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g_tracktrain.c
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g_tracktrain.c
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/*
Copyright (C) 1997-2001 Id Software, Inc.
Copyright (C) 2000-2002 Mr. Hyde and Mad Dog
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "g_local.h"
#define RFAST -3
#define RMEDIUM -2
#define RSLOW -1
#define STOP 0
#define SLOW 1
#define MEDIUM 2
#define FAST 3
// func_tracktrain spawnflags
#define SF_TRACKTRAIN_NOPITCH 0x0001 // yaw only (maybe roll)
#define SF_TRACKTRAIN_NOCONTROL 0x0002 // no player control
#define SF_TRACKTRAIN_ONEWAY 0x0004 // cannot back up
#define SF_TRACKTRAIN_OTHERMAP 0x0008 // "parent" train resides in another map
#define SF_TRACKTRAIN_NOHUD 0x0010 // do not display speed on HUD
#define SF_TRACKTRAIN_INDICATOR 0x0020 // train has an animated speed indicator
#define SF_TRACKTRAIN_ANIMATED 0x0040 // normal animation
#define SF_TRACKTRAIN_STARTOFF 0x0080 // starts disabled
#define SF_TRACKTRAIN_DISABLED 0x1000 // internal use only
#define SF_TRACKTRAIN_ROLLSPEED 0x2000 // internal use only - roll is a function of speed
#define SF_TRACKTRAIN_SLOWSTOP 0x4000 // internal use only - train slows to stop after driver death
#define SF_TRACKTRAIN_ANIMMASK (SF_TRACKTRAIN_INDICATOR | SF_TRACKTRAIN_ANIMATED)
// path_track spawnflags
#define SF_PATH_ALTPATH 0x0001 // branch point
#define SF_PATH_DISABLED 0x0002
#define SF_PATH_FIREONCE 0x0004 // pathtarget fired only once
#define SF_PATH_DISABLE_TRAIN 0x0008 // player loses control of train
#define SF_PATH_ABS_SPEED 0x0010 // speed modifier is absolute rather than a multiplier
void tracktrain_next (edict_t *self);
void tracktrain_reach_dest (edict_t *self);
/*=============================================================================
Utility functions shamelessly ripped from HL source
===============================================================================*/
float UTIL_AngleMod(float a)
{
if (a < 0)
{
a = a + 360 * ((int)(a / 360) + 1);
}
else if (a >= 360)
{
a = a - 360 * ((int)(a / 360));
}
// a = (360.0/65536) * ((int)(a*(65536/360.0)) & 65535);
return a;
}
float UTIL_ApproachAngle( float target, float value, float speed )
{
float delta;
target = UTIL_AngleMod( target );
value = UTIL_AngleMod( target );
delta = target - value;
// Speed is assumed to be positive
if ( speed < 0 )
speed = -speed;
if ( delta < -180 )
delta += 360;
else if ( delta > 180 )
delta -= 360;
if ( delta > speed )
value += speed;
else if ( delta < -speed )
value -= speed;
else
value = target;
return value;
}
float UTIL_AngleDistance( float next, float cur )
{
float delta = next - cur;
if ( delta < -180 )
delta += 360;
else if ( delta > 180 )
delta -= 360;
return delta;
}
/*=============================================================================
PATH_TRACK
target: next path_track
target2: alternate path
speed: new tracktrain speed
pathtarget: entity to trigger when touched
deathtarget: entity to trigger at dead end
==============================================================================*/
void path_track_use (edict_t *self, edict_t *other, edict_t *activator)
{
char *temp;
if(self->spawnflags & SF_PATH_ALTPATH)
{
temp = self->target;
self->target = self->target2;
self->target2 = temp;
}
else
{
// toggle enabled/disabled
self->spawnflags ^= SF_PATH_DISABLED;
}
}
void SP_path_track (edict_t *self)
{
if (!self->targetname)
{
gi.dprintf ("%s with no targetname at %s\n", self->classname,vtos(self->s.origin));
