cl_tent.c

著名游戏quake2原代码最新版本(vc6.0可以编译的)

		break;

	case TE_TRACKER_EXPLOSION:
		MSG_ReadPos (&net_message, pos);
		CL_ColorFlash (pos, 0, 150, -1, -1, -1);
		CL_ColorExplosionParticles (pos, 0, 1);
//		CL_Tracker_Explode (pos);
		S_StartSound (pos, 0, 0, cl_sfx_disrexp, 1, ATTN_NORM, 0);
		break;

	case TE_TELEPORT_EFFECT:
	case TE_DBALL_GOAL:
		MSG_ReadPos (&net_message, pos);
		CL_TeleportParticles (pos);
		break;

	case TE_WIDOWBEAMOUT:
		CL_ParseWidow ();
		break;

	case TE_NUKEBLAST:
		CL_ParseNuke ();
		break;

	case TE_WIDOWSPLASH:
		MSG_ReadPos (&net_message, pos);
		CL_WidowSplash (pos);
		break;
//PGM
//==============

	default:
		Com_Error (ERR_DROP, "CL_ParseTEnt: bad type");
	}
}

/*
=================
CL_AddBeams
=================
*/
void CL_AddBeams (void)
{
	int			i,j;
	beam_t		*b;
	vec3_t		dist, org;
	float		d;
	entity_t	ent;
	float		yaw, pitch;
	float		forward;
	float		len, steps;
	float		model_length;
	
// update beams
	for (i=0, b=cl_beams ; i< MAX_BEAMS ; i++, b++)
	{
		if (!b->model || b->endtime < cl.time)
			continue;

		// if coming from the player, update the start position
		if (b->entity == cl.playernum+1)	// entity 0 is the world
		{
			VectorCopy (cl.refdef.vieworg, b->start);
			b->start[2] -= 22;	// adjust for view height
		}
		VectorAdd (b->start, b->offset, org);

	// calculate pitch and yaw
		VectorSubtract (b->end, org, dist);

		if (dist[1] == 0 && dist[0] == 0)
		{
			yaw = 0;
			if (dist[2] > 0)
				pitch = 90;
			else
				pitch = 270;
		}
		else
		{
	// PMM - fixed to correct for pitch of 0
			if (dist[0])
				yaw = (atan2(dist[1], dist[0]) * 180 / M_PI);
			else if (dist[1] > 0)
				yaw = 90;
			else
				yaw = 270;
			if (yaw < 0)
				yaw += 360;
	
			forward = sqrt (dist[0]*dist[0] + dist[1]*dist[1]);
			pitch = (atan2(dist[2], forward) * -180.0 / M_PI);
			if (pitch < 0)
				pitch += 360.0;
		}

	// add new entities for the beams
		d = VectorNormalize(dist);

		memset (&ent, 0, sizeof(ent));
		if (b->model == cl_mod_lightning)
		{
			model_length = 35.0;
			d-= 20.0;  // correction so it doesn't end in middle of tesla
		}
		else
		{
			model_length = 30.0;
		}
		steps = ceil(d/model_length);
		len = (d-model_length)/(steps-1);

		// PMM - special case for lightning model .. if the real length is shorter than the model,
		// flip it around & draw it from the end to the start.  This prevents the model from going
		// through the tesla mine (instead it goes through the target)
		if ((b->model == cl_mod_lightning) && (d <= model_length))
		{
//			Com_Printf ("special case\n");
			VectorCopy (b->end, ent.origin);
			// offset to push beam outside of tesla model (negative because dist is from end to start
			// for this beam)
//			for (j=0 ; j<3 ; j++)
//				ent.origin[j] -= dist[j]*10.0;
			ent.model = b->model;
			ent.flags = RF_FULLBRIGHT;
			ent.angles[0] = pitch;
			ent.angles[1] = yaw;
			ent.angles[2] = rand()%360;
			V_AddEntity (&ent);			
			return;
		}
		while (d > 0)
		{
			VectorCopy (org, ent.origin);
			ent.model = b->model;
			if (b->model == cl_mod_lightning)
			{
				ent.flags = RF_FULLBRIGHT;
				ent.angles[0] = -pitch;
				ent.angles[1] = yaw + 180.0;
				ent.angles[2] = rand()%360;
			}
			else
			{
				ent.angles[0] = pitch;
				ent.angles[1] = yaw;
				ent.angles[2] = rand()%360;
			}
			
