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#include <u.h>
#include <libc.h>
#include <mp.h>
#include <libsec.h>
#include <thread.h>
#include <draw.h>
#include <mouse.h>
#include <keyboard.h>
#include <geometry.h>
#include "dat.h"
#include "fns.h"
static char rowtab[] = "abcdefghijklmnopq"; /* |rowtab| = MAPH */
static int shiplentab[] = {
[Scarrier] 5,
[Sbattleship] 4,
[Scruiser] 3,
[Ssubmarine] 3,
[Sdestroyer] 2,
};
static char *shipnametab[] = {
[Scarrier] "carrier",
[Sbattleship] "battleship",
[Scruiser] "cruiser",
[Ssubmarine] "submarine",
[Sdestroyer] "destroyer",
};
static char *statenametab[] = {
[Waiting0] "Waiting0",
[Watching] "Watching",
[Ready] "Ready",
[Outlaying] "Outlaying",
[Waiting] "Waiting",
[Playing] "Playing",
};
int
isoob(Point2 cell)
{
return cell.x < 0 || cell.x >= MAPW ||
cell.y < 0 || cell.y >= MAPH;
}
int
cell2coords(char *buf, ulong len, Point2 cell)
{
assert(len >= 3+1 && !isoob(cell));
return snprint(buf, len, "%c%d", rowtab[(int)cell.y], (int)cell.x);
}
Point2
coords2cell(char *s)
{
Point2 cell;
char *p;
assert(s[0] >= 'a' && s[0] <= 'q');
cell = Pt2(0,0,1);
p = strchr(rowtab, s[0]);
cell.y = p-rowtab;
cell.x = strtol(s+1, nil, 10);
assert(!isoob(cell));
return cell;
}
int
gettile(Map *m, Point2 cell)
{
return m->map[(int)cell.x][(int)cell.y];
}
void
settile(Map *m, Point2 cell, int type)
{
assert(!isoob(cell));
m->map[(int)cell.x][(int)cell.y] = type;
}
void
settiles(Map *m, Point2 cell, int o, int ncells, int type)
{
Point2 sv;
assert(o == OH || o == OV);
sv = o == OH? Vec2(1,0): Vec2(0,1);
while(ncells-- > 0){
assert(!isoob(cell));
settile(m, cell, type);
cell = addpt2(cell, sv);
}
}
void
fprintmap(int fd, Map *m)
{
int i, j;
for(i = 0; i < MAPH; i++){
fprint(fd, "\t");
for(j = 0; j < MAPW; j++)
switch(m->map[j][i]){
case Twater: fprint(fd, "W"); break;
case Tship: fprint(fd, "S"); break;
case Thit: fprint(fd, "X"); break;
case Tmiss: fprint(fd, "O"); break;
default: fprint(fd, "?"); break;
}
fprint(fd, "\n");
}
}
int
countshipcells(Map *m)
{
int i, j, n;
n = 0;
for(i = 0; i < MAPW; i++)
for(j = 0; j < MAPH; j++)
if(gettile(m, Pt2(i,j,1)) == Tship)
n++;
return n;
}
int
shiplen(int stype)
{
if(stype < 0 || stype >= nelem(shiplentab))
return -1;
return shiplentab[stype];
}
char *
shipname(int stype)
{
if(stype < 0 || stype >= nelem(shipnametab))
return nil;
return shipnametab[stype];
}
char *
statename(int state)
{
if(state < 0 || state > nelem(statenametab))
return nil;
return statenametab[state];
}
int
min(int a, int b)
{
return a < b? a: b;
}
int
max(int a, int b)
{
return a > b? a: b;
}
int
bitpackmap(uchar *buf, ulong len, Map *m)
{
int i, j, off, n;
assert(len >= BY2MAP);
off = n = 0;
*buf = 0;
for(i = 0; i < MAPW; i++)
for(j = 0; j < MAPH; j++){
if(off >= 8){
buf[++n] = 0;
off = 0;
}
buf[n] |= (m->map[i][j] & TMASK) << off;
off += TBITS;
}
return n+1;
}
int
bitunpackmap(Map *m, uchar *buf, ulong len)
{
int i, j, off, n;
assert(len >= BY2MAP);
off = n = 0;
for(i = 0; i < MAPW; i++)
for(j = 0; j < MAPH; j++){
if(off >= 8){
n++;
off = 0;
}
m->map[i][j] = buf[n] >> off & TMASK;
off += TBITS;
}
return n+1;
}
int
chanvprint(Channel *c, char *fmt, va_list arg)
{
char *p;
int n;
p = vsmprint(fmt, arg);
if(p == nil)
sysfatal("vsmprint failed: %r");
n = sendp(c, p);
yield(); /* let recipient handle message immediately */
return n;
}
ulong
getrand(ulong max)
{
mpint *n, *r;
ulong c;
n = uitomp(max, nil);
r = mpnrand(n, genrandom, nil);
c = mptoui(r);
mpfree(n);
mpfree(r);
return c;
}
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