manabrew_engine/replacement/
replace_mill.rs

1//! Replacement logic for `Event$ Mill`.
2//!
3//! Mirrors Java `ReplaceMill.java` in `forge/game/replacement/`.
4
5use crate::card::Card;
6use crate::game::GameState;
7use crate::ids::CardId;
8
9use super::replacement_effect::ReplacementEffect;
10use super::replacement_handler::{execute_replace_with_numeric_update, ReplacementEvent};
11use super::replacement_result::ReplacementResult;
12use super::replacement_type::ReplacementType;
13use crate::card_trait_base::CardTrait;
14
15/// Mirrors Java `ReplaceMill.canReplace()`.
16pub fn can_replace(
17    effect: &ReplacementEffect,
18    event: &ReplacementEvent,
19    _game: &GameState,
20    source_card: &Card,
21) -> bool {
22    if effect.event != ReplacementType::Mill {
23        return false;
24    }
25    let player = match event {
26        ReplacementEvent::Mill { player, .. } => *player,
27        _ => return false,
28    };
29    if let Some(valid) = effect.ir.valid_player_selector.as_ref() {
30        if !effect.matches_compiled_valid_player(valid, player, source_card) {
31            return false;
32        }
33    }
34    true
35}
36
37/// Mirrors Java `ReplacementHandler.executeReplacement()` for Mill.
38pub fn execute(
39    effect: &ReplacementEffect,
40    event: &mut ReplacementEvent,
41    _game: &GameState,
42    _source_card_id: CardId,
43) -> ReplacementResult {
44    match event {
45        ReplacementEvent::Mill { .. } => {}
46        _ => return ReplacementResult::NotReplaced,
47    }
48    if effect.prevents() {
49        if let ReplacementEvent::Mill { count, .. } = event {
50            *count = 0;
51        }
52        return ReplacementResult::Prevented;
53    }
54    if let Some(result) =
55        execute_replace_with_numeric_update(effect, event, _game, _source_card_id, "Number")
56    {
57        return result;
58    }
59    ReplacementResult::Replaced
60}
manabrew_engine/replacement/replace_mill.rs

manabrew_engine/replacement/
replace_mill.rs
