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Diffstat (limited to 'src/cgame/cg_ents.c')
| -rw-r--r-- | src/cgame/cg_ents.c | 1256 |
1 files changed, 1256 insertions, 0 deletions
diff --git a/src/cgame/cg_ents.c b/src/cgame/cg_ents.c new file mode 100644 index 0000000..2d2e808 --- /dev/null +++ b/src/cgame/cg_ents.c @@ -0,0 +1,1256 @@ +/* +=========================================================================== +Copyright (C) 1999-2005 Id Software, Inc. +Copyright (C) 2000-2006 Tim Angus + +This file is part of Tremulous. + +Tremulous 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. + +Tremulous 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 Tremulous; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +=========================================================================== +*/ + +// cg_ents.c -- present snapshot entities, happens every single frame + + +#include "cg_local.h" + +/* +====================== +CG_DrawBoxFace + +Draws a bounding box face +====================== +*/ +static void CG_DrawBoxFace( vec3_t a, vec3_t b, vec3_t c, vec3_t d ) +{ + polyVert_t verts[ 4 ]; + vec4_t color = { 255.0f, 0.0f, 0.0f, 128.0f }; + + VectorCopy( d, verts[ 0 ].xyz ); + verts[ 0 ].st[ 0 ] = 1; + verts[ 0 ].st[ 1 ] = 1; + Vector4Copy( color, verts[ 0 ].modulate ); + + VectorCopy( c, verts[ 1 ].xyz ); + verts[ 1 ].st[ 0 ] = 1; + verts[ 1 ].st[ 1 ] = 0; + Vector4Copy( color, verts[ 1 ].modulate ); + + VectorCopy( b, verts[ 2 ].xyz ); + verts[ 2 ].st[ 0 ] = 0; + verts[ 2 ].st[ 1 ] = 0; + Vector4Copy( color, verts[ 2 ].modulate ); + + VectorCopy( a, verts[ 3 ].xyz ); + verts[ 3 ].st[ 0 ] = 0; + verts[ 3 ].st[ 1 ] = 1; + Vector4Copy( color, verts[ 3 ].modulate ); + + trap_R_AddPolyToScene( cgs.media.outlineShader, 4, verts ); +} + +/* +====================== +CG_DrawBoundingBox + +Draws a bounding box +====================== +*/ +void CG_DrawBoundingBox( vec3_t origin, vec3_t mins, vec3_t maxs ) +{ + vec3_t ppp, mpp, mmp, pmp; + vec3_t mmm, pmm, ppm, mpm; + + ppp[ 0 ] = origin[ 0 ] + maxs[ 0 ]; + ppp[ 1 ] = origin[ 1 ] + maxs[ 1 ]; + ppp[ 2 ] = origin[ 2 ] + maxs[ 2 ]; + + mpp[ 0 ] = origin[ 0 ] + mins[ 0 ]; + mpp[ 1 ] = origin[ 1 ] + maxs[ 1 ]; + mpp[ 2 ] = origin[ 2 ] + maxs[ 2 ]; + + mmp[ 0 ] = origin[ 0 ] + mins[ 0 ]; + mmp[ 1 ] = origin[ 1 ] + mins[ 1 ]; + mmp[ 2 ] = origin[ 2 ] + maxs[ 2 ]; + + pmp[ 0 ] = origin[ 0 ] + maxs[ 0 ]; + pmp[ 1 ] = origin[ 1 ] + mins[ 1 ]; + pmp[ 2 ] = origin[ 2 ] + maxs[ 2 ]; + + ppm[ 0 ] = origin[ 0 ] + maxs[ 0 ]; + ppm[ 1 ] = origin[ 1 ] + maxs[ 1 ]; + ppm[ 2 ] = origin[ 2 ] + mins[ 2 ]; + + mpm[ 0 ] = origin[ 0 ] + mins[ 0 ]; + mpm[ 1 ] = origin[ 1 ] + maxs[ 1 ]; + mpm[ 2 ] = origin[ 2 ] + mins[ 2 ]; + + mmm[ 0 ] = origin[ 0 ] + mins[ 0 ]; + mmm[ 1 ] = origin[ 1 ] + mins[ 1 ]; + mmm[ 2 ] = origin[ 2 ] + mins[ 2 ]; + + pmm[ 0 ] = origin[ 0 ] + maxs[ 0 ]; + pmm[ 1 ] = origin[ 1 ] + mins[ 1 ]; + pmm[ 2 ] = origin[ 2 ] + mins[ 2 ]; + + //phew! + + CG_DrawBoxFace( ppp, mpp, mmp, pmp ); + CG_DrawBoxFace( ppp, pmp, pmm, ppm ); + CG_DrawBoxFace( mpp, ppp, ppm, mpm ); + CG_DrawBoxFace( mmp, mpp, mpm, mmm ); + CG_DrawBoxFace( pmp, mmp, mmm, pmm ); + CG_DrawBoxFace( mmm, mpm, ppm, pmm ); +} + + +/* +====================== +CG_PositionEntityOnTag + +Modifies the entities position and axis by the given +tag location +====================== +*/ +void CG_PositionEntityOnTag( refEntity_t *entity, const refEntity_t *parent, + qhandle_t parentModel, char *tagName ) +{ + int i; + orientation_t lerped; + + // lerp the tag + trap_R_LerpTag( &lerped, parentModel, parent->oldframe, parent->frame, + 1.0 - parent->backlerp, tagName ); + + // FIXME: allow origin offsets along tag? + VectorCopy( parent->origin, entity->origin ); + for( i = 0; i < 3; i++ ) + VectorMA( entity->origin, lerped.origin[ i ], parent->axis[ i ], entity->origin ); + + // had to cast away the const to avoid compiler problems... + MatrixMultiply( lerped.axis, ( (refEntity_t *)parent )->axis, entity->axis ); + entity->backlerp = parent->backlerp; +} + + +/* +====================== +CG_PositionRotatedEntityOnTag + +Modifies the entities position and axis by the given +tag location +====================== +*/ +void CG_PositionRotatedEntityOnTag( refEntity_t *entity, const refEntity_t *parent, + qhandle_t parentModel, char *tagName ) +{ + int i; + orientation_t lerped; + vec3_t tempAxis[ 3 ]; + +//AxisClear( entity->axis ); + // lerp the tag + trap_R_LerpTag( &lerped, parentModel, parent->oldframe, parent->frame, + 1.0 - parent->backlerp, tagName ); + + // FIXME: allow origin offsets along tag? + VectorCopy( parent->origin, entity->origin ); + for( i = 0; i < 3; i++ ) + VectorMA( entity->origin, lerped.origin[ i ], parent->axis[ i ], entity->origin ); + + // had to cast away the const to avoid compiler problems... + MatrixMultiply( entity->axis, lerped.axis, tempAxis ); + MatrixMultiply( tempAxis, ( (refEntity_t *)parent )->axis, entity->axis ); +} + + + +/* +========================================================================== + +FUNCTIONS CALLED EACH FRAME + +========================================================================== +*/ + +/* +====================== +CG_SetEntitySoundPosition + +Also called by event processing code +====================== +*/ +void CG_SetEntitySoundPosition( centity_t *cent ) +{ + if( cent->currentState.solid == SOLID_BMODEL ) + { + vec3_t origin; + float *v; + + v = cgs.inlineModelMidpoints[ cent->currentState.modelindex ]; + VectorAdd( cent->lerpOrigin, v, origin ); + trap_S_UpdateEntityPosition( cent->currentState.number, origin ); + } + else + trap_S_UpdateEntityPosition( cent->currentState.number, cent->lerpOrigin ); +} + +/* +================== +CG_EntityEffects + +Add continuous entity effects, like local entity emission and lighting +================== +*/ +static void CG_EntityEffects( centity_t *cent ) +{ + // update sound origins + CG_SetEntitySoundPosition( cent ); + + // add loop sound + if( cent->currentState.loopSound ) + { + if( cent->currentState.eType != ET_SPEAKER ) + { + trap_S_AddLoopingSound( cent->currentState.number, cent->lerpOrigin, vec3_origin, + cgs.gameSounds[ cent->currentState.loopSound ] ); + } + else + { + trap_S_AddRealLoopingSound( cent->currentState.number, cent->lerpOrigin, vec3_origin, + cgs.gameSounds[ cent->currentState.loopSound ] ); + } + } + + + // constant light glow + if ( cent->currentState.constantLight ) + { + int cl; + int i, r, g, b; + + cl = cent->currentState.constantLight; + r = cl & 255; + g = ( cl >> 8 ) & 255; + b = ( cl >> 16 ) & 255; + i = ( ( cl >> 24 ) & 255 ) * 4; + trap_R_AddLightToScene( cent->lerpOrigin, i, r, g, b ); + } + + if( CG_IsTrailSystemValid( ¢->muzzleTS ) ) + { + //FIXME hack to prevent tesla trails reaching too far + if( cent->currentState.eType == ET_BUILDABLE ) + { + vec3_t front, back; + + CG_AttachmentPoint( ¢->muzzleTS->frontAttachment, front ); + CG_AttachmentPoint( ¢->muzzleTS->backAttachment, back ); + + if( Distance( front, back ) > ( TESLAGEN_RANGE * M_ROOT3 ) ) + CG_DestroyTrailSystem( ¢->muzzleTS ); + } + + if( cg.time > cent->muzzleTSDeathTime && CG_IsTrailSystemValid( ¢->muzzleTS ) ) + CG_DestroyTrailSystem( ¢->muzzleTS ); + } +} + + +/* +================== +CG_General +================== +*/ +static void CG_General( centity_t *cent ) +{ + refEntity_t ent; + entityState_t *s1; + + s1 = ¢->currentState; + + // if set to invisible, skip + if( !s1->modelindex ) + return; + + memset( &ent, 0, sizeof( ent ) ); + + // set frame + + ent.frame = s1->frame; + ent.oldframe = ent.frame; + ent.backlerp = 0; + + VectorCopy( cent->lerpOrigin, ent.origin); + VectorCopy( cent->lerpOrigin, ent.oldorigin); + + ent.hModel = cgs.gameModels[ s1->modelindex ]; + + // player model + if( s1->number == cg.snap->ps.clientNum ) + ent.renderfx |= RF_THIRD_PERSON; // only draw from mirrors + + // convert angles to axis + AnglesToAxis( cent->lerpAngles, ent.axis ); + + // add to refresh list + trap_R_AddRefEntityToScene( &ent ); +} + +/* +================== +CG_Speaker + +Speaker entities can automatically play sounds +================== +*/ +static void CG_Speaker( centity_t *cent ) +{ + if( ! cent->currentState.clientNum ) + { // FIXME: use something other than clientNum... + return; // not auto triggering + } + + if( cg.time < cent->miscTime ) + return; + + trap_S_StartSound( NULL, cent->currentState.number, CHAN_ITEM, cgs.gameSounds[ cent->currentState.eventParm ] ); + + // ent->s.frame = ent->wait * 10; + // ent->s.clientNum = ent->random * 10; + cent->miscTime = cg.time + cent->currentState.frame * 100 + cent->currentState.clientNum * 100 * crandom( ); +} + + +//============================================================================ + +/* +=============== +CG_LaunchMissile +=============== +*/ +static void CG_LaunchMissile( centity_t *cent ) +{ + entityState_t *es; + const weaponInfo_t *wi; + particleSystem_t *ps; + trailSystem_t *ts; + weapon_t weapon; + weaponMode_t weaponMode; + + es = ¢->currentState; + + weapon = es->weapon; + if( weapon > WP_NUM_WEAPONS ) + weapon = WP_NONE; + + wi = &cg_weapons[ weapon ]; + weaponMode = es->generic1; + + if( wi->wim[ weaponMode ].missileParticleSystem ) + { + ps = CG_SpawnNewParticleSystem( wi->wim[ weaponMode ].missileParticleSystem ); + + if( CG_IsParticleSystemValid( &ps ) ) + { + CG_SetAttachmentCent( &ps->attachment, cent ); + CG_AttachToCent( &ps->attachment ); + } + } + + if( wi->wim[ weaponMode ].missileTrailSystem ) + { + ts = CG_SpawnNewTrailSystem( wi->wim[ weaponMode ].missileTrailSystem ); + + if( CG_IsTrailSystemValid( &ts ) ) + { + CG_SetAttachmentCent( &ts->frontAttachment, cent ); + CG_AttachToCent( &ts->frontAttachment ); + } + } +} + +/* +=============== +CG_Missile +=============== +*/ +static void CG_Missile( centity_t *cent ) +{ + refEntity_t ent; + entityState_t *es; + const weaponInfo_t *wi; + weapon_t weapon; + weaponMode_t weaponMode; + const weaponInfoMode_t *wim; + + es = ¢->currentState; + + weapon = es->weapon; + if( weapon > WP_NUM_WEAPONS ) + weapon = WP_NONE; + + wi = &cg_weapons[ weapon ]; + weaponMode = es->generic1; + + wim = &wi->wim[ weaponMode ]; + + // calculate the axis + VectorCopy( es->angles, cent->lerpAngles ); + + // add dynamic light + if( wim->missileDlight ) + { + trap_R_AddLightToScene( cent->lerpOrigin, wim->missileDlight, + wim->missileDlightColor[ 0 ], + wim->missileDlightColor[ 1 ], + wim->missileDlightColor[ 2 ] ); + } + + // add missile sound + if( wim->missileSound ) + { + vec3_t velocity; + + BG_EvaluateTrajectoryDelta( ¢->currentState.pos, cg.time, velocity ); + + trap_S_AddLoopingSound( cent->currentState.number, cent->lerpOrigin, velocity, wim->missileSound ); + } + + // create the render entity + memset( &ent, 0, sizeof( ent ) ); + VectorCopy( cent->lerpOrigin, ent.origin ); + VectorCopy( cent->lerpOrigin, ent.oldorigin ); + + if( wim->usesSpriteMissle ) + { + ent.reType = RT_SPRITE; + ent.radius = wim->missileSpriteSize; + ent.rotation = 0; + ent.customShader = wim->missileSprite; + ent.shaderRGBA[ 0 ] = 0xFF; + ent.shaderRGBA[ 1 ] = 0xFF; + ent.shaderRGBA[ 2 ] = 0xFF; + ent.shaderRGBA[ 3 ] = 0xFF; + } + else + { + ent.hModel = wim->missileModel; + ent.renderfx = wim->missileRenderfx | RF_NOSHADOW; + + // convert direction of travel into axis + if( VectorNormalize2( es->pos.trDelta, ent.axis[ 