G_FreeEdict (self);
return;
}
self->class_id = ENTITY_PATH_TRACK;
self->solid = SOLID_TRIGGER;
self->use = path_track_use;
VectorSet (self->mins, -8, -8, -8);
VectorSet (self->maxs, 8, 8, 8);
self->svflags |= SVF_NOCLIENT;
if(!self->count) self->count = -1;
gi.linkentity (self);
}
/* ============================================================
FUNC_TRACKCHANGE
height = Travel altitude (viewheight)
distance = Rotation amount, degrees (moveinfo.distance)
target = Name of train
pathtarget = Top path_track
combattarget = Bottom path_track
speed = Move/Rotate speed
"sounds"
0,1 default
2-99 custom sound- e.g. plats/pt02_strt.wav, plats/pt02_mid.wav, plats/pt02_end.wav
=============================================================*/
#define STATE_TOP 0
#define STATE_MOVEDOWN 1
#define STATE_BOTTOM 2
#define STATE_MOVEUP 3
#define SF_TRACK_ACTIVATETRAIN 0x0001
#define SF_TRACK_STARTBOTTOM 0x0008
#define SF_TRACK_XAXIS 0x0040
#define SF_TRACK_YAXIS 0x0080
void trackchange_done (edict_t *self)
{
edict_t *train = self->target_ent;
VectorClear(self->velocity);
VectorClear(self->avelocity);
if (self->s.sound && self->moveinfo.sound_end)
gi.positioned_sound (self->s.origin, self, CHAN_AUTO, self->moveinfo.sound_end, 1, self->attenuation, 0); // was ATTN_NORM
self->s.sound = 0;
if(train)
{
VectorClear(train->velocity);
VectorClear(train->avelocity);
train->spawnflags &= ~SF_TRACKTRAIN_DISABLED;
if(self->spawnflags & SF_TRACK_ACTIVATETRAIN)
{
train->moveinfo.state = train->moveinfo.prevstate;
if(train->moveinfo.state && (train->sounds > 0)) {
train->s.sound = gi.soundindex(va("%sspeed%d.wav",train->source,abs(train->moveinfo.state)));
#ifdef LOOP_SOUND_ATTENUATION
train->s.attenuation = train->attenuation;
#endif
}
train->moveinfo.next_speed = train->moveinfo.state * train->moveinfo.speed/3;
}
else
{ // A little redundant, but clear
train->moveinfo.state = STOP;
train->moveinfo.next_speed = 0;
}
if(self->moveinfo.state == STATE_MOVEUP)
train->target = self->pathtarget;
else
train->target = self->combattarget;
train->target_ent = G_PickTarget(train->target);
// If map is constructed properly, train
// SHOULD be at the target path_track now. But
// physics may have caused lift to outrun train,
// so force it:
VectorCopy(train->target_ent->s.origin,train->s.origin);
train->s.origin[2] += train->viewheight;
gi.linkentity(train);
tracktrain_next(train);
}
if(self->moveinfo.state == STATE_MOVEDOWN)
self->moveinfo.state = STATE_BOTTOM;
else
self->moveinfo.state = STATE_TOP;
gi.linkentity(self);
}
void trackchange_use (edict_t *self, edict_t *other, edict_t *activator)
{
float time, tt, tr;
float tspeed, rspeed;
if((self->moveinfo.state != STATE_TOP) && (self->moveinfo.state != STATE_BOTTOM))
{
// already moving
return;
}
if(self->target)
{
edict_t *track;
self->target_ent = G_PickTarget(self->target);
if(self->target_ent)
{
// Make sure this sucker is at the path_track it's supposed to
// be at
if(self->moveinfo.state == STATE_BOTTOM)
track = G_PickTarget(self->combattarget);
else
track = G_PickTarget(self->pathtarget);
if(!track || (self->target_ent->target_ent != track))
self->target_ent = NULL;
else
{
vec3_t v;
VectorSubtract(track->s.origin,self->target_ent->s.origin,v);
if(VectorLength(v) > self->target_ent->moveinfo.distance)
self->target_ent = NULL;
}
}
}
else
self->target_ent = NULL;
if(self->target_ent)
self->target_ent->s.sound = 0;
// Adjust speed so that "distance" rotation and "height" movement are achieved
// simultaneously.
