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g_phys.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.
*/
// g_phys.c
#include "g_local.h"
qboolean wasonground;
qboolean onconveyor;
edict_t *blocker;
/*
pushmove objects do not obey gravity, and do not interact with each other or trigger fields, but block normal movement and push normal objects when they move.
onground is set for toss objects when they come to a complete rest. it is set for steping or walking objects
doors, plats, etc are SOLID_BSP, and MOVETYPE_PUSH
bonus items are SOLID_TRIGGER touch, and MOVETYPE_TOSS
corpses are SOLID_NOT and MOVETYPE_TOSS
crates are SOLID_BBOX and MOVETYPE_TOSS
walking monsters are SOLID_SLIDEBOX and MOVETYPE_STEP
flying/floating monsters are SOLID_SLIDEBOX and MOVETYPE_FLY
solid_edge items only clip against bsp models.
*/
//
//=================
// other_FallingDamage
// Identical to player's P_FallingDamage... except of course ent doesn't have to be a player
//=================
//
void other_FallingDamage (edict_t *ent)
{
float delta;
float fall_time, fall_value;
int damage;
vec3_t dir;
if (ent->movetype == MOVETYPE_NOCLIP)
return;
if ((ent->oldvelocity[2] < 0) && (ent->velocity[2] > ent->oldvelocity[2]) && (!ent->groundentity))
{
delta = ent->oldvelocity[2];
}
else
{
if (!ent->groundentity)
return;
delta = ent->velocity[2] - ent->oldvelocity[2];
}
delta = delta*delta * 0.0001;
// never take falling damage if completely underwater
if (ent->waterlevel == 3)
return;
if (ent->waterlevel == 2)
delta *= 0.25;
if (ent->waterlevel == 1)
delta *= 0.5;
if (delta < 1)
return;
if (delta < 15)
{
ent->s.event = EV_FOOTSTEP;
return;
}
fall_value = delta*0.5;
if (fall_value > 40) fall_value = 40;
fall_time = level.time + FALL_TIME;
if (delta > 30)
{
ent->pain_debounce_time = level.time; // no normal pain sound
damage = (delta-30)/2;
if (damage < 1)
damage = 1;
VectorSet (dir, 0, 0, 1);
if (!deathmatch->value || !((int)dmflags->value & DF_NO_FALLING) )
T_Damage (ent, world, world, dir, ent->s.origin, vec3_origin, damage, 0, 0, MOD_FALLING);
}
else
{
// ent->s.event = EV_FALLSHORT;
return;
}
}
/*
============
SV_TestEntityPosition
============
*/
edict_t *SV_TestEntityPosition (edict_t *ent)
{
trace_t trace;
int mask;
if (ent->clipmask)
mask = ent->clipmask;
else
mask = MASK_SOLID;
if(ent->solid == SOLID_BSP)
{
vec3_t org, mins, maxs;
VectorAdd(ent->s.origin,ent->origin_offset,org);
VectorSubtract(ent->mins,ent->origin_offset,mins);
VectorSubtract(ent->maxs,ent->origin_offset,maxs);
trace = gi.trace (org, mins, maxs, org, ent, mask);
}
else
trace = gi.trace (ent->s.origin, ent->mins, ent->maxs, ent->s.origin, ent, mask);
if (trace.startsolid)
{
// Lazarus - work around for players/monsters standing on dead monsters causing
// those monsters to gib when rotating brush models are in the vicinity
if ( (ent->svflags & SVF_DEADMONSTER) && (trace.ent->client || (trace.ent->svflags & SVF_MONSTER)))
return NULL;
// Lazarus - return a bit more useful info than simply "g_edicts"
if(trace.ent)
return trace.ent;
else
return world;
}
return NULL;
}
/*
================
SV_CheckVelocity
================
*/
void SV_CheckVelocity (edict_t *ent)
{
// Lazarus: This is a pretty goofy way to bound velocity. This has the effect
// of changing directions, which makes no sense at all. Maybe they
// were just avoiding a sqrt?
