+
+ if (level->game_version < VERSION_IDENT(2,2,0,0))
+ level->use_spring_bug = TRUE;
+
+ if (level->game_version < VERSION_IDENT(3,1,0,0))
+ {
+ int i, j;
+
+ level->can_move_into_acid_bits = 0; /* nothing can move into acid */
+ level->dont_collide_with_bits = 0; /* nothing is deadly when colliding */
+
+ setMoveIntoAcidProperty(level, EL_ROBOT, TRUE);
+ setMoveIntoAcidProperty(level, EL_SATELLITE, TRUE);
+ setMoveIntoAcidProperty(level, EL_PENGUIN, TRUE);
+ setMoveIntoAcidProperty(level, EL_BALLOON, TRUE);
+
+ for (i = 0; i < NUM_CUSTOM_ELEMENTS; i++)
+ SET_PROPERTY(EL_CUSTOM_START + i, EP_CAN_MOVE_INTO_ACID, TRUE);
+
+ for (i = 0; i < NUM_CUSTOM_ELEMENTS; i++)
+ {
+ int element = EL_CUSTOM_START + i;
+ struct ElementInfo *ei = &element_info[element];
+
+ for (j = 0; j < ei->num_change_pages; j++)
+ {
+ struct ElementChangeInfo *change = &ei->change_page[j];
+
+ change->trigger_player = CH_PLAYER_ANY;
+ change->trigger_page = CH_PAGE_ANY;
+ }
+ }
+ }