tt = abs(self->viewheight) / self->speed;
tr = fabs(self->moveinfo.distance) / self->speed;
time = max(tt,tr);
time = 0.1 * ((int)(10.*time-0.5)+1);
tspeed = -self->viewheight / time;
rspeed = self->moveinfo.distance / time;
if(self->moveinfo.state == STATE_BOTTOM)
{
tspeed = -tspeed;
rspeed = -rspeed;
}
VectorClear(self->velocity);
VectorClear(self->avelocity);
if (self->spawnflags & SF_TRACK_XAXIS)
self->velocity[0] = tspeed;
else if (self->spawnflags & SF_TRACK_YAXIS)
self->velocity[1] = tspeed;
else
self->velocity[2] = tspeed;
VectorScale(self->movedir,rspeed,self->avelocity);
if(self->target_ent)
{
VectorCopy(self->velocity,self->target_ent->velocity);
VectorCopy(self->avelocity,self->target_ent->avelocity);
self->target_ent->spawnflags |= SF_TRACKTRAIN_DISABLED;
gi.linkentity(self->target_ent);
}
if(self->moveinfo.state == STATE_TOP)
self->moveinfo.state = STATE_MOVEDOWN;
else
self->moveinfo.state = STATE_MOVEUP;
if (self->moveinfo.sound_start)
gi.positioned_sound (self->s.origin, self, CHAN_AUTO, self->moveinfo.sound_start, 1, self->attenuation, 0); // was ATTN_NORM
self->s.sound = self->moveinfo.sound_middle;
#ifdef LOOP_SOUND_ATTENUATION
self->s.attenuation = self->attenuation;
#endif
self->think = trackchange_done;
self->nextthink = level.time + time;
gi.linkentity(self);
}
void SP_func_trackchange (edict_t *self)
{
self->class_id = ENTITY_FUNC_TRACKCHANGE;
self->movetype = MOVETYPE_PUSH;
VectorClear (self->s.angles);
// set the axis of rotation
VectorClear(self->movedir);
if (self->spawnflags & SF_TRACK_XAXIS)
self->movedir[2] = 1.0;
else if (self->spawnflags & SF_TRACK_YAXIS)
self->movedir[0] = 1.0;
else // Z_AXIS
self->movedir[1] = 1.0;
// Rotation
self->moveinfo.distance = st.distance;
// Travel height
self->viewheight = st.height;
// Max rotation/translation speed
if(!self->speed)
self->speed = 100;
VectorCopy(self->s.origin,self->pos1);
VectorCopy(self->pos1,self->pos2);
if (self->spawnflags & SF_TRACK_XAXIS)
self->pos2[0] -= self->viewheight;
else if (self->spawnflags & SF_TRACK_YAXIS)
self->pos2[1] -= self->viewheight;
else
self->pos2[2] -= self->viewheight;
self->solid = SOLID_BSP;
gi.setmodel (self, self->model);
self->use = trackchange_use;
// bottom starters:
if(self->spawnflags & SF_TRACK_STARTBOTTOM)
{
vec3_t temp;
VectorCopy(self->pos1,temp);
VectorCopy(self->pos2,self->pos1);
VectorCopy(temp,self->pos2);
VectorCopy(self->pos1,self->s.origin);
VectorMA(self->s.angles,self->moveinfo.distance,self->movedir,self->s.angles);
self->moveinfo.state = STATE_BOTTOM;
}
else
self->moveinfo.state = STATE_TOP;
if (self->sounds > 1 && self->sounds < 100) // custom sounds
{
self->moveinfo.sound_start = gi.soundindex (va("plats/pt%02i_strt.wav", self->sounds));
self->moveinfo.sound_middle = gi.soundindex (va("plats/pt%02i_mid.wav", self->sounds));
self->moveinfo.sound_end = gi.soundindex (va("plats/pt%02i_end.wav", self->sounds));
}
else
{
self->moveinfo.sound_start = gi.soundindex ("plats/pt1_strt.wav");
self->moveinfo.sound_middle = gi.soundindex ("plats/pt1_mid.wav");
self->moveinfo.sound_end = gi.soundindex ("plats/pt1_end.wav");
}