//			Com_Printf("B: %d -> %d\n", b->entity, b->dest_entity);
			V_AddEntity (&ent);

			for (j=0 ; j<3 ; j++)
				org[j] += dist[j]*len;
			d -= model_length;
		}
	}
}


/*
//				Com_Printf ("Endpoint:  %f %f %f\n", b->end[0], b->end[1], b->end[2]);
//				Com_Printf ("Pred View Angles:  %f %f %f\n", cl.predicted_angles[0], cl.predicted_angles[1], cl.predicted_angles[2]);
//				Com_Printf ("Act View Angles: %f %f %f\n", cl.refdef.viewangles[0], cl.refdef.viewangles[1], cl.refdef.viewangles[2]);
//				VectorCopy (cl.predicted_origin, b->start);
//				b->start[2] += 22;	// adjust for view height
//				if (fabs(cl.refdef.vieworg[2] - b->start[2]) >= 10) {
//					b->start[2] = cl.refdef.vieworg[2];
//				}

//				Com_Printf ("Time:  %d %d %f\n", cl.time, cls.realtime, cls.frametime);
*/

extern cvar_t *hand;

/*
=================
ROGUE - draw player locked beams
CL_AddPlayerBeams
=================
*/
void CL_AddPlayerBeams (void)
{
	int			i,j;
	beam_t		*b;
	vec3_t		dist, org;
	float		d;
	entity_t	ent;
	float		yaw, pitch;
	float		forward;
	float		len, steps;
	int			framenum;
	float		model_length;
	
	float		hand_multiplier;
	frame_t		*oldframe;
	player_state_t	*ps, *ops;

//PMM
	if (hand)
	{
		if (hand->value == 2)
			hand_multiplier = 0;
		else if (hand->value == 1)
			hand_multiplier = -1;
		else
			hand_multiplier = 1;
	}
	else 
	{
		hand_multiplier = 1;
	}
//PMM

// update beams
	for (i=0, b=cl_playerbeams ; i< MAX_BEAMS ; i++, b++)
	{
		vec3_t		f,r,u;
		if (!b->model || b->endtime < cl.time)
			continue;

		if(cl_mod_heatbeam && (b->model == cl_mod_heatbeam))
		{

			// if coming from the player, update the start position
			if (b->entity == cl.playernum+1)	// entity 0 is the world
			{	
				// set up gun position
				// code straight out of CL_AddViewWeapon
				ps = &cl.frame.playerstate;
				j = (cl.frame.serverframe - 1) & UPDATE_MASK;
				oldframe = &cl.frames[j];
				if (oldframe->serverframe != cl.frame.serverframe-1 || !oldframe->valid)
					oldframe = &cl.frame;		// previous frame was dropped or involid
				ops = &oldframe->playerstate;
				for (j=0 ; j<3 ; j++)
				{
					b->start[j] = cl.refdef.vieworg[j] + ops->gunoffset[j]
						+ cl.lerpfrac * (ps->gunoffset[j] - ops->gunoffset[j]);
				}
				VectorMA (b->start, (hand_multiplier * b->offset[0]), cl.v_right, org);
				VectorMA (     org, b->offset[1], cl.v_forward, org);
				VectorMA (     org, b->offset[2], cl.v_up, org);
				if ((hand) && (hand->value == 2)) {
					VectorMA (org, -1, cl.v_up, org);
				}
				// FIXME - take these out when final
				VectorCopy (cl.v_right, r);
				VectorCopy (cl.v_forward, f);
				VectorCopy (cl.v_up, u);

			}
			else
				VectorCopy (b->start, org);
		}
		else
		{
			// if coming from the player, update the start position
			if (b->entity == cl.playernum+1)	// entity 0 is the world
			{
				VectorCopy (cl.refdef.vieworg, b->start);
				b->start[2] -= 22;	// adjust for view height
			}
			VectorAdd (b->start, b->offset, org);
		}

	// calculate pitch and yaw
		VectorSubtract (b->end, org, dist);

