empserver/src/lib/update/bp.c
Markus Armbruster 5507e8a1dc Replace the revolting build pointer data structure by a proper data
type.  Make it abstract because that's possible.  Change data layout
so that the slots belonging to a sector are together in memory, it's
nicer to the cache.
(bp): The new type.  Users changed.
(get_wp): Update accordingly.
(alloc_bp): New.
(update_main, calc_all): Use it.  Before, calc_all() allocated 1/7
more than necessary.
2007-01-13 09:07:59 +00:00

99 lines
2.4 KiB
C

/*
* Empire - A multi-player, client/server Internet based war game.
* Copyright (C) 1986-2007, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure
*
* 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
*
* ---
*
* See files README, COPYING and CREDITS in the root of the source
* tree for related information and legal notices. It is expected
* that future projects/authors will amend these files as needed.
*
* ---
*
* bp.c: Functions for build pointer (bp) handling
*
* Known contributors to this file:
* Ville Virrankoski, 1996
* Markus Armbruster, 2007
*/
#include <config.h>
#include "budg.h"
#include "update.h"
struct bp {
int val[7];
};
static int bud_key[I_MAX + 2] =
{ 1, 2, 3, 4, 0, 0, 0, 0, 0, 0, 5, 6, 0, 0, 7 };
static int *
get_wp(struct bp *bp, struct sctstr *sp, int cm)
{
return &bp[sp->sct_x + sp->sct_y * WORLD_X].val[cm - 1];
}
int
gt_bg_nmbr(struct bp *bp, struct sctstr *sp, i_type comm)
{
int *wp;
int cm;
if ((cm = bud_key[comm]) == 0) {
return sp->sct_item[comm];
} else {
wp = get_wp(bp, sp, cm);
return *wp;
}
}
void
pt_bg_nmbr(struct bp *bp, struct sctstr *sp, i_type comm, int amount)
{
int *wp;
int cm;
if ((cm = bud_key[comm]) != 0) {
wp = get_wp(bp, sp, cm);
*wp = amount;
}
}
void
fill_update_array(struct bp *bp, struct sctstr *sp)
{
int k;
int *wp;
i_type i;
for (i = I_NONE + 1; i <= I_MAX; i++)
if ((k = bud_key[i]) != 0) {
wp = get_wp(bp, sp, k);
*wp = sp->sct_item[i];
}
wp = get_wp(bp, sp, bud_key[I_MAX + 1]);
*wp = sp->sct_avail;
}
struct bp *
alloc_bp(void)
{
return calloc(WORLD_X * WORLD_Y, sizeof(struct bp));
}