2 files changed, 6 insertions, 1 deletions
diff --git a/include/d/col/bg/d_bg_pc.h b/include/d/col/bg/d_bg_pc.h
index a5845962..832ea0b2 100644
--- a/include/d/col/bg/d_bg_pc.h
+++ b/include/d/col/bg/d_bg_pc.h
@@ -62,6 +62,8 @@ enum dBgPc_Attribute {
     POLY_ATTR_SLOPE_RUN = 15,
     POLY_ATTR_SAND_DEEP_SLOW = 16,
     POLY_ATTR_CURSED_WATER = 17,
+
+    POLY_ATTR_SAND_SHALLOW2 = 20,
 };
 class dBgPc {
 public:
diff --git a/include/d/col/bg/d_bg_s_acch.h b/include/d/col/bg/d_bg_s_acch.h
index f1227411..f143f187 100644
--- a/include/d/col/bg/d_bg_s_acch.h
+++ b/include/d/col/bg/d_bg_s_acch.h
@@ -140,7 +140,7 @@ public:
         /* 0x 0020 0000 */ GND_THIN_CELLING_OFF = (1 << 21),
         /* 0x 0040 0000 */ WALL_SORT = (1 << 22),
         /* 0x 0080 0000 */ LINE_DOWN = (1 << 23),
-
+        /* 0x 0100 0000 */ ACCH_FLAG_0x1000000 = (1 << 24),
         /* 0x 0200 0000 */ ACCH_FLAG_0x2000000 = (1 << 25),
         /* 0x 0400 0000 */ ACCH_FLAG_0x4000000 = (1 << 26),
         /* 0x 0800 0000 */ ACCH_FLAG_0x8000000 = (1 << 27),
@@ -281,6 +281,9 @@ public:
     void SetWaterNone() {
         mFlags |= WATER_NONE;
     }
+    void SetGroundSink() {
+        mFlags |= ACCH_FLAG_0x1000000;
+    }
     bool ChkWallHit() {
         return mFlags & WALL_HIT;
     }