1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
use super::EffectContext;
use crate::ids::CardId;
use crate::parsing::keys;
use crate::replacement::replacement_handler::{apply_replacements, ReplacementEvent};
use crate::replacement::ReplacementResult;
use crate::spellability::SpellAbilityMode;
/// Mirrors Java's `SetStateEffect.java`.
///
/// `DB$ SetState | Defined$ Self | Mode$ Transform`
///
/// Optionally gated by:
/// `ConditionDefined$ Remembered | ConditionPresent$ Card.Instant,Card.Sorcery | ConditionCompare$ EQ1`
///
/// If the condition passes, transforms the source DFC card to its other face.
/// Struct form of this effect so it can participate in the
/// `SpellAbilityEffect` trait hierarchy — mirrors Java's
/// `SetStateEffect` class extending `SpellAbilityEffect`.
#[manabrew_engine_macros::spell_effect(SetStateEffect)]
fn resolve(ctx: &mut EffectContext, sa: &crate::spellability::SpellAbility) {
let mode = sa.ir.mode.as_ref();
let source_id = match sa.source {
Some(id) => id,
None => return,
};
match mode {
Some(SpellAbilityMode::Transform) => {
// Evaluate optional condition.
if let Some(cond_defined) = sa.ir.condition_defined.as_ref() {
if cond_defined.refs.first().is_some_and(|defined| {
matches!(defined, crate::ability::ability_ir::DefinedRef::Remembered)
}) {
let cond_present = sa.ir.condition_present.clone().unwrap_or_default();
let cond_compare = sa.ir.condition_compare.clone().unwrap_or_default();
let remembered: Vec<CardId> = ctx.game.card(source_id).remembered_cards.clone();
let match_count = remembered
.iter()
.filter(|&&cid| matches_type_filter(ctx, cid, &cond_present))
.count();
if !evaluate_compare(&cond_compare, match_count) {
return; // Condition not met.
}
}
}
// Run Transform replacement effects before transforming.
let mut transform_event = ReplacementEvent::Transform { card: source_id };
let transform_result = apply_replacements(ctx.game, &mut transform_event);
if transform_result == ReplacementResult::Skipped
|| transform_result == ReplacementResult::Replaced
{
return;
}
// Perform the transform.
ctx.game.card_mut(source_id).transform();
// Fire Transformed trigger
ctx.trigger_handler.run_trigger(
crate::trigger::TriggerType::Transformed,
crate::event::RunParams {
card: Some(source_id),
..Default::default()
},
false,
);
// Re-scan active triggers so the new face's trigger list takes effect.
ctx.trigger_handler.reset_active_triggers(ctx.game);
}
Some(SpellAbilityMode::Flip) => {
// Toggle the flipped state.
let card = ctx.game.card_mut(source_id);
card.set_flipped(!card.flipped);
}
Some(SpellAbilityMode::TurnFaceUp) => {
// Run TurnFaceUp replacement effects before turning face up.
let mut faceup_event = ReplacementEvent::TurnFaceUp { card: source_id };
let faceup_result = apply_replacements(ctx.game, &mut faceup_event);
if faceup_result == ReplacementResult::Skipped
|| faceup_result == ReplacementResult::Replaced
{
return;
}
let card = ctx.game.card_mut(source_id);
if card.face_down {
card.set_face_down(false);
// Restore original P/T by clearing the face-down overrides
card.set_static_set_pt(None, None);
// Remove the synthetic morph turn-face-up ability
card.activated_abilities
.retain(|ab| !ab.ability_text.contains("Mode$ TurnFaceUp"));
// Megamorph: add a +1/+1 counter when turning face-up
if sa.param_is_true(keys::MEGA) {
ctx.add_counter(
source_id,
&crate::card::CounterType::P1P1,
1,
sa,
crate::event::RunParams::default(),
);
}
// Fire TurnFaceUp trigger
ctx.trigger_handler.run_trigger(
crate::trigger::TriggerType::TurnFaceUp,
crate::event::RunParams {
card: Some(source_id),
..Default::default()
},
false,
);
// Re-scan active triggers for the revealed card
ctx.trigger_handler.reset_active_triggers(ctx.game);
}
}
Some(SpellAbilityMode::TurnFaceDown) => {
let card = ctx.game.card_mut(source_id);
if !card.face_down {
card.set_face_down(true);
}
}
_ => {
let err = crate::ability::IllegalAbilityException::new(format!(
"Unknown SetState mode: {:?}",
mode.map(ToString::to_string)
));
eprintln!("{}", err);
}
}
}
/// Check if a card matches a comma-separated type filter (OR semantics).
/// E.g. `"Card.Instant,Card.Sorcery"` → true if the card is an Instant or Sorcery.
fn matches_type_filter(ctx: &EffectContext, card_id: CardId, filter: &str) -> bool {
if filter.is_empty() {
return true;
}
for part in filter.split(',') {
let type_name = part.trim().strip_prefix("Card.").unwrap_or(part.trim());
let card = ctx.game.card(card_id);
if card
.type_line
.core_types
.iter()
.any(|t| t.name().eq_ignore_ascii_case(type_name))
{
return true;
}
}
false
}
/// Evaluate a `ConditionCompare` expression (e.g. `"EQ1"`, `"GT0"`) against a count.
fn evaluate_compare(compare: &str, count: usize) -> bool {
if compare.len() < 3 {
return true;
}
let op = &compare[..2];
let num: usize = compare[2..].parse().unwrap_or(0);
match op {
"EQ" => count == num,
"GT" => count > num,
"GE" => count >= num,
"LT" => count < num,
"LE" => count <= num,
"NE" => count != num,
_ => true,
}
}