/*
int i;
//
// bound velocity
//
for (i=0 ; i<3 ; i++)
{
if (ent->velocity[i] > sv_maxvelocity->value)
ent->velocity[i] = sv_maxvelocity->value;
else if (ent->velocity[i] < -sv_maxvelocity->value)
ent->velocity[i] = -sv_maxvelocity->value;
} */
if (VectorLength(ent->velocity) > sv_maxvelocity->value)
{
VectorNormalize(ent->velocity);
VectorScale(ent->velocity, sv_maxvelocity->value, ent->velocity);
}
}
/*
=============
SV_RunThink
Runs thinking code for this frame if necessary
=============
*/
qboolean SV_RunThink (edict_t *ent)
{
float thinktime;
thinktime = ent->nextthink;
if (thinktime <= 0)
return true;
if (thinktime > level.time+0.001)
return true;
ent->nextthink = 0;
if (!ent->think)
gi.error ("NULL ent->think for %s",ent->classname);
ent->think (ent);
return false;
}
/*
==================
SV_Impact
Two entities have touched, so run their touch functions
==================
*/
void SV_Impact (edict_t *e1, trace_t *trace)
{
edict_t *e2;
// cplane_t backplane;
e2 = trace->ent;
if (e1->touch && e1->solid != SOLID_NOT)
e1->touch (e1, e2, &trace->plane, trace->surface);
if (e2->touch && e2->solid != SOLID_NOT)
e2->touch (e2, e1, NULL, NULL);
}
/*
==================
ClipVelocity
Slide off of the impacting object
returns the blocked flags (1 = floor, 2 = step / wall)
==================
*/
#define STOP_EPSILON 0.1
int ClipVelocity (vec3_t in, vec3_t normal, vec3_t out, float overbounce)
{
float backoff;
float change;
int i, blocked;
blocked = 0;
if (normal[2] > 0)
blocked |= 1; // floor
if (!normal[2])
blocked |= 2; // step
backoff = DotProduct (in, normal) * overbounce;
for (i=0 ; i<3 ; i++)
{
change = normal[i]*backoff;
out[i] = in[i] - change;
if (out[i] > -STOP_EPSILON && out[i] < STOP_EPSILON)
out[i] = 0;
}
return blocked;
}
/*
============
SV_FlyMove
The basic solid body movement clip that slides along multiple planes
Returns the clipflags if the velocity was modified (hit something solid)
1 = floor
2 = wall / step
4 = dead stop
============
*/
#define MAX_CLIP_PLANES 5
int SV_FlyMove (edict_t *ent, float time, int mask)
{
edict_t *hit;
int bumpcount, numbumps;
vec3_t dir;
float d;
int numplanes;
vec3_t planes[MAX_CLIP_PLANES];
vec3_t primal_velocity, original_velocity, new_velocity;
int i, j;
trace_t trace;
vec3_t end;
float time_left;
int blocked;
int num_retries = 0;
retry:
numbumps = 4;
blocked = 0;
VectorCopy (ent->velocity, original_velocity);
VectorCopy (ent->velocity, primal_velocity);
numplanes = 0;
time_left = time;
ent->groundentity = NULL;
for (bumpcount=0 ; bumpcount<numbumps ; bumpcount++)
{
for (i=0 ; i<3 ; i++)
end[i] = ent->s.origin[i] + time_left * ent->velocity[i];
trace = gi.trace (ent->s.origin, ent->mins, ent->maxs, end, ent, mask);
if (trace.allsolid)
{ // entity is trapped in another solid
VectorCopy (vec3_origin, ent->velocity);
return 3;
}
if (trace.fraction > 0)
{ // actually covered some distance
VectorCopy (trace.endpos, ent->s.origin);
VectorCopy (ent->velocity, original_velocity);
numplanes = 0;
}
if (trace.fraction == 1)
break; // moved the entire distance
blocker = hit = trace.ent;
// Lazarus: If the pushed entity is a conveyor, raise us up and
// try again
if (!num_retries && wasonground)
{
if ((hit->movetype == MOVETYPE_CONVEYOR) && (trace.plane.normal[2] > 0.7))
{
vec3_t above;
VectorCopy(end,above);
above[2] += 32;
trace = gi.trace (above, ent->mins, ent->maxs, end, ent, mask);
VectorCopy (trace.endpos,end);
end[2] += 1;
VectorSubtract (end,ent->s.origin,ent->velocity);
VectorScale (ent->velocity,1.0/time_left,ent->velocity);
num_retries++;
goto retry;
}
}
// if blocked by player AND on a conveyor
if (hit->client && onconveyor)
{
vec3_t player_dest;
trace_t ptrace;
if(ent->mass > hit->mass)
{
VectorMA (hit->s.origin,time_left,ent->velocity,player_dest);
ptrace = gi.trace(hit->s.origin,hit->mins,hit->maxs,player_dest,hit,hit->clipmask);
if(ptrace.fraction == 1.0)
{
VectorCopy(player_dest,hit->s.origin);
gi.linkentity(hit);
goto retry;
}
}
blocked |= 8;
}
if (trace.plane.normal[2] > 0.7)
{
blocked |= 1; // floor
if ( hit->solid == SOLID_BSP)
{
ent->groundentity = hit;
