These functions allow access to Crawl's global state, as well as providing useful utility methods.
| Syntax | Returns | Description |
| reset_level | | |
| has_tag | | |
| normalise | | |
| lua_marker | | |
| mapsize | | |
| colour_at | | |
| fprop_at | | |
| cloud_at | | |
| terrain_changed | | |
| fprop_changed | | |
| points_connected | | |
| any_point_connected | | |
| has_exit_from | | |
| gly_point | | |
| gly_points | | |
| original_map | | |
| load_des_file | | |
| register_listener | | |
| remove_listener | | |
| remove_marker | | |
| num_matching_markers | | |
| change_level_flags | | |
| get_floor_colour | | |
| get_rock_colour | | |
| change_floor_colour | | |
| change_rock_colour | | |
| set_branch_epilogue | | |
| set_border_fill_type | | |
| set_feature_name | | |
| floor_halo | | |
| random_walk | | |
| apply_area_cloud | | |
| place_cloud | | |
| delete_cloud | | |
| noisy | | |
| is_passable | | |
| map_register_flag | | |
| register_feature_marker | | |
| register_lua_marker | | |
| with_map_bounds_fn | | |
| with_map_anchors | | |
| map_by_tag | | |
| map_by_name | | |
| map_in_depth | | |
| map_by_place | | |
| place_map | | |
| reuse_map | | |
| resolve_map | | |
| in_vault | | |
| map_parameters | | |
| maps_used_here | | |
| vault_at | | |
| find_marker_position_by_prop | | |
| find_marker_positions_by_prop | | |
| find_markers_by_prop | | |
| marker_at_pos | | |
| is_validating | | |
| fill_grd_area | | |
| apply_tide | | |
| Syntax | Returns | Description |
| feature_number | | |
| feature_name | | |
| feature_desc | | |
| feature_desc_at | | |
| seen_replace_feat | | |
| grid | | |
| max_bounds | | |
| in_bounds | | |
| distance | | |
TODO: Add the functions defined in other source files.
