C++ vconfig::child方法代码示例

/**
 * Updates *this based on @a vcfg.
 * This corresponds to what can appear in [set_menu_item].
 */
void wml_menu_item::update(const vconfig & vcfg)
{
	const bool old_use_hotkey = use_hotkey_;
	// Tracks whether or not the hotkey has been updated.
	bool hotkey_updated = false;

	if ( vcfg.has_attribute("image") )
		image_ = vcfg["image"].str();

	if ( vcfg.has_attribute("description") ) {
		description_ = vcfg["description"].t_str();
		hotkey_updated = true;
	}

	if ( vcfg.has_attribute("needs_select") )
		needs_select_ = vcfg["needs_select"].to_bool();

	if ( const vconfig & child = vcfg.child("show_if") ) {
		show_if_ = child;
		show_if_.make_safe();
	}

	if ( const vconfig & child = vcfg.child("filter_location") ) {
		filter_location_ = child;
		filter_location_.make_safe();
	}

	if ( const vconfig & child = vcfg.child("default_hotkey") ) {
		default_hotkey_ = child.get_parsed_config();
		hotkey_updated = true;
	}

	if ( vcfg.has_attribute("use_hotkey") ) {
		const config::attribute_value & use_hotkey_av = vcfg["use_hotkey"];

		use_hotkey_ = use_hotkey_av.to_bool(true);
		use_wml_menu_ = use_hotkey_av.str() != "only";
	}

	if ( const vconfig & cmd = vcfg.child("command") ) {
		const bool delayed = cmd["delayed_variable_substitution"].to_bool(true);
		update_command(delayed ? cmd.get_config() : cmd.get_parsed_config());
	}


	// Update the registered hotkey?

	if ( use_hotkey_ && !old_use_hotkey )
		// The hotkey needs to be enabled.
		hotkey::add_wml_hotkey(hotkey_id_, description_, default_hotkey_);

	else if ( use_hotkey_ && hotkey_updated )
		// The hotkey needs to be updated.
		hotkey::add_wml_hotkey(hotkey_id_, description_, default_hotkey_);

	else if ( !use_hotkey_ && old_use_hotkey )
		// The hotkey needs to be disabled.
		hotkey::remove_wml_hotkey(hotkey_id_);
}

	/**
	 * Implements the lifting and resetting of fog via WML.
	 * Keeping affect_normal_fog as false causes only the fog override to be affected.
	 * Otherwise, fog lifting will be implemented similar to normal sight (cannot be
	 * individually reset and ends at the end of the turn), and fog resetting will, in
	 * addition to removing overrides, extend the specified teams' normal fog to all
	 * hexes.
	 */
	void toggle_fog(const bool clear, const vconfig& cfg, const bool affect_normal_fog=false)
	{
		// Filter the sides.
		const vconfig &ssf = cfg.child("filter_side");
		const side_filter s_filter(ssf.null() ? vconfig::empty_vconfig() : ssf, resources::filter_con);
		const std::vector<int> sides = s_filter.get_teams();

		// Filter the locations.
		std::set<map_location> locs;
		const terrain_filter t_filter(cfg, resources::filter_con);
		t_filter.get_locations(locs, true);

		// Loop through sides.
		BOOST_FOREACH(const int &side_num, sides)
		{
			team &t = (*resources::teams)[side_num-1];
			if ( !clear )
			{
				// Extend fog.
				t.remove_fog_override(locs);
				if ( affect_normal_fog )
					t.refog();
			}
			else if ( !affect_normal_fog )
				// Force the locations clear of fog.
				t.add_fog_override(locs);
			else
				// Simply clear fog from the locations.
				BOOST_FOREACH(const map_location &hex, locs)
					t.clear_fog(hex);
		}

void wml_animation_internal(unit_animator &animator, const vconfig &cfg, const map_location &default_location)
{
	unit_const_ptr u;

	unit_map::const_iterator u_it = resources::units->find(default_location);
	if (u_it.valid()) {
		u = u_it.get_shared_ptr();
	}

	// Search for a valid unit filter,
	// and if we have one, look for the matching unit
	vconfig filter = cfg.child("filter");
	if(!filter.null()) {
		const unit_filter ufilt(filter, resources::filter_con);
		u = ufilt.first_match_on_map();
	}

