/*
==============
AICast_CheckVisibility
==============
*/
qboolean AICast_CheckVisibility( gentity_t *srcent, gentity_t *destent ) {
vec3_t dir, entangles, middle, eye, viewangles;
cast_state_t *cs, *ocs;
float fov, dist;
int viewer, ent;
cast_visibility_t *vis;
orientation_t or;
if ( destent->flags & FL_NOTARGET ) {
return qfalse;
}
//
viewer = srcent->s.number;
ent = destent->s.number;
//
cs = AICast_GetCastState( viewer );
ocs = AICast_GetCastState( ent );
//
vis = &cs->vislist[ent];
//
// if the destent is the client, and they have just loaded a savegame, ignore them temporarily
if ( !destent->aiCharacter && level.lastLoadTime && ( level.lastLoadTime > level.time - 2000 ) && !vis->visible_timestamp ) {
return qfalse;
}
// if we heard them
/*
if ( (vis->lastcheck_timestamp) &&
(ocs->lastWeaponFired) &&
(ocs->lastWeaponFired >= vis->lastcheck_timestamp) &&
(AICast_GetWeaponSoundRange( ocs->lastWeaponFiredWeaponNum ) > Distance( srcent->r.currentOrigin, ocs->lastWeaponFiredPos ))) {
return qtrue;
}
*/
//
// set the FOV
fov = cs->attributes[FOV] * aiStateFovScales[cs->aiState];
if ( !fov ) { // assume it's a player, give them a generic fov
fov = 180;
}
if ( cs->aiFlags & AIFL_ZOOMING ) {
fov *= 0.8;
} else {
if ( cs->lastEnemy >= 0 ) { // they've already been in a fight, so give them a very large fov
if ( fov < 270 ) {
fov = 270;
}
}
}
// RF, if they were visible last check, then give us a full FOV, since we are aware of them
if ( cs->aiState >= AISTATE_ALERT && vis->visible_timestamp == vis->lastcheck_timestamp ) {
fov = 360;
}
//calculate middle of bounding box
VectorAdd( destent->r.mins, destent->r.maxs, middle );
VectorScale( middle, 0.5, middle );
VectorAdd( destent->client->ps.origin, middle, middle );
// calculate eye position
if ( ( level.lastLoadTime < level.time - 4000 ) && ( srcent->r.svFlags & SVF_CASTAI ) ) {
if ( clientHeadTagTimes[srcent->s.number] == level.time ) {
// use the actual direction the head is facing
vectoangles( clientHeadTags[srcent->s.number].axis[0], viewangles );
// and the actual position of the head
VectorCopy( clientHeadTags[srcent->s.number].origin, eye );
} else if ( trap_GetTag( srcent->s.number, "tag_head", &or ) ) {
// use the actual direction the head is facing
vectoangles( or.axis[0], viewangles );
// and the actual position of the head
VectorCopy( or.origin, eye );
VectorMA( eye, 12, or.axis[2], eye );
// save orientation data
memcpy( &clientHeadTags[srcent->s.number], &or, sizeof( orientation_t ) );
clientHeadTagTimes[srcent->s.number] = level.time;
} else {
VectorCopy( srcent->client->ps.origin, eye );
eye[2] += srcent->client->ps.viewheight;
VectorCopy( srcent->client->ps.viewangles, viewangles );
// save orientation data (so we dont keep checking for a tag when it doesn't exist)
VectorCopy( eye, clientHeadTags[srcent->s.number].origin );
AnglesToAxis( viewangles, clientHeadTags[srcent->s.number].axis );
clientHeadTagTimes[srcent->s.number] = level.time;
}
} else {
VectorCopy( srcent->client->ps.origin, eye );
eye[2] += srcent->client->ps.viewheight;
VectorCopy( srcent->client->ps.viewangles, viewangles );
}
//check if entity is within field of vision
VectorSubtract( middle, eye, dir );
vectoangles( dir, entangles );
//
dist = VectorLength( dir );
//
// alertness is visible range
if ( cs->bs && dist > cs->attributes[ALERTNESS] ) {
return qfalse;
}
// check FOV
if ( !AICast_InFieldOfVision( viewangles, fov, entangles ) ) {
return qfalse;
}
//
if ( !AICast_VisibleFromPos( srcent->client->ps.origin, srcent->s.number, destent->client->ps.origin, destent->s.number, qtrue ) ) {
return qfalse;
}
//
return qtrue;
}
/*
==============
AICast_CheckVisibility
==============
*/
qboolean AICast_CheckVisibility( gentity_t *srcent, gentity_t *destent ) {
vec3_t dir, entangles, middle, eye, viewangles;
cast_state_t *cs;
float fov, dist;
int viewer, ent;
orientation_t or;
if ( destent->flags & FL_NOTARGET ) {
return qfalse;
}
viewer = srcent->s.number;
ent = destent->s.number;
//
cs = AICast_GetCastState( viewer );
AICast_GetCastState( ent );
// set the FOV
fov = cs->attributes[FOV] * aiStateFovScales[cs->aiState];
if ( !fov ) { // assume it's a player, give them a generic fov
fov = 180;
}
if ( cs->aiFlags & AIFL_ZOOMING ) {
fov *= 0.8;
}
//calculate middle of bounding box
VectorAdd( destent->r.mins, destent->r.maxs, middle );
VectorScale( middle, 0.5, middle );
VectorAdd( destent->client->ps.origin, middle, middle );
// calculate eye position
if ( srcent->r.svFlags & SVF_CASTAI ) {
if ( trap_GetTag( srcent->s.number, "tag_head", &or ) ) {
// use the actual direction the head is facing
vectoangles( or.axis[0], viewangles );
// and the actual position of the head
VectorCopy( or.origin, eye );
} else {
VectorCopy( srcent->client->ps.origin, eye );
eye[2] += srcent->client->ps.viewheight;
VectorCopy( srcent->client->ps.viewangles, viewangles );
}
} else {
VectorCopy( srcent->client->ps.origin, eye );
eye[2] += srcent->client->ps.viewheight;
VectorCopy( srcent->client->ps.viewangles, viewangles );
}
//check if entity is within field of vision
VectorSubtract( middle, eye, dir );
vectoangles( dir, entangles );
//
dist = VectorLength( dir );
//
// alertness is visible range
if ( cs->bs && dist > cs->attributes[ALERTNESS] ) {
return qfalse;
}
// check FOV
if ( !AICast_InFieldOfVision( viewangles, fov, entangles ) ) {
return qfalse;
}
//
if ( !AICast_VisibleFromPos( srcent->client->ps.origin, srcent->s.number, destent->client->ps.origin, destent->s.number, qtrue ) ) {
return qfalse;
}
//
return qtrue;
}
