manabrew_engine/trigger/
trigger_damage_prevented_once.rs

1use serde::{Deserialize, Serialize};
2
3use crate::event::RunParams;
4use crate::game::GameState;
5use crate::parsing::{keys, Params};
6use crate::spellability::SpellAbility;
7use crate::trigger::TriggerType;
8
9use super::trigger::TriggerBehavior;
10
11#[derive(Debug, Clone, Serialize, Deserialize)]
12pub struct TriggerDamagePreventedOnce {
13    pub valid_card: Option<crate::parsing::CompiledSelector>,
14}
15
16impl TriggerDamagePreventedOnce {
17    pub fn parse(params: &Params) -> Box<dyn TriggerBehavior> {
18        Box::new(Self {
19            valid_card: params.selector_cloned(keys::VALID_CARD),
20        })
21    }
22}
23
24#[typetag::serde]
25impl TriggerBehavior for TriggerDamagePreventedOnce {
26    fn trigger_type(&self) -> TriggerType {
27        TriggerType::DamagePreventedOnce
28    }
29
30    fn perform_test(
31        &self,
32        trigger: &super::trigger::Trigger,
33        params: &RunParams,
34        game: &GameState,
35    ) -> bool {
36        let _host_card = trigger.base.card_trait_base.host_card_id();
37        let _host_controller = trigger.base.card_trait_base.host_controller(game);
38        trigger.matches_optional_valid_card_filter(&self.valid_card, params.card, game)
39    }
40
41    fn set_triggering_objects(
42        &self,
43        _trigger: &super::trigger::Trigger,
44        sa: &mut SpellAbility,
45        params: &RunParams,
46        _game: &GameState,
47    ) {
48        if let Some(card) = params.damage_target_card {
49            sa.set_triggering_object(crate::ability::AbilityKey::Target, card.0.to_string());
50        } else if let Some(player) = params.damage_target_player {
51            sa.set_triggering_object(crate::ability::AbilityKey::Target, player.0.to_string());
52        }
53        if let Some(amount) = params.damage_amount {
54            sa.set_triggering_object(crate::ability::AbilityKey::DamageAmount, amount.to_string());
55        }
56    }
57
58    fn get_important_stack_objects(
59        &self,
60        _trigger: &super::trigger::Trigger,
61        sa: &SpellAbility,
62    ) -> String {
63        // Java: "Damage Target: " + Target + ", Amount: " + DamageAmount
64        format!(
65            "Damage Target: {}, Amount: {}",
66            sa.get_triggering_object(crate::ability::AbilityKey::Target)
67                .unwrap_or(""),
68            sa.get_triggering_object(crate::ability::AbilityKey::DamageAmount)
69                .unwrap_or("")
70        )
71    }
72}
manabrew_engine/trigger/trigger_damage_prevented_once.rs

manabrew_engine/trigger/
trigger_damage_prevented_once.rs
