manabrew_engine/ability/effects/

animate_effect.rs

use forge_foundation::{ColorSet, ZoneType};

use super::trait_animate_effect::parse_animate_params;
use super::EffectContext;
use crate::ability::ability_ir::DefinedRef;
use crate::card::card_trait_changes::CardTraitChanges;
use crate::card::perpetual::perpetual_interface::PerpetualInterface;
use crate::card::perpetual::{
    perpetual_abilities, perpetual_colors, perpetual_incorporate, perpetual_keywords,
    perpetual_mana_cost, perpetual_new_pt, perpetual_types,
};
use crate::card::AnimateState;
use crate::spellability::SpellAbility;
use crate::trigger::parse_trigger;
use forge_foundation::ManaCost;

/// `SP$ Animate` — turn a non-creature permanent into a creature (or modify creature stats).
///
/// Mirrors Java's `AnimateEffectBase.java` + `AnimateEffect.java`.
///
/// # Params
/// - `Defined$` — target card(s) (default: source card itself)
/// - `Power` — set base power
/// - `Toughness` — set base toughness
/// - `Types` — comma-separated types to add (e.g. "Creature,Land")
/// - `Keywords` — comma-separated keywords to grant (until EOT)
/// - `Colors` — comma-separated colors to set (e.g. "White,Blue")
/// - `OverwriteTypes` — if "True", replace type_line instead of adding
///
/// The animate_state is saved so step_cleanup can restore the original card state.
/// Struct form of this effect so it can participate in the
/// `SpellAbilityEffect` trait hierarchy — mirrors Java's
/// `AnimateEffect` class extending `SpellAbilityEffect`.
#[manabrew_engine_macros::spell_effect(AnimateEffect)]
fn resolve(ctx: &mut EffectContext, sa: &crate::spellability::SpellAbility) {
    let controller = sa.activating_player;

    // Determine target card
    let target_ids = resolve_animate_targets(ctx, sa, controller);

    // Use shared base-class parsing for common animate params
    let anim_params = parse_animate_params(sa);
    let power_str = anim_params.power.map(|p| p.to_string());
    let toughness_str = anim_params.toughness.map(|t| t.to_string());
    let types_str = if anim_params.add_types.is_empty() {
        None
    } else {
        Some(anim_params.add_types.join(","))
    };
    let keywords_str = if anim_params.add_keywords.is_empty() {
        None
    } else {
        Some(anim_params.add_keywords.join(","))
    };
    let remove_keywords_str = sa.ir.animate_remove_keywords_text.clone();
    let colors_str = anim_params.colors.map(|c| c.join(","));
    let triggers_str = sa.ir.animate_triggers_text.clone();
    let overwrite_types = anim_params.overwrite_types;
    let incorporate_cost = sa.ir.animate_incorporate_text.clone();
    let mana_cost_override = sa.ir.animate_mana_cost_override_text.clone();
    let is_perpetual = matches!(
        sa.ir.duration,
        Some(crate::spellability::AbilityDuration::Perpetual)
    );
    let is_permanent_duration = matches!(
        sa.ir.duration,
        Some(crate::spellability::AbilityDuration::Permanent)
    );
    let resolve_ts = ctx.game.next_effect_timestamp();

    // Resolve Triggers$ SVars from the source card into parsed Trigger objects.
    // These will be temporarily added to each target card.
    let mut parsed_triggers: Vec<crate::trigger::Trigger> = Vec::new();
    if let Some(ref trigs) = triggers_str {
        // The source card holds the SVars that define the triggers.
        let source_id = sa.source.unwrap_or(crate::ids::CardId(0));
        let source_svars = ctx.game.card(source_id).svars.clone();
        let mut next_trig_id = 1000u32; // high base to avoid collisions
        for trig_name in trigs.split(',') {
            let trig_name = trig_name.trim();
            if trig_name.is_empty() {
                continue;
            }
            if let Some(svar_text) = source_svars.get(trig_name) {
                if let Some(mut trig) = parse_trigger(svar_text, &mut next_trig_id) {
                    trig.execute = trig.execute.clone();
                    parsed_triggers.push(trig);
                }
            }
        }
    }

