/*
* GS_ClipVelocityToClippingPlanes
*/
static void GS_ClipVelocityToClippingPlanes( move_t *move )
{
int i;
for( i = 0; i < move->numClipPlanes; i++ )
{
if( DotProduct( move->velocity, move->clipPlaneNormals[i] ) >= SLIDEMOVE_PLANEINTERACT_EPSILON )
continue; // looking in the same direction than the velocity
#ifndef TRACEVICFIX
#ifndef TRACE_NOAXIAL
// this is a hack, cause non axial planes can return invalid positions in trace endpos
if( PlaneTypeForNormal( move->clipPlaneNormals[i] ) == PLANE_NONAXIAL )
{
// offset the origin a little bit along the plane normal
VectorMA( move->origin, 0.05, move->clipPlaneNormals[i], move->origin );
}
#endif
#endif
GS_ClipVelocity( move->velocity, move->clipPlaneNormals[i], move->velocity, move->slideBounce );
}
}
/*
* SV_Physics_Toss
*
* Toss, bounce, and fly movement. When onground, do nothing.
*
* FIXME: This function needs a serious rewrite
*/
static void SV_Physics_Toss( edict_t *ent ) {
trace_t trace;
vec3_t move;
float backoff;
edict_t *slave;
bool wasinwater;
bool isinwater;
vec3_t old_origin;
float oldSpeed;
// if not a team captain, so movement will be handled elsewhere
if( ent->flags & FL_TEAMSLAVE ) {
return;
}
// refresh the ground entity
if( ent->movetype == MOVETYPE_BOUNCE || ent->movetype == MOVETYPE_BOUNCEGRENADE ) {
if( ent->velocity[2] > 0.1f ) {
ent->groundentity = NULL;
}
}
if( ent->groundentity && ent->groundentity != world && !ent->groundentity->r.inuse ) {
ent->groundentity = NULL;
}
oldSpeed = VectorLength( ent->velocity );
if( ent->groundentity ) {
if( !oldSpeed ) {
return;
}
if( ent->movetype == MOVETYPE_TOSS ) {
if( ent->velocity[2] >= 8 ) {
ent->groundentity = NULL;
} else {
VectorClear( ent->velocity );
VectorClear( ent->avelocity );
G_CallStop( ent );
return;
}
}
}
VectorCopy( ent->s.origin, old_origin );
if( ent->accel != 0 ) {
if( ent->accel < 0 && VectorLength( ent->velocity ) < 50 ) {
VectorClear( ent->velocity );
} else {
vec3_t acceldir;
VectorNormalize2( ent->velocity, acceldir );
VectorScale( acceldir, ent->accel * FRAMETIME, acceldir );
VectorAdd( ent->velocity, acceldir, ent->velocity );
}
}
SV_CheckVelocity( ent );
// add gravity
if( ent->movetype != MOVETYPE_FLY && !ent->groundentity ) {
SV_AddGravity( ent );
}
// move angles
VectorMA( ent->s.angles, FRAMETIME, ent->avelocity, ent->s.angles );
// move origin
VectorScale( ent->velocity, FRAMETIME, move );
trace = SV_PushEntity( ent, move );
if( !ent->r.inuse ) {
return;
}
if( trace.fraction < 1.0f ) {
if( ent->movetype == MOVETYPE_BOUNCE ) {
backoff = 1.5;
} else if( ent->movetype == MOVETYPE_BOUNCEGRENADE ) {
backoff = 1.5;
} else {
backoff = 1;
}
GS_ClipVelocity( ent->velocity, trace.plane.normal, ent->velocity, backoff );
// stop if on ground
if( ent->movetype == MOVETYPE_BOUNCE || ent->movetype == MOVETYPE_BOUNCEGRENADE ) {
// stop dead on allsolid
// LA: hopefully will fix grenades bouncing down slopes
// method taken from Darkplaces sourcecode
if( trace.allsolid ||
( ISWALKABLEPLANE( &trace.plane ) &&
fabs( DotProduct( trace.plane.normal, ent->velocity ) ) < 40
)
) {
ent->groundentity = &game.edicts[trace.ent];
ent->groundentity_linkcount = ent->groundentity->linkcount;
VectorClear( ent->velocity );
VectorClear( ent->avelocity );
G_CallStop( ent );
}
} else {
// in movetype_toss things stop dead when touching ground
#if 0
G_CheckGround( ent );
if( ent->groundentity ) {
#else
// walkable or trapped inside solid brush
if( trace.allsolid || ISWALKABLEPLANE( &trace.plane ) ) {
ent->groundentity = trace.ent < 0 ? world : &game.edicts[trace.ent];
ent->groundentity_linkcount = ent->groundentity->linkcount;
#endif
VectorClear( ent->velocity );
VectorClear( ent->avelocity );
G_CallStop( ent );
}