ent->groundentity_linkcount = hit->linkcount;
}
}
if (!trace.plane.normal[2])
{
blocked |= 2; // step
}
//
// run the impact function
//
SV_Impact (ent, &trace);
if (!ent->inuse)
break; // removed by the impact function
time_left -= time_left * trace.fraction;
// cliped to another plane
if (numplanes >= MAX_CLIP_PLANES)
{ // this shouldn't really happen
VectorCopy (vec3_origin, ent->velocity);
blocked |= 3;
return blocked;
}
VectorCopy (trace.plane.normal, planes[numplanes]);
numplanes++;
//
// modify original_velocity so it parallels all of the clip planes
//
for (i=0 ; i<numplanes ; i++)
{
ClipVelocity (original_velocity, planes[i], new_velocity, 1);
for (j=0 ; j<numplanes ; j++)
if ((j != i) && !VectorCompare (planes[i], planes[j]))
{
if (DotProduct (new_velocity, planes[j]) < 0)
break; // not ok
}
if (j == numplanes)
break;
}
if (i != numplanes)
{ // go along this plane
VectorCopy (new_velocity, ent->velocity);
}
else
{ // go along the crease
if (numplanes != 2)
{
// gi.dprintf ("clip velocity, numplanes == %i\n",numplanes);
VectorCopy (vec3_origin, ent->velocity);
blocked |= 7;
return blocked;
}
CrossProduct (planes[0], planes[1], dir);
d = DotProduct (dir, ent->velocity);
VectorScale (dir, d, ent->velocity);
}
//
// if original velocity is against the original velocity, stop dead
// to avoid tiny occilations in sloping corners
//
if (DotProduct (ent->velocity, primal_velocity) <= 0)
{
VectorCopy (vec3_origin, ent->velocity);
return blocked;
}
}
return blocked;
}
/*
============
SV_PushableMove
The basic solid body movement clip that slides along multiple planes
Returns the clipflags if the velocity was modified (hit something solid)
1 = floor
2 = wall / step
4 = dead stop
============
*/
#define MAX_CLIP_PLANES 5
int SV_PushableMove (edict_t *ent, float time, int mask)
{
edict_t *hit;
int bumpcount, numbumps;
vec3_t dir;
float d;
int numplanes;
vec3_t planes[MAX_CLIP_PLANES];
vec3_t primal_velocity, original_velocity, new_velocity;
int i, j;
trace_t trace;
vec3_t end;
float time_left;
int blocked;
int num_retries=0;
// Corrective stuff added for bmodels with no origin brush
vec3_t mins, maxs;
vec3_t origin;
retry:
numbumps = 4;
ent->bounce_me = 0;
blocked = 0;
VectorCopy (ent->velocity, original_velocity);
VectorCopy (ent->velocity, primal_velocity);
numplanes = 0;
time_left = time;
VectorAdd(ent->s.origin,ent->origin_offset,origin);
VectorCopy(ent->size,maxs);
VectorScale(maxs,0.5,maxs);
VectorNegate(maxs,mins);
ent->groundentity = NULL;
for (bumpcount=0 ; bumpcount<numbumps ; bumpcount++)
{
for (i=0 ; i<3 ; i++)
end[i] = origin[i] + time_left * ent->velocity[i];
trace = gi.trace (origin, mins, maxs, end, ent, mask);
if (trace.allsolid)
{ // entity is trapped in another solid
VectorCopy (vec3_origin, ent->velocity);
return 3;
}
if (trace.fraction > 0)
{ // actually covered some distance
VectorCopy (trace.endpos, origin);
VectorSubtract (origin, ent->origin_offset, ent->s.origin);
VectorCopy (ent->velocity, original_velocity);
numplanes = 0;
}
if (trace.fraction == 1)
break; // moved the entire distance
blocker = hit = trace.ent;
// Lazarus: If the pushed entity is a conveyor, raise us up and
// try again
if (!num_retries && wasonground)
{
if ((hit->movetype == MOVETYPE_CONVEYOR) && (trace.plane.normal[2] > 0.7))
{
vec3_t above;
VectorCopy(end,above);
above[2] += 32;
trace = gi.trace (above, mins, maxs, end, ent, mask);
VectorCopy (trace.endpos,end);
VectorSubtract (end,origin,ent->velocity);
VectorScale (ent->velocity,1.0/time_left,ent->velocity);
num_retries++;
goto retry;
}
}
// if blocked by player AND on a conveyor
if (hit->client && onconveyor)
{
vec3_t player_dest;
trace_t ptrace;
if(ent->mass > hit->mass)
{
VectorMA (hit->s.origin,time_left,ent->velocity,player_dest);
ptrace = gi.trace(hit->s.origin,hit->mins,hit->maxs,player_dest,hit,hit->clipmask);
if(ptrace.fraction == 1.0)
{
VectorCopy(player_dest,hit->s.origin);
gi.linkentity(hit);
goto retry;
}
}
blocked |= 8;
}
if (trace.plane.normal[2] > 0.7)
{
// Lazarus: special case - if this ent or the impact ent is
// in water, motion is NOT blocked.
