5d05b9d3e9
This ports id Software's Quake to run on the SDL plugin runtime. The source code originated from id under the GPLv2 license. I used https://github.com/ahefner/sdlquake as the base of my port. Performance is, unsurprisingly, not on par with what you're probably used to on PC. I average about 10FPS on ipod6g, but it's still playable. Sound works well enough, but in-game music is not supported. I've written ARM assembly routines for the inner sound loop. Make sure you turn the "brightness" all the way down, or colors will look funky. To run, extract Quake's data files to /.rockbox/quake. Have fun! Change-Id: I4285036e967d7f0722802d43cf2096c808ca5799
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// chase.c -- chase camera code
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#include "quakedef.h"
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cvar_t chase_back = {"chase_back", "100"};
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cvar_t chase_up = {"chase_up", "16"};
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cvar_t chase_right = {"chase_right", "0"};
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cvar_t chase_active = {"chase_active", "0"};
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vec3_t chase_pos;
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vec3_t chase_angles;
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vec3_t chase_dest;
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vec3_t chase_dest_angles;
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void Chase_Init (void)
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{
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Cvar_RegisterVariable (&chase_back);
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Cvar_RegisterVariable (&chase_up);
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Cvar_RegisterVariable (&chase_right);
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Cvar_RegisterVariable (&chase_active);
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}
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void Chase_Reset (void)
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{
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// for respawning and teleporting
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// start position 12 units behind head
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}
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void TraceLine (vec3_t start, vec3_t end, vec3_t impact)
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{
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trace_t trace;
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memset (&trace, 0, sizeof(trace));
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SV_RecursiveHullCheck (cl.worldmodel->hulls, 0, 0, 1, start, end, &trace);
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VectorCopy (trace.endpos, impact);
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}
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void Chase_Update (void)
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{
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int i;
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float dist;
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vec3_t forward, up, right;
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vec3_t dest, stop;
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// if can't see player, reset
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AngleVectors (cl.viewangles, forward, right, up);
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// calc exact destination
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for (i=0 ; i<3 ; i++)
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chase_dest[i] = r_refdef.vieworg[i]
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- forward[i]*chase_back.value
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- right[i]*chase_right.value;
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chase_dest[2] = r_refdef.vieworg[2] + chase_up.value;
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// find the spot the player is looking at
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VectorMA (r_refdef.vieworg, 4096, forward, dest);
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TraceLine (r_refdef.vieworg, dest, stop);
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// calculate pitch to look at the same spot from camera
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VectorSubtract (stop, r_refdef.vieworg, stop);
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dist = DotProduct (stop, forward);
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if (dist < 1)
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dist = 1;
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r_refdef.viewangles[PITCH] = -atan(stop[2] / dist) / M_PI * 180;
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// move towards destination
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VectorCopy (chase_dest, r_refdef.vieworg);
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}
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