+#else
+ SET_PROPERTY(i, EP_EXPLOSION_PROOF, (IS_INDESTRUCTIBLE(i) &&
+ IS_PROTECTED(i)));
+#endif
+#endif
+
+ if (IS_CUSTOM_ELEMENT(i))
+ {
+ /* these are additional properties which are initially false when set */
+
+ /* ---------- DONT_COLLIDE_WITH / DONT_RUN_INTO ---------------------- */
+ if (DONT_TOUCH(i))
+ SET_PROPERTY(i, EP_DONT_COLLIDE_WITH, TRUE);
+ if (DONT_COLLIDE_WITH(i))
+ SET_PROPERTY(i, EP_DONT_RUN_INTO, TRUE);
+
+ /* ---------- CAN_SMASH_ENEMIES / CAN_SMASH_PLAYER ------------------- */
+ if (CAN_SMASH_EVERYTHING(i))
+ SET_PROPERTY(i, EP_CAN_SMASH_ENEMIES, TRUE);
+ if (CAN_SMASH_ENEMIES(i))
+ SET_PROPERTY(i, EP_CAN_SMASH_PLAYER, TRUE);
+ }
+
+ /* ---------- CAN_SMASH ------------------------------------------------ */
+ SET_PROPERTY(i, EP_CAN_SMASH, (CAN_SMASH_PLAYER(i) ||
+ CAN_SMASH_ENEMIES(i) ||
+ CAN_SMASH_EVERYTHING(i)));
+
+#if 0
+ /* ---------- CAN_EXPLODE ---------------------------------------------- */
+ SET_PROPERTY(i, EP_CAN_EXPLODE, (CAN_EXPLODE_BY_FIRE(i) ||
+ CAN_EXPLODE_SMASHED(i) ||
+ CAN_EXPLODE_IMPACT(i)));
+#endif
+
+#if 0
+ /* ---------- CAN_EXPLODE_3X3 ------------------------------------------ */
+#if 0
+ SET_PROPERTY(i, EP_CAN_EXPLODE_3X3, (!CAN_EXPLODE_1X1(i) &&
+ !CAN_EXPLODE_CROSS(i)));
+#else
+ SET_PROPERTY(i, EP_CAN_EXPLODE_3X3, (CAN_EXPLODE(i) &&
+ !CAN_EXPLODE_1X1(i) &&
+ !CAN_EXPLODE_CROSS(i)));
+#endif
+#endif
+
+ /* ---------- CAN_EXPLODE_BY_FIRE -------------------------------------- */
+ SET_PROPERTY(i, EP_CAN_EXPLODE_BY_FIRE, (CAN_EXPLODE(i) &&
+ EXPLODES_BY_FIRE(i)));
+
+ /* ---------- CAN_EXPLODE_SMASHED -------------------------------------- */
+ SET_PROPERTY(i, EP_CAN_EXPLODE_SMASHED, (CAN_EXPLODE(i) &&
+ EXPLODES_SMASHED(i)));
+
+ /* ---------- CAN_EXPLODE_IMPACT --------------------------------------- */
+ SET_PROPERTY(i, EP_CAN_EXPLODE_IMPACT, (CAN_EXPLODE(i) &&
+ EXPLODES_IMPACT(i)));
+
+ /* ---------- CAN_EXPLODE_BY_DRAGONFIRE -------------------------------- */
+ SET_PROPERTY(i, EP_CAN_EXPLODE_BY_DRAGONFIRE, CAN_EXPLODE_BY_FIRE(i));
+
+ /* ---------- CAN_EXPLODE_BY_EXPLOSION --------------------------------- */
+ SET_PROPERTY(i, EP_CAN_EXPLODE_BY_EXPLOSION, (CAN_EXPLODE_BY_FIRE(i) ||
+ i == EL_BLACK_ORB));
+
+ /* ---------- COULD_MOVE_INTO_ACID ------------------------------------- */
+ SET_PROPERTY(i, EP_COULD_MOVE_INTO_ACID, (ELEM_IS_PLAYER(i) ||
+ CAN_MOVE(i) ||
+ IS_CUSTOM_ELEMENT(i)));
+
+ /* ---------- MAYBE_DONT_COLLIDE_WITH ---------------------------------- */
+ SET_PROPERTY(i, EP_MAYBE_DONT_COLLIDE_WITH, (i == EL_SP_SNIKSNAK ||
+ i == EL_SP_ELECTRON));
+
+ /* ---------- DIGGABLE_WITH_GRAVITY ------------------------------------ */
+ SET_PROPERTY(i, EP_DIGGABLE_WITH_GRAVITY, (IS_DIGGABLE(i) &&
+ !IS_SP_BUGGY_BASE(i)));
+
+ /* ---------- CAN_MOVE_INTO_ACID --------------------------------------- */
+ if (COULD_MOVE_INTO_ACID(i) && !IS_CUSTOM_ELEMENT(i))
+ SET_PROPERTY(i, EP_CAN_MOVE_INTO_ACID,
+ getMoveIntoAcidProperty(&level, i));
+
+ /* ---------- DONT_COLLIDE_WITH ---------------------------------------- */
+ if (MAYBE_DONT_COLLIDE_WITH(i))
+ SET_PROPERTY(i, EP_DONT_COLLIDE_WITH,
+ getDontCollideWithProperty(&level, i));
+
+ /* ---------- SP_PORT -------------------------------------------------- */
+ SET_PROPERTY(i, EP_SP_PORT, (IS_SP_ELEMENT(i) &&
+ IS_PASSABLE_INSIDE(i)));
+
+ /* ---------- CAN_CHANGE ----------------------------------------------- */
+ SET_PROPERTY(i, EP_CAN_CHANGE, FALSE); /* default: cannot change */
+ for (j = 0; j < element_info[i].num_change_pages; j++)
+ if (element_info[i].change_page[j].can_change)
+ SET_PROPERTY(i, EP_CAN_CHANGE, TRUE);
+
+ /* ---------- GFX_CRUMBLED --------------------------------------------- */
+ SET_PROPERTY(i, EP_GFX_CRUMBLED,
+ element_info[i].crumbled[ACTION_DEFAULT] != IMG_EMPTY);