if (self->attenuation <= 0)
self->attenuation = ATTN_IDLE;
gi.linkentity(self);
}
/*=====================================================================================
func_tracktrain
target first path_track stop
dmg damage applied to blocker
speed max. speed, default=64
sounds currently unused
distance wheelbase, determines turn rate. default=50
height height of origin above path_tracks, default=4
roll roll angle while turning, default=0
*/
void tracktrain_think (edict_t *self);
void tracktrain_drive (edict_t *train, edict_t *other )
{
vec3_t angles, offset;
vec3_t f1, l1, u1;
vec3_t forward, left;
if (!(other->svflags & SVF_MONSTER))
return;
if(train->spawnflags & (SF_TRACKTRAIN_NOCONTROL | SF_TRACKTRAIN_STARTOFF))
return;
// See if monster is in driving position
VectorCopy(train->s.angles,angles);
VectorNegate(angles,angles);
AngleVectors(angles,f1,l1,u1);
VectorSubtract(other->s.origin,train->s.origin,offset);
VectorScale(f1, offset[0],f1);
VectorScale(l1,-offset[1],l1);
VectorScale(u1, offset[2],u1);
VectorCopy(f1,offset);
VectorAdd(offset,l1,offset);
VectorAdd(offset,u1,offset);
// Relax the constraints on driving position just a bit for monsters
if(offset[0] < train->bleft[0] - 16)
return;
if(offset[1] < train->bleft[1] - 16)
return;
if(offset[2] < train->bleft[2] - 16)
return;
if(offset[0] > train->tright[0] + 16)
return;
if(offset[1] > train->tright[1] + 16)
return;
if(offset[2] > train->tright[2] + 16)
return;
train->owner = other;
other->vehicle = train;
// Store the offset and later keep driver at same relative position
// (with height adjustments for pitch)
AngleVectors(train->s.angles, forward, left, NULL);
VectorSubtract(other->s.origin,train->s.origin,train->offset);
VectorScale(forward,train->offset[0],f1);
VectorScale(left,train->offset[1],l1);
VectorCopy(f1,train->offset);
VectorAdd(train->offset,l1,train->offset);
train->offset[1] = -train->offset[1];
train->offset[2] = other->s.origin[2] - train->s.origin[2];
gi.linkentity(other);
gi.linkentity(train);
other->monsterinfo.pausetime = level.time + 100000000;
other->monsterinfo.aiflags |= AI_STAND_GROUND;
other->monsterinfo.stand (other);
train->moveinfo.state = FAST;
train->moveinfo.next_speed = train->moveinfo.speed;
if(train->sounds) {
train->s.sound = gi.soundindex(va("%sspeed%d.wav",train->source,abs(train->moveinfo.state)));
#ifdef LOOP_SOUND_ATTENUATION
train->s.attenuation = train->attenuation;
#endif
}
else
train->s.sound = 0;
train->think = tracktrain_think;
train->think(train);
}
void tracktrain_die (edict_t *self, edict_t *inflictor, edict_t *attacker, int damage, vec3_t point)
{
if(self->deathtarget)
{
self->target = self->deathtarget;
G_UseTargets (self, attacker);
}
BecomeExplosion1 (self);
}
void tracktrain_disengage (edict_t *train)
{
edict_t *driver;
driver = train->owner;
if(!driver) return;
if(driver->client)
{
vec3_t forward, left, up, f1, l1, u1;
driver->movetype = MOVETYPE_WALK;
AngleVectors(train->s.angles, forward, left, up);
VectorScale(forward,train->offset[0],f1);
VectorScale(left,-train->offset[1],l1);
VectorScale(up,train->offset[2],u1);
VectorAdd(train->s.origin,f1,driver->s.origin);
