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/*
* sactamask.c: SACTEFAM.KLD Ÿ
*
* Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
* 1998- <masaki-c@is.aist-nara.ac.jp>
*
* 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
*
*/
/* $Id: sactamask.c,v 1.1 2003/04/22 16:29:52 chikama Exp $ */
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <glib.h>
#include "portab.h"
#include "system.h"
#include "LittleEndian.h"
#include "imput.h"
#include "sact.h"
#include "surface.h"
#include "ngraph.h"
#include "sprite.h"
#include "counter.h"
static surface_t *smask_get(int no);
static surface_t *smask_mul(surface_t *sf, int val);
struct ecopyparam {
int sttime;
int curtime;
int edtime;
int curstep;
int oldstep;
};
typedef struct ecopyparam ecopyparam_t;
static ecopyparam_t ecp;
// SACTEFAM.KLD ɤ߹
int smask_init(char *path) {
struct stat sbuf;
int i, fd;
char *adr;
SACTEFAM_t *am;
if (0 > (fd = open(path, O_RDONLY))) {
WARNING("open: %s\n", strerror(errno));
return NG;
}
if (0 > fstat(fd, &sbuf)) {
WARNING("fstat: %s\n", strerror(errno));
close(fd);
return NG;
}
if (MAP_FAILED == (adr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, fd, 0))) {
WARNING("mmap: %s\n", strerror(errno));
close(fd);
return NG;
}
am = &sact.am;
am->mapadr = adr;
am->size = sbuf.st_size;
am->fd = fd;
am->datanum = LittleEndian_getDW(adr, 0);
am->no = g_new(int, am->datanum);
am->offset = g_new(int, am->datanum);
for (i = 0; i < am->datanum; i++) {
am->no[i] = LittleEndian_getDW(adr, 16 + i * 16);
am->offset[i] = LittleEndian_getDW(adr, 16 + i * 16 + 8);
}
return OK;
}
// ֹ alphamask եߤ
static surface_t *smask_get(int no) {
int i;
SACTEFAM_t *am = &sact.am;
for (i = 0; i < am->datanum; i++) {
if (am->no[i] == no) break;
}
if (i == am->datanum) return NULL;
return sf_getcg(am->mapadr + am->offset[i]);
}
// ١ˤʤޥ alpha ͤ礷ƼФ
static surface_t *smask_mul(surface_t *sf, int val) {
surface_t *out = sf_create_alpha(sf->width, sf->height);
BYTE *src = sf->alpha;
BYTE *dst = out->alpha;
int pix = sf->width * sf->height;
while(pix--) {
int i = (*src - val) * 16;
if (i < 0) *dst = 255; // ͤ礭Τϥԡ
else if (i > 255) *dst = 0; // ͤ⾮Τ̵
else *dst = 255-i; // ʳͤ16
src++; dst++;
}
return out;
}
/**
* ޥĤ̹
*/
int sp_eupdate_amap(int index, int time, int cancel) {
surface_t *mask, *mask2;
surface_t *sfsrc, *sfdst;
int key;
mask = smask_get(index);
if (mask == NULL) {
sp_update_all(TRUE);
return OK;
}
// ߤ sf0
sfsrc = sf_dup(sf0);
sp_update_all(FALSE);
sfdst = sf_dup(sf0);
sf_copyall(sf0, sfsrc);
ecp.sttime = ecp.curtime = get_high_counter(SYSTEMCOUNTER_MSEC);
ecp.edtime = ecp.curtime + time*10;
ecp.oldstep = 0;
while ((ecp.curtime = get_high_counter(SYSTEMCOUNTER_MSEC)) < ecp.edtime) {
int curstep = 255 * (ecp.curtime - ecp.sttime)/ (ecp.edtime - ecp.sttime);
// ˤʤޥalphaͤ16ܤߤȤФ
mask2 = smask_mul(mask, curstep);
gre_BlendUseAMap(sf0, 0, 0, sfsrc, 0, 0, sfdst, 0, 0, sfsrc->width, sfsrc->height, mask2, 0, 0, 255);
ags_updateFull();
key = sys_keywait(10, cancel);
if (cancel && key) break;
// ޥ
sf_free(mask2);
}
sf_copyall(sf0, sfdst);
ags_updateFull();
sf_free(sfsrc);
sf_free(sfdst);
sf_free(mask);
return OK;
}
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