    // Snapshot target IDs for AtEOT$ delayed trigger registration after the loop.
    let eot_targets = target_ids.clone();

    for card_id in target_ids {
        // Only animate cards on the battlefield
        if ctx.game.card(card_id).zone != ZoneType::Battlefield {
            continue;
        }

        let effect_ts = if is_perpetual { Some(resolve_ts) } else { None };

        if let Some(ref mc) = incorporate_cost {
            let ts = resolve_ts;
            perpetual_incorporate::PerpetualIncorporate {
                timestamp: ts,
                incorporate: ManaCost::parse(mc),
            }
            .apply_effect(ctx.game.card_mut(card_id));
        }
        if let Some(ref mc) = mana_cost_override {
            if let Some(ts) = effect_ts {
                perpetual_mana_cost::PerpetualManaCost {
                    timestamp: ts,
                    mana_cost: ManaCost::parse(mc),
                }
                .apply_effect(ctx.game.card_mut(card_id));
            }
        }

        // Save original state (only if not already animated this turn)
        if ctx.game.card(card_id).animate_state.is_none() {
            let original_type_line = ctx.game.card(card_id).type_line.clone();
            let original_base_power = ctx.game.card(card_id).base_power;
            let original_base_toughness = ctx.game.card(card_id).base_toughness;
            let original_color = ctx.game.card(card_id).color;
            let original_keywords = ctx.game.card(card_id).keywords.clone();
            ctx.game
                .card_mut(card_id)
                .set_animate_state(Some(AnimateState {
                    original_type_line,
                    original_base_power,
                    original_base_toughness,
                    original_color,
                    original_keywords: Some(original_keywords),
                }));
        }

        // Apply type changes
        if let Some(ref types) = types_str {
            if overwrite_types {
                ctx.game
                    .card_mut(card_id)
                    .set_type_line(forge_foundation::CardTypeLine::new());
            }
            for t in types.split(',') {
                let t = t.trim();
                if !t.is_empty() {
                    if let Some(ts) = effect_ts {
                        perpetual_types::PerpetualTypes {
                            timestamp: ts,
                            add_types: vec![t.to_string()],
                        }
                        .apply_effect(ctx.game.card_mut(card_id));
                    } else {
                        ctx.game.card_mut(card_id).add_type(t);
                    }
                }
            }
        }

        if sa
            .ir
            .spell_description_text
            .as_deref()
            .is_some_and(|desc| desc.to_ascii_lowercase().starts_with("crew"))
        {
            ctx.game.card_mut(card_id).becomes_crewed();
        }

        // Apply P/T
        let parsed_power = power_str
            .as_deref()
            .and_then(|p| p.trim().parse::<i32>().ok());
        let parsed_toughness = toughness_str
            .as_deref()
            .and_then(|t| t.trim().parse::<i32>().ok());
        if let Some(ts) = effect_ts {
            if parsed_power.is_some() || parsed_toughness.is_some() {
                perpetual_new_pt::PerpetualNewPt {
                    timestamp: ts,
                    power: parsed_power,
                    toughness: parsed_toughness,
                }
                .apply_effect(ctx.game.card_mut(card_id));
            }
        } else {
            if let Some(val) = parsed_power {
                ctx.game.card_mut(card_id).set_base_power(Some(val));
            }
            if let Some(val) = parsed_toughness {
                ctx.game.card_mut(card_id).set_base_toughness(Some(val));
            }
        }

        // Apply keyword changes. Permanent-duration animate effects need to mutate
        // the card's live keyword set (e.g. Animate Dead changing its Enchant text),
        // not just temporary pump keywords.
        let add_keywords: Vec<String> = keywords_str
            .as_deref()
            .map(|kws| {
                kws.split(',')
                    .map(str::trim)
                    .filter(|kw| !kw.is_empty())
                    .map(str::to_string)
                    .collect()
            })
            .unwrap_or_default();
        let remove_keywords: Vec<String> = remove_keywords_str
            .as_deref()
            .map(|kws| {
                kws.split(',')
                    .map(str::trim)
                    .filter(|kw| !kw.is_empty())
                    .map(str::to_string)
                    .collect()
            })
            .unwrap_or_default();
        if !add_keywords.is_empty() || !remove_keywords.is_empty() {
            if let Some(ts) = effect_ts {
                perpetual_keywords::PerpetualKeywords {
                    timestamp: ts,
                    add_keywords,
                    remove_keywords,
                    remove_all: false,
                }
                .apply_effect(ctx.game.card_mut(card_id));
            } else if is_permanent_duration {
                let card = ctx.game.card_mut(card_id);
                for kw in &remove_keywords {
                    card.remove_changed_card_keywords(kw);
                    card.remove_hidden_extrinsic_keywords(kw);
                    card.pump_keywords.remove(kw);
                }
                for kw in &add_keywords {
                    card.add_changed_card_keywords(kw);
                }
            } else {
                let card = ctx.game.card_mut(card_id);
                for kw in &remove_keywords {
                    card.pump_keywords.remove(kw);
                }
                for kw in &add_keywords {
                    card.add_pump_keyword(kw);
                }
            }
        }

