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halflife-thewastes-sdk/cl_dll/entity.cpp

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//========= Copyright © 1996-2001, Valve LLC, All rights reserved. ============
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================
// Client side entity management functions
#include <memory.h>
#include "hud.h"
#include "cl_util.h"
#include "const.h"
#include "entity_types.h"
#include "studio_event.h" // def. of mstudioevent_t
#include "r_efx.h"
#include "event_api.h"
#include "pm_defs.h"
#include "pmtrace.h"
#include "in_defs.h"
void Game_AddObjects( void );
void Game_UpdateObjects(double frametime);
extern vec3_t v_origin;
int g_iAlive = 1;
double g_iFrametime = 0;
extern "C"
{
int DLLEXPORT HUD_AddEntity( int type, struct cl_entity_s *ent, const char *modelname );
void DLLEXPORT HUD_CreateEntities( void );
void DLLEXPORT HUD_TxferLocalOverrides( struct entity_state_s *state, const struct clientdata_s *client );
void DLLEXPORT HUD_ProcessPlayerState( struct entity_state_s *dst, const struct entity_state_s *src );
void DLLEXPORT HUD_TxferPredictionData ( struct entity_state_s *ps, const struct entity_state_s *pps, struct clientdata_s *pcd, const struct clientdata_s *ppcd, struct weapon_data_s *wd, const struct weapon_data_s *pwd );
void DLLEXPORT HUD_TempEntUpdate( double frametime, double client_time, double cl_gravity, struct tempent_s **ppTempEntFree, struct tempent_s **ppTempEntActive, int ( *Callback_AddVisibleEntity )( struct cl_entity_s *pEntity ), void ( *Callback_TempEntPlaySound )( struct tempent_s *pTemp, float damp ) );
struct cl_entity_s DLLEXPORT *HUD_GetUserEntity( int index );
}
/*
========================
HUD_AddEntity
Return 0 to filter entity from visible list for rendering
========================
*/
int DLLEXPORT HUD_AddEntity( int type, struct cl_entity_s *ent, const char *modelname )
{
switch ( type )
{
case ET_NORMAL:
case ET_PLAYER:
case ET_BEAM:
case ET_TEMPENTITY:
case ET_FRAGMENTED:
default:
break;
}
// each frame every entity passes this function, so the overview hooks it to filter the overview entities
if (gEngfuncs.IsSpectateOnly())
{
gHUD.m_Spectator.AddOverviewEntity( type, ent, modelname );
if ( ( gHUD.m_Spectator.m_iMainMode == MAIN_IN_EYE ||
gHUD.m_Spectator.m_iInsetMode == INSET_IN_EYE ) &&
ent->index == gHUD.m_Spectator.m_iObserverTarget )
return 0; // don't draw the player we are following in eye
}
return 1;
}
/*
=========================
HUD_TxferLocalOverrides
The server sends us our origin with extra precision as part of the clientdata structure, not during the normal
playerstate update in entity_state_t. In order for these overrides to eventually get to the appropriate playerstate
structure, we need to copy them into the state structure at this point.
