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cg_camera.cpp
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/*
This file is part of Jedi Academy.
Jedi Academy 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.
Jedi Academy 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 Jedi Academy. If not, see <http://www.gnu.org/licenses/>.
*/
// Copyright 2001-2013 Raven Software
//Client camera controls for cinematics
// this line must stay at top so the whole PCH thing works...
#include "cg_headers.h"
#include "cg_media.h"
#include "../game/g_roff.h"
bool in_camera = false;
camera_t client_camera={};
extern qboolean player_locked;
extern gentity_t *G_Find (gentity_t *from, int fieldofs, const char *match);
extern void G_UseTargets (gentity_t *ent, gentity_t *activator);
void CGCam_FollowDisable( void );
void CGCam_TrackDisable( void );
void CGCam_Distance( float distance, qboolean initLerp );
void CGCam_DistanceDisable( void );
extern int CG_CalcFOVFromX( float fov_x );
extern void WP_SaberCatch( gentity_t *self, gentity_t *saber, qboolean switchToSaber );
/*
TODO:
CloseUp, FullShot & Longshot commands:
camera( CLOSEUP, <entity targetname>, angles(pitch yaw roll) )
Will find the ent, apply angle offset to their head forward(minus pitch),
get a preset distance away and set the FOV. Trace to point, if less than
1.0, put it there and open up FOV accordingly.
Be sure to frame it so that eyespot and tag_head are positioned at proper
places in the frame - ie: eyespot not in center, but not closer than 1/4
screen width to the top...?
*/
/*
-------------------------
CGCam_Init
-------------------------
*/
void CGCam_Init( void )
{
extern qboolean qbVidRestartOccured;
if (!qbVidRestartOccured)
{
memset( &client_camera, 0, sizeof ( camera_t ) );
}
}
/*
-------------------------
CGCam_Enable
-------------------------
*/
extern void CG_CalcVrect(void);
void CGCam_Enable( void )
{
client_camera.bar_alpha = 0.0f;
client_camera.bar_time = cg.time;
client_camera.bar_alpha_source = 0.0f;
client_camera.bar_alpha_dest = 1.0f;
client_camera.bar_height_source = 0.0f;
client_camera.bar_height_dest = 480/10;
client_camera.bar_height = 0.0f;
client_camera.info_state |= CAMERA_BAR_FADING;
client_camera.FOV = CAMERA_DEFAULT_FOV;
client_camera.FOV2 = CAMERA_DEFAULT_FOV;
in_camera = true;
client_camera.next_roff_time = 0;
if ( &g_entities[0] && g_entities[0].client )
{
//Player zero not allowed to do anything
VectorClear( g_entities[0].client->ps.velocity );
g_entities[0].contents = 0;
if ( cg.zoomMode )
{
// need to shut off some form of zooming
cg.zoomMode = 0;
}
if ( g_entities[0].client->ps.saberInFlight && g_entities[0].client->ps.saber[0].Active() )
{//saber is out
gentity_t *saberent = &g_entities[g_entities[0].client->ps.saberEntityNum];
if ( saberent )
{
WP_SaberCatch( &g_entities[0], saberent, qfalse );
}
}
for ( int i = 0; i < NUM_FORCE_POWERS; i++ )
{//deactivate any active force powers
g_entities[0].client->ps.forcePowerDuration[i] = 0;
extern void WP_ForcePowerStop( gentity_t *self, forcePowers_t forcePower );
if ( g_entities[0].client->ps.forcePowerDuration[i] || (g_entities[0].client->ps.forcePowersActive&( 1 << i )) )
{
WP_ForcePowerStop( &g_entities[0], (forcePowers_t)i );
}
}
}
}
/*
-------------------------
CGCam_Disable
-------------------------
*/
void CGCam_Disable( void )
{
in_camera = false;
client_camera.bar_alpha = 1.0f;
client_camera.bar_time = cg.time;
client_camera.bar_alpha_source = 1.0f;
client_camera.bar_alpha_dest = 0.0f;
