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#define MOVESETS_C
#include "movesets.h"
static bool allowed_HTM(Move m);
static bool allowed_URF(Move m);
static bool allowed_eofb(Move m);
static bool allowed_drud(Move m);
static bool allowed_htr(Move m);
static bool can_append_HTM(Move l2, Move l1, Move m);
static bool can_append_HTM_cached(Alg *alg, Move m, bool inverse);
static bool cancel_niss_HTM_cached(Alg *alg);
static void init_can_append_HTM();
Moveset
moveset_HTM = {
.name = "HTM",
.allowed = allowed_HTM,
.can_append = can_append_HTM_cached,
.cancel_niss = cancel_niss_HTM_cached,
};
Moveset
moveset_URF = {
.name = "URF",
.allowed = allowed_URF,
.can_append = can_append_HTM_cached,
.cancel_niss = cancel_niss_HTM_cached,
};
Moveset
moveset_eofb = {
.name = "eofb",
.allowed = allowed_eofb,
.can_append = can_append_HTM_cached,
.cancel_niss = cancel_niss_HTM_cached,
};
Moveset
moveset_drud = {
.name = "drud",
.allowed = allowed_drud,
.can_append = can_append_HTM_cached,
.cancel_niss = cancel_niss_HTM_cached,
};
Moveset
moveset_htr = {
.name = "htr",
.allowed = allowed_htr,
.can_append = can_append_HTM_cached,
.cancel_niss = cancel_niss_HTM_cached,
};
Moveset *
all_movesets[] = {
&moveset_HTM,
&moveset_URF,
&moveset_eofb,
&moveset_drud,
&moveset_htr,
NULL
};
static uint64_t can_append_HTM_mask[NMOVES][NMOVES];
static bool
allowed_HTM(Move m)
{
return m >= U && m <= B3;
}
static bool
allowed_URF(Move m)
{
Move b = base_move(m);
return b == U || b == R || b == F;
}
static bool
allowed_eofb(Move m)
{
Move b = base_move(m);
return b == U || b == D || b == R || b == L ||
((b == F || b == B) && m == b+1);
}
static bool
allowed_drud(Move m)
{
Move b = base_move(m);
return b == U || b == D ||
((b == R || b == L || b == F || b == B) && m == b + 1);
}
static bool
allowed_htr(Move m)
{
Move b = base_move(m);
return moveset_HTM.allowed(m) && m == b + 1;
}
static bool
can_append_HTM(Move l2, Move l1, Move m)
{
bool cancel, cancel_last, cancel_swap;
cancel_last = l1 != NULLMOVE && base_move(l1) == base_move(m);
cancel_swap = l2 != NULLMOVE && base_move(l2) == base_move(m);
cancel = cancel_last || (commute(l1, l2) && cancel_swap);
return !cancel;
}
static bool
can_append_HTM_cached(Alg *alg, Move m, bool inverse)
{
Move *moves, l1, l2;
uint64_t mbit;
int n;
if (inverse) {
moves = alg->move_inverse;
n = alg->len_inverse;
} else {
moves = alg->move_normal;
n = alg->len_normal;
}
l1 = n > 0 ? moves[n-1] : NULLMOVE;
l2 = n > 1 ? moves[n-2] : NULLMOVE;
mbit = ((uint64_t)1) << m;
return can_append_HTM_mask[l2][l1] & mbit;
}
static bool
cancel_niss_HTM_cached(Alg *alg)
{
Move i1, i2;
int n;
bool can_first, can_swap;
n = alg->len_inverse;
i1 = n > 0 ? alg->move_inverse[n-1] : NULLMOVE;
i2 = n > 1 ? alg->move_inverse[n-2] : NULLMOVE;
can_first = can_append_HTM_cached(alg, inverse_move(i1), false);
can_swap = can_append_HTM_cached(alg, inverse_move(i2), false);
return can_first && (!commute(i1, i2) || can_swap);
}
static void
init_can_append_HTM()
{
Move l2, l1, m;
for (l1 = 0; l1 < NMOVES; l1++)
for (l2 = 0; l2 < NMOVES; l2++)
for (m = 0; m < NMOVES; m++)
if (can_append_HTM(l2, l1, m))
can_append_HTM_mask[l2][l1]
|= (((uint64_t)1) << m);
}
void
init_moveset(Moveset *ms)
{
int j;
Move m;
for (j = 0, m = U; m < NMOVES; m++)
if (ms->allowed(m))
ms->sorted_moves[j++] = m;
ms->sorted_moves[j] = NULLMOVE;
/* TODO: should be here? maybe just init all movesets together anyway... */
init_can_append_HTM();
}
void
init_movesets()
{
int i;
for (i = 0; all_movesets[i] != NULL; i++)
init_moveset(all_movesets[i]);
}
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