qcsrc/server/tturrets/system/system_aimprocs.qc

   1 /*
   2 * Generic aim
   3
   4 supports:
   5 TFL_AIM_NO
   6 TFL_AIM_GROUNDGROUND
   7 TFL_AIM_LEAD
   8 TFL_AIM_SHOTTIMECOMPENSATE
   9 */
  10 vector turret_stdproc_aim_generic()
  11 {
  12
  13     vector pre_pos, prep;
  14     float distance, i, mintime;
  15
  16     turret_tag_fire_update();
  17
  18     if(self.aim_flags & TFL_AIM_SIMPLE)
  19         return real_origin(self.enemy);
  20
  21         mintime = max(self.attack_finished_single - time,0) + sys_frametime;
  22
  23     // Baseline
  24     pre_pos = real_origin(self.enemy);
  25
  26     // Lead?
  27     if (self.aim_flags & TFL_AIM_LEAD)
  28     {
  29                 if (self.aim_flags & TFL_AIM_SHOTTIMECOMPENSATE)       // Need to conpensate for shot traveltime
  30                 {
  31                         // FIXME: this cant be the best way to do this..
  32                         prep = pre_pos;
  33                         float impact_time = 0;
  34                         for(i = 0; i < 4; ++i)
  35                         {
  36                                 distance = vlen(prep - self.tur_shotorg);
  37                                 impact_time = distance / self.shot_speed;
  38                                 prep = pre_pos + self.enemy.velocity * impact_time;
  39                         }
  40
  41                         prep = pre_pos + (self.enemy.velocity * (impact_time + mintime));
  42
  43                         if(self.aim_flags & TFL_AIM_ZPREDICT)
  44                         if (!(self.enemy.flags & FL_ONGROUND))
  45                         if(self.enemy.movetype == MOVETYPE_WALK || self.enemy.movetype == MOVETYPE_TOSS || self.enemy.movetype == MOVETYPE_BOUNCE)
  46                         {
  47                                 float vz;
  48                                 prep_z = pre_pos_z;
  49                                 vz = self.enemy.velocity_z;
  50                                 for(i = 0; i < impact_time; i += sys_frametime)
  51                                 {
  52                                         vz = vz - (autocvar_sv_gravity * sys_frametime);
  53                                         prep_z = prep_z + vz * sys_frametime;
  54                                 }
  55                         }
  56                         pre_pos = prep;
  57                 }
  58                 else
  59                         pre_pos = pre_pos + self.enemy.velocity * mintime;
  60     }
  61
  62     if(self.aim_flags & TFL_AIM_GROUNDGROUND)
  63     {
  64         //tracebox(pre_pos + '0 0 32',self.enemy.mins,self.enemy.maxs,pre_pos -'0 0 64',MOVE_WORLDONLY,self.enemy);
  65         traceline(pre_pos + '0 0 32',pre_pos -'0 0 64',MOVE_WORLDONLY,self.enemy);
  66         if(trace_fraction != 1.0)
  67             pre_pos = trace_endpos;
  68     }
  69
  70     return pre_pos;
  71 }