Add static forced-attack requirement parsing ("attacks each combat if able unless") — Galactus

crates/engine/src/ai_support/candidates.rs

@@ -6160,7 +6160,7 @@ mod tests {
             .static_definitions
             .push(StaticDefinition::new(
                 crate::types::statics::StaticMode::MustAttackPlayer {
-                    player: PlayerId(1),
+                    player: PlayerId(1).into(),
                 },
             ));
         let goaded = make_creature(&mut state, 2);

crates/engine/src/database/encore_tests.rs

@@ -25,7 +25,7 @@ use crate::types::keywords::Keyword;
 use crate::types::mana::{ManaColor, ManaCost, ManaCostShard};
 use crate::types::phase::Phase;
 use crate::types::player::PlayerId;
-use crate::types::statics::StaticMode;
+use crate::types::statics::{RequiredDefender, StaticMode};
 use crate::types::zones::Zone;
 
 // ---------------------------------------------------------------------------
@@ -207,7 +207,9 @@ fn encore_activation_creates_attacking_haste_copy_per_opponent() {
         must_attack.modifications.iter().any(|m| matches!(
             m,
             ContinuousModification::AddStaticMode {
-                mode: StaticMode::MustAttackPlayer { player },
+                mode: StaticMode::MustAttackPlayer {
+                    player: RequiredDefender::Fixed { player },
+                },
             } if *player == PlayerId(1)
         )),
         "token must be required to attack the opponent"
@@ -305,7 +307,10 @@ fn encore_three_player_one_token_per_opponent_then_sacrificed_at_end_step() {
             .find_map(|ce| {
                 ce.modifications.iter().find_map(|m| match m {
                     ContinuousModification::AddStaticMode {
-                        mode: StaticMode::MustAttackPlayer { player },
+                        mode:
+                            StaticMode::MustAttackPlayer {
+                                player: RequiredDefender::Fixed { player },
+                            },
                     } => Some(*player),
                     _ => None,
                 })

crates/engine/src/game/effects/encore.rs

@@ -45,7 +45,7 @@ use crate::types::events::GameEvent;
 use crate::types::game_state::{DelayedTrigger, GameState};
 use crate::types::keywords::Keyword;
 use crate::types::phase::Phase;
-use crate::types::statics::StaticMode;
+use crate::types::statics::{RequiredDefender, StaticMode};
 
 /// CR 702.141a: Resolve a card's Encore ability — for each opponent of the
 /// activating player, create a haste-bearing token copy of the exiled source
@@ -94,7 +94,10 @@ pub fn resolve(
                 Duration::UntilEndOfTurn,
                 TargetFilter::SpecificObject { id: token_id },
                 vec![ContinuousModification::AddStaticMode {
-                    mode: StaticMode::MustAttackPlayer { player: opponent },
+                    // CR 611.2: snapshot the specific opponent at resolution.
+                    mode: StaticMode::MustAttackPlayer {
+                        player: RequiredDefender::Fixed { player: opponent },
+                    },
                 }],
                 None,
             );

crates/engine/src/game/effects/force_attack.rs

@@ -5,7 +5,7 @@ use crate::types::ability::{
 };
 use crate::types::events::GameEvent;
 use crate::types::game_state::GameState;
-use crate::types::statics::StaticMode;
+use crate::types::statics::{RequiredDefender, StaticMode};
 
 /// CR 508.1d: Force attack — the target creature must attack the required player
 /// this turn/combat if able.
@@ -35,7 +35,10 @@ pub fn resolve(
             duration.clone(),
             TargetFilter::SpecificObject { id: obj_id },
             vec![ContinuousModification::AddStaticMode {
-                mode: StaticMode::MustAttackPlayer { player },
+                // CR 611.2: the required defender is snapshotted at resolution.
+                mode: StaticMode::MustAttackPlayer {
+                    player: RequiredDefender::Fixed { player },
+                },
             }],
             None,
         );
@@ -110,7 +113,9 @@ mod tests {
             matches!(
                 m,
                 ContinuousModification::AddStaticMode {
-                    mode: StaticMode::MustAttackPlayer { player },
+                    mode: StaticMode::MustAttackPlayer {
+                        player: RequiredDefender::Fixed { player },
+                    },
                 } if *player == PlayerId(0)
             )
         }));
@@ -161,7 +166,9 @@ mod tests {
             matches!(
                 m,
                 ContinuousModification::AddStaticMode {
-                    mode: StaticMode::MustAttackPlayer { player },
+                    mode: StaticMode::MustAttackPlayer {
+                        player: RequiredDefender::Fixed { player },
+                    },
                 } if *player == PlayerId(1)
             )
         }));