	// We have found a unit that matches the filter
	if (u && !resources::screen->fogged(u->get_location()))
	{
		attack_type *primary = nullptr;
		attack_type *secondary = nullptr;
		Uint32 text_color;
		unit_animation::hit_type hits=  unit_animation::hit_type::INVALID;
		std::vector<attack_type> attacks = u->attacks();
		std::vector<attack_type>::iterator itor;
		std::unique_ptr<attack_type> dummy_primary;
		std::unique_ptr<attack_type> dummy_secondary;

		// death and victory animations are handled here because usually
		// the code iterates through all the unit's attacks
		// but in these two specific cases we need to create dummy attacks
		// to fire correctly certain animations
		// this is especially evident with the Wose's death animations
		if (cfg["flag"] == "death" || cfg["flag"] == "victory") {
			filter = cfg.child("primary_attack");
			if(!filter.null()) {
				dummy_primary.reset(new attack_type(filter.get_config()));
				primary = dummy_primary.get();
			}
			filter = cfg.child("secondary_attack");
			if(!filter.null()) {
				dummy_secondary.reset(new attack_type(filter.get_config()));
				secondary = dummy_secondary.get();
			}
		}

		else {
			filter = cfg.child("primary_attack");
			if(!filter.null()) {
				for(itor = attacks.begin(); itor != attacks.end(); ++itor){
					if(itor->matches_filter(filter.get_parsed_config())) {
						primary = &*itor;
						break;
					}
				}
			}

			filter = cfg.child("secondary_attack");
			if(!filter.null()) {
				for(itor = attacks.begin(); itor != attacks.end(); ++itor){
					if(itor->matches_filter(filter.get_parsed_config())) {
						secondary = &*itor;
						break;
					}
				}
			}
		}

		if(cfg["hits"] == "yes" || cfg["hits"] == "hit") {
			hits = unit_animation::hit_type::HIT;
		}
		if(cfg["hits"] == "no" || cfg["hits"] == "miss") {
			hits = unit_animation::hit_type::MISS;
		}
		if( cfg["hits"] == "kill" ) {
			hits = unit_animation::hit_type::KILL;
		}
		if(cfg["red"].empty() && cfg["green"].empty() && cfg["blue"].empty()) {
			text_color = display::rgb(0xff,0xff,0xff);
		} else {
			text_color = display::rgb(cfg["red"], cfg["green"], cfg["blue"]);
		}
		resources::screen->scroll_to_tile(u->get_location(), game_display::ONSCREEN, true, false);
		vconfig t_filter = cfg.child("facing");
		map_location secondary_loc = map_location::null_location();
		if(!t_filter.empty()) {
			terrain_filter filter(t_filter, resources::filter_con);
			std::set<map_location> locs;
			filter.get_locations(locs);
			if (!locs.empty() && u->get_location() != *locs.begin()) {
				map_location::DIRECTION dir =u->get_location().get_relative_dir(*locs.begin());
				u->set_facing(dir);
				secondary_loc = u->get_location().get_direction(dir);
			}
		}
		config::attribute_value text = u->gender() == unit_race::FEMALE ? cfg["female_text"] : cfg["male_text"];
		if(text.blank()) {
			text = cfg["text"];
		}
//.........这里部分代码省略.........

void part::resolve_wml(const vconfig &cfg)
{
	if(cfg.null()) {
		return;
	}

	// Converts shortcut syntax to members of [background_layer]
	background_layer bl;

	if(cfg.has_attribute("background")) {
		bl.set_file(cfg["background"].str());
	}
	if(cfg.has_attribute("scale_background")) {
		bl.set_scale_horizontally(cfg["scale_background"].to_bool(true));
		bl.set_scale_vertically(cfg["scale_background"].to_bool(true));
	} else {
		if(cfg.has_attribute("scale_background_vertically")) {
			bl.set_scale_vertically(cfg["scale_background_vertically"].to_bool(true));
		}
		if(cfg.has_attribute("scale_background_horizontally")) {
			bl.set_scale_horizontally(cfg["scale_background_horizontally"].to_bool(true));
		}
	}
	if(cfg.has_attribute("tile_background")) {
		bl.set_tile_horizontally(cfg["tile_background"].to_bool(false));
		bl.set_tile_vertically(cfg["tile_background"].to_bool(false));
	} else {
		if(cfg.has_attribute("tile_background_vertically")) {
			bl.set_tile_vertically(cfg["tile_background_vertically"].to_bool(false));
		}
		if(cfg.has_attribute("tile_background_horizontally")) {
			bl.set_tile_vertically(cfg["tile_background_horizontally"].to_bool(false));
		}
	}
	if(cfg.has_attribute("keep_aspect_ratio")) {
		bl.set_keep_aspect_ratio(cfg["keep_aspect_ratio"].to_bool(true));
	}
	background_layers_.push_back(bl);