client_camera.bar_height_source = 480/10;
client_camera.bar_height_dest = 0.0f;
client_camera.info_state |= CAMERA_BAR_FADING;
if ( &g_entities[0] && g_entities[0].client )
{
g_entities[0].contents = CONTENTS_BODY;//MASK_PLAYERSOLID;
}
gi.SendServerCommand( 0, "cts");
//if ( cg_skippingcin.integer )
{//We're skipping the cinematic and it's over now
gi.cvar_set("timescale", "1");
gi.cvar_set("skippingCinematic", "0");
}
//we just came out of camera, so update cg.refdef.vieworg out of the camera's origin so the snapshot will know our new ori
VectorCopy( g_entities[0].currentOrigin, cg.refdef.vieworg);
VectorCopy( g_entities[0].client->ps.viewangles, cg.refdefViewAngles );
}
/*
-------------------------
CGCam_SetPosition
-------------------------
*/
void CGCam_SetPosition( vec3_t org )
{
VectorCopy( org, client_camera.origin );
VectorCopy( client_camera.origin, cg.refdef.vieworg );
}
/*
-------------------------
CGCam_Move
-------------------------
*/
void CGCam_Move( vec3_t dest, float duration )
{
if ( client_camera.info_state & CAMERA_ROFFING )
{
client_camera.info_state &= ~CAMERA_ROFFING;
}
CGCam_TrackDisable();
CGCam_DistanceDisable();
if ( !duration )
{
client_camera.info_state &= ~CAMERA_MOVING;
CGCam_SetPosition( dest );
return;
}
client_camera.info_state |= CAMERA_MOVING;
VectorCopy( dest, client_camera.origin2 );
client_camera.move_duration = duration;
client_camera.move_time = cg.time;
}
/*
-------------------------
CGCam_SetAngles
-------------------------
*/
void CGCam_SetAngles( vec3_t ang )
{
VectorCopy( ang, client_camera.angles );
VectorCopy(client_camera.angles, cg.refdefViewAngles );
}
/*
-------------------------
CGCam_Pan
-------------------------
*/
void CGCam_Pan( vec3_t dest, vec3_t panDirection, float duration )
{
//vec3_t panDirection = {0, 0, 0};
int i;
float delta1 , delta2;
CGCam_FollowDisable();
CGCam_DistanceDisable();
if ( !duration )
{
CGCam_SetAngles( dest );
client_camera.info_state &= ~CAMERA_PANNING;
return;
}
//FIXME: make the dest an absolute value, and pass in a
//panDirection as well. If a panDirection's axis value is
//zero, find the shortest difference for that axis.
//Store the delta in client_camera.angles2.
for( i = 0; i < 3; i++ )
{
dest[i] = AngleNormalize360( dest[i] );
delta1 = dest[i] - AngleNormalize360( client_camera.angles[i] );
if ( delta1 < 0 )
{
delta2 = delta1 + 360;
}
else
{
delta2 = delta1 - 360;
}
if ( !panDirection[i] )
{//Didn't specify a direction, pick shortest
if( Q_fabs(delta1) < Q_fabs(delta2) )
{
client_camera.angles2[i] = delta1;
}
else
{
client_camera.angles2[i] = delta2;
}
}
else if ( panDirection[i] < 0 )
{
if( delta1 < 0 )
{
client_camera.angles2[i] = delta1;
}
else if( delta1 > 0 )
{
client_camera.angles2[i] = delta2;
}
else
{//exact
client_camera.angles2[i] = 0;
}
}
else if ( panDirection[i] > 0 )
{
if( delta1 > 0 )
{
client_camera.angles2[i] = delta1;
}
else if( delta1 < 0 )
{
client_camera.angles2[i] = delta2;
}
else
{//exact
client_camera.angles2[i] = 0;
}
}
}
//VectorCopy( dest, client_camera.angles2 );
client_camera.info_state |= CAMERA_PANNING;
client_camera.pan_duration = duration;
client_camera.pan_time = cg.time;
}
/*
-------------------------
CGCam_SetRoll
-------------------------
*/
void CGCam_SetRoll( float roll )
{
client_camera.angles[2] = roll;
}
/*
-------------------------
CGCam_Roll
-------------------------
*/
void CGCam_Roll( float dest, float duration )
{
if ( !duration )
{
CGCam_SetRoll( dest );
return;
}
//FIXME/NOTE: this will override current panning!!!