if((hit->movetype != MOVETYPE_PUSHABLE) || ((ent->waterlevel==0) && (hit->waterlevel==0)))
{
blocked |= 1; // floor
if ( hit->solid == SOLID_BSP)
{
ent->groundentity = hit;
ent->groundentity_linkcount = hit->linkcount;
}
}
}
if (!trace.plane.normal[2])
{
blocked |= 2; // step
}
//
// run the impact function
//
SV_Impact (ent, &trace);
if (!ent->inuse)
break; // removed by the impact function
time_left -= time_left * trace.fraction;
// clipped to another plane
if (numplanes >= MAX_CLIP_PLANES)
{ // this shouldn't really happen
VectorCopy (vec3_origin, ent->velocity);
blocked |= 3;
return blocked;
}
VectorCopy (trace.plane.normal, planes[numplanes]);
numplanes++;
//
// modify original_velocity so it parallels all of the clip planes
//
for (i=0 ; i<numplanes ; i++)
{
// DH: experimenting here. 1 is no bounce,
// 1.5 bounces like a grenade, 2 is a superball
if(ent->bounce_me == 1) {
ClipVelocity (original_velocity, planes[i], new_velocity, 1.4);
// stop small oscillations
if (new_velocity[2] < 60)
{
ent->groundentity = trace.ent;
ent->groundentity_linkcount = trace.ent->linkcount;
VectorCopy (vec3_origin, new_velocity);
} else {
// add a bit of random horizontal motion
if(!new_velocity[0]) new_velocity[0] = crandom() * new_velocity[2]/4;
if(!new_velocity[1]) new_velocity[1] = crandom() * new_velocity[2]/4;
}
} else if(ent->bounce_me == 2)
VectorCopy(ent->velocity,new_velocity);
else
ClipVelocity (original_velocity, planes[i], new_velocity, 1);
for (j=0 ; j<numplanes ; j++)
if ((j != i) && !VectorCompare (planes[i], planes[j]))
{
if (DotProduct (new_velocity, planes[j]) < 0)
break; // not ok
}
if (j == numplanes)
break;
}
if (i != numplanes)
{ // go along this plane
VectorCopy (new_velocity, ent->velocity);
}
else
{ // go along the crease
if (numplanes != 2)
{
VectorCopy (vec3_origin, ent->velocity);
blocked |= 7;
return blocked;
}
CrossProduct (planes[0], planes[1], dir);
d = DotProduct (dir, ent->velocity);
VectorScale (dir, d, ent->velocity);
}
//
// if velocity is against the original velocity, stop dead
// to avoid tiny occilations in sloping corners
//
if( !ent->bounce_me ) {
if (DotProduct (ent->velocity, primal_velocity) <= 0)
{
VectorCopy (vec3_origin, ent->velocity);
return blocked;
}
}
}
return blocked;
}
/*
============
SV_AddGravity
============
*/
void SV_AddGravity (edict_t *ent)
{
if(level.time > ent->gravity_debounce_time)
ent->velocity[2] -= ent->gravity * sv_gravity->value * FRAMETIME;
}
/*
===============================================================================
PUSHMOVE
===============================================================================
*/
/*
=================================================
SV_PushEntity
Does not change the entities velocity at all
called for MOVETYPE_TOSS
MOVETYPE_BOUNCE
MOVETYPE_FLY
MOVETYPE_FLYMISSILE
MOVETYPE_RAIN
=================================================
*/
trace_t SV_PushEntity (edict_t *ent, vec3_t push)
{
trace_t trace;
vec3_t start;
vec3_t end;
int mask;
int num_retries=0;
VectorCopy (ent->s.origin, start);
VectorAdd (start, push, end);
if (ent->clipmask)
mask = ent->clipmask;
else
mask = MASK_SOLID;
retry:
