select all

      //   scrama: save direction
      bprint("velocity ");
      bprint(vtos(other.velocity));

      vel1 = other.velocity * 0.1;
      bprint(" -> ");
      bprint(vtos(vel1));

      vel2 = self.speed * self.movedir * 10;
      bprint(" \n ");
      bprint(vtos(vel2));

      other.velocity = vel1 + vel2;
      bprint(" \nresults  ");
      bprint(vtos(other.velocity));
      bprint("\n");


And all vectors are fine:

velocity '320.0 23.1 0.0' -> '32.0 2.3 0.0'
'0.0 0.0 1070'
results '32.0 2.3 1070'

WTF and what to do?

Also, I've changed SetMoveDir as

Code: Select all

void() SetMovedir =
{
   local vector   org;
   local entity   t;
   
   if ((self.classname == "trigger_push")&&(self.target))
   {
      t = find (world, targetname, self.target);
      if (t)
         {
            org = self.mins + self.size * 0.5;
            org = normalize(t.origin - org);
            self.movedir = org;
            return;
         }
   }
   if (self.angles == '0 -1 0')
      self.movedir = '0 0 1';
   else if (self.angles == '0 -2 0')
      self.movedir = '0 0 -1';
   else
   {
      makevectors (self.angles);
      self.movedir = v_forward;
   }
   
   self.angles = '0 0 0';
};

But it works only in new maps, of couse...

[Spike]

Q3 jumppads are coded such that the player will stike the targetted point.
This means that you need to consider gravity and its affect over the duration needed to get from a to b.
I don't know the required formula, but that's what your code lacks.