1 files changed, 112 insertions, 0 deletions

diff --git a/src/steps.c b/src/steps.c
index b499b30..bdcbd2a 100644
--- a/src/steps.c
+++ b/src/steps.c
@@ -14,6 +14,7 @@ static bool             check_eofb(Cube cube);
 static bool             check_drud(Cube cube);
 static bool             check_drud_or_drrl(Cube cube);
 static bool             check_htr(Cube cube);
+static bool             check_drudslice(Cube cube);
 
 static int              estimate_eofb_HTM(DfsArg *arg);
 static int              estimate_coud_HTM(DfsArg *arg);
@@ -26,6 +27,7 @@ static int              estimate_drud_HTM(DfsArg *arg);
 static int              estimate_drud_eofb(DfsArg *arg);
 static int              estimate_dr_eofb(DfsArg *arg);
 static int              estimate_drudfin_drud(DfsArg *arg);
+static int              estimate_drudslice_drud(DfsArg *arg);
 static int              estimate_htr_drud(DfsArg *arg);
 static int              estimate_cp_drud(DfsArg *arg);
 static int              estimate_htrfin_htr(DfsArg *arg);
@@ -736,6 +738,83 @@ drrl_eoud = {
         .ntables   = 1,
 };
 
+/* DR finish minus slice steps */
+Step
+dranyslice_DR = {
+        .shortname = "drslice",
+        .name      = "DR finish minus slice on any axis without breaking DR",
+
+        .final     = true,
+        .is_done   = check_drudslice,
+        .estimate  = estimate_drudslice_drud,
+        .ready     = check_drud,
+        .ready_msg = check_drany_msg,
+        .is_valid  = always_valid,
+        .moveset   = &moveset_drud,
+
+        .detect    = detect_pretrans_drud,
+
+        .tables    = {&pd_drudfin_noE_sym16_drud},
+        .ntables   = 1,
+};
+
+Step
+drudslice_drud = {
+        .shortname = "drudslice",
+        .name      = "DR finish minus slice on U/D without breaking DR",
+
+        .final     = true,
+        .is_done   = check_drudslice,
+        .estimate  = estimate_drudslice_drud,
+        .ready     = check_drud,
+        .ready_msg = check_dr_msg,
+        .is_valid  = always_valid,
+        .moveset   = &moveset_drud,
+
+        .pre_trans = uf,
+
+        .tables    = {&pd_drudfin_noE_sym16_drud},
+        .ntables   = 1,
+};
+
+Step
+drrlslice_drrl = {
+        .shortname = "drrlslice",
+        .name      = "DR finish minus slice on R/L without breaking DR",
+
+        .final     = true,
+        .is_done   = check_drudslice,
+        .estimate  = estimate_drudslice_drud,
+        .ready     = check_drud,
+        .ready_msg = check_dr_msg,
+        .is_valid  = always_valid,
+        .moveset   = &moveset_drud,
+
+        .pre_trans = rf,
+
+        .tables    = {&pd_drudfin_noE_sym16_drud},
+        .ntables   = 1,
+};
+
+Step
+drfbslice_drfb = {
+        .shortname = "drfbslice",
+        .name      = "DR finish minus slice on F/B without breaking DR",
+
+        .final     = true,
+        .is_done   = check_drudslice,
+        .estimate  = estimate_drudslice_drud,
+        .ready     = check_drud,
+        .ready_msg = check_dr_msg,
+        .is_valid  = always_valid,
+        .moveset   = &moveset_drud,
+
+        .pre_trans = fd,
+
+        .tables    = {&pd_drudfin_noE_sym16_drud},
+        .ntables   = 1,
+};
+
 /* DR finish steps */
 Step
 dranyfin_DR = {
@@ -1032,6 +1111,11 @@ Step *steps[] = {
         &drrlfin_drrl,
         &drfbfin_drfb,
 
+        &dranyslice_DR,
+        &drudslice_drud,
+        &drrlslice_drrl,
+        &drfbslice_drfb,
+
         &htr_any,
         &htr_drud,
         &htr_drrl,
@@ -1128,6 +1212,21 @@ check_htr(Cube cube)
         return check_drud(cube) && coord_htr_drud.index(cube) == 0;
 }
 
+static bool
+check_drudslice(Cube cube)
+{
+        int i;
+        Cube aux;
+
+        aux = cube;
+        for (i = 0; i < 4; i++, aux = apply_move(y, aux))
+                if (coord_cp.index(aux) == 0 &&
+                    coord_epud.index(aux) == 0)
+                        return true;
+
+        return false;
+}
+
 static int
 estimate_eofb_HTM(DfsArg *arg)
 {
@@ -1254,6 +1353,19 @@ estimate_drudfin_drud(DfsArg *arg)
 }
 
 static int
+estimate_drudslice_drud(DfsArg *arg)
+{
+        int i, ret = 20;
+        Cube aux;
+
+        aux = arg->cube;
+        for (i = 0; i < 4; i++, aux = apply_move(y, aux))
+                ret = MIN(ret, ptableval(&pd_drudfin_noE_sym16_drud, aux));
+
+        return ret;
+}
+
+static int
 estimate_htr_drud(DfsArg *arg)
 {
         return ptableval(&pd_htr_drud, arg->cube);