trace = gi.trace (start, ent->mins, ent->maxs, end, ent, mask);
// Harven fix start
if (trace.startsolid || trace.allsolid)
{
mask ^= CONTENTS_DEADMONSTER;
trace = gi.trace (start, ent->mins, ent->maxs, end, ent, mask);
}
// Harven fix end
VectorCopy (trace.endpos, ent->s.origin);
gi.linkentity (ent);
if (trace.fraction != 1.0)
{
SV_Impact (ent, &trace);
// if the pushed entity went away and the pusher is still there
if (!trace.ent->inuse && ent->inuse)
{
// move the pusher back and try again
VectorCopy (start, ent->s.origin);
gi.linkentity (ent);
goto retry;
}
// Lazarus: If the pushed entity is a conveyor, raise us up and
// try again
if (!num_retries && wasonground)
{
if ((trace.ent->movetype == MOVETYPE_CONVEYOR) && (trace.plane.normal[2] > 0.7) && !trace.startsolid)
{
vec3_t above;
VectorCopy(end,above);
above[2] += 32;
trace = gi.trace (above, ent->mins, ent->maxs, end, ent, mask);
VectorCopy (trace.endpos, end);
VectorCopy (start, ent->s.origin);
gi.linkentity(ent);
num_retries++;
goto retry;
}
}
if(onconveyor && !trace.ent->client)
{
// If blocker can be damaged, destroy it. Otherwise destroy blockee.
if(trace.ent->takedamage == DAMAGE_YES)
T_Damage(trace.ent, ent, ent, vec3_origin, trace.ent->s.origin, vec3_origin, 100000, 1, 0, MOD_CRUSH);
else
T_Damage(ent, trace.ent, trace.ent, vec3_origin, ent->s.origin, vec3_origin, 100000, 1, 0, MOD_CRUSH);
}
}
if (ent->inuse)
G_TouchTriggers (ent);
return trace;
}
typedef struct
{
edict_t *ent;
vec3_t origin;
vec3_t angles;
float deltayaw;
} pushed_t;
pushed_t pushed[MAX_EDICTS], *pushed_p;
edict_t *obstacle;
void MoveRiders(edict_t *platform, edict_t *ignore, vec3_t move, vec3_t amove, qboolean turn)
{
int i;
edict_t *rider;
for(i=1, rider=g_edicts+i; i<=globals.num_edicts; i++, rider++) {
if((rider->groundentity == platform) && (rider != ignore)) {
VectorAdd(rider->s.origin,move,rider->s.origin);
if (turn && (amove[YAW] != 0.)) {
if(!rider->client)
rider->s.angles[YAW] += amove[YAW];
else
{
rider->s.angles[YAW] += amove[YAW];
rider->client->ps.pmove.delta_angles[YAW] += ANGLE2SHORT(amove[YAW]);
rider->client->ps.pmove.pm_type = PM_FREEZE;
rider->client->ps.pmove.pm_flags |= PMF_NO_PREDICTION;
}
}
gi.linkentity(rider);
if(SV_TestEntityPosition(rider)) {
// Move is blocked. Since this is for riders, not pushees,
// it should be ok to just back the move for this rider off
VectorSubtract(rider->s.origin,move,rider->s.origin);
if(turn && (amove[YAW] != 0.)) {
rider->s.angles[YAW] -= amove[YAW];
if(rider->client)
{
rider->client->ps.pmove.delta_angles[YAW] -= ANGLE2SHORT(amove[YAW]);
rider->client->ps.viewangles[YAW] -= amove[YAW];
}
}
gi.linkentity(rider);
} else {
// move this rider's riders
MoveRiders(rider,ignore,move,amove,turn);
}
}
}
}
/*
============
RealBoundingBox
Returns the actual bounding box of a bmodel. This is a big improvement over
what q2 normally does with rotating bmodels - q2 sets absmin, absmax to a cube
that will completely contain the bmodel at *any* rotation on *any* axis, whether
the bmodel can actually rotate to that angle or not. This leads to a lot of
false block tests in SV_Push if another bmodel is in the vicinity.