client_camera.info_state |= CAMERA_PANNING;
VectorCopy( client_camera.angles, client_camera.angles2 );
client_camera.angles2[2] = AngleDelta( dest, client_camera.angles[2] );
client_camera.pan_duration = duration;
client_camera.pan_time = cg.time;
}
/*
-------------------------
CGCam_SetFOV
-------------------------
*/
void CGCam_SetFOV( float FOV )
{
client_camera.FOV = FOV;
}
/*
-------------------------
CGCam_Zoom
-------------------------
*/
void CGCam_Zoom( float FOV, float duration )
{
if ( !duration )
{
CGCam_SetFOV( FOV );
return;
}
client_camera.info_state |= CAMERA_ZOOMING;
client_camera.FOV_time = cg.time;
client_camera.FOV2 = FOV;
client_camera.FOV_duration = duration;
}
void CGCam_Zoom2( float FOV, float FOV2, float duration )
{
if ( !duration )
{
CGCam_SetFOV( FOV2 );
return;
}
client_camera.info_state |= CAMERA_ZOOMING;
client_camera.FOV_time = cg.time;
client_camera.FOV = FOV;
client_camera.FOV2 = FOV2;
client_camera.FOV_duration = duration;
}
void CGCam_ZoomAccel( float initialFOV, float fovVelocity, float fovAccel, float duration)
{
if ( !duration )
{
return;
}
client_camera.info_state |= CAMERA_ACCEL;
client_camera.FOV_time = cg.time;
client_camera.FOV2 = initialFOV;
client_camera.FOV_vel = fovVelocity;
client_camera.FOV_acc = fovAccel;
client_camera.FOV_duration = duration;
}
/*
-------------------------
CGCam_Fade
-------------------------
*/
void CGCam_SetFade( vec4_t dest )
{//Instant completion
client_camera.info_state &= ~CAMERA_FADING;
client_camera.fade_duration = 0;
Vector4Copy( dest, client_camera.fade_source );
Vector4Copy( dest, client_camera.fade_color );
}
/*
-------------------------
CGCam_Fade
-------------------------
*/
void CGCam_Fade( vec4_t source, vec4_t dest, float duration )
{
if ( !duration )
{
CGCam_SetFade( dest );
return;
}
Vector4Copy( source, client_camera.fade_source );
Vector4Copy( dest, client_camera.fade_dest );
client_camera.fade_duration = duration;
client_camera.fade_time = cg.time;
client_camera.info_state |= CAMERA_FADING;
}
void CGCam_FollowDisable( void )
{
client_camera.info_state &= ~CAMERA_FOLLOWING;
client_camera.cameraGroup[0] = 0;
client_camera.cameraGroupZOfs = 0;
client_camera.cameraGroupTag[0] = 0;
}
void CGCam_TrackDisable( void )
{
client_camera.info_state &= ~CAMERA_TRACKING;
client_camera.trackEntNum = ENTITYNUM_WORLD;
}
void CGCam_DistanceDisable( void )
{
client_camera.distance = 0;
}
/*
-------------------------
CGCam_Follow
-------------------------
*/
void CGCam_Follow( const char *cameraGroup, float speed, float initLerp )
{
//Clear any previous
CGCam_FollowDisable();
if(!cameraGroup || !cameraGroup[0])
{
return;
}
if ( Q_stricmp("none", (char *)cameraGroup) == 0 )
{//Turn off all aiming
return;
}
if ( Q_stricmp("NULL", (char *)cameraGroup) == 0 )
{//Turn off all aiming
return;
}
//NOTE: if this interrupts a pan before it's done, need to copy the cg.refdef.viewAngles to the camera.angles!