//PMM
		if(cl_mod_heatbeam && (b->model == cl_mod_heatbeam) && (b->entity == cl.playernum+1))
		{
			vec_t len;

			len = VectorLength (dist);
			VectorScale (f, len, dist);
			VectorMA (dist, (hand_multiplier * b->offset[0]), r, dist);
			VectorMA (dist, b->offset[1], f, dist);
			VectorMA (dist, b->offset[2], u, dist);
			if ((hand) && (hand->value == 2)) {
				VectorMA (org, -1, cl.v_up, org);
			}
		}
//PMM

		if (dist[1] == 0 && dist[0] == 0)
		{
			yaw = 0;
			if (dist[2] > 0)
				pitch = 90;
			else
				pitch = 270;
		}
		else
		{
	// PMM - fixed to correct for pitch of 0
			if (dist[0])
				yaw = (atan2(dist[1], dist[0]) * 180 / M_PI);
			else if (dist[1] > 0)
				yaw = 90;
			else
				yaw = 270;
			if (yaw < 0)
				yaw += 360;
	
			forward = sqrt (dist[0]*dist[0] + dist[1]*dist[1]);
			pitch = (atan2(dist[2], forward) * -180.0 / M_PI);
			if (pitch < 0)
				pitch += 360.0;
		}
		
		if (cl_mod_heatbeam && (b->model == cl_mod_heatbeam))
		{
			if (b->entity != cl.playernum+1)
			{
				framenum = 2;
//				Com_Printf ("Third person\n");
				ent.angles[0] = -pitch;
				ent.angles[1] = yaw + 180.0;
				ent.angles[2] = 0;
//				Com_Printf ("%f %f - %f %f %f\n", -pitch, yaw+180.0, b->offset[0], b->offset[1], b->offset[2]);
				AngleVectors(ent.angles, f, r, u);
					
				// if it's a non-origin offset, it's a player, so use the hardcoded player offset
				if (!VectorCompare (b->offset, vec3_origin))
				{
					VectorMA (org, -(b->offset[0])+1, r, org);
					VectorMA (org, -(b->offset[1]), f, org);
					VectorMA (org, -(b->offset[2])-10, u, org);
				}
				else
				{
					// if it's a monster, do the particle effect
					CL_MonsterPlasma_Shell(b->start);
				}
			}
			else
			{
				framenum = 1;
			}
		}

		// if it's the heatbeam, draw the particle effect
		if ((cl_mod_heatbeam && (b->model == cl_mod_heatbeam) && (b->entity == cl.playernum+1)))
		{
			CL_Heatbeam (org, dist);
		}

	// add new entities for the beams
		d = VectorNormalize(dist);

		memset (&ent, 0, sizeof(ent));
		if (b->model == cl_mod_heatbeam)
		{
			model_length = 32.0;
		}
		else if (b->model == cl_mod_lightning)
		{
			model_length = 35.0;
			d-= 20.0;  // correction so it doesn't end in middle of tesla
		}
		else
		{
			model_length = 30.0;
		}
		steps = ceil(d/model_length);
		len = (d-model_length)/(steps-1);

		// PMM - special case for lightning model .. if the real length is shorter than the model,
		// flip it around & draw it from the end to the start.  This prevents the model from going
		// through the tesla mine (instead it goes through the target)
		if ((b->model == cl_mod_lightning) && (d <= model_length))
		{
//			Com_Printf ("special case\n");
			VectorCopy (b->end, ent.origin);
			// offset to push beam outside of tesla model (negative because dist is from end to start
			// for this beam)
//			for (j=0 ; j<3 ; j++)
//				ent.origin[j] -= dist[j]*10.0;
			ent.model = b->model;
			ent.flags = RF_FULLBRIGHT;
			ent.angles[0] = pitch;
			ent.angles[1] = yaw;
			ent.angles[2] = rand()%360;
			V_AddEntity (&ent);			
			return;
		}
		while (d > 0)
		{
			VectorCopy (org, ent.origin);
			ent.model = b->model;
			if(cl_mod_heatbeam && (b->model == cl_mod_heatbeam))
			{
//				ent.flags = RF_FULLBRIGHT|RF_TRANSLUCENT;
//				ent.alpha = 0.3;
				ent.flags = RF_FULLBRIGHT;
				ent.angles[0] = -pitch;
				ent.angles[1] = yaw + 180.0;
				ent.angles[2] = (cl.time) % 360;
//				ent.angles[2] = rand()%360;
				ent.frame = framenum;
			}
			else if (b->model == cl_mod_lightning)
			{
				ent.flags = RF_FULLBRIGHT;
				ent.angles[0] = -pitch;
				ent.angles[1] = yaw + 180.0;
				ent.angles[2] = rand()%360;
			}
			else
			{
				ent.angles[0] = pitch;
				ent.angles[1] = yaw;
				ent.angles[2] = rand()%360;
			}
			
