118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/*-
|
|
* Copyright (c) 1995 Søren Schmidt
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer
|
|
* in this position and unchanged.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software withough specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $Id: star_saver.c,v 1.7 1995/11/29 20:10:33 wollman Exp $
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/lkm.h>
|
|
#include <sys/errno.h>
|
|
|
|
#include <machine/md_var.h>
|
|
|
|
#include "saver.h"
|
|
|
|
MOD_MISC(star_saver);
|
|
|
|
void (*current_saver)(int blank);
|
|
void (*old_saver)(int blank);
|
|
|
|
#define NUM_STARS 50
|
|
|
|
/*
|
|
* Alternate saver that got its inspiration from a well known utility
|
|
* package for an inferior^H^H^H^H^H^Hfamous OS.
|
|
*/
|
|
static void
|
|
star_saver(int blank)
|
|
{
|
|
scr_stat *scp = cur_console;
|
|
int cell, i;
|
|
char pattern[] = {"...........++++*** "};
|
|
char colors[] = {FG_DARKGREY, FG_LIGHTGREY,
|
|
FG_WHITE, FG_LIGHTCYAN};
|
|
static u_short stars[NUM_STARS][2];
|
|
|
|
if (blank) {
|
|
if (!scrn_blanked) {
|
|
scrn_blanked = 1;
|
|
fillw((FG_LIGHTGREY|BG_BLACK)<<8|scr_map[0x20], Crtat,
|
|
scp->xsize * scp->ysize);
|
|
set_border(0);
|
|
for(i=0; i<NUM_STARS; i++) {
|
|
stars[i][0] =
|
|
random() % (scp->xsize*scp->ysize);
|
|
stars[i][1] = 0;
|
|
}
|
|
}
|
|
cell = random() % NUM_STARS;
|
|
*((u_short*)(Crtat + stars[cell][0])) =
|
|
scr_map[pattern[stars[cell][1]]] |
|
|
colors[random()%sizeof(colors)] << 8;
|
|
if ((stars[cell][1]+=(random()%4)) >= sizeof(pattern)-1) {
|
|
stars[cell][0] = random() % (scp->xsize*scp->ysize);
|
|
stars[cell][1] = 0;
|
|
}
|
|
}
|
|
else {
|
|
if (scrn_blanked) {
|
|
set_border(scp->border);
|
|
scrn_blanked = 0;
|
|
scp->start = 0;
|
|
scp->end = scp->xsize * scp->ysize;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
star_saver_load(struct lkm_table *lkmtp, int cmd)
|
|
{
|
|
(*current_saver)(0);
|
|
old_saver = current_saver;
|
|
current_saver = star_saver;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
star_saver_unload(struct lkm_table *lkmtp, int cmd)
|
|
{
|
|
(*current_saver)(0);
|
|
current_saver = old_saver;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
star_saver_mod(struct lkm_table *lkmtp, int cmd, int ver)
|
|
{
|
|
DISPATCH(lkmtp, cmd, ver, star_saver_load, star_saver_unload,
|
|
lkm_nullcmd);
|
|
}
|