1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*
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 = CVAR2("chase_back", "100");
cvar_t chase_up = CVAR2("chase_up", "16");
cvar_t chase_right = CVAR2("chase_right", "0");
cvar_t chase_active = CVAR2("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);
}
|