crates/engine/src/parser/oracle_effect/mod.rs

@@ -7309,18 +7309,22 @@ fn parse_for_each_object_copy_parts(
 /// repeat an earlier choice (confirmed by the "Offering" cycle ruling —
 /// Benevolent/Infernal/Intellectual/Sylvan Offering — issue #6381). Either
 /// way, the engine index is derived from chain position, not the ordinal.
-/// CR 102.3 + CR 608.2d: Recognize the "with the most life [among
+/// CR 102.2 / CR 102.3 + CR 608.2d: Recognize the "with the most life [among
 /// your opponents]" qualifier on a "choose an opponent" instruction and lower it
 /// to the equivalent `PlayerFilter::PlayerAttribute` restriction: each candidate
 /// opponent whose life total is `>=` the maximum life total across all opponents.
-/// CR 102.3 scopes the candidate set to opponents; CR 608.2d lets the controller
-/// pick ONE qualifying opponent (resolving ties) when multiple share the maximum.
+/// CR 102.2 (two-player) / CR 102.3 (team multiplayer) scope the candidate set to
+/// opponents. For the resolution-time "choose an opponent …" consumers, CR 608.2d
+/// lets the controller pick ONE qualifying opponent (resolving ties) when multiple
+/// share the maximum. (The static forced-attack consumer reuses this SAME filter
+/// but is not a resolution-time choice — there a most-life tie is resolved under
+/// CR 508.1b/d at declare-attackers; see `parse_required_defender_selector`.)
 /// The candidate's life is read PER-CANDIDATE (`PlayerScope::ScopedPlayer`); the
 /// `value` threshold is the controller-relative max (`PlayerScope::Opponent {
 /// aggregate: Max }`), composed from existing typed enums rather than a bespoke
 /// `MostLife` sibling. Consumes the qualifier text; returns the parsed
 /// restriction so the caller can attach it to `ChoiceType::Opponent`.
-fn parse_opponent_most_life_restriction(input: &str) -> OracleResult<'_, PlayerFilter> {
+pub(crate) fn parse_opponent_most_life_restriction(input: &str) -> OracleResult<'_, PlayerFilter> {
     let (input, _) = preceded(
         tag(" with the most life"),
         opt(tag(" among your opponents")),

crates/engine/src/parser/oracle_static/dispatch.rs

@@ -1486,6 +1486,18 @@ pub(crate) fn parse_static_line_inner(
         return Some(def);
     }
 
+    // CR 508.1d + CR 604.1: "<subject> attacks <player-class> each combat if able
+    // [unless ...]" — a static attack requirement whose required defender is a
+    // live-evaluated player class (Galactus: "an opponent with the most life among
+    // your opponents ... unless you control a creature named ..."). Richer than the
+    // bare scoped must-attack below: the selector form is disjoint (returns None
+    // without a defender phrase), and the wrapper's flavor-label strip is a
+    // retry-on-failure (never fires when the body already parses), so ordering
+    // before `try_parse_scoped_must_attack_block` is safe.
+    if let Some(def) = parse_forced_attack_defender_static(&text) {
+        return Some(def);
+    }
+
     // CR 508.1d / CR 509.1c: Subject-scoped "attack/block each combat if able" patterns.
     // These apply MustAttack/MustBlock to a class of creatures (not just self).
     // Compound forms ("attacks or blocks") produce multiple statics; return the first here.

crates/engine/src/parser/oracle_static/evasion.rs

@@ -2464,6 +2464,101 @@ pub(crate) fn parse_subject_combat_rule_static(text: &str) -> Option<StaticDefin
     None
 }
 