=========================
*/
void DLLEXPORT HUD_TxferLocalOverrides( struct entity_state_s *state, const struct clientdata_s *client )
{
VectorCopy( client->origin, state->origin );
// Spectator
state->iuser1 = client->iuser1;
state->iuser2 = client->iuser2;
// Duck prevention
state->iuser3 = client->iuser3;
// Fire prevention
state->iuser4 = client->iuser4;
}
/*
=========================
HUD_ProcessPlayerState
We have received entity_state_t for this player over the network. We need to copy appropriate fields to the
playerstate structure
=========================
*/
void DLLEXPORT HUD_ProcessPlayerState( struct entity_state_s *dst, const struct entity_state_s *src )
{
// Copy in network data
VectorCopy( src->origin, dst->origin );
VectorCopy( src->angles, dst->angles );
VectorCopy( src->velocity, dst->velocity );
dst->frame = src->frame;
dst->modelindex = src->modelindex;
dst->skin = src->skin;
dst->effects = src->effects;
dst->weaponmodel = src->weaponmodel;
dst->movetype = src->movetype;
dst->sequence = src->sequence;
dst->animtime = src->animtime;
dst->solid = src->solid;
dst->rendermode = src->rendermode;
dst->renderamt = src->renderamt;
dst->rendercolor.r = src->rendercolor.r;
dst->rendercolor.g = src->rendercolor.g;
dst->rendercolor.b = src->rendercolor.b;
dst->renderfx = src->renderfx;
dst->framerate = src->framerate;
dst->body = src->body;
memcpy( &dst->controller[0], &src->controller[0], 4 * sizeof( byte ) );
memcpy( &dst->blending[0], &src->blending[0], 2 * sizeof( byte ) );
VectorCopy( src->basevelocity, dst->basevelocity );
dst->friction = src->friction;
dst->gravity = src->gravity;
dst->gaitsequence = src->gaitsequence;
dst->spectator = src->spectator;
dst->usehull = src->usehull;
dst->playerclass = src->playerclass;
dst->team = src->team;
dst->colormap = src->colormap;
// Save off some data so other areas of the Client DLL can get to it
cl_entity_t *player = gEngfuncs.GetLocalPlayer(); // Get the local player's index
if ( dst->number == player->index )
{
g_iPlayerClass = dst->playerclass;
g_iTeamNumber = dst->team;
g_iUser1 = src->iuser1;
g_iUser2 = src->iuser2;
g_iUser3 = src->iuser3;
// if the movetype is NOCLIP, we are in observer mode.
if(src->movetype == MOVETYPE_NOCLIP)
{
}
}
}
/*
=========================
HUD_TxferPredictionData
Because we can predict an arbitrary number of frames before the server responds with an update, we need to be able to copy client side prediction data in
from the state that the server ack'd receiving, which can be anywhere along the predicted frame path ( i.e., we could predict 20 frames into the future and the server ack's
up through 10 of those frames, so we need to copy persistent client-side only state from the 10th predicted frame to the slot the server
update is occupying.
=========================
*/
void DLLEXPORT HUD_TxferPredictionData ( struct entity_state_s *ps, const struct entity_state_s *pps, struct clientdata_s *pcd, const struct clientdata_s *ppcd, struct weapon_data_s *wd, const struct weapon_data_s *pwd )
{
ps->oldbuttons = pps->oldbuttons;
ps->flFallVelocity = pps->flFallVelocity;
ps->iStepLeft = pps->iStepLeft;
ps->playerclass = pps->playerclass;
pcd->viewmodel = ppcd->viewmodel;
pcd->m_iId = ppcd->m_iId;
pcd->ammo_shells = ppcd->ammo_shells;
pcd->ammo_nails = ppcd->ammo_nails;
pcd->ammo_cells = ppcd->ammo_cells;
pcd->ammo_rockets = ppcd->ammo_rockets;
pcd->m_flNextAttack = ppcd->m_flNextAttack;
pcd->fov = ppcd->fov;
pcd->weaponanim = ppcd->weaponanim;
pcd->tfstate = ppcd->tfstate;
pcd->maxspeed = ppcd->maxspeed;
pcd->deadflag = ppcd->deadflag;
// Spectating or not dead == get control over view angles.
g_iAlive = ( ppcd->iuser1 || ( pcd->deadflag == DEAD_NO ) ) ? 1 : 0;
// Spectator
pcd->iuser1 = ppcd->iuser1;
pcd->iuser2 = ppcd->iuser2;
// Duck prevention
pcd->iuser3 = ppcd->iuser3;
if ( gEngfuncs.IsSpectateOnly() )
{
// in specator mode we tell the engine who we want to spectate and how
// iuser3 is not used for duck prevention (since the spectator can't duck at all)
pcd->iuser1 = g_iUser1; // observer mode
pcd->iuser2 = g_iUser2; // first target
pcd->iuser3 = g_iUser3; // second target
}
// Fire prevention
pcd->iuser4 = ppcd->iuser4;
VectorCopy( ppcd->vuser1, pcd->vuser1 );
VectorCopy( ppcd->vuser2, pcd->vuser2 );
VectorCopy( ppcd->vuser3, pcd->vuser3 );
VectorCopy( ppcd->vuser4, pcd->vuser4 );
memcpy( wd, pwd, 32 * sizeof( weapon_data_t ) );
}
/*
=========================
HUD_CreateEntities
Gives us a chance to add additional entities to the render this frame
=========================
*/
void DLLEXPORT HUD_CreateEntities( void )
{
// e.g., create a persistent cl_entity_t somewhere.
