mirror of
https://github.com/nzp-team/quakespasm.git
synced 2024-11-28 14:42:26 +00:00
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/*
|
|
Copyright (C) 1996-2001 Id Software, Inc.
|
|
Copyright (C) 2002-2009 John Fitzgibbons and others
|
|
Copyright (C) 2010-2014 QuakeSpasm developers
|
|
|
|
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_NONE};
|
|
cvar_t chase_up = {"chase_up", "16", CVAR_NONE};
|
|
cvar_t chase_right = {"chase_right", "0", CVAR_NONE};
|
|
cvar_t chase_active = {"chase_active", "0", CVAR_NONE};
|
|
|
|
/*
|
|
==============
|
|
Chase_Init
|
|
==============
|
|
*/
|
|
void Chase_Init (void)
|
|
{
|
|
Cvar_RegisterVariable (&chase_back);
|
|
Cvar_RegisterVariable (&chase_up);
|
|
Cvar_RegisterVariable (&chase_right);
|
|
Cvar_RegisterVariable (&chase_active);
|
|
}
|
|
|
|
/*
|
|
==============
|
|
TraceLine
|
|
|
|
TODO: impact on bmodels, monsters
|
|
==============
|
|
*/
|
|
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);
|
|
}
|
|
|
|
/*
|
|
==============
|
|
Chase_UpdateForClient -- johnfitz -- orient client based on camera. called after input
|
|
==============
|
|
*/
|
|
void Chase_UpdateForClient (void)
|
|
{
|
|
//place camera
|
|
|
|
//assign client angles to camera
|
|
|
|
//see where camera points
|
|
|
|
//adjust client angles to point at the same place
|
|
}
|
|
|
|
/*
|
|
==============
|
|
Chase_UpdateForDrawing -- johnfitz -- orient camera based on client. called before drawing
|
|
|
|
TODO: stay at least 8 units away from all walls in this leaf
|
|
==============
|
|
*/
|
|
void Chase_UpdateForDrawing (void)
|
|
{
|
|
int i;
|
|
vec3_t forward, up, right;
|
|
vec3_t ideal, crosshair, temp;
|
|
|
|
AngleVectors (cl.viewangles, forward, right, up);
|
|
|
|
// calc ideal camera location before checking for walls
|
|
for (i=0 ; i<3 ; i++)
|
|
ideal[i] = cl.viewent.origin[i]
|
|
- forward[i]*chase_back.value
|
|
+ right[i]*chase_right.value;
|
|
//+ up[i]*chase_up.value;
|
|
ideal[2] = cl.viewent.origin[2] + chase_up.value;
|
|
|
|
// make sure camera is not in or behind a wall
|
|
TraceLine(r_refdef.vieworg, ideal, temp);
|
|
if (VectorLength(temp) != 0)
|
|
VectorCopy(temp, ideal);
|
|
|
|
// place camera
|
|
VectorCopy (ideal, r_refdef.vieworg);
|
|
|
|
// find the spot the player is looking at
|
|
VectorMA (cl.viewent.origin, 4096, forward, temp);
|
|
TraceLine (cl.viewent.origin, temp, crosshair);
|
|
|
|
// calculate camera angles to look at the same spot
|
|
VectorSubtract (crosshair, r_refdef.vieworg, temp);
|
|
VectorAngles (temp, r_refdef.viewangles);
|
|
if (r_refdef.viewangles[PITCH] == 90 || r_refdef.viewangles[PITCH] == -90)
|
|
r_refdef.viewangles[YAW] = cl.viewangles[YAW];
|
|
}
|
|
|