0 ] ) == 0 ) + ent.axis[ 0 ][ 2 ] = 1; + + // spin as it moves + if( es->pos.trType != TR_STATIONARY && wim->missileRotates ) + RotateAroundDirection( ent.axis, cg.time / 4 ); + else + RotateAroundDirection( ent.axis, es->time ); + + if( wim->missileAnimates ) + { + int timeSinceStart = cg.time - es->time; + + if( wim->missileAnimLooping ) + { + ent.frame = wim->missileAnimStartFrame + + (int)( ( timeSinceStart / 1000.0f ) * wim->missileAnimFrameRate ) % + wim->missileAnimNumFrames; + } + else + { + ent.frame = wim->missileAnimStartFrame + + (int)( ( timeSinceStart / 1000.0f ) * wim->missileAnimFrameRate ); + + if( ent.frame > ( wim->missileAnimStartFrame + wim->missileAnimNumFrames ) ) + ent.frame = wim->missileAnimStartFrame + wim->missileAnimNumFrames; + } + } + } + + //only refresh if there is something to display + if( wim->missileSprite || wim->missileModel ) + trap_R_AddRefEntityToScene( &ent ); +} + +/* +=============== +CG_Mover +=============== +*/ +static void CG_Mover( centity_t *cent ) +{ + refEntity_t ent; + entityState_t *s1; + + s1 = ¢->currentState; + + // create the render entity + memset( &ent, 0, sizeof( ent ) ); + VectorCopy( cent->lerpOrigin, ent.origin ); + VectorCopy( cent->lerpOrigin, ent.oldorigin ); + AnglesToAxis( cent->lerpAngles, ent.axis ); + + ent.renderfx = RF_NOSHADOW; + + // flicker between two skins (FIXME?) + ent.skinNum = ( cg.time >> 6 ) & 1; + + // get the model, either as a bmodel or a modelindex + if( s1->solid == SOLID_BMODEL ) + ent.hModel = cgs.inlineDrawModel[ s1->modelindex ]; + else + ent.hModel = cgs.gameModels[ s1->modelindex ]; + + // add to refresh list + trap_R_AddRefEntityToScene( &ent ); + + // add the secondary model + if( s1->modelindex2 ) + { + ent.skinNum = 0; + ent.hModel = cgs.gameModels[ s1->modelindex2 ]; + trap_R_AddRefEntityToScene( &ent ); + } + +} + +/* +=============== +CG_Beam + +Also called as an event +=============== +*/ +void CG_Beam( centity_t *cent ) +{ + refEntity_t ent; + entityState_t *s1; + + s1 = ¢->currentState; + + // create the render entity + memset( &ent, 0, sizeof( ent ) ); + VectorCopy( s1->pos.trBase, ent.origin ); + VectorCopy( s1->origin2, ent.oldorigin ); + AxisClear( ent.axis ); + ent.reType = RT_BEAM; + + ent.renderfx = RF_NOSHADOW; + + // add to refresh list + trap_R_AddRefEntityToScene( &ent ); +} + + +/* +=============== +CG_Portal +=============== +*/ +static void CG_Portal( centity_t *cent ) +{ + refEntity_t ent; + entityState_t *s1; + + s1 = ¢->currentState; + + // create the render entity + memset( &ent, 0, sizeof( ent ) ); + VectorCopy( cent->lerpOrigin, ent.origin ); + VectorCopy( s1->origin2, ent.oldorigin ); + ByteToDir( s1->eventParm, ent.axis[ 0 ] ); + PerpendicularVector( ent.axis[ 1 ], ent.axis[ 0 ] ); + + // negating this tends to get the directions like they want + // we really should have a camera roll value + VectorSubtract( vec3_origin, ent.axis[ 1 ], ent.axis[ 1 ] ); + + CrossProduct( ent.axis[ 0 ], ent.axis[ 1 ], ent.axis[ 2 ] ); + ent.reType = RT_PORTALSURFACE; + ent.oldframe = s1->powerups; + ent.frame = s1->frame; // rotation speed + ent.skinNum = s1->clientNum / 256.0 * 360; // roll offset + + // add to refresh list + trap_R_AddRefEntityToScene( &ent ); +} + +//============================================================================ + +#define SETBOUNDS(v1,v2,r) ((v1)[0]=(-r/2),(v1)[1]=(-r/2),(v1)[2]=(-r/2),\ + (v2)[0]=(r/2),(v2)[1]=(r/2),(v2)[2]=(r/2)) +#define RADIUSSTEP 0.5f + +#define FLARE_OFF 0 +#define FLARE_NOFADE 1 +#define FLARE_TIMEFADE 2 +#define FLARE_REALFADE 3 + +/* +========================= +CG_LightFlare +========================= +*/ +static void CG_LightFlare( centity_t *cent ) +{ + refEntity_t flare; + entityState_t *es; + vec3_t