	if(cfg.has_attribute("show_title")) {
		show_title_ = cfg["show_title"].to_bool();
	}
	if(cfg.has_attribute("story")) {
		text_ = cfg["story"].str();
	}
	if(cfg.has_attribute("title")) {
		text_title_ = cfg["title"].str();
		if(!cfg.has_attribute("show_title")) {
			show_title_ = true;
		}
	}
	if(cfg.has_attribute("text_layout")) {
		text_block_loc_ = string_tblock_loc(cfg["text_layout"]);
	}
	if(cfg.has_attribute("title_alignment")) {
		title_alignment_ = string_title_align(cfg["title_alignment"]);
	}
	if(cfg.has_attribute("music")) {
		music_ = cfg["music"].str();
	}
	if(cfg.has_attribute("sound")) {
		sound_ = cfg["sound"].str();
	}

	// Execution flow/branching/[image]
	for(vconfig::all_children_iterator i = cfg.ordered_begin(); i != cfg.ordered_end(); ++ i) {
		// i->first and i->second are goddamn temporaries; do not make references
		const std::string key = i->first;
		const vconfig node = i->second;

		// [background_layer]
		if (key == "background_layer") {
			background_layers_.push_back(node.get_parsed_config());
		}
		// [image]
		else if(key == "image") {
			floating_images_.push_back(node.get_parsed_config());
		}
		// [if]
		else if(key == "if") {
			// check if the [if] tag has a [then] child;
			// if we try to execute a non-existing [then], we get a segfault
			if (game_events::conditional_passed(node)) {
				if (node.has_child("then")) {
					resolve_wml(node.child("then"));
				}
			}
			// condition not passed, check [elseif] and [else]
			else {
				// get all [elseif] children and set a flag
				vconfig::child_list elseif_children = node.get_children("elseif");
				bool elseif_flag = false;
				// for each [elseif]: test if it has a [then] child
				// if the condition matches, execute [then] and raise flag
				for (vconfig::child_list::const_iterator elseif = elseif_children.begin(); elseif != elseif_children.end(); ++elseif) {
					if (game_events::conditional_passed(*elseif)) {
						if (elseif->has_child("then")) {
							resolve_wml(elseif->child("then"));
						}
//.........这里部分代码省略.........

bool basic_unit_filter_impl::internal_matches_filter(const unit & u, const map_location& loc, const unit* u2) const
{
	if (!vcfg["name"].blank() && vcfg["name"].t_str() != u.name()) {
		return false;
	}

	if (!vcfg["id"].empty()) {
		std::vector<std::string> id_list = utils::split(vcfg["id"]);
		if (std::find(id_list.begin(), id_list.end(), u.id()) == id_list.end()) {
			return false;
		}
	}

	// Allow 'speaker' as an alternative to id, since people use it so often
	if (!vcfg["speaker"].blank() && vcfg["speaker"].str() != u.id()) {
		return false;
	}

	if (vcfg.has_child("filter_location")) {
		if (vcfg.count_children("filter_location") > 1) {
			FAIL("Encountered multiple [filter_location] children of a standard unit filter. "
				 "This is not currently supported and in all versions of wesnoth would have "
				 "resulted in the later children being ignored. You must use [and] or similar "
				 "to achieve the desired result.");
		}
		terrain_filter filt(vcfg.child("filter_location"), &fc_, use_flat_tod_);
		if (!filt.match(loc)) {
			return false;
		}
	}

	if(vcfg.has_child("filter_side")) {
		if (vcfg.count_children("filter_side") > 1) {
			FAIL("Encountered multiple [filter_side] children of a standard unit filter. "
				 "This is not currently supported and in all versions of wesnoth would have "
				 "resulted in the later children being ignored. You must use [and] or similar "
				 "to achieve the desired result.");
		}
		side_filter filt(vcfg.child("filter_side"), &fc_);
		if(!filt.match(u.side()))
			return false;
	}