// Load an appropriate model into it ( gEngfuncs.CL_LoadModel )
// Call gEngfuncs.CL_CreateVisibleEntity to add it to the visedicts list
// Add in any game specific objects
Game_AddObjects();
// Update any game specific objects
Game_UpdateObjects(g_iFrametime);
GetClientVoiceMgr()->CreateEntities();
}
/*
void ParticleCallback( struct particle_s *particle, float frametime )
{
int i;
for ( i = 0; i < 3; i++ )
{
particle->org[ i ] += particle->vel[ i ] * frametime;
}
}
cvar_t *color = NULL;
void Particles( void )
{
static float lasttime;
float curtime;
curtime = gEngfuncs.GetClientTime();
if ( ( curtime - lasttime ) < 2.0 )
return;
if ( !color )
{
color = gEngfuncs.pfnRegisterVariable ( "color","255 0 0", 0 );
}
lasttime = curtime;
// Create a few particles
particle_t *p;
int i, j;
for ( i = 0; i < 1000; i++ )
{
int r, g, b;
p = gEngfuncs.pEfxAPI->R_AllocParticle( ParticleCallback );
if ( !p )
break;
for ( j = 0; j < 3; j++ )
{
p->org[ j ] = v_origin[ j ] + gEngfuncs.pfnRandomFloat( -32.0, 32.0 );;
p->vel[ j ] = gEngfuncs.pfnRandomFloat( -100.0, 100.0 );
}
if ( color )
{
sscanf( color->string, "%i %i %i", &r, &g, &b );
}
else
{
r = 192;
g = 0;
b = 0;
}
p->color = gEngfuncs.pEfxAPI->R_LookupColor( r, g, b );
gEngfuncs.pEfxAPI->R_GetPackedColor( &p->packedColor, p->color );
// p->die is set to current time so all you have to do is add an additional time to it
p->die += 3.0;
}
}
*/
/*
void TempEntCallback ( struct tempent_s *ent, float frametime, float currenttime )
{
int i;
for ( i = 0; i < 3; i++ )
{
ent->entity.curstate.origin[ i ] += ent->entity.baseline.origin[ i ] * frametime;
}
}
void TempEnts( void )
{
static float lasttime;
float curtime;
curtime = gEngfuncs.GetClientTime();
if ( ( curtime - lasttime ) < 10.0 )
return;
lasttime = curtime;
TEMPENTITY *p;
int i, j;
struct model_s *mod;
vec3_t origin;
int index;
mod = gEngfuncs.CL_LoadModel( "sprites/laserdot.spr", &index );
for ( i = 0; i < 100; i++ )
{
for ( j = 0; j < 3; j++ )
{
origin[ j ] = v_origin[ j ];
if ( j != 2 )
{
origin[ j ] += 75;
}
}
p = gEngfuncs.pEfxAPI->CL_TentEntAllocCustom( (float *)&origin, mod, 0, TempEntCallback );
if ( !p )
break;
for ( j = 0; j < 3; j++ )
{
p->entity.curstate.origin[ j ] = origin[ j ];
// Store velocity in baseline origin
p->entity.baseline.origin[ j ] = gEngfuncs.pfnRandomFloat( -100, 100 );
}
// p->die is set to current time so all you have to do is add an additional time to it
p->die += 10.0;
}
}
*/
/*
=================
CL_UpdateTEnts
Simulation and cleanup of temporary entities
=================
*/
void DLLEXPORT HUD_TempEntUpdate (
double frametime, // Simulation time
double client_time, // Absolute time on client
double cl_gravity, // True gravity on client
TEMPENTITY **ppTempEntFree, // List of freed temporary ents
TEMPENTITY **ppTempEntActive, // List
int ( *Callback_AddVisibleEntity )( cl_entity_t *pEntity ),
void ( *Callback_TempEntPlaySound )( TEMPENTITY *pTemp, float damp ) )
{
static int gTempEntFrame = 0;
int i;
TEMPENTITY *pTemp, *pnext, *pprev;
float freq, gravity, gravitySlow, life, fastFreq;
g_iFrametime = frametime;
// Nothing to simulate
if ( !*ppTempEntActive )
return;
// in order to have tents collide with players, we have to run the player prediction code so
// that the client has the player list. We run this code once when we detect any COLLIDEALL
// tent, then set this BOOL to true so the code doesn't get run again if there's more than
// one COLLIDEALL ent for this update. (often are).