forward, delta; + float len; + trace_t tr; + float maxAngle; + vec3_t mins, maxs, start, end; + float srcRadius, srLocal, ratio = 1.0f; + int entityNum; + + es = ¢->currentState; + + if( cg.renderingThirdPerson ) + entityNum = MAGIC_TRACE_HACK; + else + entityNum = cg.predictedPlayerState.clientNum; + + //don't draw light flares + if( cg_lightFlare.integer == FLARE_OFF ) + return; + + //flare is "off" + if( es->eFlags & EF_NODRAW ) + return; + + CG_Trace( &tr, cg.refdef.vieworg, NULL, NULL, es->angles2, + entityNum, MASK_SHOT ); + + //if there is no los between the view and the flare source + //it definately cannot be seen + if( tr.fraction < 1.0f || tr.allsolid ) + return; + + memset( &flare, 0, sizeof( flare ) ); + + flare.reType = RT_SPRITE; + flare.customShader = cgs.gameShaders[ es->modelindex ]; + flare.shaderRGBA[ 0 ] = 0xFF; + flare.shaderRGBA[ 1 ] = 0xFF; + flare.shaderRGBA[ 2 ] = 0xFF; + flare.shaderRGBA[ 3 ] = 0xFF; + + //flares always drawn before the rest of the scene + flare.renderfx |= RF_DEPTHHACK; + + //bunch of geometry + AngleVectors( es->angles, forward, NULL, NULL ); + VectorCopy( cent->lerpOrigin, flare.origin ); + VectorSubtract( flare.origin, cg.refdef.vieworg, delta ); + len = VectorLength( delta ); + VectorNormalize( delta ); + + //flare is too close to camera to be drawn + if( len < es->generic1 ) + return; + + //don't bother for flares behind the view plane + if( DotProduct( delta, cg.refdef.viewaxis[ 0 ] ) < 0.0 ) + return; + + //only recalculate radius and ratio every three frames + if( !( cg.clientFrame % 2 ) ) + { + //can only see the flare when in front of it + flare.radius = len / es->origin2[ 0 ]; + + if( es->origin2[ 2 ] == 0 ) + srcRadius = srLocal = flare.radius / 2.0f; + else + srcRadius = srLocal = len / es->origin2[ 2 ]; + + maxAngle = es->origin2[ 1 ]; + + if( maxAngle > 0.0f ) + { + float radiusMod = 1.0f - ( 180.0f - RAD2DEG( + acos( DotProduct( delta, forward ) ) ) ) / maxAngle; + + if( radiusMod < 0.0f ) + radiusMod = 0.0f; + + flare.radius *= radiusMod; + } + + if( flare.radius < 0.0f ) + flare.radius = 0.0f; + + VectorMA( flare.origin, -flare.radius, delta, end ); + VectorMA( cg.refdef.vieworg, flare.radius, delta, start ); + + if( cg_lightFlare.integer == FLARE_REALFADE ) + { + //"correct" flares + CG_BiSphereTrace( &tr, cg.refdef.vieworg, end, + 1.0f, srcRadius, entityNum, MASK_SHOT ); + + if( tr.fraction < 1.0f ) + ratio = tr.lateralFraction; + else + ratio = 1.0f; + } + else if( cg_lightFlare.integer == FLARE_TIMEFADE ) + { + //draw timed flares + SETBOUNDS( mins, maxs, srcRadius ); + CG_Trace( &tr, start, mins, maxs, end, + entityNum, MASK_SHOT ); + + if( ( tr.fraction < 1.0f || tr.startsolid ) && cent->lfs.status ) + { + cent->lfs.status = qfalse; + cent->lfs.lastTime = cg.time; + } + else if( ( tr.fraction == 1.0f && !tr.startsolid ) && !cent->lfs.status ) + { + cent->lfs.status = qtrue; + cent->lfs.lastTime = cg.time; + } + + //fade flare up + if( cent->lfs.status ) + { + if( cent->lfs.lastTime + es->time > cg.time ) + ratio = (float)( cg.time - cent->lfs.lastTime ) / es->time; + } + + //fade flare down + if( !cent->lfs.status ) + { + if( cent->lfs.lastTime + es->time > cg.time ) + { + ratio = (float)( cg.time - cent->lfs.lastTime ) / es->time; + ratio = 1.0f - ratio; + } + else + ratio = 0.0f; + } + } + else if( cg_lightFlare.integer == FLARE_NOFADE ) + { + //draw nofade flares + SETBOUNDS( mins, maxs, srcRadius ); + CG_Trace( &tr, start, mins, maxs, end, + entityNum, MASK_SHOT ); + + //flare source occluded + if( ( tr.fraction < 1.0f || tr.startsolid ) ) + ratio = 0.0f; + } + } + else + { + ratio = cent->lfs.lastRatio; + flare.radius = cent->lfs.lastRadius; + } + + cent->lfs.lastRatio = ratio; + cent->lfs.lastRadius = flare.radius; + + if( ratio < 