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manabrew_engine/staticability/
static_ability_must_attack.rs

1use forge_foundation::ZoneType;
2
3use crate::card::{valid_filter, Card};
4use crate::parsing::CompiledSelector;
5use crate::staticability::StaticMode;
6
7pub fn must_attack(cards: &[Card], attacker: &Card) -> bool {
8    for source in cards.iter().filter(|c| c.zone == ZoneType::Battlefield) {
9        for st_ab in source
10            .static_abilities
11            .iter()
12            .filter(|sa| sa.check_mode(&StaticMode::MustAttack))
13        {
14            if matches_valid_creature(st_ab.ir.valid_creature.as_ref(), attacker, source) {
15                return true;
16            }
17        }
18    }
19    false
20}
21
22pub fn entities_must_attack(cards: &[Card], attacker: &Card) -> bool {
23    must_attack(cards, attacker)
24}
25
26fn matches_valid_creature(valid: Option<&CompiledSelector>, card: &Card, source: &Card) -> bool {
27    match valid {
28        None => card.is_creature(),
29        Some(selector) => valid_filter::matches_valid_card_selector(selector, card, source),
30    }
31}