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(ep): Global variable pointing to sector cache. Gross. Remove.

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(bp_neighbors, bp_lbcost, pathcost): Replace pointer arithmetic by
array subscript.
This commit is contained in:
Markus Armbruster 2005-10-30 16:22:29 +00:00
parent e694cc20f8
commit e59f9a43d1
1 changed files with 7 additions and 8 deletions
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15
src/lib/common/path.c
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@ -68,8 +68,6 @@ static double bp_seccost(struct as_coord from, struct as_coord to,
s_char *pp);
static int bp_coord_hash(struct as_coord c);
struct empfile *ep;
/* We use this for caching neighbors. It never changes except
* at reboot time (maybe) so we never need to free it */
struct sctstr **neighsects = (struct sctstr **)0;
@ -79,8 +77,6 @@ bp_init(void)
{
struct bestp *bp;
ep = &empfile[EF_SECTOR];
bp = malloc(sizeof(*bp));
memset(bp, 0, sizeof(*bp));
bp->adp = as_init(BP_NEIGHBORS, BP_ASHASHSIZE, bp_coord_hash,
@ -187,6 +183,7 @@ bp_path(struct as_path *pp, s_char *buf)
static int
bp_neighbors(struct as_coord c, struct as_coord *cp, s_char *pp)
{
struct sctstr *sectp = (void *)empfile[EF_SECTOR].cache;
coord x, y;
coord nx, ny;
int n = 0, q;
@ -200,7 +197,7 @@ bp_neighbors(struct as_coord c, struct as_coord *cp, s_char *pp)
sx = XNORM(x);
sy = YNORM(y);
offset = (sy * WORLD_X + sx) / 2;
from = (struct sctstr *)(ep->cache + ep->size * offset);
from = &sectp[offset];
if (neighsects == (struct sctstr **)0)
ssp = (struct sctstr **)&tsp[0];
@ -214,7 +211,7 @@ bp_neighbors(struct as_coord c, struct as_coord *cp, s_char *pp)
sx = XNORM(nx);
sy = YNORM(ny);
offset = (sy * WORLD_X + sx) / 2;
sp = (struct sctstr *)(ep->cache + ep->size * offset);
sp = &sectp[offset];
*ssp = sp;
} else {
sp = *ssp;
@ -241,6 +238,7 @@ bp_neighbors(struct as_coord c, struct as_coord *cp, s_char *pp)
static double
bp_lbcost(struct as_coord from, struct as_coord to, s_char *pp)
{
struct sctstr *sectp = (void *)empfile[EF_SECTOR].cache;
struct bestp *bp = (struct bestp *)pp;
struct sctstr *ts;
float cost;
@ -251,7 +249,7 @@ bp_lbcost(struct as_coord from, struct as_coord to, s_char *pp)
sx = XNORM(x);
sy = YNORM(y);
offset = (sy * WORLD_X + sx) / 2;
ts = (struct sctstr *)(ep->cache + ep->size * offset);
ts = &sectp[offset];
cost = sector_mcost(ts, bp->bp_mobtype);
return cost;
}
@ -307,6 +305,7 @@ bp_clear_cachepath(void)
double
pathcost(struct sctstr *start, s_char *path, int mob_type)
{
struct sctstr *sectp = (void *)empfile[EF_SECTOR].cache;
unsigned i;
int o;
int cx, cy;
@ -333,7 +332,7 @@ pathcost(struct sctstr *start, s_char *path, int mob_type)
sx = XNORM(cx);
sy = YNORM(cy);
offset = (sy * WORLD_X + sx) / 2;
sp = (struct sctstr *)(ep->cache + ep->size * offset);
sp = &sectp[offset];
cost += sector_mcost(sp, mob_type);
path++;
}