VectorAdd(driver->s.origin,l1,driver->s.origin);
VectorAdd(driver->s.origin,u1,driver->s.origin);
driver->s.origin[2] += 16 * ( fabs(up[0]) + fabs(up[1]) );
VectorCopy(train->velocity,driver->velocity);
driver->client->vehicle_framenum = level.framenum;
// turn ON client side prediction for this player
driver->client->ps.pmove.pm_flags &= ~PMF_NO_PREDICTION;
}
else
{
if(train->moveinfo.state != STOP)
{
train->spawnflags |= SF_TRACKTRAIN_SLOWSTOP;
train->moveinfo.state = STOP;
train->moveinfo.next_speed = 0;
train->s.sound = gi.soundindex(va("%sspeed1.wav",train->source));
#ifdef LOOP_SOUND_ATTENUATION
train->s.attenuation = train->attenuation;
#endif
}
driver->movetype = MOVETYPE_STEP;
if(driver->health > 0)
VectorCopy(train->velocity,driver->velocity);
else
VectorClear(driver->velocity);
driver->monsterinfo.pausetime = 0;
driver->monsterinfo.aiflags &= ~AI_STAND_GROUND;
}
gi.linkentity (driver);
train->owner = NULL;
driver->vehicle = NULL;
}
void tracktrain_hide (edict_t *self)
{
self->solid = SOLID_NOT;
self->svflags |= SVF_NOCLIENT;
gi.linkentity(self);
}
void tracktrain_think (edict_t *self)
{
float distance, speed, time = 0.0;
float yaw, pitch;
vec3_t forward, left, up, f1, l1, u1, v;
int i;
edict_t *ent;
if(self->spawnflags & SF_TRACKTRAIN_OTHERMAP)
{
if( (self->spawnflags & SF_TRACKTRAIN_INDICATOR) && !(self->spawnflags & SF_TRACKTRAIN_ANIMATED))
self->s.frame = 6;
else
self->s.effects &= ~(EF_ANIM_ALL | EF_ANIM_ALLFAST);
self->spawnflags |= SF_TRACKTRAIN_DISABLED;
self->think = tracktrain_hide;
self->nextthink = level.time + FRAMETIME;
VectorClear(self->velocity);
VectorClear(self->avelocity);
self->moveinfo.state = self->moveinfo.prevstate = STOP;
self->s.sound = 0;
self->moveinfo.current_speed = 0;
self->owner = NULL;
gi.linkentity(self);
return;
}
self->nextthink = level.time + FRAMETIME;
if(!self->owner && (self->spawnflags & SF_TRACKTRAIN_DISABLED))
return;
if(self->spawnflags & SF_TRACKTRAIN_ANIMATED)
{
if(self->moveinfo.state)
{
if(self->spawnflags & SF_TRACKTRAIN_INDICATOR)
self->s.effects |= EF_ANIM_ALLFAST;
else
self->s.effects |= EF_ANIM_ALL;
}
else
self->s.effects &= ~(EF_ANIM_ALL | EF_ANIM_ALLFAST);
}
else if(self->spawnflags & SF_TRACKTRAIN_INDICATOR)
{
if((self->moveinfo.state == STOP) && !self->owner)
{
if(self->spawnflags & SF_TRACKTRAIN_STARTOFF)
self->s.frame = 14;
else
self->s.frame = 6;
}
else if((level.framenum % 5) == 0)
self->s.frame = (self->moveinfo.state - RFAST)*2 + (1 - (self->s.frame % 2));
}
AngleVectors(self->s.angles, forward, left, up);
if(!(self->spawnflags & SF_TRACKTRAIN_DISABLED))
{
VectorCopy(self->velocity,v);
speed = VectorLength(v);
if(self->moveinfo.state < STOP)
speed = -speed;
self->moveinfo.current_speed = speed;
if(self->moveinfo.state != STOP)
self->moveinfo.prevstate = self->moveinfo.state;
}
if (self->owner)
{
edict_t *driver = self->owner;
// ... then we have a driver
if ((driver->health <= 0) || (driver->movetype == MOVETYPE_NOCLIP))
{
tracktrain_disengage(self);
return;
}
if (driver->client)
{
if (driver->client->use)
{
// if he's pressing the use key, and he didn't just