client_camera.info_state |= CAMERA_FOLLOWING;
client_camera.info_state &= ~CAMERA_PANNING;
//NULL terminate last char in case they type a name too long
Q_strncpyz( client_camera.cameraGroup, cameraGroup, sizeof(client_camera.cameraGroup) );
if ( speed )
{
client_camera.followSpeed = speed;
}
else
{
client_camera.followSpeed = 100.0f;
}
if ( initLerp )
{
client_camera.followInitLerp = qtrue;
}
else
{
client_camera.followInitLerp = qfalse;
}
}
/*
-------------------------
Q3_CameraAutoAim
Keeps camera pointed at an entity, usually will be a misc_camera_focus
misc_camera_focus can be on a track that stays closest to it's subjects on that
path (like Q3_CameraAutoTrack) or is can simply always put itself between it's subjects.
misc_camera_focus can also set FOV/camera dist needed to keep the subjects in frame
-------------------------
*/
void CG_CameraAutoAim( const char *name )
{
/*
gentity_t *aimEnt = NULL;
//Clear any previous
CGCam_FollowDisable();
if(Q_stricmp("none", (char *)name) == 0)
{//Turn off all aiming
return;
}
aimEnt = G_Find(NULL, FOFS(targetname), (char *)name);
if(!aimEnt)
{
gi.Printf(S_COLOR_RED"ERROR: %s camera aim target not found\n", name);
return;
}
//Lerp time...
//aimEnt->aimDebounceTime = level.time;//FIXME: over time
client_camera.aimEntNum = aimEnt->s.number;
CGCam_Follow( aimEnt->cameraGroup, aimEnt->speed, aimEnt->spawnflags&1 );
*/
}
/*
-------------------------
CGCam_Track
-------------------------
*/
void CGCam_Track( const char *trackName, float speed, float initLerp )
{
gentity_t *trackEnt = NULL;
CGCam_TrackDisable();
if(Q_stricmp("none", (char *)trackName) == 0)
{//turn off tracking
return;
}
//NOTE: if this interrupts a move before it's done, need to copy the cg.refdef.vieworg to the camera.origin!
//This will find a path_corner now, not a misc_camera_track
trackEnt = G_Find(NULL, FOFS(targetname), (char *)trackName);
if ( !trackEnt )
{
gi.Printf(S_COLOR_RED"ERROR: %s camera track target not found\n", trackName);
return;
}
client_camera.info_state |= CAMERA_TRACKING;
client_camera.info_state &= ~CAMERA_MOVING;
client_camera.trackEntNum = trackEnt->s.number;
client_camera.initSpeed = speed/10.0f;
client_camera.speed = speed;
client_camera.nextTrackEntUpdateTime = cg.time;
if ( initLerp )
{
client_camera.trackInitLerp = qtrue;
}
else
{
client_camera.trackInitLerp = qfalse;
}
/*
if ( client_camera.info_state & CAMERA_FOLLOWING )
{//Used to snap angles? Do what...?
}
*/
//Set a moveDir
VectorSubtract( trackEnt->currentOrigin, client_camera.origin, client_camera.moveDir );
if ( !client_camera.trackInitLerp )
{//want to snap to first position
//Snap to trackEnt's origin
VectorCopy( trackEnt->currentOrigin, client_camera.origin );
//Set new moveDir if trackEnt has a next path_corner
//Possible that track has no next point, in which case we won't be moving anyway
if ( trackEnt->target && trackEnt->target[0] )
{
gentity_t *newTrackEnt = G_Find( NULL, FOFS(targetname), trackEnt->target );
if ( newTrackEnt )
{
VectorSubtract( newTrackEnt->currentOrigin, client_camera.origin, client_camera.moveDir );
}
}
}
VectorNormalize( client_camera.moveDir );
}
/*
-------------------------
Q3_CameraAutoTrack
Keeps camera a certain distance from target entity but on the specified CameraPath
The distance can be set in a script or derived from a misc_camera_focus.