//			Com_Printf("B: %d -> %d\n", b->entity, b->dest_entity);
			V_AddEntity (&ent);

			for (j=0 ; j<3 ; j++)
				org[j] += dist[j]*len;
			d -= model_length;
		}
	}
}

/*
=================
CL_AddExplosions
=================
*/
void CL_AddExplosions (void)
{
	entity_t	*ent;
	int			i;
	explosion_t	*ex;
	float		frac;
	int			f;

	memset (&ent, 0, sizeof(ent));

	for (i=0, ex=cl_explosions ; i< MAX_EXPLOSIONS ; i++, ex++)
	{
		if (ex->type == ex_free)
			continue;
		frac = (cl.time - ex->start)/100.0;
		f = floor(frac);

		ent = &ex->ent;

		switch (ex->type)
		{
		case ex_mflash:
			if (f >= ex->frames-1)
				ex->type = ex_free;
			break;
		case ex_misc:
			if (f >= ex->frames-1)
			{
				ex->type = ex_free;
				break;
			}
			ent->alpha = 1.0 - frac/(ex->frames-1);
			break;
		case ex_flash:
			if (f >= 1)
			{
				ex->type = ex_free;
				break;
			}
			ent->alpha = 1.0;
			break;
		case ex_poly:
			if (f >= ex->frames-1)
			{
				ex->type = ex_free;
				break;
			}

			ent->alpha = (16.0 - (float)f)/16.0;

			if (f < 10)
			{
				ent->skinnum = (f>>1);
				if (ent->skinnum < 0)
					ent->skinnum = 0;
			}
			else
			{
				ent->flags |= RF_TRANSLUCENT;
				if (f < 13)
					ent->skinnum = 5;
				else
					ent->skinnum = 6;
			}
			break;
		case ex_poly2:
			if (f >= ex->frames-1)
			{
				ex->type = ex_free;
				break;
			}

			ent->alpha = (5.0 - (float)f)/5.0;
			ent->skinnum = 0;
			ent->flags |= RF_TRANSLUCENT;
			break;
		}

		if (ex->type == ex_free)
			continue;
		if (ex->light)
		{
			V_AddLight (ent->origin, ex->light*ent->alpha,
				ex->lightcolor[0], ex->lightcolor[1], ex->lightcolor[2]);
		}

		VectorCopy (ent->origin, ent->oldorigin);

		if (f < 0)
			f = 0;
		ent->frame = ex->baseframe + f + 1;
		ent->oldframe = ex->baseframe + f;
		ent->backlerp = 1.0 - cl.lerpfrac;

		V_AddEntity (ent);
	}
}


/*
=================
CL_AddLasers
=================
*/
void CL_AddLasers (void)
{
	laser_t		*l;
	int			i;

	for (i=0, l=cl_lasers ; i< MAX_LASERS ; i++, l++)
	{
		if (l->endtime >= cl.time)
			V_AddEntity (&l->ent);
	}
}

/* PMM - CL_Sustains */
void CL_ProcessSustain ()
{
	cl_sustain_t	*s;
	int				i;

	for (i=0, s=cl_sustains; i< MAX_SUSTAINS; i++, s++)
	{
		if (s->id)
			if ((s->endtime >= cl.time) && (cl.time >= s->nextthink))
			{
//				Com_Printf ("think %d %d %d\n", cl.time, s->nextthink, s->thinkinterval);
				s->think (s);
			}
			else if (s->endtime < cl.time)
				s->id = 0;
	}
}

/*
=================
CL_AddTEnts
=================
*/
void CL_AddTEnts (void)
{
	CL_AddBeams ();
	// PMM - draw plasma beams
	CL_AddPlayerBeams ();
	CL_AddExplosions ();
	CL_AddLasers ();
	// PMM - set up sustain
	CL_ProcessSustain();
}