gEngfuncs.pEventAPI->EV_SetUpPlayerPrediction( false, true );
// Store off the old count
gEngfuncs.pEventAPI->EV_PushPMStates();
// Now add in all of the players.
gEngfuncs.pEventAPI->EV_SetSolidPlayers ( -1 );
// !!!BUGBUG -- This needs to be time based
gTempEntFrame = (gTempEntFrame+1) & 31;
pTemp = *ppTempEntActive;
// !!! Don't simulate while paused.... This is sort of a hack, revisit.
if ( frametime <= 0 )
{
while ( pTemp )
{
if ( !(pTemp->flags & FTENT_NOMODEL ) )
{
Callback_AddVisibleEntity( &pTemp->entity );
}
pTemp = pTemp->next;
}
goto finish;
}
pprev = NULL;
freq = client_time * 0.01;
fastFreq = client_time * 5.5;
gravity = -frametime * cl_gravity;
gravitySlow = gravity * 0.5;
while ( pTemp )
{
int active;
active = 1;
life = pTemp->die - client_time;
pnext = pTemp->next;
if ( life < 0 )
{
if ( pTemp->flags & FTENT_FADEOUT )
{
if (pTemp->entity.curstate.rendermode == kRenderNormal)
pTemp->entity.curstate.rendermode = kRenderTransTexture;
pTemp->entity.curstate.renderamt = pTemp->entity.baseline.renderamt * ( 1 + life * pTemp->fadeSpeed );
if ( pTemp->entity.curstate.renderamt <= 0 )
active = 0;
}
else
active = 0;
}
if ( !active ) // Kill it
{
pTemp->next = *ppTempEntFree;
*ppTempEntFree = pTemp;
if ( !pprev ) // Deleting at head of list
*ppTempEntActive = pnext;
else
pprev->next = pnext;
}
else
{
pprev = pTemp;
VectorCopy( pTemp->entity.origin, pTemp->entity.prevstate.origin );
if ( pTemp->flags & FTENT_SPARKSHOWER )
{
// Adjust speed if it's time
// Scale is next think time
if ( client_time > pTemp->entity.baseline.scale )
{
// Show Sparks
gEngfuncs.pEfxAPI->R_SparkEffect( pTemp->entity.origin, 8, -200, 200 );
// Reduce life
pTemp->entity.baseline.framerate -= 0.1;
if ( pTemp->entity.baseline.framerate <= 0.0 )
{
pTemp->die = client_time;
}
else
{
// So it will die no matter what
pTemp->die = client_time + 0.5;
// Next think
pTemp->entity.baseline.scale = client_time + 0.1;
}
}
}
else if ( pTemp->flags & FTENT_PLYRATTACHMENT )
{
cl_entity_t *pClient;
pClient = gEngfuncs.GetEntityByIndex( pTemp->clientIndex );
VectorAdd( pClient->origin, pTemp->tentOffset, pTemp->entity.origin );
}
else if ( pTemp->flags & FTENT_SINEWAVE )
{
pTemp->x += pTemp->entity.baseline.origin[0] * frametime;
pTemp->y += pTemp->entity.baseline.origin[1] * frametime;
pTemp->entity.origin[0] = pTemp->x + sin( pTemp->entity.baseline.origin[2] + client_time * pTemp->entity.prevstate.frame ) * (10*pTemp->entity.curstate.framerate);
pTemp->entity.origin[1] = pTemp->y + sin( pTemp->entity.baseline.origin[2] + fastFreq + 0.7 ) * (8*pTemp->entity.curstate.framerate);
pTemp->entity.origin[2] += pTemp->entity.baseline.origin[2] * frametime;
}
else if ( pTemp->flags & FTENT_SPIRAL )
{
float s, c;
s = sin( pTemp->entity.baseline.origin[2] + fastFreq );
c = cos( pTemp->entity.baseline.origin[2] + fastFreq );
pTemp->entity.origin[0] += pTemp->entity.baseline.origin[0] * frametime + 8 * sin( client_time * 20 + (int)pTemp );
pTemp->entity.origin[1] += pTemp->entity.baseline.origin[1] * frametime + 4 * sin( client_time * 30 + (int)pTemp );
pTemp->entity.origin[2] += pTemp->entity.baseline.origin[2] * frametime;
}
else
{
for ( i = 0; i < 3; i++ )
pTemp->entity.origin[i] += pTemp->entity.baseline.origin[i] * frametime;
}
if ( pTemp->flags & FTENT_SPRANIMATE )
{
pTemp->entity.curstate.frame += frametime * pTemp->entity.curstate.framerate;
if ( pTemp->entity.curstate.frame >= pTemp->frameMax )
{
pTemp->entity.curstate.frame = pTemp->entity.curstate.frame - (int)(pTemp->entity.curstate.frame);
if ( !(pTemp->flags & FTENT_SPRANIMATELOOP) )
{
// this animating sprite isn't set to loop, so destroy it.