Dist will interpolate when changed, can also set acceleration/deceleration values.
FOV will also interpolate.
CameraPath might be a MAX path or perhaps a series of path_corners on the map itself
-------------------------
*/
void CG_CameraAutoTrack( const char *name )
{
/*
gentity_t *trackEnt = NULL;
CGCam_TrackDisable();
if(Q_stricmp("none", (char *)name) == 0)
{//turn off tracking
return;
}
//This will find a path_corner now, not a misc_camera_track
trackEnt = G_Find(NULL, FOFS(targetname), (char *)name);
if(!trackEnt)
{
gi.Printf(S_COLOR_RED"ERROR: %s camera track target not found\n", name);
return;
}
//FIXME: last arg will be passed in
CGCam_Track( trackEnt->s.number, trackEnt->speed, qfalse );
//FIXME: this will be a seperate call
CGCam_Distance( trackEnt->radius, qtrue);
*/
}
/*
-------------------------
CGCam_Distance
-------------------------
*/
void CGCam_Distance( float distance, float initLerp )
{
client_camera.distance = distance;
if ( initLerp )
{
client_camera.distanceInitLerp = qtrue;
}
else
{
client_camera.distanceInitLerp = qfalse;
}
}
//========================================================================================
void CGCam_FollowUpdate ( void )
{
vec3_t center, dir, cameraAngles, vec, focus[MAX_CAMERA_GROUP_SUBJECTS];//No more than 16 subjects in a cameraGroup
gentity_t *from = NULL;
centity_t *fromCent = NULL;
int num_subjects = 0, i;
qboolean focused = qfalse;
if ( client_camera.cameraGroup[0] )
{
//Stay centered in my cameraGroup, if I have one
while( NULL != (from = G_Find(from, FOFS(cameraGroup), client_camera.cameraGroup)))
{
/*
if ( from->s.number == client_camera.aimEntNum )
{//This is the misc_camera_focus, we'll be removing this ent altogether eventually
continue;
}
*/
if ( num_subjects >= MAX_CAMERA_GROUP_SUBJECTS )
{
gi.Printf(S_COLOR_RED"ERROR: Too many subjects in shot composition %s", client_camera.cameraGroup);
break;
}
fromCent = &cg_entities[from->s.number];
if ( !fromCent )
{
continue;
}
focused = qfalse;
if ( from->client && client_camera.cameraGroupTag[0] && fromCent->gent->ghoul2.size() )
{
int newBolt = gi.G2API_AddBolt( &fromCent->gent->ghoul2[from->playerModel], client_camera.cameraGroupTag );
if ( newBolt != -1 )
{
mdxaBone_t boltMatrix;
vec3_t fromAngles = {0,from->client->ps.legsYaw,0};
gi.G2API_GetBoltMatrix( fromCent->gent->ghoul2, from->playerModel, newBolt, &boltMatrix, fromAngles, fromCent->lerpOrigin, cg.time, cgs.model_draw, fromCent->currentState.modelScale );
gi.G2API_GiveMeVectorFromMatrix( boltMatrix, ORIGIN, focus[num_subjects] );
focused = qtrue;
}
}
if ( !focused )
{
if ( from->s.pos.trType != TR_STATIONARY )
// if ( from->s.pos.trType == TR_INTERPOLATE )
{//use interpolated origin?
if ( !VectorCompare( vec3_origin, fromCent->lerpOrigin ) )
{//hunh? Somehow we've never seen this gentity on the client, so there is no lerpOrigin, so cheat over to the game and use the currentOrigin
VectorCopy( from->currentOrigin, focus[num_subjects] );
}
else
{
VectorCopy( fromCent->lerpOrigin, focus[num_subjects] );
}
}
else
{
VectorCopy(from->currentOrigin, focus[num_subjects]);
}
//FIXME: make a list here of their s.numbers instead so we can do other stuff with the list below
if ( from->client )
{//Track to their eyes - FIXME: maybe go off a tag?