// get on or off, disengage
if(level.framenum - driver->client->vehicle_framenum > 2)
{
VectorCopy(self->velocity,driver->velocity);
tracktrain_disengage(self);
return;
}
}
if ( (driver->client->ucmd.sidemove < -199) || (driver->client->ucmd.sidemove > 199) || (driver->client->ucmd.upmove > 0) )
{
VectorCopy(self->velocity,driver->velocity);
tracktrain_disengage(self);
return;
}
}
if (!(self->spawnflags & SF_TRACKTRAIN_DISABLED))
{
if (driver->client)
{
if ((driver->client->ucmd.forwardmove > -199) && (driver->client->ucmd.forwardmove < 199))
self->moveinfo.wait = 0;
else if(!self->moveinfo.wait)
{
if(driver->client->ucmd.forwardmove > 0)
{
if(self->moveinfo.state < FAST)
{
self->moveinfo.state++;
self->moveinfo.next_speed = self->moveinfo.state * self->moveinfo.speed/3;
self->moveinfo.wait = 1;
if((self->spawnflags & SF_TRACKTRAIN_ANIMMASK) == SF_TRACKTRAIN_INDICATOR)
self->s.frame = (self->moveinfo.state - RFAST)*2 + (1 - (self->s.frame % 2));
if(self->moveinfo.state && (self->sounds > 0)) {
self->s.sound = gi.soundindex(va("%sspeed%d.wav",self->source,abs(self->moveinfo.state)));
#ifdef LOOP_SOUND_ATTENUATION
self->s.attenuation = self->attenuation;
#endif
}
else
self->s.sound = 0;
}
}
else
{
if( (self->moveinfo.state > STOP) ||
((self->moveinfo.state > RFAST) && !(self->spawnflags & SF_TRACKTRAIN_ONEWAY)))
{
self->moveinfo.state--;
self->moveinfo.next_speed = self->moveinfo.state * self->moveinfo.speed/3;
self->moveinfo.wait = 1;
if((self->spawnflags & SF_TRACKTRAIN_ANIMMASK) == SF_TRACKTRAIN_INDICATOR)
self->s.frame = (self->moveinfo.state - RFAST)*2 + (1 - (self->s.frame % 2));
if(self->moveinfo.state && (self->sounds > 0)) {
self->s.sound = gi.soundindex(va("%sspeed%d.wav",self->source,abs(self->moveinfo.state)));
#ifdef LOOP_SOUND_ATTENUATION
self->s.attenuation = self->attenuation;
#endif
}
else
self->s.sound = 0;
}
}
}
}
else
{
// Driver is monster.
if(driver->enemy && driver->enemy->inuse)
{
qboolean vis;
vis = visible(driver,driver->enemy);
if(vis)
self->monsterinfo.search_time = 0;
if(self->monsterinfo.search_time == 0)
{
float dot, r;
vec3_t vec;
if(vis)
VectorSubtract(driver->enemy->s.origin,driver->s.origin,vec);
else
VectorSubtract(driver->monsterinfo.last_sighting,driver->s.origin,vec);
r = VectorNormalize(vec);
dot = DotProduct(vec,forward);
if((r > 2000) && (dot < 0))
{
self->moveinfo.state = -self->moveinfo.state;
self->moveinfo.next_speed = self->moveinfo.state * self->moveinfo.speed/3;
self->monsterinfo.search_time = level.time;
tracktrain_next(self);
return;
}
}
}
}
// Check for change in direction
if( self->moveinfo.prevstate < STOP && self->moveinfo.state > STOP )
{
self->moveinfo.prevstate = self->moveinfo.state;
tracktrain_next(self);
return;
}
else if(self->moveinfo.prevstate > STOP && self->moveinfo.state < STOP)
{
self->moveinfo.prevstate = self->moveinfo.state;
tracktrain_next(self);
return;
}
if(self->moveinfo.current_speed < self->moveinfo.next_speed)
{
speed = self->moveinfo.current_speed + self->moveinfo.accel/10;
if(speed > self->moveinfo.next_speed) speed = self->moveinfo.next_speed;
}
