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#include "steps.h"
/* Standard checkers (return lower bound) ************************************/
static int estimate_eofb_HTM(CubeTarget ct);
static int estimate_coud_HTM(CubeTarget ct);
static int estimate_coud_URF(CubeTarget ct);
static int estimate_corners_HTM(CubeTarget ct);
static int estimate_cornershtr_HTM(CubeTarget ct);
static int estimate_corners_URF(CubeTarget ct);
static int estimate_cornershtr_URF(CubeTarget ct);
static int estimate_drud_HTM(CubeTarget ct);
static int estimate_optimal_HTM(CubeTarget ct);
/* Steps *********************************************************************/
Step
eofb_HTM = {
.estimate = estimate_eofb_HTM,
.ready = check_centers,
.moveset = moveset_HTM
};
Step
coud_HTM = {
.estimate = estimate_coud_HTM,
.ready = check_centers,
.moveset = moveset_HTM
};
Step
coud_URF = {
.estimate = estimate_coud_URF,
.ready = check_nothing,
.moveset = moveset_URF
};
Step
corners_HTM = {
.estimate = estimate_corners_HTM,
.ready = check_centers,
.moveset = moveset_HTM
};
Step
cornershtr_HTM = {
.estimate = estimate_cornershtr_HTM,
.ready = check_centers,
.moveset = moveset_HTM
};
Step
cornershtr_URF = {
.estimate = estimate_cornershtr_URF,
.ready = check_nothing,
.moveset = moveset_URF
};
Step
corners_URF = {
.estimate = estimate_corners_URF,
.ready = check_nothing,
.moveset = moveset_URF
};
Step
drud_HTM = {
.estimate = estimate_drud_HTM,
.ready = check_centers,
.moveset = moveset_HTM
};
Step
optimal_HTM = {
.estimate = estimate_optimal_HTM,
.ready = check_centers,
.moveset = moveset_HTM
};
/* Pruning tables ************************************************************/
PruneData
pd_eofb_HTM = {
.filename = "ptable_eofb_HTM",
.coord = &coord_eofb,
.moveset = moveset_HTM,
.ntrans = 1,
.trans = trans_group_trivial
};
PruneData
pd_coud_HTM = {
.filename = "ptable_coud_HTM",
.coord = &coord_coud,
.moveset = moveset_HTM,
.ntrans = 1,
.trans = trans_group_trivial
};
PruneData
pd_cornershtr_HTM = {
.filename = "ptable_cornershtr_withcosets_HTM",
.coord = &coord_cornershtr,
.moveset = moveset_HTM,
.ntrans = 1,
.trans = trans_group_trivial
};
PruneData
pd_corners_HTM = {
.filename = "ptable_corners_HTM",
.coord = &coord_corners,
.moveset = moveset_HTM,
.ntrans = 1,
.trans = trans_group_trivial
};
PruneData
pd_drud_HTM = {
.filename = "ptable_drud_HTM",
.coord = &coord_drud,
.moveset = moveset_HTM,
.ntrans = 1,
.trans = trans_group_trivial
};
PruneData
pd_drud_sym16_HTM = {
.filename = "ptable_drud_sym16_HTM",
.coord = &coord_drud_sym16,
.moveset = moveset_HTM,
.ntrans = 16,
.trans = trans_group_udfix
};
PruneData
pd_khuge_HTM = {
.filename = "ptable_khuge_HTM",
.coord = &coord_khuge,
.moveset = moveset_HTM,
.ntrans = 16,
.trans = trans_group_udfix
};
/* Standard checkers (return lower bound) ************************************/
static int
estimate_eofb_HTM(CubeTarget ct)
{
if (!pd_eofb_HTM.generated)
genptable(&pd_eofb_HTM);
return ptableval(&pd_eofb_HTM, ct.cube);
}
static int
estimate_coud_HTM(CubeTarget ct)
{
if (!pd_coud_HTM.generated)
genptable(&pd_coud_HTM);
return ptableval(&pd_coud_HTM, ct.cube);
}
static int
estimate_coud_URF(CubeTarget ct)
{
/* TODO: I can improve this by checking first the orientation of
* the corner in DBL and use that as a reference */
CubeTarget ct2 = {.cube = apply_move(z, ct.cube), .target = ct.target};
CubeTarget ct3 = {.cube = apply_move(x, ct.cube), .target = ct.target};
int ud = estimate_coud_HTM(ct);
int rl = estimate_coud_HTM(ct2);
int fb = estimate_coud_HTM(ct3);
return MIN(ud, MIN(rl, fb));
}
static int
estimate_corners_HTM(CubeTarget ct)
{
if (!pd_corners_HTM.generated)
genptable(&pd_corners_HTM);
return ptableval(&pd_corners_HTM, ct.cube);
}
static int
estimate_cornershtr_HTM(CubeTarget ct)
{
if (!pd_cornershtr_HTM.generated)
genptable(&pd_cornershtr_HTM);
return ptableval(&pd_cornershtr_HTM, ct.cube);
}
static int
estimate_cornershtr_URF(CubeTarget ct)
{
/* TODO: I can improve this by checking first the corner in DBL
* and use that as a reference */
int c, ret = 15;
Trans i;
for (i = 0; i < NROTATIONS; i++) {
ct.cube = apply_alg(rotation_alg(i), ct.cube);
c = estimate_cornershtr_HTM(ct);
ret = MIN(ret, c);
}
return ret;
}
static int
estimate_corners_URF(CubeTarget ct)
{
/* TODO: I can improve this by checking first the corner in DBL
* and use that as a reference */
int c, ret = 15;
Trans i;
for (i = 0; i < NROTATIONS; i++) {
ct.cube = apply_alg(rotation_alg(i), ct.cube);
c = estimate_corners_HTM(ct);
ret = MIN(ret, c);
}
return ret;
}
static int
estimate_drud_HTM(CubeTarget ct)
{
/*
if (!pd_drud_HTM.generated)
genptable(&pd_drud_HTM);
return ptableval(&pd_drud_HTM, ct.cube);
*/
if (!pd_drud_sym16_HTM.generated)
genptable(&pd_drud_sym16_HTM);
return ptableval(&pd_drud_sym16_HTM, ct.cube);
}
static int
estimate_optimal_HTM(CubeTarget ct)
{
int dr1, dr2, dr3, cor, ret;
Cube cube = ct.cube;
if (!pd_khuge_HTM.generated)
genptable(&pd_khuge_HTM);
dr1 = ptableval(&pd_khuge_HTM, cube);
cor = estimate_corners_HTM(ct);
ret = MAX(dr1, cor);
if (ret > ct.target)
return ret;
cube = apply_trans(rf, ct.cube);
dr2 = ptableval(&pd_khuge_HTM, cube);
ret = MAX(ret, dr2);
if (ret > ct.target)
return ret;
cube = apply_trans(fd, ct.cube);
dr3 = ptableval(&pd_khuge_HTM, cube);
/* Michiel de Bondt's trick */
if (dr1 == dr2 && dr2 == dr3 && dr1 != 0)
dr3++;
return MAX(ret, dr3);
}
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