//FIXME:
//Based on FOV and distance to subject from camera, pick the point that
//keeps eyes 3/4 up from bottom of screen... what about bars?
focus[num_subjects][2] += from->client->ps.viewheight;
}
}
if ( client_camera.cameraGroupZOfs )
{
focus[num_subjects][2] += client_camera.cameraGroupZOfs;
}
num_subjects++;
}
if ( !num_subjects ) // Bad cameragroup
{
#ifndef FINAL_BUILD
gi.Printf(S_COLOR_RED"ERROR: Camera Focus unable to locate cameragroup: %s\n", client_camera.cameraGroup);
#endif
return;
}
//Now average all points
VectorCopy( focus[0], center );
for( i = 1; i < num_subjects; i++ )
{
VectorAdd( focus[i], center, center );
}
VectorScale( center, 1.0f/((float)num_subjects), center );
}
else
{
return;
}
//Need to set a speed to keep a distance from
//the subject- fixme: only do this if have a distance
//set
VectorSubtract( client_camera.subjectPos, center, vec );
client_camera.subjectSpeed = VectorLengthSquared( vec ) * 100.0f / cg.frametime;
/*
if ( !cg_skippingcin.integer )
{
Com_Printf( S_COLOR_RED"org: %s\n", vtos(center) );
}
*/
VectorCopy( center, client_camera.subjectPos );
VectorSubtract( center, cg.refdef.vieworg, dir );//can't use client_camera.origin because it's not updated until the end of the move.
//Get desired angle
vectoangles(dir, cameraAngles);
if ( client_camera.followInitLerp )
{//Lerping
float frac = cg.frametime/100.0f * client_camera.followSpeed/100.f;
for( i = 0; i < 3; i++ )
{
cameraAngles[i] = AngleNormalize180( cameraAngles[i] );
cameraAngles[i] = AngleNormalize180( client_camera.angles[i] + frac * AngleNormalize180(cameraAngles[i] - client_camera.angles[i]) );
cameraAngles[i] = AngleNormalize180( cameraAngles[i] );
}
#if 0
Com_Printf( "%s\n", vtos(cameraAngles) );
#endif
}
else
{//Snapping, should do this first time if follow_lerp_to_start_duration is zero
//will lerp from this point on
client_camera.followInitLerp = qtrue;
for( i = 0; i < 3; i++ )
{//normalize so that when we start lerping, it doesn't freak out
cameraAngles[i] = AngleNormalize180( cameraAngles[i] );
}
//So tracker doesn't move right away thinking the first angle change
//is the subject moving... FIXME: shouldn't set this until lerp done OR snapped?
client_camera.subjectSpeed = 0;
}
//Point camera to lerp angles
/*
if ( !cg_skippingcin.integer )
{
Com_Printf( "ang: %s\n", vtos(cameraAngles) );
}
*/
VectorCopy( cameraAngles, client_camera.angles );
}
void CGCam_TrackEntUpdate ( void )
{//FIXME: only do every 100 ms
gentity_t *trackEnt = NULL;
gentity_t *newTrackEnt = NULL;
qboolean reached = qfalse;
vec3_t vec;
float dist;
if ( client_camera.trackEntNum >= 0 && client_camera.trackEntNum < ENTITYNUM_WORLD )
{//We're already heading to a path_corner
trackEnt = &g_entities[client_camera.trackEntNum];
VectorSubtract( trackEnt->currentOrigin, client_camera.origin, vec );
dist = VectorLengthSquared( vec );
if ( dist < 256 )//16 squared
{//FIXME: who should be doing the using here?