pTemp->die = client_time;
pTemp = pnext;
continue;
}
}
}
else if ( pTemp->flags & FTENT_SPRCYCLE )
{
pTemp->entity.curstate.frame += frametime * 10;
if ( pTemp->entity.curstate.frame >= pTemp->frameMax )
{
pTemp->entity.curstate.frame = pTemp->entity.curstate.frame - (int)(pTemp->entity.curstate.frame);
}
}
// Experiment
#if 0
if ( pTemp->flags & FTENT_SCALE )
pTemp->entity.curstate.framerate += 20.0 * (frametime / pTemp->entity.curstate.framerate);
#endif
if ( pTemp->flags & FTENT_ROTATE )
{
pTemp->entity.angles[0] += pTemp->entity.baseline.angles[0] * frametime;
pTemp->entity.angles[1] += pTemp->entity.baseline.angles[1] * frametime;
pTemp->entity.angles[2] += pTemp->entity.baseline.angles[2] * frametime;
VectorCopy( pTemp->entity.angles, pTemp->entity.latched.prevangles );
}
if ( pTemp->flags & (FTENT_COLLIDEALL | FTENT_COLLIDEWORLD) )
{
vec3_t traceNormal;
float traceFraction = 1;
if ( pTemp->flags & FTENT_COLLIDEALL )
{
pmtrace_t pmtrace;
physent_t *pe;
gEngfuncs.pEventAPI->EV_SetTraceHull( 2 );
gEngfuncs.pEventAPI->EV_PlayerTrace( pTemp->entity.prevstate.origin, pTemp->entity.origin, PM_STUDIO_BOX, -1, &pmtrace );
if ( pmtrace.fraction != 1 )
{
pe = gEngfuncs.pEventAPI->EV_GetPhysent( pmtrace.ent );
if ( !pmtrace.ent || ( pe->info != pTemp->clientIndex ) )
{
traceFraction = pmtrace.fraction;
VectorCopy( pmtrace.plane.normal, traceNormal );
if ( pTemp->hitcallback )
{
(*pTemp->hitcallback)( pTemp, &pmtrace );
}
}
}
}
else if ( pTemp->flags & FTENT_COLLIDEWORLD )
{
pmtrace_t pmtrace;
gEngfuncs.pEventAPI->EV_SetTraceHull( 2 );
gEngfuncs.pEventAPI->EV_PlayerTrace( pTemp->entity.prevstate.origin, pTemp->entity.origin, PM_STUDIO_BOX | PM_WORLD_ONLY, -1, &pmtrace );
if ( pmtrace.fraction != 1 )
{
traceFraction = pmtrace.fraction;
VectorCopy( pmtrace.plane.normal, traceNormal );
if ( pTemp->flags & FTENT_SPARKSHOWER )
{
// Chop spark speeds a bit more
//
VectorScale( pTemp->entity.baseline.origin, 0.6, pTemp->entity.baseline.origin );
if ( Length( pTemp->entity.baseline.origin ) < 10 )
{
pTemp->entity.baseline.framerate = 0.0;
}
}
if ( pTemp->hitcallback )
{
(*pTemp->hitcallback)( pTemp, &pmtrace );
}
}
}
if ( traceFraction != 1 ) // Decent collision now, and damping works
{
float proj, damp;
// Place at contact point
VectorMA( pTemp->entity.prevstate.origin, traceFraction*frametime, pTemp->entity.baseline.origin, pTemp->entity.origin );
// Damp velocity
damp = pTemp->bounceFactor;
if ( pTemp->flags & (FTENT_GRAVITY|FTENT_SLOWGRAVITY) )
{
damp *= 0.5;
if ( traceNormal[2] > 0.9 ) // Hit floor?