	// Also allow filtering on location ranges outside of the location filter
	if (!vcfg["x"].blank() || !vcfg["y"].blank()){
		if(vcfg["x"] == "recall" && vcfg["y"] == "recall") {
			//locations on the map are considered to not be on a recall list
			if (fc_.get_disp_context().map().on_board(loc))
			{
				return false;
			}
		} else if(vcfg["x"].empty() && vcfg["y"].empty()) {
			return false;
		} else if(!loc.matches_range(vcfg["x"], vcfg["y"])) {
			return false;
		}
	}

	// The type could be a comma separated list of types
	if (!vcfg["type"].empty()) {
		std::vector<std::string> types = utils::split(vcfg["type"]);
		if (std::find(types.begin(), types.end(), u.type_id()) == types.end()) {
			return false;
		}
	}

	// Shorthand for all advancements of a given type
	if (!vcfg["type_tree"].empty()) {
		std::set<std::string> types;
		for(const std::string type : utils::split(vcfg["type_tree"])) {
			if(types.count(type)) {
				continue;
			}
			if(const unit_type* ut = unit_types.find(type)) {
				const auto& tree = ut->advancement_tree();
				types.insert(tree.begin(), tree.end());
				types.insert(type);
			}
		}
		if(types.find(u.type_id()) == types.end()) {
			return false;
		}
	}

	// The variation_type could be a comma separated list of types
	if (!vcfg["variation"].empty())
	{
		std::vector<std::string> types = utils::split(vcfg["variation"]);
		if (std::find(types.begin(), types.end(), u.variation()) == types.end()) {
			return false;
		}
	}

	// The has_variation_type could be a comma separated list of types
	if (!vcfg["has_variation"].empty())
	{
		bool match = false;
		// If this unit is a variation itself then search in the base unit's variations.
		const unit_type* const type = u.variation().empty() ? &u.type() : unit_types.find(u.type().base_id());
		assert(type);
//.........这里部分代码省略.........

void part::resolve_wml(const vconfig &cfg)
{
	if(cfg.null()) {
		return;
	}

	if(cfg.has_attribute("background")) {
		background_file_ = cfg["background"].str();
	}
	if(cfg.has_attribute("scale_background")) {
		scale_background_ = cfg["scale_background"].to_bool(true);
	}
	if(cfg.has_attribute("show_title")) {
		show_title_ = cfg["show_title"].to_bool();
	}
	if(cfg.has_attribute("story")) {
		text_ = cfg["story"].str();
	}
	if(cfg.has_attribute("title")) {
		text_title_ = cfg["title"].str();
		if(!cfg.has_attribute("show_title")) {
			show_title_ = true;
		}
	}
	if(cfg.has_attribute("text_layout")) {
		text_block_loc_ = string_tblock_loc(cfg["text_layout"]);
	}
	if(cfg.has_attribute("title_alignment")) {
		title_alignment_ = string_title_align(cfg["title_alignment"]);
	}
	if(cfg.has_attribute("music")) {
		music_ = cfg["music"].str();
	}
	if(cfg.has_attribute("sound")) {
		sound_ = cfg["sound"].str();
	}

	// Execution flow/branching/[image]
	for(vconfig::all_children_iterator i = cfg.ordered_begin(); i != cfg.ordered_end(); ++ i) {
		// i->first and i->second are goddamn temporaries; do not make references
		const std::string key = i->first;
		const vconfig node = i->second;

		// [image]
		if(key == "image") {
			floating_images_.push_back(node.get_parsed_config());
		}
		// [if]
		else if(key == "if") {
			const std::string branch_label =
				game_events::conditional_passed(node) ?
				"then" : "else";
			if(node.has_child(branch_label)) {
				const vconfig branch = node.child(branch_label);
				resolve_wml(branch);
			}
		}
		// [switch]
		else if(key == "switch") {
			const std::string var_name = node["variable"];
			const std::string var_actual_value = resources::state_of_game->get_variable_const(var_name);
			bool case_not_found = true;

			for(vconfig::all_children_iterator j = node.ordered_begin(); j != node.ordered_end(); ++j) {
				if(j->first != "case") continue;

