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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5131 | clevermous | 1 | /* |
| 2 | Copyright (C) 1996-1997 Id Software, Inc. |
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| 3 | |||
| 4 | This program is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU General Public License |
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| 6 | as published by the Free Software Foundation; either version 2 |
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| 7 | of the License, or (at your option) any later version. |
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| 8 | |||
| 9 | This program is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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| 12 | |||
| 13 | See the GNU General Public License for more details. |
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| 14 | |||
| 15 | You should have received a copy of the GNU General Public License |
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| 16 | along with this program; if not, write to the Free Software |
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| 17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | |||
| 19 | */ |
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| 20 | // chase.c -- chase camera code |
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| 21 | |||
| 22 | #include "quakedef.h" |
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| 23 | |||
| 24 | cvar_t chase_back = {"chase_back", "100"}; |
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| 25 | cvar_t chase_up = {"chase_up", "16"}; |
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| 26 | cvar_t chase_right = {"chase_right", "0"}; |
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| 27 | cvar_t chase_active = {"chase_active", "0"}; |
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| 28 | |||
| 29 | vec3_t chase_pos; |
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| 30 | vec3_t chase_angles; |
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| 31 | |||
| 32 | vec3_t chase_dest; |
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| 33 | vec3_t chase_dest_angles; |
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| 34 | |||
| 35 | |||
| 36 | void Chase_Init (void) |
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| 37 | { |
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| 38 | Cvar_RegisterVariable (&chase_back); |
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| 39 | Cvar_RegisterVariable (&chase_up); |
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| 40 | Cvar_RegisterVariable (&chase_right); |
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| 41 | Cvar_RegisterVariable (&chase_active); |
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| 42 | } |
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| 43 | |||
| 44 | void Chase_Reset (void) |
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| 45 | { |
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| 46 | // for respawning and teleporting |
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| 47 | // start position 12 units behind head |
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| 48 | } |
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| 49 | |||
| 50 | void TraceLine (vec3_t start, vec3_t end, vec3_t impact) |
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| 51 | { |
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| 52 | trace_t trace; |
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| 53 | |||
| 54 | memset (&trace, 0, sizeof(trace)); |
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| 55 | SV_RecursiveHullCheck (cl.worldmodel->hulls, 0, 0, 1, start, end, &trace); |
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| 56 | |||
| 57 | VectorCopy (trace.endpos, impact); |
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| 58 | } |
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| 59 | |||
| 60 | void Chase_Update (void) |
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| 61 | { |
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| 62 | int i; |
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| 63 | float dist; |
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| 64 | vec3_t forward, up, right; |
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| 65 | vec3_t dest, stop; |
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| 66 | |||
| 67 | |||
| 68 | // if can't see player, reset |
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| 69 | AngleVectors (cl.viewangles, forward, right, up); |
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| 70 | |||
| 71 | // calc exact destination |
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| 72 | for (i=0 ; i<3 ; i++) |
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| 73 | chase_dest[i] = r_refdef.vieworg[i] |
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| 74 | - forward[i]*chase_back.value |
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| 75 | - right[i]*chase_right.value; |
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| 76 | chase_dest[2] = r_refdef.vieworg[2] + chase_up.value; |
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| 77 | |||
| 78 | // find the spot the player is looking at |
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| 79 | VectorMA (r_refdef.vieworg, 4096, forward, dest); |
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| 80 | TraceLine (r_refdef.vieworg, dest, stop); |
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| 81 | |||
| 82 | // calculate pitch to look at the same spot from camera |
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| 83 | VectorSubtract (stop, r_refdef.vieworg, stop); |
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| 84 | dist = DotProduct (stop, forward); |
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| 85 | if (dist < 1) |
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| 86 | dist = 1; |
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| 87 | r_refdef.viewangles[PITCH] = -atan(stop[2] / dist) / M_PI * 180; |
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| 88 | |||
| 89 | // move towards destination |
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| 90 | VectorCopy (chase_dest, r_refdef.vieworg); |
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| 91 | } |
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| 92 |