+/// CR 102.2 / CR 102.3 + CR 508.1b / CR 508.1d: the required defending player
+/// class after "attacks ". Currently "a[n] opponent[ with the most life [among
+/// your opponents]]". CR 102.2 (two-player) / CR 102.3 (team multiplayer) scope
+/// the candidate set to opponents. This lowers to a static attack REQUIREMENT (CR
+/// 508.1d), re-evaluated each declare-attackers step; when the class holds more
+/// than one legal defender (e.g. a most-life tie) CR 508.1b — the active player
+/// announcing which player each attacker attacks — is where the player picks among
+/// the tied legal defenders. NOT CR 608.2d: that rule governs choices offered
+/// while resolving a spell or ability, not this continuous static requirement.
+/// Structured as sequential combinators so a future "a[n] player" (relation `All`)
+/// arm slots in without disturbing the opponent path. Reuses the shared
+/// `parse_opponent_most_life_restriction` selector rather than re-deriving the
+/// `PlayerAttribute` shape.
+fn parse_required_defender_selector(input: &str) -> OracleResult<'_, PlayerFilter> {
+    let (input, _) = alt((tag::<_, _, OracleError<'_>>("an "), tag("a "))).parse(input)?;
+    let (input, _) = tag("opponent").parse(input)?;
+    // Optional "with the most life [among your opponents]" qualifier; fall back to
+    // the bare `Opponent` class when the qualifier is absent ("an opponent").
+    match super::oracle_effect::parse_opponent_most_life_restriction(input) {
+        Ok((rest, filter)) => Ok((rest, filter)),
+        Err(_) => Ok((input, PlayerFilter::Opponent)),
+    }
+}
+
+/// CR 508.1d: `attacks <player-class> each combat if able` — the required-attack
+/// predicate. Consumes the verb, the defender selector, and the recurring-combat
+/// suffix, returning the selected `PlayerFilter` for the required defender.
+fn parse_attacks_required_defender_nom(input: &str) -> OracleResult<'_, PlayerFilter> {
+    let (input, _) = tag::<_, _, OracleError<'_>>("attacks ").parse(input)?;
+    let (input, filter) = parse_required_defender_selector(input)?;
+    let (input, _) = alt((
+        tag::<_, _, OracleError<'_>>(" each combat if able"),
+        tag(" each turn if able"),
+    ))
+    .parse(input)?;
+    Ok((input, filter))
+}
+
+/// CR 508.1d + CR 508.1b + CR 604.1 / CR 604.2 + CR 102.2 / CR 102.3: "<subject>
+/// attacks <player-class> each combat if able [unless <condition>]" — a static
+/// attack requirement (CR 508.1d) whose defending player is a live-evaluated class
+/// (Galactus: "an opponent with the most life among your opponents"; CR 102.2 /
+/// CR 102.3 scope "opponent", CR 508.1b covers the active player's choice among
+/// tied legal defenders). Emits
+/// `MustAttackPlayer { RequiredDefender::Matching { filter } }`, re-evaluated each
+/// declare-attackers step by the combat resolver.
+///
+/// The dispatcher receives the self-ref-normalized line WITHOUT the CR 207.2c /
+/// CR 207.2d ability-/flavor-word label stripped (Galactus's line arrives as
+/// "Insatiable Hunger — ~ attacks …"), so this wrapper tries the line as-is, then
+/// strips a leading flavor label via `strip_flavor_word_with_name` and retries
+/// ONCE on the body — mirroring the single-hop retry in
+/// `parse_static_line_multi_inner`. The strip is class-general (any leading
+/// flavor label preceding this static form) and safe: a false-positive strip
+/// yields a body that fails the strict subject / "attacks … each combat if able"
+/// match and returns `None`. The full Oracle line (label included) is preserved
+/// as the definition's description for display / round-trip.
+pub(crate) fn parse_forced_attack_defender_static(text: &str) -> Option<StaticDefinition> {
+    parse_forced_attack_defender_static_body(text).or_else(|| {
+        let (_label, body) = super::oracle_modal::strip_flavor_word_with_name(text)?;
+        parse_forced_attack_defender_static_body(&body).map(|def| def.description(text.to_string()))
+    })
+}
+
+fn parse_forced_attack_defender_static_body(text: &str) -> Option<StaticDefinition> {
+    let lower = text.to_lowercase();
+    let (subject_lower, filter, rest) =
+        nom_primitives::scan_preceded(&lower, parse_attacks_required_defender_nom)?;
+    let subject = text[..subject_lower.len()].trim();
+    let affected = parse_rule_static_subject_filter(subject)?;
+    let mut def = StaticDefinition::new(StaticMode::MustAttackPlayer {
+        player: RequiredDefender::Matching { filter },
+    })
+    .affected(affected)
+    .description(text.to_string());
+    // Consume an optional trailing period; any remaining tail MUST be a recognized
+    // `unless` gate (CR 604.1) — otherwise decline so an unrecognized rider cannot
+    // yield a half-parsed static (coverage stays honest / red).
+    let (rest, _) = opt(tag::<_, _, OracleError<'_>>(".")).parse(rest).ok()?;
+    let rest = rest.trim();
+    if rest.is_empty() {
+        return Some(def);
+    }
+    // The ONLY permitted tail is an `unless` clause, and it must begin RIGHT HERE.
+    // Requiring `rest` to start with `unless ` (rather than letting the whole-text
+    // `unless` scan below find it anywhere) is what stops an unmodelled rider
+    // between the recurring-combat suffix and `unless` from being silently
+    // swallowed — e.g. "... each combat if able <rider> unless <cond>" must decline,
+    // not parse as if the rider were absent.
+    tag::<_, _, OracleError<'_>>("unless ").parse(rest).ok()?;
+    let tp = TextPair::new(text, &lower);
+    def.condition = Some(super::shared::parse_unless_static_condition(&tp)?);
+    Some(def)
+}
+
 /// CR 702.122a / 702.171a / 702.184c: nom parser for the crew/saddle/station
 /// power-contribution modifier predicate. Composes the named action-list prefix
 /// (which records the affected keyword actions) with the modifier tail.

crates/engine/src/parser/oracle_static/mod.rs

@@ -66,8 +66,8 @@ mod prelude {
         CastCostMode, CastExtraCost, CastFreeOrigin, CastFrequency, CastingProhibitionCondition,
         CombatAloneAction, CombatAloneRequirement, CostModifyMode, CostPaymentProhibition,
         CrewAction, CrewContributionKind, ExileCardPool, ExileCastCost, ExileCastTiming,
-        HandSizeModification, ProhibitionScope, StaticMode, SuppressedTriggerEvent, TriggerCause,
-        ZoneChangeQualifier,
+        HandSizeModification, ProhibitionScope, RequiredDefender, StaticMode,
+        SuppressedTriggerEvent, TriggerCause, ZoneChangeQualifier,
     };
     pub(super) use crate::types::zones::Zone;
 }