				// Enter all matching cases.
				const std::string var_expected_value = (j->second)["value"];
			    if(var_actual_value == var_expected_value) {
					case_not_found = false;
					resolve_wml(j->second);
			    }
			}

			if(case_not_found) {
				for(vconfig::all_children_iterator j = node.ordered_begin(); j != node.ordered_end(); ++j) {
					if(j->first != "else") continue;

					// Enter all elses.
					resolve_wml(j->second);
				}
			}
		}
		// [deprecated_message]
		else if(key == "deprecated_message") {
			// Won't appear until the scenario start event finishes.
			game_events::handle_deprecated_message(node.get_parsed_config());
		}
		// [wml_message]
		else if(key == "wml_message") {
			// Pass to game events handler. As with [deprecated_message],
			// it won't appear until the scenario start event is complete.
			game_events::handle_wml_log_message(node.get_parsed_config());
		}
	}
}

void controller::resolve_wml(const vconfig& cfg)
{
	for(vconfig::all_children_iterator i = cfg.ordered_begin(); i != cfg.ordered_end(); ++i)
	{
		// i->first and i->second are goddamn temporaries; do not make references
		const std::string key = i->first;
		const vconfig node = i->second;

		if(key == "part" && !node.empty()) {
			part_pointer_type const story_part(new part(node));
			// Use scenario name as part title if the WML doesn't supply a custom one.
			if((*story_part).show_title() && (*story_part).title().empty()) {
				(*story_part).set_title( scenario_name_ );
			}
			parts_.push_back(story_part);
		}
		// [if]
		else if(key == "if") {
			// check if the [if] tag has a [then] child;
			// if we try to execute a non-existing [then], we get a segfault
			if (game_events::conditional_passed(node)) {
				if (node.has_child("then")) {
					resolve_wml(node.child("then"));
				}
			}
			// condition not passed, check [elseif] and [else]
			else {
				// get all [elseif] children and set a flag
				vconfig::child_list elseif_children = node.get_children("elseif");
				bool elseif_flag = false;
				// for each [elseif]: test if it has a [then] child
				// if the condition matches, execute [then] and raise flag
				for (vconfig::child_list::const_iterator elseif = elseif_children.begin(); elseif != elseif_children.end(); ++elseif) {
					if (game_events::conditional_passed(*elseif)) {
						if (elseif->has_child("then")) {
							resolve_wml(elseif->child("then"));
						}
						elseif_flag = true;
						break;
					}
				}
				// if we have an [else] tag and no [elseif] was successful (flag not raised), execute it
				if (node.has_child("else") && !elseif_flag) {
					resolve_wml(node.child("else"));
				}
			}
		}
		// [switch]
		else if(key == "switch") {
			const std::string var_name = node["variable"];
			const std::string var_actual_value = resources::gamedata->get_variable_const(var_name);
			bool case_not_found = true;

			for(vconfig::all_children_iterator j = node.ordered_begin(); j != node.ordered_end(); ++j) {
				if(j->first != "case") continue;

				// Enter all matching cases.
				const std::string var_expected_value = (j->second)["value"];
			    if(var_actual_value == var_expected_value) {
					case_not_found = false;
					resolve_wml(j->second);
			    }
			}

			if(case_not_found) {
				for(vconfig::all_children_iterator j = node.ordered_begin(); j != node.ordered_end(); ++j) {
					if(j->first != "else") continue;

					// Enter all elses.
					resolve_wml(j->second);
				}
			}
		}
		// [deprecated_message]
		else if(key == "deprecated_message") {
			// Won't appear until the scenario start event finishes.
			game_events::handle_deprecated_message(node.get_parsed_config());
		}
		// [wml_message]
		else if(key == "wml_message") {
			// Pass to game events handler. As with [deprecated_message],
			// it won't appear until the scenario start event is complete.
			game_events::handle_wml_log_message(node.get_parsed_config());
		}
	}
}