forked from KolibriOS/kolibrios
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/*
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
|
|
|
This program 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.
|
|
|
|
This program 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 this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
// chase.c -- chase camera code
|
|
|
|
#include "quakedef.h"
|
|
|
|
cvar_t chase_back = {"chase_back", "100"};
|
|
cvar_t chase_up = {"chase_up", "16"};
|
|
cvar_t chase_right = {"chase_right", "0"};
|
|
cvar_t chase_active = {"chase_active", "0"};
|
|
|
|
vec3_t chase_pos;
|
|
vec3_t chase_angles;
|
|
|
|
vec3_t chase_dest;
|
|
vec3_t chase_dest_angles;
|
|
|
|
|
|
void Chase_Init (void)
|
|
{
|
|
Cvar_RegisterVariable (&chase_back);
|
|
Cvar_RegisterVariable (&chase_up);
|
|
Cvar_RegisterVariable (&chase_right);
|
|
Cvar_RegisterVariable (&chase_active);
|
|
}
|
|
|
|
void Chase_Reset (void)
|
|
{
|
|
// for respawning and teleporting
|
|
// start position 12 units behind head
|
|
}
|
|
|
|
void TraceLine (vec3_t start, vec3_t end, vec3_t impact)
|
|
{
|
|
trace_t trace;
|
|
|
|
memset (&trace, 0, sizeof(trace));
|
|
SV_RecursiveHullCheck (cl.worldmodel->hulls, 0, 0, 1, start, end, &trace);
|
|
|
|
VectorCopy (trace.endpos, impact);
|
|
}
|
|
|
|
void Chase_Update (void)
|
|
{
|
|
int i;
|
|
float dist;
|
|
vec3_t forward, up, right;
|
|
vec3_t dest, stop;
|
|
|
|
|
|
// if can't see player, reset
|
|
AngleVectors (cl.viewangles, forward, right, up);
|
|
|
|
// calc exact destination
|
|
for (i=0 ; i<3 ; i++)
|
|
chase_dest[i] = r_refdef.vieworg[i]
|
|
- forward[i]*chase_back.value
|
|
- right[i]*chase_right.value;
|
|
chase_dest[2] = r_refdef.vieworg[2] + chase_up.value;
|
|
|
|
// find the spot the player is looking at
|
|
VectorMA (r_refdef.vieworg, 4096, forward, dest);
|
|
TraceLine (r_refdef.vieworg, dest, stop);
|
|
|
|
// calculate pitch to look at the same spot from camera
|
|
VectorSubtract (stop, r_refdef.vieworg, stop);
|
|
dist = DotProduct (stop, forward);
|
|
if (dist < 1)
|
|
dist = 1;
|
|
r_refdef.viewangles[PITCH] = -atan(stop[2] / dist) / M_PI * 180;
|
|
|
|
// move towards destination
|
|
VectorCopy (chase_dest, r_refdef.vieworg);
|
|
}
|
|
|