manabrew_engine/trigger/
trigger_mana_expend.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::{Trigger, TriggerBehavior};
10
11#[derive(Debug, Clone, Serialize, Deserialize)]
12pub struct TriggerManaExpend {
13    pub valid_player: Option<crate::parsing::CompiledSelector>,
14    pub amount: i32,
15}
16
17impl TriggerManaExpend {
18    pub fn parse(params: &Params) -> Box<dyn TriggerBehavior> {
19        Box::new(Self {
20            valid_player: params.selector_cloned(keys::PLAYER),
21            amount: params.as_i32(keys::AMOUNT).unwrap_or(1),
22        })
23    }
24}
25
26#[typetag::serde]
27impl TriggerBehavior for TriggerManaExpend {
28    fn trigger_type(&self) -> TriggerType {
29        TriggerType::ManaExpend
30    }
31
32    fn perform_test(&self, trigger: &Trigger, params: &RunParams, game: &GameState) -> bool {
33        let _host_controller = trigger.base.card_trait_base.host_controller(game);
34        trigger.matches_optional_valid_player_filter(&self.valid_player, params.player, game)
35            && params.mana_expend_amount == Some(self.amount)
36    }
37
38    fn set_triggering_objects(
39        &self,
40        _trigger: &Trigger,
41        sa: &mut SpellAbility,
42        params: &RunParams,
43        _game: &GameState,
44    ) {
45        if let Some(amount) = params.mana_expend_amount {
46            sa.set_triggering_object(crate::ability::AbilityKey::Amount, amount.to_string());
47        }
48        if let Some(p) = params.player {
49            sa.set_triggering_object(crate::ability::AbilityKey::Player, p.0.to_string());
50        }
51    }
52
53    fn get_important_stack_objects(&self, _trigger: &Trigger, sa: &SpellAbility) -> String {
54        format!(
55            "{} expended {} mana",
56            sa.trigger_objects
57                .get(&crate::ability::AbilityKey::Player)
58                .map(|s| s.as_str())
59                .unwrap_or(""),
60            sa.trigger_objects
61                .get(&crate::ability::AbilityKey::Amount)
62                .map(|s| s.as_str())
63                .unwrap_or("")
64        )
65    }
66}
manabrew_engine/trigger/trigger_mana_expend.rs

manabrew_engine/trigger/
trigger_mana_expend.rs