============
*/
void RealBoundingBox(edict_t *ent, vec3_t mins, vec3_t maxs)
{
vec3_t forward, left, up, f1, l1, u1;
vec3_t p[8];
int i, j, k, j2, k4;
for(k=0; k<2; k++)
{
k4 = k*4;
if(k)
p[k4][2] = ent->maxs[2];
else
p[k4][2] = ent->mins[2];
p[k4+1][2] = p[k4][2];
p[k4+2][2] = p[k4][2];
p[k4+3][2] = p[k4][2];
for(j=0; j<2; j++)
{
j2 = j*2;
if(j)
p[j2+k4][1] = ent->maxs[1];
else
p[j2+k4][1] = ent->mins[1];
p[j2+k4+1][1] = p[j2+k4][1];
for(i=0; i<2; i++)
{
if(i)
p[i+j2+k4][0] = ent->maxs[0];
else
p[i+j2+k4][0] = ent->mins[0];
}
}
}
AngleVectors(ent->s.angles,forward,left,up);
for(i=0; i<8; i++)
{
VectorScale(forward,p[i][0],f1);
VectorScale(left,-p[i][1],l1);
VectorScale(up,p[i][2],u1);
VectorAdd(ent->s.origin,f1,p[i]);
VectorAdd(p[i],l1,p[i]);
VectorAdd(p[i],u1,p[i]);
}
VectorCopy(p[0],mins);
VectorCopy(p[0],maxs);
for(i=1; i<8; i++)
{
mins[0] = min(mins[0],p[i][0]);
mins[1] = min(mins[1],p[i][1]);
mins[2] = min(mins[2],p[i][2]);
maxs[0] = max(maxs[0],p[i][0]);
maxs[1] = max(maxs[1],p[i][1]);
maxs[2] = max(maxs[2],p[i][2]);
}
}
/*
============
SV_Push
Objects need to be moved back on a failed push,
otherwise riders would continue to slide.
============
*/
qboolean SV_Push (edict_t *pusher, vec3_t move, vec3_t amove)
{
int i, e;
edict_t *check, *block;
vec3_t mins, maxs;
pushed_t *p;
vec3_t org, org2, org_check, forward, right, up;
vec3_t move2={0,0,0};
vec3_t move3={0,0,0};
vec3_t realmins, realmaxs;
qboolean turn;
trace_t tr;
// clamp the move to 1/8 units, so the position will
// be accurate for client side prediction
for (i=0 ; i<3 ; i++)
{
float temp;
temp = move[i]*8.0;
if (temp > 0.0)
temp += 0.5;
else
temp -= 0.5;
move[i] = 0.125 * (int)temp;
}
// find the bounding box
for (i=0 ; i<3 ; i++)
{
mins[i] = pusher->absmin[i] + move[i];
maxs[i] = pusher->absmax[i] + move[i];
}
// Lazarus: temp turn indicates whether riders
// should rotate with the pusher
if(pusher->turn_rider && turn_rider->value)
turn = true;
else
turn = false;
// we need this for pushing things later
VectorSubtract (vec3_origin, amove, org);
AngleVectors (org, forward, right, up);
// save the pusher's original position
pushed_p->ent = pusher;
VectorCopy (pusher->s.origin, pushed_p->origin);
VectorCopy (pusher->s.angles, pushed_p->angles);
if (pusher->client)
pushed_p->deltayaw = pusher->client->ps.pmove.delta_angles[YAW];
pushed_p++;
// move the pusher to it's final position
VectorAdd (pusher->s.origin, move, pusher->s.origin);
VectorAdd (pusher->s.angles, amove, pusher->s.angles);
gi.linkentity (pusher);
// Lazarus: Standard Q2 takes a horrible shortcut
// with rotating brush models, setting
// absmin and absmax to a cube that would
// contain the brush model if it could
// rotate around ANY axis. The result is
// a lot of false hits on intersections,
// particularly when you have multiple
// rotating brush models in the same area.
// RealBoundingBox gives us the actual
// bounding box at the current angles.
RealBoundingBox(pusher,realmins,realmaxs);
// see if any solid entities are inside the final position
check = g_edicts+1;
for (e = 1; e < globals.num_edicts; e++, check++)
{
if (!check->inuse)
continue;
if (check == pusher->owner) // Lazarus: owner can't block us
continue;
if (check->movetype == MOVETYPE_PUSH
|| check->movetype == MOVETYPE_STOP
|| check->movetype == MOVETYPE_NONE
|| check->movetype == MOVETYPE_NOCLIP
|| check->movetype == MOVETYPE_PENDULUM)
continue;
if (!check->area.prev)