109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
/*-
|
|
* Copyright (c) 1995-1998 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,
|
|
* without modification, immediately at the beginning of the file.
|
|
* 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 without 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 1.18 1999/01/11 03:18:53 yokota Exp $
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
|
|
#include <machine/md_var.h>
|
|
#include <machine/pc/display.h>
|
|
|
|
#include <saver.h>
|
|
|
|
#define NUM_STARS 50
|
|
|
|
static u_short *window;
|
|
static int blanked;
|
|
|
|
/*
|
|
* Alternate saver that got its inspiration from a well known utility
|
|
* package for an inferior^H^H^H^H^H^Hfamous OS.
|
|
*/
|
|
static int
|
|
star_saver(video_adapter_t *adp, 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 (adp->va_mode_flags & V_INFO_GRAPHICS)
|
|
return EAGAIN;
|
|
if (!blanked) {
|
|
window = (u_short *)adp->va_window;
|
|
/* clear the screen and set the border color */
|
|
fillw(((FG_LIGHTGREY|BG_BLACK) << 8) | scr_map[0x20],
|
|
window, scp->xsize * scp->ysize);
|
|
set_border(scp, 0);
|
|
blanked = TRUE;
|
|
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*)(window + 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 {
|
|
blanked = FALSE;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
star_init(video_adapter_t *adp)
|
|
{
|
|
blanked = FALSE;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
star_term(video_adapter_t *adp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static scrn_saver_t star_module = {
|
|
"star_saver", star_init, star_term, star_saver, NULL,
|
|
};
|
|
|
|
SAVER_MODULE(star_saver, star_module);
|