SET_PROPERTY(i, EP_CAN_EXPLODE_3X3, (CAN_EXPLODE(i) &&
!CAN_EXPLODE_1X1(i) &&
!CAN_EXPLODE_DYNA(i)));
+
+ /* ---------- SP_PORT -------------------------------------------------- */
+ SET_PROPERTY(i, EP_SP_PORT, (IS_SP_ELEMENT(i) &&
+ IS_PASSABLE_INSIDE(i)));
+
#if 0
if (i == EL_CUSTOM_START + 253)
printf("::: %d, %d, %d -> %d\n",