bool conditional_passed(const vconfig& cond)
{
bool matches = internal_conditional_passed(cond);
// Handle [and], [or], and [not] with in-order precedence
vconfig::all_children_iterator cond_i = cond.ordered_begin();
vconfig::all_children_iterator cond_end = cond.ordered_end();
while(cond_i != cond_end)
{
const std::string& cond_name = cond_i.get_key();
const vconfig& cond_filter = cond_i.get_child();
// Handle [and]
if(cond_name == "and")
{
matches = matches && conditional_passed(cond_filter);
}
// Handle [or]
else if(cond_name == "or")
{
matches = matches || conditional_passed(cond_filter);
}
// Handle [not]
else if(cond_name == "not")
{
matches = matches && !conditional_passed(cond_filter);
}
++cond_i;
}
return matches;
}
/**
* Returns whether or not *this is applicable given the context.
* Assumes game variables x1, y1, and unit have been set.
* @param[in] hex The hex where the menu will appear.
*/
bool wml_menu_item::can_show(const map_location & hex) const
{
// Failing the [show_if] tag means no show.
if ( !show_if_.empty() && !conditional_passed(show_if_) )
return false;
// Failing the [fiter_location] tag means no show.
if ( !filter_location_.empty() &&
!terrain_filter(filter_location_, *resources::units)(hex) )
return false;
// Failing to have a required selection means no show.
if ( needs_select_ && !resources::gamedata->last_selected.valid() )
return false;
// Passed all tests.
return true;
}
/**
* Returns true iff the given event passes all its filters.
*/
bool t_pump::filter_event(const event_handler& handler, const queued_event& ev)
{
const unit_map *units = resources::units;
unit_map::const_iterator unit1 = units->find(ev.loc1);
unit_map::const_iterator unit2 = units->find(ev.loc2);
vconfig filters(handler.get_config());
BOOST_FOREACH(const vconfig &condition, filters.get_children("filter_condition"))
{
if (!conditional_passed(condition)) {
return false;
}
}
BOOST_FOREACH(const vconfig &f, filters.get_children("filter_side"))
{
side_filter ssf(f, &resources::controller->gamestate());
if ( !ssf.match(resources::controller->current_side()) )
return false;
}
BOOST_FOREACH(const vconfig &f, filters.get_children("filter"))
{
if ( !ev.loc1.matches_unit_filter(unit1, f) ) {
return false;
}
}
vconfig::child_list special_filters = filters.get_children("filter_attack");
bool special_matches = special_filters.empty();
if ( !special_matches && unit1 != units->end() )
{
const bool matches_unit = ev.loc1.matches_unit(unit1);
const config & attack = ev.data.child("first");
BOOST_FOREACH(const vconfig &f, special_filters)
{
if ( f.empty() )
special_matches = true;
else if ( !matches_unit )
return false;
special_matches = special_matches ||
matches_special_filter(attack, f);
}
}
if(!special_matches) {
return false;
}
BOOST_FOREACH(const vconfig &f, filters.get_children("filter_second"))
{
if ( !ev.loc2.matches_unit_filter(unit2, f) ) {
return false;
}
}
special_filters = filters.get_children("filter_second_attack");
special_matches = special_filters.empty();
if ( !special_matches && unit2 != units->end() )
{
const bool matches_unit = ev.loc2.matches_unit(unit2);
const config & attack = ev.data.child("second");
BOOST_FOREACH(const vconfig &f, special_filters)
{
if ( f.empty() )
special_matches = true;
else if ( !matches_unit )
return false;
special_matches = special_matches ||
matches_special_filter(attack, f);
}
}
if(!special_matches) {
return false;
}
// All filters passed.
return true;
}