else if(self->moveinfo.current_speed > self->moveinfo.next_speed)
{
speed = self->moveinfo.current_speed - self->moveinfo.decel/10;
if(speed < self->moveinfo.next_speed) speed = self->moveinfo.next_speed;
}
VectorSubtract(self->moveinfo.end_origin,self->s.origin,v);
distance = VectorLength(v);
if(speed != 0)
{
time = distance/fabs(speed);
time = 0.1 * ((int)(10*time - 0.5)+1);
if( (time > 0) && (distance > 0) )
speed = distance/time;
}
else
time = 100000;
VectorNormalize(v);
VectorScale(v,fabs(speed),self->velocity);
// gi.dprintf("distance to %s=%g, time=%g\n",
// self->target_ent->targetname,distance,time);
gi.linkentity(self);
}
// Set driver velocity, position, and angles
VectorCopy(self->velocity,driver->velocity);
VectorScale(forward,self->offset[0],f1);
VectorScale(left,-self->offset[1],l1);
VectorScale(up,self->offset[2],u1);
VectorAdd(self->s.origin,f1,driver->s.origin);
VectorAdd(driver->s.origin,l1,driver->s.origin);
VectorAdd(driver->s.origin,u1,driver->s.origin);
driver->s.origin[2] += 16 * ( fabs(up[0]) + fabs(up[1]) );
yaw = self->avelocity[YAW]*FRAMETIME;
if(yaw != 0)
{
driver->s.angles[YAW] += yaw;
if(driver->client)
{
driver->client->ps.pmove.delta_angles[YAW] += ANGLE2SHORT(yaw);
driver->client->ps.viewangles[YAW] += yaw;
}
}
pitch = self->avelocity[PITCH]*FRAMETIME;
if(pitch != 0)
{
float delta_yaw;
delta_yaw = driver->s.angles[YAW] - self->s.angles[YAW];
delta_yaw *= M_PI / 180.;
pitch *= cos(delta_yaw);
if(driver->client)
{
driver->client->ps.pmove.delta_angles[PITCH] += ANGLE2SHORT(pitch);
driver->client->ps.viewangles[PITCH] += pitch;
}
}
if((self->moveinfo.state != STOP) || (yaw != 0) || (pitch != 0))
if(driver->client)
driver->client->ps.pmove.pm_type = PM_FREEZE;
gi.linkentity(driver);
}
else if(self->spawnflags & (SF_TRACKTRAIN_NOCONTROL | SF_TRACKTRAIN_STARTOFF))
{
// No driver, either can't be controlled or is "off"
if (!(self->spawnflags & SF_TRACKTRAIN_DISABLED))
{
self->moveinfo.next_speed = self->moveinfo.state * self->moveinfo.speed/3;
if(self->moveinfo.current_speed < self->moveinfo.next_speed)
{
speed = self->moveinfo.current_speed + self->moveinfo.accel/10;
if(speed > self->moveinfo.next_speed) speed = self->moveinfo.next_speed;
}
else if(self->moveinfo.current_speed > self->moveinfo.next_speed)
{
speed = self->moveinfo.current_speed - self->moveinfo.decel/10;
if(speed < self->moveinfo.next_speed) speed = self->moveinfo.next_speed;
}
if(speed != 0)
{
VectorSubtract(self->moveinfo.end_origin,self->s.origin,v);
distance = VectorLength(v);
time = distance/fabs(speed);
time = 0.1 * ((int)(10*time - 0.5)+1);
if( (time > 0) && (distance > 0) )
speed = distance/time;
VectorNormalize(v);
VectorScale(v,fabs(speed),self->velocity);
gi.linkentity(self);
}
if( !(self->spawnflags & SF_TRACKTRAIN_NOCONTROL) &&
(self->spawnflags & SF_TRACKTRAIN_STARTOFF) &&
self->viewmessage )
{
vec3_t angles, offset;
// Check for player entering bleft/tright field of train
VectorCopy(self->s.angles,angles);
VectorNegate(angles,angles);
AngleVectors(angles,f1,l1,u1);
for (i=1, ent=&g_edicts[1] ; i<=maxclients->value ; i++, ent++)
{
if (!ent->inuse) continue;