}
}
// check for water transition
wasinwater = ( ent->watertype & MASK_WATER ) ? true : false;
ent->watertype = G_PointContents( ent->s.origin );
isinwater = ent->watertype & MASK_WATER ? true : false;
// never allow items in CONTENTS_NODROP
if( ent->item && ( ent->watertype & CONTENTS_NODROP ) ) {
G_FreeEdict( ent );
return;
}
if( isinwater ) {
ent->waterlevel = 1;
} else {
ent->waterlevel = 0;
}
if( !wasinwater && isinwater ) {
G_PositionedSound( old_origin, CHAN_AUTO, trap_SoundIndex( S_HIT_WATER ), ATTN_IDLE );
} else if( wasinwater && !isinwater ) {
G_PositionedSound( ent->s.origin, CHAN_AUTO, trap_SoundIndex( S_HIT_WATER ), ATTN_IDLE );
}
// move teamslaves
for( slave = ent->teamchain; slave; slave = slave->teamchain ) {
VectorCopy( ent->s.origin, slave->s.origin );
GClip_LinkEntity( slave );
}
}
//============================================================================
void SV_Physics_LinearProjectile( edict_t *ent ) {
vec3_t start, end;
int mask;
float startFlyTime, endFlyTime;
trace_t trace;
int old_waterLevel;
// if not a team captain movement will be handled elsewhere
if( ent->flags & FL_TEAMSLAVE ) {
return;
}
old_waterLevel = ent->waterlevel;
mask = ( ent->r.clipmask ) ? ent->r.clipmask : MASK_SOLID;
// find it's current position given the starting timeStamp
startFlyTime = (float)( max( game.prevServerTime - ent->s.linearMovementTimeStamp, 0 ) ) * 0.001f;
endFlyTime = (float)( game.serverTime - ent->s.linearMovementTimeStamp ) * 0.001f;
VectorMA( ent->s.linearMovementBegin, startFlyTime, ent->s.linearMovementVelocity, start );
VectorMA( ent->s.linearMovementBegin, endFlyTime, ent->s.linearMovementVelocity, end );
G_Trace4D( &trace, start, ent->r.mins, ent->r.maxs, end, ent, mask, ent->timeDelta );
VectorCopy( trace.endpos, ent->s.origin );
GClip_LinkEntity( ent );
SV_Impact( ent, &trace );
if( !ent->r.inuse ) { // the projectile may be freed if touched something
return;
}
// update some data required for the transmission
//VectorCopy( ent->velocity, ent->s.linearMovementVelocity );
GClip_TouchTriggers( ent );
ent->groundentity = NULL; // projectiles never have ground entity
ent->waterlevel = ( G_PointContents4D( ent->s.origin, ent->timeDelta ) & MASK_WATER ) ? true : false;
if( !old_waterLevel && ent->waterlevel ) {
G_PositionedSound( start, CHAN_AUTO, trap_SoundIndex( S_HIT_WATER ), ATTN_IDLE );
} else if( old_waterLevel && !ent->waterlevel ) {
G_PositionedSound( ent->s.origin, CHAN_AUTO, trap_SoundIndex( S_HIT_WATER ), ATTN_IDLE );
}
}
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;
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];
G_Trace4D( &trace, ent->s.origin, ent->r.mins, ent->r.maxs, end, ent, mask, ent->timeDelta );
if( trace.allsolid ) { // entity is trapped in another solid
VectorClear( 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
}
hit = &game.edicts[trace.ent];
if( ISWALKABLEPLANE( &trace.plane ) ) {
blocked |= 1; // floor
if( hit->s.solid == SOLID_BMODEL ) {
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->r.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
VectorClear( ent->velocity );
return 3;
}
VectorCopy( trace.plane.normal, planes[numplanes] );
numplanes++;
//
// modify original_velocity so it parallels all of the clip planes
//
for( i = 0; i < numplanes; i++ ) {
GS_ClipVelocity( original_velocity, planes[i], new_velocity, 1 );
for( j = 0; j < numplanes; j++ )
if( j != i ) {
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 ) {
VectorClear( ent->velocity );
return 7;
}
CrossProduct( planes[0], planes[1], dir );
VectorNormalize( 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 ) {
VectorClear( ent->velocity );
return blocked;
}
}
return blocked;
}