G_UseTargets( trackEnt, trackEnt );
reached = qtrue;
}
}
if ( trackEnt && reached )
{
if ( trackEnt->target && trackEnt->target[0] )
{//Find our next path_corner
newTrackEnt = G_Find( NULL, FOFS(targetname), trackEnt->target );
if ( newTrackEnt )
{
if ( newTrackEnt->radius < 0 )
{//Don't bother trying to maintain a radius
client_camera.distance = 0;
client_camera.speed = client_camera.initSpeed;
}
else if ( newTrackEnt->radius > 0 )
{
client_camera.distance = newTrackEnt->radius;
}
if ( newTrackEnt->speed < 0 )
{//go back to our default speed
client_camera.speed = client_camera.initSpeed;
}
else if ( newTrackEnt->speed > 0 )
{
client_camera.speed = newTrackEnt->speed/10.0f;
}
}
}
else
{//stop thinking if this is the last one
CGCam_TrackDisable();
}
}
if ( newTrackEnt )
{//Update will lerp this
client_camera.info_state |= CAMERA_TRACKING;
client_camera.trackEntNum = newTrackEnt->s.number;
VectorCopy( newTrackEnt->currentOrigin, client_camera.trackToOrg );
}
client_camera.nextTrackEntUpdateTime = cg.time + 100;
}
void CGCam_TrackUpdate ( void )
{
vec3_t goalVec, curVec, trackPos, vec;
float goalDist, dist;
//qboolean slowDown = qfalse;
if ( client_camera.nextTrackEntUpdateTime <= cg.time )
{
CGCam_TrackEntUpdate();
}
VectorSubtract( client_camera.trackToOrg, client_camera.origin, goalVec );
goalDist = VectorNormalize( goalVec );
if ( goalDist > 100 )
{
goalDist = 100;
}
else if ( goalDist < 10 )
{
goalDist = 10;
}
if ( client_camera.distance && client_camera.info_state & CAMERA_FOLLOWING )
{
float adjust = 0.0f, desiredSpeed = 0.0f;
float dot;
if ( !client_camera.distanceInitLerp )
{
VectorSubtract( client_camera.origin, client_camera.subjectPos, vec );
VectorNormalize( vec );
//FIXME: use client_camera.moveDir here?
VectorMA( client_camera.subjectPos, client_camera.distance, vec, client_camera.origin );
//Snap to first time only
client_camera.distanceInitLerp = qtrue;
return;
}
else if ( client_camera.subjectSpeed > 0.05f )
{//Don't start moving until subject moves
VectorSubtract( client_camera.subjectPos, client_camera.origin, vec );
dist = VectorNormalize(vec);
dot = DotProduct(goalVec, vec);
if ( dist > client_camera.distance )
{//too far away
if ( dot > 0 )
{//Camera is moving toward the subject
adjust = (dist - client_camera.distance);//Speed up
}
else if ( dot < 0 )
{//Camera is moving away from the subject
adjust = (dist - client_camera.distance) * -1.0f;//Slow down
}
}
else if ( dist < client_camera.distance )
{//too close
if(dot > 0)
{//Camera is moving toward the subject
adjust = (client_camera.distance - dist) * -1.0f;//Slow down
}
else if(dot < 0)
{//Camera is moving away from the subject
adjust = (client_camera.distance - dist);//Speed up
}
}
//Speed of the focus + our error
//desiredSpeed = aimCent->gent->speed + (adjust * cg.frametime/100.0f);//cg.frameInterpolation);
desiredSpeed = (adjust);// * cg.frametime/100.0f);//cg.frameInterpolation);
//self->moveInfo.speed = desiredSpeed;
//Don't change speeds faster than 10 every 10th of a second
float max_allowed_accel = MAX_ACCEL_PER_FRAME * (cg.frametime/100.0f);
if ( !client_camera.subjectSpeed )
{//full stop
client_camera.speed = desiredSpeed;
}
else if ( client_camera.speed - desiredSpeed > max_allowed_accel )
{//new speed much slower, slow down at max accel
client_camera.speed -= max_allowed_accel;
}
else if ( desiredSpeed - client_camera.speed > max_allowed_accel )
{//new speed much faster, speed up at max accel
client_camera.speed += max_allowed_accel;
}
else
{//remember this speed
client_camera.speed = desiredSpeed;
}