{
if ( pTemp->entity.baseline.origin[2] <= 0 && pTemp->entity.baseline.origin[2] >= gravity*3 )
{
damp = 0; // Stop
pTemp->flags &= ~(FTENT_ROTATE|FTENT_GRAVITY|FTENT_SLOWGRAVITY|FTENT_COLLIDEWORLD|FTENT_SMOKETRAIL);
pTemp->entity.angles[0] = 0;
pTemp->entity.angles[2] = 0;
}
}
}
if (pTemp->hitSound)
{
Callback_TempEntPlaySound(pTemp, damp);
}
if (pTemp->flags & FTENT_COLLIDEKILL)
{
// die on impact
pTemp->flags &= ~FTENT_FADEOUT;
pTemp->die = client_time;
}
else
{
// Reflect velocity
if ( damp != 0 )
{
proj = DotProduct( pTemp->entity.baseline.origin, traceNormal );
VectorMA( pTemp->entity.baseline.origin, -proj*2, traceNormal, pTemp->entity.baseline.origin );
// Reflect rotation (fake)
pTemp->entity.angles[1] = -pTemp->entity.angles[1];
}
if ( damp != 1 )
{
VectorScale( pTemp->entity.baseline.origin, damp, pTemp->entity.baseline.origin );
VectorScale( pTemp->entity.angles, 0.9, pTemp->entity.angles );
}
}
}
}
if ( (pTemp->flags & FTENT_FLICKER) && gTempEntFrame == pTemp->entity.curstate.effects )
{
dlight_t *dl = gEngfuncs.pEfxAPI->CL_AllocDlight (0);
VectorCopy (pTemp->entity.origin, dl->origin);
dl->radius = 60;
dl->color.r = 255;
dl->color.g = 120;
dl->color.b = 0;
dl->die = client_time + 0.01;
}
if ( pTemp->flags & FTENT_SMOKETRAIL )
{
gEngfuncs.pEfxAPI->R_RocketTrail (pTemp->entity.prevstate.origin, pTemp->entity.origin, 1);
}
if ( pTemp->flags & FTENT_GRAVITY )
{
pTemp->entity.baseline.origin[2] += gravity;
}
else if ( pTemp->flags & FTENT_SLOWGRAVITY )
{
pTemp->entity.baseline.origin[2] += gravitySlow;
}
if ( pTemp->flags & FTENT_CLIENTCUSTOM )
{
if ( pTemp->callback )
{
( *pTemp->callback )( pTemp, frametime, client_time );
}
}
// Cull to PVS (not frustum cull, just PVS)
if ( !(pTemp->flags & FTENT_NOMODEL ) )
{
if ( !Callback_AddVisibleEntity( &pTemp->entity ) )
{
if ( !(pTemp->flags & FTENT_PERSIST) )
{
pTemp->die = client_time; // If we can't draw it this frame, just dump it.
pTemp->flags &= ~FTENT_FADEOUT; // Don't fade out, just die
}
}
}
}
pTemp = pnext;
}
finish:
// Restore state info
gEngfuncs.pEventAPI->EV_PopPMStates();
}
/*
=================
HUD_GetUserEntity
If you specify negative numbers for beam start and end point entities, then
the engine will call back into this function requesting a pointer to a cl_entity_t
object that describes the entity to attach the beam onto.
Indices must start at 1, not zero.
=================
*/
cl_entity_t DLLEXPORT *HUD_GetUserEntity( int index )
{
// Do we need this? - Gage
#if 0
if(index > 0 && index <= 1)
return &laser_beams[index];
else
return NULL;
#else
return NULL;
#endif
}
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