manabrew_engine/trigger/
trigger_drawn.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 TriggerDrawn {
13    pub valid_card: Option<crate::parsing::CompiledSelector>,
14    pub valid_player: Option<crate::parsing::CompiledSelector>,
15    pub number: Option<i32>,
16}
17
18impl TriggerDrawn {
19    pub fn parse(params: &Params) -> Box<dyn TriggerBehavior> {
20        Box::new(Self {
21            valid_card: params.selector_cloned(keys::VALID_CARD),
22            valid_player: params.selector_cloned(keys::VALID_PLAYER),
23            number: params.as_i32(keys::NUMBER),
24        })
25    }
26}
27
28#[typetag::serde]
29impl TriggerBehavior for TriggerDrawn {
30    fn trigger_type(&self) -> TriggerType {
31        TriggerType::Drawn
32    }
33
34    fn perform_test(
35        &self,
36        trigger: &super::trigger::Trigger,
37        params: &RunParams,
38        game: &GameState,
39    ) -> bool {
40        let _host_card = trigger.base.card_trait_base.host_card_id();
41        let host_controller = trigger.base.card_trait_base.host_controller(game);
42        if let Some(n) = self.number {
43            let drawn_count = params.drawn_this_turn_snapshot.unwrap_or_else(|| {
44                let player = params.player.unwrap_or(host_controller);
45                game.player(player).drawn_this_turn
46            });
47            if drawn_count != n {
48                return false;
49            }
50        }
51        trigger.matches_optional_valid_card_filter(&self.valid_card, params.card, game)
52            && trigger.matches_optional_valid_player_filter(&self.valid_player, params.player, game)
53    }
54
55    fn set_triggering_objects(
56        &self,
57        _trigger: &super::trigger::Trigger,
58        sa: &mut SpellAbility,
59        params: &RunParams,
60        _game: &GameState,
61    ) {
62        if let Some(card) = params.card {
63            sa.set_triggering_object(crate::ability::AbilityKey::Card, card.0.to_string());
64        }
65        if let Some(p) = params.player {
66            sa.set_triggering_object(crate::ability::AbilityKey::Player, p.0.to_string());
67        }
68    }
69
70    fn drawn_number(&self) -> Option<i32> {
71        self.number
72    }
73
74    fn get_important_stack_objects(
75        &self,
76        _trigger: &super::trigger::Trigger,
77        sa: &SpellAbility,
78    ) -> String {
79        format!(
80            "Player: {}",
81            sa.get_triggering_object(crate::ability::AbilityKey::Player)
82                .unwrap_or_default()
83        )
84    }
85}
manabrew_engine/trigger/trigger_drawn.rs

manabrew_engine/trigger/
trigger_drawn.rs