        // Apply triggers (e.g. Supernatural Stamina's death → return trigger)
        // Triggers are added from the SOURCE card's SVars, not the target's.
        // Also copy the SVars needed by the trigger's Execute$ reference.
        if !parsed_triggers.is_empty() {
            let source_id = sa.source.unwrap_or(crate::ids::CardId(0));
            let source_svars = ctx.game.card(source_id).svars.clone();
            if let Some(ts) = effect_ts {
                let changes = CardTraitChanges {
                    triggers: parsed_triggers.clone(),
                    ..Default::default()
                };
                perpetual_abilities::PerpetualAbilities {
                    timestamp: ts,
                    changes,
                }
                .apply_effect(ctx.game.card_mut(card_id));
                for trig in &parsed_triggers {
                    if !trig.execute.is_empty() {
                        if let Some(exec_svar) = source_svars.get(&trig.execute) {
                            ctx.game
                                .card_mut(card_id)
                                .set_s_var_if_absent(trig.execute.clone(), exec_svar.clone());
                        }
                    }
                }
            } else {
                for trig in &parsed_triggers {
                    ctx.game.card_mut(card_id).add_trigger(trig.clone());
                    ctx.game.card_mut(card_id).increment_pump_trigger_count();
                    // Copy the Execute SVar from source to target so trigger resolution
                    // can find it (e.g. SupernaturalStaminaTrigChangeZone)
                    if !trig.execute.is_empty() {
                        if let Some(exec_svar) = source_svars.get(&trig.execute) {
                            ctx.game
                                .card_mut(card_id)
                                .set_s_var_if_absent(trig.execute.clone(), exec_svar.clone());
                        }
                    }
                }
            }
            // Re-register this card's triggers so the new ones are active
            ctx.trigger_handler
                .register_active_trigger(ctx.game, card_id);
        }

        // Apply color
        if let Some(ref colors) = colors_str {
            let mut new_color = ColorSet::COLORLESS;
            for c in colors.split(',') {
                let c = c.trim().to_lowercase();
                match c.as_str() {
                    "white" | "w" => new_color = new_color.union(ColorSet::WHITE),
                    "blue" | "u" => new_color = new_color.union(ColorSet::BLUE),
                    "black" | "b" => new_color = new_color.union(ColorSet::BLACK),
                    "red" | "r" => new_color = new_color.union(ColorSet::RED),
                    "green" | "g" => new_color = new_color.union(ColorSet::GREEN),
                    _ => {}
                }
            }
            if let Some(ts) = effect_ts {
                perpetual_colors::PerpetualColors {
                    timestamp: ts,
                    colors: new_color,
                    overwrite: true,
                }
                .apply_effect(ctx.game.card_mut(card_id));
            } else {
                ctx.game.card_mut(card_id).set_color(new_color);
            }
        }
    }

    // `AtEOT$ <action>` — register an end-of-turn delayed trigger on the
    // animated cards still on the battlefield.
    if let Some(action) = sa.ir.at_eot.as_deref() {
        let remembered: Vec<crate::ids::CardId> = eot_targets
            .iter()
            .copied()
            .filter(|&cid| ctx.game.card(cid).zone == ZoneType::Battlefield)
            .collect();
        crate::ability::spell_ability_effect::register_at_eot(
            ctx.trigger_handler,
            ctx.game,
            sa,
            action,
            remembered,
        );
    }
}

/// Resolve which card(s) to animate.
fn resolve_animate_targets(
    ctx: &mut EffectContext,
    sa: &SpellAbility,
    _controller: crate::ids::PlayerId,
) -> Vec<crate::ids::CardId> {
    // Check for explicit target
    if let Some(target) = sa.target_chosen.target_card {
        return vec![target];
    }

    // Check Defined$ param
    if let Some(defined) = sa.defined_ref() {
        match defined {
            DefinedRef::SelfCard => {
                if let Some(src) = sa.source {
                    return vec![src];
                }
            }
            DefinedRef::ParentTarget => {
                if let Some(pt) = ctx.parent_target_card {
                    return vec![pt];
                }
            }
            DefinedRef::Remembered => {
                if let Some(src) = sa.source {
                    return ctx.game.card(src).remembered_cards.clone();
                }
            }
            _ => {}
        }
    }

    // Default: animate source card itself
    if let Some(src) = sa.source {
        vec![src]
    } else {
        vec![]
    }
}