1.0f ) + { + flare.radius *= ratio; + flare.shaderRGBA[ 3 ] = (byte)( (float)flare.shaderRGBA[ 3 ] * ratio ); + } + + if( flare.radius <= 0.0f ) + return; + + trap_R_AddRefEntityToScene( &flare ); +} + +/* +========================= +CG_Lev2ZapChain +========================= +*/ +static void CG_Lev2ZapChain( centity_t *cent ) +{ + int i; + entityState_t *es; + centity_t *source = NULL, *target = NULL; + + es = ¢->currentState; + + for( i = 0; i <= 2; i++ ) + { + switch( i ) + { + case 0: + if( es->time <= 0 ) + continue; + + source = &cg_entities[ es->powerups ]; + target = &cg_entities[ es->time ]; + break; + + case 1: + if( es->time2 <= 0 ) + continue; + + source = &cg_entities[ es->time ]; + target = &cg_entities[ es->time2 ]; + break; + + case 2: + if( es->constantLight <= 0 ) + continue; + + source = &cg_entities[ es->time2 ]; + target = &cg_entities[ es->constantLight ]; + break; + } + + if( !CG_IsTrailSystemValid( ¢->level2ZapTS[ i ] ) ) + cent->level2ZapTS[ i ] = CG_SpawnNewTrailSystem( cgs.media.level2ZapTS ); + + if( CG_IsTrailSystemValid( ¢->level2ZapTS[ i ] ) ) + { + CG_SetAttachmentCent( ¢->level2ZapTS[ i ]->frontAttachment, source ); + CG_SetAttachmentCent( ¢->level2ZapTS[ i ]->backAttachment, target ); + CG_AttachToCent( ¢->level2ZapTS[ i ]->frontAttachment ); + CG_AttachToCent( ¢->level2ZapTS[ i ]->backAttachment ); + } + } +} + +/* +========================= +CG_AdjustPositionForMover + +Also called by client movement prediction code +========================= +*/ +void CG_AdjustPositionForMover( const vec3_t in, int moverNum, int fromTime, int toTime, vec3_t out ) +{ + centity_t *cent; + vec3_t oldOrigin, origin, deltaOrigin; + vec3_t oldAngles, angles, deltaAngles; + + if( moverNum <= 0 || moverNum >= ENTITYNUM_MAX_NORMAL ) + { + VectorCopy( in, out ); + return; + } + + cent = &cg_entities[ moverNum ]; + + if( cent->currentState.eType != ET_MOVER ) + { + VectorCopy( in, out ); + return; + } + + BG_EvaluateTrajectory( ¢->currentState.pos, fromTime, oldOrigin ); + BG_EvaluateTrajectory( ¢->currentState.apos, fromTime, oldAngles ); + + BG_EvaluateTrajectory( ¢->currentState.pos, toTime, origin ); + BG_EvaluateTrajectory( ¢->currentState.apos, toTime, angles ); + + VectorSubtract( origin, oldOrigin, deltaOrigin ); + VectorSubtract( angles, oldAngles, deltaAngles ); + + VectorAdd( in, deltaOrigin, out ); + + // FIXME: origin change when on a rotating object +} + + +/* +============================= +CG_InterpolateEntityPosition +============================= +*/ +static void CG_InterpolateEntityPosition( centity_t *cent ) +{ + vec3_t current, next; + float f; + + // it would be an internal error to find an entity that interpolates without + // a snapshot ahead of the current one + if( cg.nextSnap == NULL ) + CG_Error( "CG_InterpoateEntityPosition: cg.nextSnap == NULL" ); + + f = cg.frameInterpolation; + + // this will linearize a sine or parabolic curve, but it is important + // to not extrapolate player positions if more recent data is available + BG_EvaluateTrajectory( ¢->currentState.pos, cg.snap->serverTime, current ); + BG_EvaluateTrajectory( ¢->nextState.pos, cg.nextSnap->serverTime, next ); + + cent->lerpOrigin[ 0 ] = current[ 0 ] + f * ( next[ 0 ] - current[ 0 ] ); + cent->lerpOrigin[ 1 ] = current[ 1 ] + f * ( next[ 1 ] - current[ 1 ] ); + cent->lerpOrigin[ 2 ] = current[ 2 ] + f * ( next[ 2 ] - current[ 2 ] ); + + BG_EvaluateTrajectory( ¢->currentState.apos, cg.snap->serverTime, current ); + BG_EvaluateTrajectory( ¢->nextState.apos, cg.nextSnap->serverTime, next ); + + cent->lerpAngles[ 0 ] = LerpAngle( current[ 0 ], next[ 0 ], f ); + cent->lerpAngles[ 1 ] = LerpAngle( current[ 1 ], next[ 1 ], f ); + cent->lerpAngles[ 2 ] = LerpAngle( current[ 2 ], next[ 2 ], f ); + +} + +/* +=============== +CG_CalcEntityLerpPositions + +=============== +*/ +static void CG_CalcEntityLerpPositions( centity_t *cent ) +{ + // this will be set to how far forward projectiles will be extrapolated + int timeshift = 0; + + // if this player does not want to see extrapolated players + if( !cg_smoothClients.integer ) + { + // make sure the clients use TR_INTERPOLATE + if( cent->currentState.number < MAX_CLIENTS ) + { + cent->currentState.pos.trType = TR_INTERPOLATE; + cent->nextState.pos.trType = TR_INTERPOLATE; + } + } + + if( cent->interpolate && cent->currentState.pos.trType == TR_INTERPOLATE ) + { + CG_InterpolateEntityPosition( cent ); + return; + } + + // first see if we can interpolate between two snaps for + // linear extrapolated clients + if( cent->interpolate && cent->currentState.pos.trType == TR_LINEAR_STOP && + cent->currentState.number < MAX_CLIENTS ) + { + CG_InterpolateEntityPosition( cent ); + return; + } + + if( cg_projectileNudge.integer > 0 && + cent->currentState.eType == ET_MISSILE && + !( cg.snap->ps.pm_flags & PMF_FOLLOW ) ) + { + timeshift = cg.ping; + } + + // just use the current frame and evaluate as best we can + BG_EvaluateTrajectory( ¢->currentState.pos, + ( cg.time + timeshift ), cent->lerpOrigin ); + BG_EvaluateTrajectory( ¢->currentState.apos, + ( cg.time + timeshift ), cent->lerpAngles ); + + if( timeshift ) + { + trace_t tr; + vec3_t lastOrigin; + + BG_EvaluateTrajectory( ¢->currentState.pos, cg.time, lastOrigin ); + + CG_Trace( &tr, lastOrigin, vec3_origin, vec3_origin, cent->lerpOrigin, + cent->currentState.number, MASK_SHOT ); + + // don't let the projectile go through the floor + if( tr.fraction < 1.0f ) + VectorLerp( tr.fraction, lastOrigin, cent->lerpOrigin, cent->lerpOrigin ); + } + + // adjust for riding a mover if it wasn't rolled into the predicted + // player state + if( cent != &cg.predictedPlayerEntity ) + { + CG_AdjustPositionForMover( cent->lerpOrigin, cent->currentState.groundEntityNum, + cg.snap->serverTime, cg.time, cent->lerpOrigin ); + } +} + + +/* +=============== +CG_CEntityPVSEnter + +=============== +*/ +static void CG_CEntityPVSEnter( centity_t *cent ) +{ + entityState_t *es = ¢->currentState; + + if( cg_debugPVS.integer ) + CG_Printf( "Entity %d entered PVS\n", cent->currentState.number ); + + switch( es->eType ) + { + case ET_MISSILE: + CG_LaunchMissile( cent ); + break; + } + + //clear any particle systems from previous uses of this centity_t + cent->muzzlePS = NULL; + cent->muzzlePsTrigger = qfalse; + cent->jetPackPS = NULL; + cent->jetPackState = JPS_OFF; + cent->buildablePS = NULL; + cent->entityPS = NULL; + cent->entityPSMissing = qfalse; + + //make sure that the buildable animations are in a consistent state + //when a buildable enters the PVS + cent->buildableAnim = cent->lerpFrame.animationNumber = BANIM_NONE; + cent->oldBuildableAnim = es->legsAnim; +} + + +/* +=============== +CG_CEntityPVSLeave + +=============== +*/ +static void CG_CEntityPVSLeave( centity_t *cent ) +{ + int i; + entityState_t *es = ¢->currentState; + + if( cg_debugPVS.integer ) + CG_Printf( "Entity %d left PVS\n", cent->currentState.number ); + + switch( es->eType ) + { + case ET_LEV2_ZAP_CHAIN: + for( i = 0; i <= 2; i++ ) + { + if( CG_IsTrailSystemValid( ¢->level2ZapTS[ i ] ) ) + CG_DestroyTrailSystem( ¢->level2ZapTS[ i ] ); + } + break; + } +} + + +/* +=============== +CG_AddCEntity + +=============== +*/ +static void CG_AddCEntity( centity_t *cent ) +{ + // event-only entities will have been dealt with already + if( cent->currentState.eType >= ET_EVENTS ) + return; + + // calculate the current origin + CG_CalcEntityLerpPositions( cent ); + + // add automatic effects + CG_EntityEffects( cent ); + + switch( cent->currentState.eType ) + { + default: + CG_Error( "Bad entity type: %i\n", cent->currentState.eType ); + break; + + case ET_INVISIBLE: + case ET_PUSH_TRIGGER: + case ET_TELEPORT_TRIGGER: + break; + + case ET_GENERAL: + CG_General( cent ); + break; + + case ET_CORPSE: + CG_Corpse( cent ); + break; + + case ET_PLAYER: + CG_Player( cent ); + break; + + case ET_BUILDABLE: + CG_Buildable( cent ); + break; + + case ET_MISSILE: + CG_Missile( cent ); + break; + + case ET_MOVER: + CG_Mover( cent ); + break; + + case ET_BEAM: + CG_Beam( cent ); + break; + + case ET_PORTAL: + CG_Portal( cent ); + break; + + case ET_SPEAKER: + CG_Speaker( cent ); + break; + + case ET_PARTICLE_SYSTEM: + CG_ParticleSystemEntity( cent ); + break; + + case ET_ANIMMAPOBJ: + CG_AnimMapObj( cent ); + break; + + case ET_MODELDOOR: + CG_ModelDoor( cent ); + break; + + case ET_LIGHTFLARE: + CG_LightFlare( cent ); + break; + + case ET_LEV2_ZAP_CHAIN: + CG_Lev2ZapChain( cent ); + break; + } +} + +/* +=============== +CG_AddPacketEntities + +=============== +*/ +void CG_AddPacketEntities( void ) +{ + int num; + centity_t *cent; + playerState_t *ps; + + // set cg.frameInterpolation + if( cg.nextSnap ) + { + int delta; + + delta = ( cg.nextSnap->serverTime - cg.snap->serverTime ); + + if( delta == 0 ) + cg.frameInterpolation = 0; + else + cg.frameInterpolation = (float)( cg.time - cg.snap->serverTime ) / delta; + } + else + { + cg.frameInterpolation = 0; // actually, it should never be used, because + // no entities should be marked as interpolating + } + + // the auto-rotating items will all have the same axis + cg.autoAngles[ 0 ] = 0; + cg.autoAngles[ 1 ] = ( cg.time & 2047 ) * 360 / 2048.0; + cg.autoAngles[ 2 ] = 0; + + cg.autoAnglesFast[ 0 ] = 0; + cg.autoAnglesFast[ 1 ] = ( cg.time & 1023 ) * 360 / 1024.0f; + cg.autoAnglesFast[ 2 ] = 0; + + AnglesToAxis( cg.autoAngles, cg.autoAxis ); + AnglesToAxis( cg.autoAnglesFast, cg.autoAxisFast ); + + // generate and add the entity from the playerstate + ps = &cg.predictedPlayerState; + BG_PlayerStateToEntityState( ps, &cg.predictedPlayerEntity.currentState, qfalse ); + cg.predictedPlayerEntity.valid = qtrue; + CG_AddCEntity( &cg.predictedPlayerEntity ); + + // lerp the non-predicted value for lightning gun origins + CG_CalcEntityLerpPositions( &cg_entities[ cg.snap->ps.clientNum ] ); + + // scanner + CG_UpdateEntityPositions( ); + + for( num = 0; num < MAX_GENTITIES; num++ ) + cg_entities[ num ].valid = qfalse; + + // add each entity sent over by the server + for( num = 0; num < cg.snap->numEntities; num++ ) + { + cent = &cg_entities[ cg.snap->entities[ num ].number ]; + cent->valid = qtrue; + } + + for( num = 0; num < MAX_GENTITIES; num++ ) + { + cent = &cg_entities[ num ]; + + if( cent->valid && !cent->oldValid ) + CG_CEntityPVSEnter( cent ); + else if( !cent->valid && cent->oldValid ) + CG_CEntityPVSLeave( cent ); + + cent->oldValid = cent->valid; + } + + // add each entity sent over by the server + for( num = 0; num < cg.snap->numEntities; num++ ) + { + cent = &cg_entities[ cg.snap->entities[ num ].number ]; + CG_AddCEntity( cent ); + } + + //make an attempt at drawing bounding boxes of selected entity types + if( cg_drawBBOX.integer ) + { + for( num = 0; num < cg.snap->numEntities; num++ ) + { + float x, zd, zu; + vec3_t mins, maxs; + entityState_t *es; + + cent = &cg_entities[ cg.snap->entities[ num ].number ]; + es = ¢->currentState; + + switch( es->eType ) + { + case ET_BUILDABLE: + case ET_MISSILE: + case ET_CORPSE: + x = ( es->solid & 255 ); + zd = ( ( es->solid >> 8 ) & 255 ); + zu = ( ( es->solid >> 16 ) & 255 ) - 32; + + mins[ 0 ] = mins[ 1 ] = -x; + maxs[ 0 ] = maxs[ 1 ] = x; + mins[ 2 ] = -zd; + maxs[ 2 ] = zu; + + CG_DrawBoundingBox( cent->lerpOrigin, mins, maxs ); + break; + + default: + break; + } + } + } +} + |