/*
* G_ProjectileDistancePrestep
*/
static void G_ProjectileDistancePrestep( edict_t *projectile, float distance )
{
float speed;
vec3_t dir, dest;
int mask, i;
trace_t trace;
#ifdef PLASMAHACK
vec3_t plasma_hack_start;
#endif
if( projectile->movetype != MOVETYPE_TOSS
&& projectile->movetype != MOVETYPE_LINEARPROJECTILE
&& projectile->movetype != MOVETYPE_BOUNCE
&& projectile->movetype != MOVETYPE_BOUNCEGRENADE )
return;
if( !distance )
return;
if( ( speed = VectorNormalize2( projectile->velocity, dir ) ) == 0.0f )
return;
mask = ( projectile->r.clipmask ) ? projectile->r.clipmask : MASK_SHOT; // race trick should come set up inside clipmask
if( projectile->movetype == MOVETYPE_LINEARPROJECTILE )
VectorCopy( projectile->s.origin2, projectile->s.origin );
#ifdef PLASMAHACK
VectorCopy( projectile->s.origin, plasma_hack_start );
#endif
VectorMA( projectile->s.origin, distance, dir, dest );
G_Trace4D( &trace, projectile->s.origin, projectile->r.mins, projectile->r.maxs, dest, projectile->r.owner, mask, projectile->timeDelta );
for( i = 0; i < 3; i++ )
projectile->s.origin[i] = projectile->s.origin2[i] = projectile->olds.origin[i] = projectile->olds.origin2[i] = trace.endpos[i];
GClip_LinkEntity( projectile );
SV_Impact( projectile, &trace );
// set initial water state
if( !projectile->r.inuse )
return;
projectile->waterlevel = ( G_PointContents4D( projectile->s.origin, projectile->timeDelta ) & MASK_WATER ) ? qtrue : qfalse;
// ffs : hack for the plasmagun
#ifdef PLASMAHACK
if( projectile->s.type == ET_PLASMA )
if (trap_Cvar_Get( "rs_plasma_hack", "1", CVAR_ARCHIVE )->integer==1)//racesow
W_Plasma_Backtrace( projectile, plasma_hack_start );
#endif
}
/*
* W_Fire_Lead
* the seed is important to be as pointer for cgame prediction accuracy
*/
static void W_Fire_Lead( edict_t *self, vec3_t start, vec3_t aimdir, vec3_t axis[3], int damage,
int knockback, int stun, int hspread, int vspread, int *seed, int dflags,
int mod, int timeDelta )
{
trace_t tr;
vec3_t dir;
vec3_t end;
float r;
float u;
vec3_t water_start;
int content_mask = MASK_SHOT | MASK_WATER;
G_Trace4D( &tr, self->s.origin, NULL, NULL, start, self, MASK_SHOT, timeDelta );
if( !( tr.fraction < 1.0 ) )
{
#if 1
// circle
double alpha = M_PI * Q_crandom( seed ); // [-PI ..+PI]
double s = fabs( Q_crandom( seed ) ); // [0..1]
r = s * cos( alpha ) * hspread;
u = s * sin( alpha ) * vspread;
#else
// square
r = Q_crandom( seed ) * hspread;
u = Q_crandom( seed ) * vspread;
#endif
VectorMA( start, 8192, axis[0], end );
VectorMA( end, r, axis[1], end );
VectorMA( end, u, axis[2], end );
if( G_PointContents4D( start, timeDelta ) & MASK_WATER )
{
VectorCopy( start, water_start );
content_mask &= ~MASK_WATER;
}
G_Trace4D( &tr, start, NULL, NULL, end, self, content_mask, timeDelta );
// see if we hit water
if( tr.contents & MASK_WATER )
{
VectorCopy( tr.endpos, water_start );
if( !VectorCompare( start, tr.endpos ) )
{
vec3_t forward, right, up;
// change bullet's course when it enters water
VectorSubtract( end, start, dir );
VecToAngles( dir, dir );
AngleVectors( dir, forward, right, up );
#if 1
// circle
alpha = M_PI *Q_crandom( seed ); // [-PI ..+PI]
s = fabs( Q_crandom( seed ) ); // [0..1]
r = s *cos( alpha )*hspread*1.5;
u = s *sin( alpha )*vspread*1.5;
#else
r = Q_crandom( seed ) * hspread * 2;
u = Q_crandom( seed ) * vspread * 2;
#endif
VectorMA( water_start, 8192, forward, end );
VectorMA( end, r, right, end );
VectorMA( end, u, up, end );
}
// re-trace ignoring water this time
G_Trace4D( &tr, water_start, NULL, NULL, end, self, MASK_SHOT, timeDelta );
}
}
// send gun puff / flash
if( tr.fraction < 1.0 && tr.ent != -1 )
{
if( game.edicts[tr.ent].takedamage )
{
G_Damage( &game.edicts[tr.ent], self, self, aimdir, aimdir, tr.endpos, tr.plane.normal, damage, knockback, stun, dflags, mod );
}
else
{
if( !( tr.surfFlags & SURF_NOIMPACT ) )
{
}
}
}
}
/*
* 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 );
}
}