if (ent->movetype == MOVETYPE_NOCLIP) continue;
VectorSubtract(ent->s.origin,self->s.origin,offset);
VectorScale(f1, offset[0],f1);
VectorScale(l1,-offset[1],l1);
VectorScale(u1, offset[2],u1);
VectorCopy(f1,offset);
VectorAdd(offset,l1,offset);
VectorAdd(offset,u1,offset);
if(offset[0] < self->bleft[0])
continue;
if(offset[1] < self->bleft[1])
continue;
if(offset[2] < self->bleft[2])
continue;
if(offset[0] > self->tright[0])
continue;
if(offset[1] > self->tright[1])
continue;
if(offset[2] > self->tright[2])
continue;
safe_centerprintf(ent,"%s",self->viewmessage);
self->viewmessage = NULL;
}
}
if(!speed)
{
if(self->viewmessage)
time = 100000;
else
{
VectorClear(self->avelocity);
VectorClear(self->avelocity);
self->nextthink = 0;
if(self->movewith_next && (self->movewith_next->movewith_ent == self))
set_child_movement(self);
gi.linkentity(self);
return;
}
}
}
}
else
{
//
// No driver, CAN be controlled and isn't currently turned off
//
self->moveinfo.next_speed = self->moveinfo.state * self->moveinfo.speed/3;
if(self->moveinfo.current_speed < self->moveinfo.next_speed)
{
if(self->spawnflags & SF_TRACKTRAIN_SLOWSTOP)
speed = self->moveinfo.current_speed + self->moveinfo.accel/25;
else
speed = self->moveinfo.current_speed + self->moveinfo.accel/10;
if(speed > self->moveinfo.next_speed) speed = self->moveinfo.next_speed;
}
else if(self->moveinfo.current_speed > self->moveinfo.next_speed)
{
if(self->spawnflags & SF_TRACKTRAIN_SLOWSTOP)
speed = self->moveinfo.current_speed - self->moveinfo.decel/25;
else
speed = self->moveinfo.current_speed - self->moveinfo.decel/10;
if(speed < self->moveinfo.next_speed) speed = self->moveinfo.next_speed;
}
if( speed != 0 )
{
VectorSubtract(self->moveinfo.end_origin,self->s.origin,v);
distance = VectorNormalize(v);
time = distance/fabs(speed);
time = 0.1 * ((int)(10*time - 0.5)+1);
if( (time > 0) && (distance > 0) )
speed = distance/time;
VectorScale(v,fabs(speed),self->velocity);
gi.linkentity(self);
}
else if(self->moveinfo.current_speed != 0)
{
VectorClear(self->velocity);
self->s.sound = 0;
gi.linkentity(self);
time = 100000;
}
else
{
self->spawnflags &= ~SF_TRACKTRAIN_SLOWSTOP;
time = 100000;
}
if(!(self->spawnflags & SF_TRACKTRAIN_NOCONTROL))
{
vec3_t angles, offset;
// Check if a player is in driving position (monsters handled elsewhere)
VectorCopy(self->s.angles,angles);
VectorNegate(angles,angles);
AngleVectors(angles,f1,l1,u1);
// find a player
for (i=1, ent=&g_edicts[1] ; i<=maxclients->value ; i++, ent++) {
if (!ent->inuse) continue;
if (ent->movetype == MOVETYPE_NOCLIP) continue;
if (!ent->client->use && !self->message) continue;
if (level.framenum - ent->client->vehicle_framenum <= 2) continue;
VectorSubtract(ent->s.origin,self->s.origin,offset);
VectorScale(f1, offset[0],f1);
VectorScale(l1,-offset[1],l1);
VectorScale(u1, offset[2],u1);
VectorCopy(f1,offset);
VectorAdd(offset,l1,offset);
VectorAdd(offset,u1,offset);
// gi.dprintf("offset=%g %g %g\n",offset[0],offset[1],offset[2]);
if(offset[0] < self->bleft[0])
continue;
if(offset[1] < self->bleft[1])
continue;
if(offset[2] < self->bleft[2])
continue;
if(offset[0] > self->tright[0])